Step-by-step explanation:
The minimum weight for shelter A is not provided in the given information, but we can compare the minimum weight of shelter B with shelter A's box plot.
As per the given information, the whisker of shelter A ranges from 8 to 30, which means the minimum weight in shelter A is 8 pounds. On the other hand, the whisker of shelter B ranges from 10 to 28, which means the minimum weight in shelter B is 10 pounds. Therefore, shelter A has the dog that weighs the least.
Answer:
Your answer is correct, it's shelter A.
Step-by-step explanation:
A ladder leans against the side of a house. The angle of elevation of the ladder is 69 when the bottom of the ladder is 8ft from the side of the house. How high is the top of the ladder from the ground? Round your answer to the nearest tenth.
Answer:
20.8
Step-by-step explanation:
Let h be the height of the ladder. We know that the distance BC is 8 ft, and the angle of elevation BAC is 69 degrees. Therefore, we have:
tan(69) = h/8
Multiplying both sides by 8, we get:
8*tan(69) = h
Using a calculator, we get:
h ≈ 20.8 ft
Therefore, the height of the top of the ladder from the ground is approximately 20.8 feet.
The ratio of James ' age to Andy's age is 2 : 7. In 8 years' time, the ratio will become
2 : 5, Find James' present age.
Answer: James' age now is 12 years old.
this is a proportions question
In the above proportions problem, note that the distance of PR is 155.17ft.
What is the explanation for the above response?To solve for PR, note that
OC/RE = PR/OR
That is:
225/145 = PR/100
To solve for PR, we can cross-multiply the fractions:
225 * 100 = 145 * PR
22,500 = 145PR
Dividing both sides by 145:
PR = 155.17
Therefore, PR is approximately 155.17ft
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PLs help Thank u!!!!!!!!!!!!!!!!!!!!!!!!
Using a trigonometric relation, we can see that the values of x and y are:
y = 25.98
x = 15
How to get the values of x and y?Here we can see a right triangle, where we know the interior angles and the length of the hypotenuse.
To get the lengths of the legs, we can use trigonometric relations, like:
cos(a) =(adjacent cathetus)/hypotenuse.
For example, if we want to find y, then the angle at which this side is adjacent is the 30° one, now replacing the known values in the formula we will get:
cos(30°) = y/30
cos(30°)*30 = y = 25.98
And to get the value of x, we should use the 60°angle, so:
cos(60°) = x/30
30*cos(60°) = x = 15
These are the two lengths we wanted to get.
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IT A MULTI-STEP PROBLEM HELP! 6 PARTS TO IT!!! IM GOING TO FAIL!! CAN PLEASE DO IT STEP BY STEP
a. The cost of one large pizza with one topping is $13.50. To purchase one large and five medium pizzas, we would need to buy one large pizza at regular price and five medium pizzas at the discounted price. The cost of the large pizza is $13.50, and the cost of each medium pizza is $6.25. Therefore, the total cost would be:
Total cost = Cost of large pizza + Cost of 5 medium pizzas
Total cost = $13.50 + ($6.25 x 5)
Total cost = $13.50 + $31.25
Total cost = $44.75
Therefore, it would cost $44.75 to purchase one large pizza and five medium pizzas.
b.Number of medium pizzas Total cost
0 | $13.50
1 | $19.75
2 | $26.00
3 | $32.25
4 | $38.50
c. Let "m" be the number of medium pizzas. Then the total cost of purchasing one large pizza with one topping and m medium pizzas can be represented as:
Total cost = 13.50 + 6.25m
d. If you have a total of $100 and purchase one large pizza, you would have $100 - $13.50 = $86.50 left to spend on medium pizzas. The cost of each medium pizza is $6.25. Therefore, you can buy:
Number of medium pizzas = $86.50 ÷ $6.25 = 13.84
Since you cannot buy a fraction of a pizza, you can only buy 13 medium pizzas with $86.50.
