Given f(x) = 2x +9. Find f(-7) *
Your answer

Answers

Answer 1

Answer:

f(-7) = -5

Step-by-step explanation:

We want to find what f(x), or y is, when x is equal to -7.

f(x)=2x+9

Therefore, we can substitute -7 in for x.

f(-7)=2(-7)+9

Now, solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition and Subtraction.

Multiply 2 and -7 first.

f(-7)= -14+9

Add -14 and 9

f(-7)=-5

Answer 2
Just commenting on this to make the other person brainliest since they have all the work right

Related Questions

Find the area. Will mark brainliest.

Answers

Answer:

a = 70

Step-by-step explanation:

a = h * b / 2

a = 10 * 14 / 2

a = 140/2

a = 70

If the probability of a chance event is 0.67, it is less likely to happen
than which of the following probabilities of another chance event?
Select one:

0.76

0.61

0.65

0

Answers

Answer:

.76

Step-by-step explanation:

The points (-16,r) and (-4,11)lie on a line with slope 1/2. Find the missing coordinate r?

Answers

Answer: The missing coordinate R is 5.

Step-by-step explanation:

11=1/2(-4) + B

11=-2 +B  

B= 13

B represents the y-intercept

so we will use the equation y=mx + B  and we know the slope and y intercept.

r= 1/2(-16) + 13

r= 5

Using Identity, find the value:
i) 203 x 205
Plss I NEED HELP!!! T^T

Answers

Step-by-step explanation:

203*205

(200+3)*(200+5)

200²+200(5+3)+15

40000+3000+15

403015

100 pts!!!! PLEASE HELP!!!!!

Answers

Answer:

1)3/4

2)3

3)12 MILES

4)2.5 pounds

5)5/8 pounds

am not sure but hopefully it helps you!!!!!!

Answer:

the person above is correct

Step-by-step explanation:

Simplify: 327
A)
3
B)
4
0)
7
D)
8

Answers

You can’t simplify it because it’s a already a whole number.

This graph shows a proportional relationship. (2/3, 3/4)


What is the constant of proportionality?

Answers

Answer: Hi! I'd love to help you but I'd need to see the graph.

Step-by-step explanation: Can you add a picture?

top side is 6 just couldn’t fit in picture

Answers

Answer: [tex]6<z<18[/tex]

Step-by-step explanation:

Use the pythagorean theorem to find z first.

[tex]c^2=a^2+b^2\\c=\sqrt{a^2+b^2}[/tex]

a = 12

b = 6

c = z

[tex]c=\sqrt{(12)^2+(6)^2}\\ c=\sqrt{144+36}\\ c=\sqrt{180} \\c=13.4[/tex]

z is greater than a and b

What value cannot be determined from the box and whisker plot?

A. median

B. mean

C. range

D. interquartile range

Answers

D is the answer thank

Answer: The answer is B. Mean :)

Collete mapped her vegetable garden on the graph below. Each unit represents 1 foot.
Collete plants an 8-foot row of lettuce in the garden. Which points could tell where the row of
lettuce starts and ends?
(-1,-6) and (8, –6)
(-4, -1) and (-4,7)
(-6, -1) and (-6,8)
(-1,-4) and (7,-4)
Help pls

Answers

Answer:

(-4,-1) and (-4,7)

Step-by-step explanation:

If Collete planted a row of lettuce, that means their coordinates must have the same vertical coordinate, or the same horizontal coordinate. Another important characteristic is that between those points, there must have 8 units of separation, because it's an 8-foot row.

Only the first choice offers these characteristic to properly represent the row of plants with 8 feet distance between the first and the last plant.

Therefore, the answer is (-4,-1) and (-4,7)

2)..... 1/4 x -2/5 x = 39

Answers

Answer:

x=-260

Step-by-step explanation:

1/4x-2/5x=39

Find a common denominator:

5/20x-8/20x=39

Combine:

-3/20x=39

Multiply both sides by -20/3:

x=39(-20/3)

x=-780/3

x=-260

Hope this helps! Please mark brainliest :)

HELP ME QUICK PLZ WITH THIS MATH PROBLEM!!!!!!!!!!!!!!

Answers

Answer:

I believe it’s 1/2

Step-by-step explanation:

Take a point on the graph and use rise over run method

Answer:

D. 5/8 pounds

Step-by-step explanation:

You can find the slope by picking a point such as (8,5).

Slope = rise over run.

(8,5) is 8 units right and 5 units up, thus the slope is 5/8

Hope this helps.

John recorded the weight of his dog Spot at different ages as shown in the scatter plot below.




Part A:
Write an equation that would describe the line of best fit.


Part B:
Using the line of best fit, make a prediction of Spot's weight after 18 months.

Answers

Answer:

A) y = 1.875x + 1.25

B) 35 pounds

Step-by-step explanation:

A) We need two points to define a line. To find an equation that would describe the line of best fit, we can use one of the first points and one of the last points. Let's use (2, 5) and (10, 20).

General equation of a line:

y = mx + b

Slope of the line:

m = (20 - 5)/(10 - 2) = 1.875

y-intercept is found replacing a known point and the slope into the general  equation:

5 = 1.875*2 + b

b = 5 - 1.875*2 = 1.25

The final equation is:

y = 1.875x + 1.25

where y represents weight (in pounds) and x represents age (in months)

B) At x = 18:

y = 1.875*18 + 1.25 = 35

Can someone please help me with these problems?

Answers

Answer:

number 1 is 5 inches

Step-by-step explanation:

it fits in the 15 inches 3 times.

