Answer:
f(7) is -17
Step-by-step explanation:
Plug in seven for x:
-2 (7) + 3 (4-5)
-14 + 3 (-1)
-14 + -3
-17
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:)
HELP PLEASE ASAP!!!
Carol asked a random sample of 10 seventh grade student athletes and 10 seventh grade students who are not athletes how much time, in minutes, they spend studying each weeknight. She recorded her results in the table
Student Athletes: 103, 62, 21, 100, 140, 65, 124, 45, 86, 114
Not Student Athletes: 101, 135, 122, 43, 110, 62, 31, 80, 67, 126
A) Calculate the mean and median data values for the student athletes sample
B) Calculate the mean and median data values for the not student athletes sample.
C) When comparing the two samples, what conclusions can you draw about which group spends more time studying each weeknight?
Answer:i dont know sorry but i think its c
Step-by-step explanation:
i just need the answer to it and then ill do the labels
Answer:
x = 23
Step-by-step explanation:
2x -3 + 47 = 90
2x = 46
x = 23
What's the equation of the line that passes through the points (–8,4) and (0,22)?
Answer:
c
Step-by-step explanation:
y=65x+50
what is this equation equal
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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░░░░▄▄▄██▀▀▀▀░░░░░░░
░░░█▀▄▄▄█░▀▀░░
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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.
for 30 POINTS
pls help me rn
this is very urgent
thx in advance
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:
The area of a rectangle is 46.56 mm2.
If the width is 9.7 mm, find the length.
Answer:
The length is 4.8 mm
Step-by-step explanation:
The area of a rectangle is calculated by multiplying the length times the width. So:
46.56 = l * w
46.56 = l * 9.7
To find the length, we must get "l" alone. To do this, we must divide both sides by 9.7.
46.56/9.7 = 4.8
4.8 = l
The length is 4.8
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
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:
https://brainly.com/question/22846480
4. A liter is equal to 1000 cm3. How many liters of water are needed to fill a cylindrical tank that is 1.1 m long and a radius of 0.3 m? A. 150.72 L B. 200.27 L C. 300.72 L D. 310.86 L hold nn ml water How much
Answer:
D. 310.86 L
Step-by-step explanation:
[tex]\textsf{Volume of a cylinder}=\pi r^2h[/tex]
where:
[tex]r[/tex] is the radius[tex]h[/tex] is the heightGiven:
r = 0.3 mh = 1.1 m[tex]\pi[/tex] = 3.14[tex]\implies \sf \textsf{Volume of the tank}=(3.14)(0.3)^2(1.1)=0.31086\:m^3[/tex]
[tex]\sf 1\:liter = 1000\:cm^3[/tex]
To convert cubic cm to cubic meters, divide by 1,000,000:
[tex]\implies \sf 1\:liter =\dfrac{1000}{1,000,000} = 0.001\:m^3[/tex]
[tex]\implies \sf \textsf{Volume of the tank}=\dfrac{0.31086}{0.001}=310.86\:L[/tex]
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.
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
find the value of x.
Answer: 7.2
Step-by-step explanation:
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
If f (x) = startroot one-half x minus 10 endroot 3, which inequality can be used to find the domain of f(x)? startroot one-half x endroot greater-than-or-equal-to 0 one-half x greater-than-or-equal-to 0 one-half x minus 10 greater-than-or-equal-to 0 startroot one-half x minus 10 endroot 3 greater-than-or-equal-to 0
A function assigns values. The inequality one-half x minus 10 greater-than-or-equal-to 0 should be satisfied.
What is a Function?A function assigns the value of each element of one set to the other specific element of another set.
The domain of a function is a set of values for which the equation is satisfied. Since the function has under root values, the value which is under the root should be non-negative so that it does not give a complex number, therefore,
The inequality [tex]\sqrt{\dfrac12x^2-10}\geq 0[/tex]satisfied to find the domain of the function f(x).
Also, we can write that 0.5x²-10≥0 for the value to be positive.
Hence, the inequality one-half x minus 10 greater-than-or-equal-to 0 should be satisfied.
Learn more about Function:
https://brainly.com/question/5245372
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
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.
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.
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
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°
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:
Lauren made a scale drawing of a city park. The scale she used was 1 centimeter : 8 meters. If the soccer field is 14 centimeters long in the drawing, how long is the actual field?
Answer:
112
Step-by-step explanation:
1:8
14:x
8x14=112
X=112
Answer:
112 m
Step-by-step explanation:
1 cm : 8 m
14 cm : ?
= 14 x 8
= 112 m
Sharon has at most $25 to spend on her sister's birthday gift. She already bought a knitting machine for her, which cost $14.99. She would also like to get her sister some skeins of yarn to go with it. Each skein costs $2.75. Write an inequality to represent this problem. Use y to represent the number of skeins of yarn. What is the most number of skeins Sharon can afford to buy? Justify your answer in two or more complete sentences.
Answer:
$25 >= 14.99+2.75x
Step-by-step explanation:
Find the common ratio of the sequence.
1,-1, 1,-1...
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
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]
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.