e. The area of a pizza is given by the formula A = πr^2, where A is the area and r is the radius. The area of a large pizza is:
A = πr^2
A = 3.14 x 8^2
A = 3.14 x 64
A = 200.96
The area of a medium pizza is:
A = πr^2
A = 3.14 x 5^2
A = 3.14 x 25
A = 78.5
Therefore, the total area of one large pizza and five medium pizzas is:
Total area = Area of large pizza + (Area of medium pizza x 5)
Total area = 200.96 + (78.5 x 5)
Total area = 200.96 + 392.5
Total area = 593.46
Rounding to the nearest inch, the total area of pizza is 593 square inches.
f. To calculate the cost per square inch of pizza, we need to divide the total cost of the pizzas by the total area of the pizzas. The total cost of one large pizza and five medium pizzas is $44.75, and the total area is 593 square inches. Therefore, the cost per square inch of pizza is:
Cost per square inch = Total cost / Total area
Cost per square inch = $44.75 / 593
Cost per square inch = $0.08 (rounded to the nearest cent)
Therefore, the cost per square inch of pizza is 8 cents.
The table shows the data of a random sample of fish that were collected from and later released into a lake.
Type of Fish Bass Eel Gar
Number of Fish 92 56 52
How many eels are estimated to be present if a sample of 1,000 fish is collected from the lake? (1 point)
a
112
b
280
c
320
d
380
Answer: d
Step-by-step explanation: its d
1. Is the check register balance correct? If not, what is the correct balance?
Statement ending balance: $41.27
Outstanding deposits: $27.70, $12.30, $102.43
Outstanding check: $10.98
Service charge: $5.82
Check register balance: $78.50
2. The Smith's opened a savings account with a deposit of $500. If the interest rate is 4% per year compounded quarterly (every three months), what is the balance after 3 months? After 6 months? After 9 months? After 1 year
3. David put $1000 in a savings account that paid 8% interest compounded annually. How much interest was earned in year 1? What was the total balance at the end of year 1? What was the interest earned in year 2? What was the total balance at the end of year 2? Year 3?
4. Calculate the interest earned by the amount of these savings accounts and the total balance at the end of each year. The interest is compounded annually.
$100 at 7% for 4 years
$500 at 8% for 3 years
$300 at 6% for 5 years
5. Calculate the interest earned by the amount of these savings accounts and the total balance at the end of each year. Which is the better investment? Why? By how much?
$850 at 7% compounded annually for 3 years.
$850 at 7% compounded semi-annually for 3 years.
$850 at 7% compounded quarterly for 3 years.
1) the correct check register balance is $166.90.
2)
a) After 3 months, balance = $510.08
b) after 6 months, balance, = $520.40
c) After 9 months , balance = $531.07
d) After 1 year, balance = $542.50
3)
the interest earned in year 1 is $80,
the total balance at the end of year 1 is $1080,
the interest earned in year 2 is $86.40,
the total balance at the end of year 2 is $1166.40, and t
he interest earned in year 3 is $93.31, and
the total balance at the end of year 3 is $1259.71.
4)
the interest earned by the $100 savings account is $28, and the total balance at the end of 4 years is $128.
The interest earned by the $500 savings account is $120, and the total balance at the end of 3 years is $620.
The interest earned by the $300 savings account is $90, and the total balance at the end of 5 years is $390.
A check register balance is the amount of money in a bank account, as recorded by the account holder in their check register, after accounting for deposits, withdrawals, and fees.
1)
The check register balance is not correct. To find the correct balance, we need to adjust the statement ending balance for the outstanding deposits, subtract the outstanding check and service charge, and add any other transactions that may have been missed.
Adjusted balance for outstanding deposits: $41.27 + $27.70 + $12.30 + $102.43 = $183.70
Adjusted balance for outstanding deposits minus the outstanding check: $183.70 - $10.98 = $172.72
Adjusted balance for outstanding deposits minus the outstanding check minus the service charge: $172.72 - $5.82 = $166.90
Therefore, the correct check register balance is $166.90.
