Answer:
5tv. 9. v. 9. 9. o. o. o o. o. 9.
find the value of x.
Answer: 7.2
Step-by-step explanation:
help A S A P IM STUCK
Answer:
this is the unit area of: 24
Step-by-step explanation: hope this helps
Which equation is true for x = –6 and x = 2? 2x2 – 16x 12 = 0 2x2 8x – 24 = 0 3x2 – 4x – 12 = 0 3x2 12x 36 = 0
The equation that is true for x = -6 and x= 2 is given by: Option B: 2x^2 +8x -24 = 0
What are those values of the variables called for which an equation is true?Suppose there is an equation given, involving some variables.
Then, those values of the involved variable, for which the equation is true, are called solution of the equation.
For single variable equations, specially for polynomials, these solutions are called the roots of the equation.
How to find the roots of a quadratic equation?Suppose that the given quadratic equation is
[tex]ax^2 + bx + c = 0[/tex]
Then its roots are given as:
[tex]x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}[/tex]
For this case, the options are all quadratic equations, so we can check all the options to find the roots to see if they match to x = -6 and = 2
Option 1: [tex]2x^2 -16x + 12 = 0[/tex]Then its roots are given as:
[tex]x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a} = \dfrac{-(-16) \pm \sqrt{(-16)^2 - 4(2)(12)}}{2(2)}\\\\x = \dfrac{16 \pm \sqrt{196 - 96}}{4} = \dfrac{16 \pm 10}{4}\\\\x = 26/4, x = 6/4[/tex]
Thus, this equation isn't true for both x = -6 and x= 2
Option 2: [tex]2x^2 +8x -24 = 0[/tex]Then its roots are given as:
[tex]x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a} = \dfrac{-8 \pm \sqrt{(8)^2 - 4(2)(-24)}}{2(2)}\\\\x = \dfrac{-8 \pm \sqrt{64 +192}}{4} = \dfrac{-8 \pm 16}{4}\\\\x = -6, x = 2[/tex]
Thus, this equation is true for both x = -6 and x= 2
Since the question says "Which equation is true", so that means only one option is true.
Thus, the equation that is true for x = -6 and x= 2 is given by: Option B: [tex]2x^2 +8x -24 = 0[/tex]
Learn more about finding the solutions of a quadratic equation here:
https://brainly.com/question/3358603
Answer:
b
Step-by-step explanation:
edge
The base of a merry-go-round spans an area of about 153.88 square meters What is the radius of
the merry-go-round?
Nysean says the radius of the merry-go-round is 14 meters. Do you agree or disagree? Explain.
Answer:
Disagree
radius = 7 m
diameter = 14 m
Step-by-step explanation:
Formula
[tex]\sf Area\:of\:a\:circle=\pi r^2[/tex]
Given:
area = 153.88 m²Substitute given value into the formula and solve for r:
[tex]\sf \implies \pi r^2=153.88[/tex]
[tex]\sf \implies r^2=\dfrac{153.88}{\pi}[/tex]
[tex]\sf \implies r=\sqrt{\dfrac{153.88}{\pi}}[/tex]
[tex]\sf \implies r=6.998680253[/tex]
Therefore r ≈ 7 m
So I disagree with Nysean, as from my calculations, the approximate radius of the merry-go-round is 7 m.
Diameter = 2r
⇒ diameter of merry-go-round = 2 x 7 = 14m
So Nysean has actually given the approximate measure of the diameter rather than the radius.
Which of the following does not have a value that is greater than 0?
|-11|
-11
|11|
11
Answer:
-11
Step-by-step explanation:
The | | around a number means the absolute value of that number. The absolute value is the positive value of the number given.
PLEASE HELP ME ANSWER THIS QUESTION
Answer:
Scale faction is 4
Step-by-step explanation:
You want to step this up as new/old this is because the shape is increasing in size. 18 times 4 is 72.
At a neighbor's garage sale, Rodrigo purchased a big bag of assorted bolts, nuts, screws, and washers. He picks a piece out of the bag, records its type, puts it back in the bag, and mixes them up. He does this 18 times and counts 3 bolts, 6 nuts, 5 screws, and 4 washers.