5*3=15

The data below show the weights, in pounds, of a group of professional football players.
325, 310, 289, 288, 285, 285, 285, 280, 280, 273
The mean of the data set is 290 pounds. What is the mean absolute deviation of the data
set, to the nearest whole number?
26
18
11
5

Answers

Answer:

26

Step-by-step explanation:

The mean absolute deviation of the data is 11.

The mean absolute deviation (MAD) of a data set is the average distance between each data value and the mean.

To find the mean absolute deviation of the data, start by finding the mean of the data set. Find the sum of the data values, and divide the sum by the number of data values.

Given: The data below show the weights, in pounds, of a group of professional football players.

325, 310, 289, 288, 285, 285, 285, 280, 280, 273

The mean of the data set is 290 pounds.

How to find the mean absolute deviation of the data

set, to the nearest whole number?

The average absolute deviation is

[(325-290)+(310-290)+|(289-290)|+|(288-290)|+3|(280-290)|+21(280-290)|+|(273-290)|]/10

=> (35+20+1+2+5+5+5+10+10+17)/10

=> 11.

Learn more about mean on : https://brainly.com/question/16432219

#SPJ2

what is the equation of the line passing through ( -5, -3 ) and perpendicular
to the line representing the equation y = - 5/7x + 2?

Answers

Answer:

y = 7/5x + 4

Step-by-step explanation:

use the slope from the equation -5/7 and take the negative reciprocal to get the perpendicular slope = 7/5. Then use the equation y=mx+b. Plug in x and y from the point given and the new slope and solve for b.

(-3) = (7/5)(-5) + b, (-3) = -7 + b, add 7 to both sides. b = 4. Rewrite the equation now to be y = 7/5x + 4

i need help!!!

y=x-7
y=6


simplify the answer as much as possible

Answers

Answer:

x=13 and y =6

Step-by-step explanation:

y=x-7

y=6

Substitute y=6 into the first equation

6 = x-7

Add 7 to each side

6+7= x-7+7

13 = x

x=13 and y =6

Answer & Explanation :

1. x-7=6 Find x

2. Add 7 to both sides to make x alone.

3. x=13

4. Find y

5. y=6

6. Check your work:
Plug in the value of x to this equation, y=x-7

X=13 so y=13-7
This means that y=6 and x=13

I hope this helps you!!!

Find the inverse function in slope intercept

Answers

Answer:

y= -5/4+ 20

Step-by-step explanation:

1. switch x and y

2. multiply both sides by 5

3. divide both sides by -4

14. Given the lengths of the sides of a triangle, which of the following is a right
triangle
Triangle A: 10, 12, 15
Triangle B: 3,4,5
Triangle C: 7.8.9
Triangle D: 5. 12. 16

Answers

B (It's 90's degree triangle)
The answer is B. it’s a 90 degree

At the end of the school year a school system has a table with the total absences and tardies in its 10 schools what is the best way to display these data?

A. Bar Graph
B.Circle Graph
C. Stem and leaf plot
D.Ogive graph

Answers

Answer:

A

Step-by-step explanation:

What is a reasonable estimate for the volume of a number cube:
8 cm3, 27 in?, or 1 ft??

Answers

Answer:

I think the 8 cm one :D

hi what is the answer to c

Answers

I believe it should be 0.6mi/ m. Because 30/50=0.6

The length of the rectangle is 3 feet less than twice its width.
The area of the rectangle is 35 ft? . What is the length of the
rectangle?​

Answers

Answer:

I think it’s 14.5 but if I am wrong correct me plz

Step-by-step explanation:

For this Prism to be a right prism, all the lateral faces must be rectangles. Is enough infromation given to prove the lateral faces are rectangles? Why or why not?

Answers

Answer:

No, there isn't enough information to prove that the lateral faces are rectangles

Step-by-step explanation:

Trinomial in factored form 5y^2-y-18

Answers

Answer:

Step-by-step explanation:

(5y + 9)(y - 2) is the solution

5y^2 - 10y + 9y - 18

Answer:

(5y+9)(y-2)  i think

What is the distance?

Answers

Answer:10,800

Step-by-step explanation:

im not sure but what i did was 90x120=10800

Answer:

150 m

Step-by-step explanation:

By pythagoras theorem:

Diagonal² = 120² + 90³

Diagonal² = 14400 + 8100

Diagonal² = 22500

Diagonal = 150 m

How much greater is 42 inches than
1 yard? Explain.

Answers

Answer:

6 inches

Step-by-step explanation:

1 yard =36 inches

36 inches< 42 inches

42-36 inches = 6 inches

Answer:

.1666676

Step-by-step explanation:

1 in = 0.0277778 yard

42  × 0.0277778 = 1.1666676

1.1666676 - 1 = .1666676

so 42 inches is .1666676 greater than 1 yard

Which of these are NOT expressions?
Check all that are true.

123

9 + 3 = 12

3(4x + 5)

6 − 5 − 4 = z

3z + 2x


HELP

Answers

Answer:

6-5-4=z

9+3=12

Step-by-step explanation:

Expressions has no equal sign

“9 + 3 = 12” and “3(4x + 5)”

Which of the following best describes the equation below? y = 5x - 15
a.neither linear or non linear
b.non linear
c.both linear and non linear
d.linear

Answers

The answer is d because 3x5=15

Answer:

D linear

Step-by-step explanation:

We can tell pretty easily that this is a linear equation. How? Look at the highest degree of x!

This means the highest exponent of x. It looks like we have 5x, which you can think of as 5x to the first power. Whenever the highest exponent is 1, the equation is linear.

What is the area of the polygon with verticals

Answers

It is I think 20 units
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