2)
To find the balance of the savings account after various time periods, we can use the formula for compound interest:
A = P(1 + r/n)^(nt)
Where:
A = the balance after time t
P = the principal (initial deposit)
r = the annual interest rate (as a decimal)
n = the number of times the interest is compounded per year
t = the time period (in years)
For this problem, we have:
P = $500
r = 0.04
n = 4 (compounded quarterly)
t = 0.25 (3 months), 0.5 (6 months), 0.75 (9 months), 1 (1 year)
After 3 months:
A = $500(1 + 0.04/4)^(4*0.25) = $510.08
After 6 months:
A = $500(1 + 0.04/4)^(4*0.5) = $520.40
After 9 months:
A = $500(1 + 0.04/4)^(4*0.75) = $531.07
After 1 year:
A = $500(1 + 0.04/4)^(4*1) = $542.50
Therefore, the balance of the savings account after 3 months is $510.08, after 6 months is $520.40, after 9 months is $531.07, and after 1 year is $542.50.
3)
To find the interest earned and total balance at the end of each year, we can use the formula for compound interest:
A = P(1 + r/n)^(nt)
Where:
A = the balance after time t
P = the principal (initial deposit)
r = the annual interest rate (as a decimal)
n = the number of times the interest is compounded per year
t = the time period (in years)
For this problem, we have:
P = $1000
r = 0.08
n = 1 (compounded annually)
t = 1 (year)
After year 1:
Interest earned = $1000 x 0.08 = $80
Total balance = $1000 + $80 = $1080
After year 2:
Interest earned = $1080 x 0.08 = $86.40
Total balance = $1080 + $86.40 = $1166.40
After year 3:
Interest earned = $1166.40 x 0.08 = $93.31
Total balance = $1166.40 + $93.31 = $1259.71
Therefore, the interest earned in year 1 is $80, the total balance at the end of year 1 is $1080, the interest earned in year 2 is $86.40, the total balance at the end of year 2 is $1166.40, and the interest earned in year 3 is $93.31, and the total balance at the end of year 3 is $1259.71.
4)
We can use the formula for compound interest to calculate the interest earned and total balance at the end of each year for each savings account:
$100 at 7% for 4 years:
P = $100, r = 0.07, n = 1 (compounded annually), t = 4
Interest earned = $100 x 0.07 x 4 = $28
Total balance = $100 + $28 = $128 after 4 years
$500 at 8% for 3 years:
P = $500, r = 0.08, n = 1 (compounded annually), t = 3
Interest earned = $500 x 0.08 x 3 = $120
Total balance = $500 + $120 = $620 after 3 years
$300 at 6% for 5 years:
P = $300, r = 0.06, n = 1 (compounded annually), t = 5
Interest earned = $300 x 0.06 x 5 = $90
Total balance = $300 + $90 = $390 after 5 years
Therefore, the interest earned by the $100 savings account is $28, and the total balance at the end of 4 years is $128.
The interest earned by the $500 savings account is $120, and the total balance at the end of 3 years is $620.
The interest earned by the $300 savings account is $90, and the total balance at the end of 5 years is $390.
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Determine whether the given ordered pairs listed are solutions of the system of linear equations.
2x + y = 5
− 3x + 5y = − 1
(a) (b)(1,3) (2,1)
(a) Is (1,3) a solution?
(1, 3) is not a solution to the system of linear equations and (2,1) is a solution to the system of linear equations.
What are linear equations?
To check if the ordered pair (1, 3) is a solution to the system of linear equations:
2x + y = 5 ...(1)
−3x + 5y = −1 ...(2)
Substitute x = 1 and y = 3 in equations (1) and (2), respectively:
2(1) + 3 = 5 ...(1)
−3(1) + 5(3) = −1 ...(2)
Simplifying these equations:
2 + 3 = 5 (true)
−3 + 15 = −1 (false)
Therefore, (1, 3) is not a solution to the system of linear equations.
To check if the ordered pair (2,1) is a solution to the system of linear equations:
2x + y = 5 ...(1)
−3x + 5y = −1 ...(2)
Substitute x = 2 and y = 1 in equations (1) and (2), respectively:
2(2) + 1 = 5 ...(1)
−3(2) + 5(1) = −1 ...(2)
Simplifying these equations:
4 + 1 = 5 (true)
−6 + 5 = −1 (true)
Therefore, (2,1) is a solution to the system of linear equations.