Based on the data, what is the probability of choosing a washer?
Write your answer as a fraction or whole number.
What is the factored form of the function? what are the zeros of the quadratic function?
Answer:
The factored form of the equation is f(x) = (x - 2)(x + 10), which makes the zeros of the function x = -10 and x = 2.
In order to factor a quadratic like this, you must find factors of the constant (in this case -20). The pairs of factors are listed below.
1 and -20
-1 and 20
2 and -10
-2 and 10
4 and -5
-4 and 5
Now we must pick out the pair that add to the coefficient of x.
1 and -20
-1 and 20
2 and -10
-2 and 10
4 and -5
-4 and 5
Once you've picked out those numbers, you can place each in a parenthesis with x.
f(x) = (x - 2)(x + 10)
Then to find the zeros to the equation, set each parenthesis equal to 0 and solve.
x - 2 = 0
x = 2
x + 10 = 0
x = -10
Step-by-step explanation:
hope this helps:)
One company makes inflatable swimming pools that come in four sizes of rectangular prisms.
The length of each pool is twice the width and twice the depth.
The depth of each pool is a whole number from 3 to 6 feet.
If the pools are filled all the way to the top, what is the volume of each pool?
Answer:
Pool 1: 2(3)*3*3= 54 ft^3
pool 2: 2(4)*4*4= 128 ft^3
Pool 3: 2(5)*5*5= 250 ft^3
pool 4: 2(6)*6*6= 432 ft^3
Step-by-step explanation:
length can be modeled by twice the width or twice the depth which means that deapth=width,
both the width and the depth are equal, hence
L= 2x
W=X
x=3,4,5,6 (which are values for depth as well as width)
susbtitute values:
Pool 1: 2(3)*3*3= 54 ft^3
pool 2: 2(4)*4*4= 128 ft^3
Pool 3: 2(5)*5*5= 250 ft^3
pool 4: 2(6)*6*6= 432 ft^3
Solve for the unknown value.
x = _____ degrees
Answer:
x= 89°
Step-by-step explanation:
Let's use the rule of corresponding angles.
x+ 32°= 121° (corr. ∠s)
x= 121° -32°
x= 89°
if the area of a circle is 154 cm square then find the diameter and circumference
Answer:
Diameter = 14 cm
Circumference = 44 cm
Step-by-step explanation:
Area of circle = πr²Diameter = 2rCircumference = 2πr = πdπ ≈ 3.142[tex]\pi {r}^{2} = 154 \\ {r}^{2} = \frac{154}{\pi} \\ r = \sqrt{ \frac{154}{\pi} } \: cm[/tex]
[tex]Diameter = 2r \\ = 2 \sqrt{ \frac{154}{3.142} } \\ ≈ 14 \: cm[/tex]
[tex]Circumference = πd \\ = 14\pi \\ = 14 \times 3.142 \\ = 43.988 \\ ≈ 44 \: cm[/tex]
HELP PLEASE ASAP
Which situation can be represented by the equation y = 25x
Question 1 options:
David earned y amount of money at a rate of $25 per x hours.
David earned $25 for one day, which x amount is earned for y number of days.
David earned x amount of money at a rate of $25 per y hours.
David earned $25 for one day, which y amount is earned for x number of days.
The situation that best represents the equation y = 25x is David earned y amount of money at a rate of $25 per x hours.
Using equations to represent expressionsRate of payment is the amount of money a worker receives after each hour, day or week.
David receives the amount of y as his payment every hour.
He is paid at the rate of $25 every X hours.
Therefore the amount he will receive which is represented as y would be $25 * X hours.
Learn more about rates here:
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1.) The ratio of the number of men to the number of women in a concert is 3 : 5. If there are 4800 people at the concert, how many are men? How many are women?
2.) Alice can type 65 words in 1 min. How many minutes would it take her to type an essay 2275 words long?
3.) Mrs. Ong divided her property worth P 3, 480, 000 between her two children in the ratio of 3 : 5. How much was the bigger share?