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The graph shows g(x) = x2 − 9x + 20. graph of parabola falling from the left, passing through 3 comma 2 to about 4 and one half comma negative one fourth, and rising to the right, passing through 6 comma 2 What are the x-intercepts of g(x)? (4.5, 0) and (5, 0) (0, 4.5) and (0, 5) (0, 5) and (0, 4) (5, 0) and (4, 0)
Parabola intersects x-axis at two points: (-5,0) and (-4,0)
What does a parabola actually mean?
Each point on a parabola with a U-shape is equally spaced from both the focus, a fixed point, and the directrix, a fixed line. As the topic of conic sections depends heavily on the parabola, all of the parabola-related concepts are covered here.
The x-intercepts of a parabola are where the parabola intersects the x-axis on its graph. There are a number of ways to find the x-intercepts of a parabola, and each one is usually specific to each situation.
In the case, when you are given the graph, the easiest way to find x-intercepts is to identify points at which parabola intersects the x-axis.
From your graph, parabola intersects x-axis at two points: (-5,0) and (-4,0)
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Please help i need it!!!
Which has more kinetic energy, a 5 kg rock hitting a car at 25 m/s or a 10 kg rock hitting a car at 15 m/s? Use the formula kinetic energy = (½)mv². Show your work using the graphical equation tool (Σ button in the toolbar above the text box).
Answer:
Σ Kinetic energy of 5 kg rock hitting car > Σ Kinetic energy of 10 kg rock hitting car
Step-by-step explanation:
We can use the formula for kinetic energy, which is:
Kinetic energy = (1/2) x mass x velocity^2
Let's start by calculating the kinetic energy of the 5 kg rock hitting the car at 25 m/s:
Kinetic energy = (1/2) x 5 kg x (25 m/s)^2
Kinetic energy = 1562.5 J
Now let's calculate the kinetic energy of the 10 kg rock hitting the car at 15 m/s:
Kinetic energy = (1/2) x 10 kg x (15 m/s)^2
Kinetic energy = 1125 J
Therefore, the 5 kg rock hitting the car at 25 m/s has more kinetic energy than the 10 kg rock hitting the car at 15 m/s.
We can represent this visually using the following equations:
Kinetic energy of 5 kg rock hitting car = (1/2) x 5 kg x (25 m/s)^2 = 1562.5 J
Kinetic energy of 10 kg rock hitting car = (1/2) x 10 kg x (15 m/s)^2 = 1125 J
Σ Kinetic energy of 5 kg rock hitting car > Σ Kinetic energy of 10 kg rock hitting car
PLEASE HELP! URGENT AND WORTH 50 POINTS!!!
Answer:
C) 2, 7, 6 can form a triangle.
Step-by-step explanation:
Triangle Inequality TheoremThe triangle inequality theorem states that the sum of any two sides of a triangle is greater than the length of the third side.
To determine which group of given side measures will form a triangle, sum each pair of sides and compare to the third side. If all three inequalities are true, the group will form a triangle.
Given side lengths: 9, 4, 3
⇒ 9 + 4 > 3
⇒ 9 + 3 > 4
⇒ 4 + 3 [tex]\ngtr[/tex] 9
Therefore, this group cannot form a triangle.
Given side lengths: 8, 1, 7
⇒ 8 + 1 > 7
⇒ 8 + 7 > 1
⇒ 1 + 7 [tex]\ngtr[/tex] 8
Therefore, this group cannot form a triangle.
Given side lengths: 2, 7, 6
⇒ 2 + 7 > 6
⇒ 2 + 6 > 7
⇒ 7 + 6 > 2
Therefore, this group can form a triangle.
Given side lengths: 12, 10, 22
⇒ 12 + 10 [tex]\ngtr[/tex] 22
⇒ 12 + 22 > 10
⇒ 10 + 22 > 12
Therefore, this group cannot form a triangle.
help True or false.
A poet can include figurative language and context clues to contribute to the overall meaning of a poem.
True
False
The correct answer is true
Answer:
True hope this helps!
please helo me solve this
Answer:
We use thales theorem
Therfore the answer is 34
A triangular bookshelf has a base of 10 inches and 18 inches will the bookshelf fit in the corner of a square living room
No, if fit indicates that the bookcase's sides must be flush with the wall, which means that they must touch the wall and that the bookshelf is correctly positioned in that location.
What are triangles?A triangle is a polygon with three edges and three vertices.
It belongs to the basic geometric shapes.
A triangle having vertices A, B, and C is known as triangle ABC.
Any three locations in Euclidean geometry that are not collinear result in a distinct triangle and a distinct plane.
I've discovered that using the 3:4:5 triangle is the simplest way to determine for sure if an angle is 90 degrees.
This rule states that a triangle is a right triangle even if one of its sides is 3 and the other is 4 if the diagonal connecting its two points measures 5.
So, we must check to see if any of the bookcase's vertices measure 90 degrees because a square room will naturally have corners that do.
We may utilize Pythagorean Theorem to find the solution because every right triangle contains a 90° angle.
Pythagorean The a, b, and c are the legs, and the theorem states that a² + b² = c².
For our bookshelf, 10 and 12 are the legs, and 18 would be the hypotenuse if it were a right triangle as the hypotenuse is always the longest side.
To determine whether the equation is true or false, enter the values.
10² + 12² = 18²
100 + 144 = 324
244 ≠ 324
Thus, the bookshelf does not form a straight angle and cannot be placed in the room's corner.
Therefore, no, if fit indicates that the bookcase's sides must be flush with the wall, which means that they must touch the wall and that the bookshelf is correctly positioned in that location.
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Correct question:
A triangular bookshelf has a base of 10 inches,12 inches, and 18 inches. Will the bookshelf fit in the corner of a square living room?
According to the 2016 issue of Sociological Statistics, in the 2015, the mean weight for boys
in the 4th grade is 64.9 pounds. If we assume the mean is still 64.9, find the probability that
the mean weight for 100 boys in the 5th grade will be between 60 and 70 pounds. Assume
that s = 17.5 pounds.
The probability that the mean weight for 100 boys in the 5th grade will be between 60 and 70 pounds is approximately 0.674.
What is central limit theorem?According to the central limit theorem, a statistical theory, regardless of the population distribution's form, the distribution of sample means tends to resemble a normal distribution as sample size grows. This implies that the distribution of the sample means will be about normal if we take several random samples from a population.
Given that, mean weight for 100 boys in the 5th grade will be between 60 and 70 pound.
The z-score is given as:
z = (x - μ) / (s / √(n))
Substituting the values:
z = (70 - 64.9) / (17.5 / √(100)) = 1.143 = 0.674
z = (60 - 64.9) / (17.5 / √(100)) = -1.143 =0.674
Hence, the probability that the mean weight for 100 boys in the 5th grade will be between 60 and 70 pounds is approximately 0.674.
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Havin’ trouble with these questions, please help
Answer:
i have solved it step by step
A college professor claims that students who major in engineering in college score higher on standardized test then students who major in ancient history. He randomly selected 50 students from each subject and gave them this assignment the results of which are shown here.
See chart and answer choices in photo!
Please answer quickly, tysm!
The statement which best describe the correct null and alternative hypotheses, the test statistic, and conclusion at a significance level of 0.05 is:
D. H₀: μ₁ = μ₂ H₁: μ₁ < μ₂.
test statistic, t = -1.5625.
conclusion: fail to reject the null hypothesis μ₁ = μ₂.
How to determine and write the null and alternative hypotheses?Based on the information provided, the appropriate null hypothesis and alternative hypothesis would be represented by the following mathematical expression:
H₀: μ₁ - μ₂ ≤ 0; μ₁ = μ₂
H₁: μ₁ - μ₂ < 0; μ₁ < μ₂.
For the critical value, we have:
Critical probability (p*) = 1 - α
Critical probability (p*) = 1 - 0.05
Critical probability (p*) = 0.9500.