4.) In 2 minutes , Mario can run 1800 m. How far can he run in 6 min?
5.) Cielo gets 2 hits out of every 3 times at bat. If she got 16 hits, how many times was it at bat?
6.) Three friends shared in the capital of putting up a computer business in the ratio of 4 : 5 : 6. If the total amount of capital is P450 000, how much was the smallest share?
Answer:
1.) men: 1800, women: 3000
2.)2275/65 = 35 mins
3.)P 2,175,000
4.) 5400 in 6 mins
5.) Probably 5?
6.) P 120 000
Step-by-step explanation:
A password is 4 characters long, consisting of 2 letters and 2 numbers. the password must begin and end with a letter. if numbers can be repeated but letters cannot, how many possibilities are there? a. 65,000 b. 60,840 c. 58,500 d. 52,650 please select the best answer from the choices provided. a b c d
The question is an illustration of arrangements, and the number of possibilities of the password is 65000
How to determine the number of possibilities?The length of the password is:
Length = 4
If the password begins and ends with a letter and cannot be repeated, then the possibilities are:
First = 26
Last = 25
If the password contains numbers that can be repeated, then the possibilities are:
Number 1 = 10
Number 2 = 10
So, the number of possibilities is:
Possibilities = 26 * 10 * 10 * 25
Evaluate the product
Possibilities = 65000
Hence, there are 65000 possibilities of a 4 character password
Read more about arrangements at:
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Choose one answer: A: 13+t=17
B:13t=17
Find the value of t that makes the equation true
Answer:
a: 13 + t = 17
Step-by-step explanation:
the top is equal to the bottom
the top is 13 and t together but you are not multiplying
thus the answer is 13 + t = 17
Answer:
A, 13+t=17
Step-by-step explanation:
Since you are trying to find the missing part of the diagram and both rows add up to 17, the answer would be A. This is the case because you aren't multiplying 13 over and over to get 17, rather instead you are adding a number to get 17.
Find the solution to the equation below.
Answer:
Answer is G 1.5
Step-by-step explanation:
1. Distribute the 5 to x and 2 by multiplying. and the 7 to the 4 and -x by multiplying
2. carry over the 7x by adding it to 5x. to get x to one side.
3. subtract 10 from both side
4. Divide both side by 12
5. simplify and convert to decimal
for 30 POINTS
pls help me rn
this is very urgent
thx in advance
Two numbers have a least common multiple of 48 and a greatest common factor of 4?
Answer:
The numbers are 12 and 4
Step-by-step explanation:
12÷4=3
4÷4=1
12×4=48
Shaunta is developing a recursive formula to represent an arithmetic sequence in which 5 is added to each term to determine each successive term. which formula could represent her sequence? f(n 1) = f(n) 5 f(n 1) = f(n 5) f(n 1) = 5f(n) f(n 1) = f(5n)
Answer:
f(n+1) = f(n)+5
Step-by-step explanation:
So lets say
f(1)=5
f(2)=10
1+1=2 so
f(2)=f(1+1)
therefor
f(n+1)=f(n)+5 since the difference of the functions is 5
the answer is A f(n+1)=f(n)+5
we know that
An arithmetic sequence is a sequence of numbers which increases or decreases by a constant amount each term
In this problem
the sequence of numbers increase by a constant amount equal to
5
each term
so
f(2)=f(1)+5
f(3)=f(2)+5
f(4)=f(3)+5
.
.
f(n+1) = f (n) + 5
therefore
the answer is the option
f(n + 1) = f(n) + 5
Answer:
A
Step-by-step explanation:
Find the common ratio of the sequence.
1,-1, 1,-1...
Solve by factoring
3v^2-10v+3=
[tex]3v^2-10v+3=0\\\\\implies 3v^2 - 9v-v +3=0\\ \\\implies 3v(v-3)-(v-3)=0\\\\\implies (v-3)(3v-1)=0\\\\\implies v = 3,~~v=\dfrac 13[/tex]
A softball player has had 8 base hits out of 25 at bats for a current batting average of 8/25 = .320. How many consecutive base hits does she need if she wants to raise her batting average to .400? Explain or show your reasoning.