Based on the distribution table for probabilities, a value that corresponds to 0.9500 can be calculated as follows;
Zα = 1.6 + 0.05 = 1.65.
For an upper-tailed test, the critical value is given by;
Z_{critical} = 1.65.
Therefore, if Z_{test} > 1.65; reject null hypothesis (H₀) and if Z_{test} < 1.65; fail to reject null hypothesis (H₀).
Next, we would determine the test statistic:
[tex]Z_{test} = \frac{116 -121 -0}{\sqrt{\frac{16^2}{50} +\frac{16^2}{50} } } \\\\Z_{test} = \frac{-5}{\sqrt{\frac{256}{50} +\frac{256}{50} } }\\\\Z_{test} = \frac{-5}{\sqrt{10.24} }[/tex]
Z_{test} = -5/3.2
Z_{test} = -1.5625
In conclusion, we would fail to reject null hypothesis (H₀) since a Z_{test} of -1.5625 is less than a Z_{critical} of 1.65.
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At age 25 , someone sets up an IRA (individual retirement account) with an APR of 4 %. At the end of each month he deposits $95 in the account. How much will the IRA contain when he retires at age 65? Compare that amount to the total deposits made over the time period.
Question content area bottom
Part 1
After retirement the IRA will contain $
enter your response here.
(Do not round until the final answer. Then round to the nearest cent as needed.)
The formula for the future value of an annuity is FV = Pmt * (((1 + r)n - 1) / r) to calculate the balance of the IRA at age 65. To compare this amount to the total deposits made over the time period, Total Deposits = Pmt * n = $45,600.
How will you calculate the balance of the IRA?To calculate the balance of the IRA at age 65, we need to use the formula for the future value of an annuity:
FV = Pmt * (([tex](1 + r)^n[/tex] - 1) / r)
Where:
Pmt = $95 (the monthly deposit amount)
r = 4% / 12 = 0.003333 (the monthly interest rate)
n = (65 - 25) * 12 = 480 (the total number of months, assuming retirement at age 65)
Plugging in these values, we get:
FV = 95 * (([tex](1 + 0.003333)^480[/tex] - 1) / 0.003333)
FV = $98,052.52
Therefore, the IRA will contain $98,052.52 at age 65.
Part 2
To compare this amount to the total deposits made over the time period, we can calculate the total deposits as:
Total Deposits = Pmt * n
Plugging in the values, we get:
Total Deposits = 95 * 480
Total Deposits = $45,600
Therefore, the IRA will contain significantly more than the total deposits made over the time period, due to the power of compounding interest.
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After a certain number of years, the value of an investment account is represented by the equation A(t)=10,250(1+r0.4/12)^120 What is the value of the account?
The equation given is A(t) = 10,250(1 + r 0.04/12)^120. To solve for the value of the account, we need to calculate the right side of the equation. First, we need to calculate the exponent of 1+r 0.04/12. This is equal to 120, so the exponent is 120. Next, we need to multiply 10,250 by the exponent of 1+r 0.04/12. This will give us the value of the account. The answer is 1,895,167.50.
a tool box has the dimension of 8 in by 7 in by 4 in.
Answer: I'm not really sure what the question is but the volume is 224
Step-by-step explanation:
Madeleine helps build house with habitat for humanity. After exterior wall is erected she measures to see if it is a square. The height of wall is 9ft. She measures 12 ft along the floor from corner and takes a mark. What should be length of diagonal?
The Iength οf the diagοnaI οf the square exteriοr waII shοuId be 15 feet.
What is Pythagοrean Theοrem?Accοrding tο the Pythagοrean theοrem, the square οf a right triangIe's hypοtenuse (the side οppοsite the right angIe) equaIs the sum οf its οther twο sides' squares.
Outside waII's Iength and width are equaI if it is a square. Let's caII this Iength "x"
Using the Pythagοrean theοrem, we can find the Iength οf the diagοnaI οf the square:
diagοnaI² = height² + width²
Since the height is 9 ft and οne side οf the square is 12 ft, we can write:
diagοnaI² = 9² + 12²
diagοnaI² = 81 + 144
diagοnaI² = 225
Taking the square rοοt οf bοth sides, we get:
diagοnaI = √(225)
diagοnaI = 15 ft
Therefοre, the Iength οf the diagοnaI οf the square exteriοr waII shοuId be 15 feet.
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Please help need to get a good score
In the figure below, point O is the center of the circle and mRQ=35° . What is m∠POQ ? A. 125° B. 135° C. 70° D. 145°
Answer:
Step-by-step explanation:
A. 125
I need help with a problem on my test.
Write an exponential function to model the situation. Tell what each variable represents. A price of $115 increases 9% each month.
Please help
Answer: 1050$
Step-by-step explanation:
im a math teacher
Which relationships describe angles 1 and 2? Select each correct answer. O complementary angles O adjacent angles O vertical angles O supplementary angles
Answer:2
Step-by-step explanation:Because the 2 is closest to the middle line
Answer:
relationship describes angles 1 and 2 is supplementary angles. From the given figure
it is concluded that
the relation ship between angle 1 and 2 is supplementary angles
because its is linear pair
and forms a line
therefore , the angles are supplementary angles
hence , relationship describes angles 1 and 2 is supplementary angle
Step-by-step explanation: Hope this helps !! Mark me brainliest!! :))
pls help i dont get this one
Answer:
f(-2) = 0
Step-by-step explanation:
f(x) = (2x+4)/6 is a "rule" or like, directions. It says take your number, times by 2, add 4 and then divide by 6.
f(-2) just means to put -2 in place of x. Do the "rule" or follow the directions on the number -2.
f(x) = (2x+4)/6
f(-2) = (2•-2 + 4)/6
= (-4+4)/6
= 0/6
= 0
So f(-2) = 0
Which measurements could create more than one triangle?
A.
A triangle with sides measuring 50 mm and 35 mm and a nonincluded angle measuring 25°
B.
A triangle with sides measuring 5 cm, 10 cm, and 15 cm
C.
A triangle with sides measuring 8 cm and 12 cm and an included angle measuring 85°
D.
A triangle with sides measuring 5 inches, 7 inches, and 9 inches
Answer:
D. A triangle with sides measuring 5 inches, 7 inches, and 9 inches. This is because the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. In option A, the side lengths satisfy this condition since 50 + 35 > 25. In option B, the side lengths do not satisfy this condition since 5 + 10 < 15. In option C, the side lengths satisfy this condition since 8 + 12 > 85. In option D, the side lengths do not satisfy this condition since 5 + 7 < 9, 7 + 9 > 5, and 5 + 9 > 7.
Simplify the expression to a polynomial in standard form
(x−3)(2x^2 −5x−5)
Answer:
Step-by-step explanation:
To simplify the expression, we can use the distributive property of multiplication:
(x−3)(2x^2 −5x−5) = 2x^3 −5x^2 −5x −6x^2 +15x +15
Next, we can combine like terms:
2x^3 −5x^2 −6x^2 −5x +15x +15 = 2x^3 −11x^2 +10x +15
Therefore, the simplified polynomial in standard form is 2x^3 −11x^2 +10x +15.
1. Convert from English to metric.
a 1 foot = _______ millimeters
b. 40 lb-ft = ________ Newton/meters
2. Convert from metric to English.
a. 30 lb = _______ kilograms
b. 90.8 qt = ______ liters
3. 26 m = _______ µm (micrometer)
4. 60,000 cm = _______ m
5. 8.275 L = _______ kL
6. 0.00349 km = _______ cm
7. 0.00175 mm = _______ nm
8. Name the metric system unit that measures each of the following:
a. Light intensity
b. Mass
c. Pressure
d. Electric current
e. Distance
9. 1,200 Ω = _______ kΩ (kilohm)
10. 120 kΩ = _______ Ω (ohm)
11. 3,500,000 Ω = _______ MΩ
12. 6.03 MΩ = _______ Ω
13. 0.000355 A = _______ µA (microampere) 14. 0.000355 A = _______ mA (milliampere)
15. 863 mV = _______ V (volt)
16. 657 Ω = _______ kΩ (kilohm)
17. 35 µA = _______ A (ampere)
18. 2.2 kΩ = _______ Ω
19. 500 kV = _______ MV (megavolt)
20. 7,500,000 µA= _______ A
21. What’s 30 percent of 150?
22. What’s 25 percent of 2,300?
23. Historically, the _______ was used as the basis for all measurements.
24. The number below the line in a fraction indicating the number of equal parts into which the unit is divided is the _______.