Using proportions, it is found that she needs 4 consecutive hits to raise her batting average to .400.
What is a proportion?A proportion is a fraction of a total amount.
Hence, the batting average is given by the number of hits divided by the number of at-bats.
If she gets x consecutive hits, she will have 8 + x hits in 25 + x at-bats, for an average of 0.400, hence:
[tex]0.4 = \frac{8 + x}{25 + x}[/tex]
8 + x = 10 + 0.4x
0.6x = 2
x = 3.33
Rounding up, she needs 4 consecutive hits to raise her batting average to .400.
More can be learned about proportions at https://brainly.com/question/24372153
y=65x+50
what is this equation equal
The area of a triangle is 115 in2. If the height of the triangle is 7.5 inches, what is the length of its base? Round to the nearest hundredth, if necessary.
Answer:
30.67 inches
Step-by-step explanation:
Area of a triangle: 1/2 x b x h
115 = 1/2 x b x 7.5
115 = 3.75b
115/3.75 = b
30.66666 = b
30.67 = b
What’s the surface area of this tent? length:10.5.
Width:8
height:7
Answer:
427
Step-by-step explanation:
i could be wrong i used surface area calculator
Slope intercept form of x intercept=3 y intercept=-5
Answer:
[tex]y = \frac{5}{3} x - 5[/tex]
Step-by-step explanation:
To write an equation in the slope-intercept form, we need the slope (which can also be calculated) and at least a coordinate.
What is slope-intercept form?
y= mx +c, where m is the slope and c is the y-interceptWhen the coefficient of y is 1, and all the other terms are on the right-hand side of the equationx- intercept occurs at y= 0 while y-intercept occurs at x= 0. With this information, let's write out the two coordinates given.
(3, 0) and (0, -5)With two coordinates, we can calculate the slope using the equation below.
[tex]\boxed{ slope = \frac{y _{1} - y_2 }{x_1 - x_2} }[/tex]
[tex]slope = \frac{ - 5 - 0}{0 - 3} [/tex]
[tex]slope = \frac{ - 5}{ - 3} [/tex]
[tex]slope = \frac{5}{3} [/tex]
Substitute the value of the slope into m in the equation.
[tex]y = \frac{5}{3} x + c[/tex]
Given that the y-intercept is -5, c= -5.
[tex]y = \frac{5}{3} x - 5[/tex]
Consider two unique parallel lines. What aspects of these
two lines are the same? What aspects of these two lines
would have to be different? Explain your reasoning.
Answer:
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░░░█▀▄▄▄█░▀▀░░
░░░▌░▄▄▄▐▌▀▀▀░░ This is Bob
▄░▐░░░▄▄░█░▀▀ ░░
▀█▌░░░▄░▀█▀░▀ ░░ Copy And Paste
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Step-by-step explanation:
А
. Which phrase represents the
expression 8x + 5?
eight times five plus a number
B five times a number plus eight
Cfive less than a number
multiplied by eight
D a number multiplied by eight
then added to five
Answer:
D i think a number represents x. not sure
Answer:
8x+5
Assume x is the unknown number.
8x+5 means
8*x = a number multiplied by eight
8x+5 = a number multiplied by eight eight then added to five.
Therefore, the correct option is D.
A credit card company is collecting data for their end of the year review. The chart below shows the interest change for the year that they will use to market to new customers.
What is the mean interest change for the year? Group of answer choices
A. 20%
B. 5%
C. 2%
D. 4%
the answer of the year is 20%
Monica made this object from snap cubes. Monica made 9 more objects just like this one. she laid them one next to the other to form a square. Monica said she could use the square to write a percent and a decimal for 6/10 and for 4/10. is she correct?
The fraction 6/10 and 4/10 can be represented by using the objects laid together to form a square.
What is an equation?
An equation is an expression that shows the relationship between two or more variables and numbers.
The fraction 6/10 and 4/10 can be represented by using the objects laid together to form a square.
Find out more on equation at: https://brainly.com/question/2972832
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