25. In the English system, _______ is the traditional unit of pressure.
26. The metric system is based on powers of _______.
27. What unit is used for time in the metric system?
28. 20°C equals _______°F.
29. 45°F equals _______°C.
30. The basic volume unit in the English measuring system is the _______.
31. One ounce equals approximately _______ grams
Answer:Convert from English to metric.
a. 1 foot = 304.8 millimeters
b. 40 lb-ft = 54.24 Newton/meters
Convert from metric to English.
a. 30 lb = 13.61 kilograms
b. 90.8 qt = 96.25 liters
26 m = 26,000,000 µm (micrometer)
60,000 cm = 600 m
8.275 L = 0.008275 kL
0.00349 km = 349 cm
Name the metric system unit that measures each of the following:
a. Light intensity - Candela
b. Mass - Gram
c. Pressure - Pascal
d. Electric current - Ampere
e. Distance - Meter
1,200 Ω = 1.2 kΩ (kilohm)
120 kΩ = 120,000 Ω (ohm)
3,500,000 Ω = 3.5 MΩ
6.03 MΩ = 6,030,000 Ω
0.000355 A = 355 µA (microampere)
0.000355 A = 0.355 mA (milliampere)
863 mV = 0.863 V (volt)
657 Ω = 0.657 kΩ (kilohm)
35 µA = 0.000035 A (ampere)
2.2 kΩ = 2200 Ω
500 kV = 500,000 MV (megavolt)
7,500,000 µA = 7.5 A (ampere)
What’s 30 percent of 150? = 45
What’s 25 percent of 2,300? = 575
Historically, the _______ was used as the basis for all measurements. = Human body
The number below the line in a fraction indicating the number of equal parts into which the unit is divided is the _______. = Denominator
In the English system, _______ is the traditional unit of pressure. = PSI (pounds per square inch)
The metric system is based on powers of _______. = 10
What unit is used for time in the metric system? = Second
20°C equals _______°F. = 68°F
45°F equals _______°C. = 7.2°C
The basic volume unit in the English measuring system is the _______. = Gallon
One ounce equals approximately _______ grams. = 28.35 grams
Hunter surveys a random sample of 64 students at his community college and finds that
37.5% of the students saw a film at the local movie theater in the last 30 days. Find a 90% confidence interval for the proportion p of all students at the community college who saw a film at the movie theater in the last 30 days.
We can be 90% confident that the true proportion of all students who saw a film at the movie theater in the last 30 days is between 0.277 and 0.473.
What is proportion?
Proportion is a mathematical term that represents a relationship between two quantities or numbers. It refers to the comparison of one part of a whole to the whole itself.
To find a confidence interval for the proportion p of all students who saw a film at the movie theater, we can use the formula:
CI = p ± z * √(p(1-p)/n)
where p is the sample proportion, n is the sample size, z is the z-score corresponding to the desired level of confidence (90% in this case), and √(p(1-p)/n) is the standard error of the proportion.
First, we need to find the sample proportion p:
p = 37.5% = 0.375
Next, we need to find the z-score corresponding to a 90% confidence level. We can use a z-table or a calculator to find this value. The z-score for a 90% confidence level is 1.645.
Now we can plug in the values into the formula:
CI = 0.375 ± 1.645*√(0.375(1-0.375)/64)
Simplifying:
CI = 0.375 ± 0.098
Therefore, the 90% confidence interval for the proportion of all students who saw a film at the movie theater in the last 30 days is:
CI = (0.277, 0.473)
Hence, we can be 90% confident that the true proportion of all students who saw a film at the movie theater in the last 30 days is between 0.277 and 0.473.
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