Mathematics High School

Solve f(x) = 2x + 2 what would f(x)=20

a. 20
b. 10
c. 9
d. 8​

Answers

Answer 1

Answer:

the answer is c. 9

Step-by-step explanation:

20=2x+2

18=2x

x=9

Answer 2

Answer:

C

Step-by-step explanation:

Given f(x) = 2x + 2 and f(x) = 20, then equate right sides, that is

2x + 2 = 20 ( subtract 2 from both sides )

2x = 18 ( divide both sides by 2 )

x = 9 → C

Related Questions

NO LINKS PLEASE!

54 is equal to 75% of a number n. Write and solve an equation to find n. Write the percent as a decimal.

Answers

Answer:

Set this up as a proportion.

54/n = 75/100

Now solve for n and finish from here.

Can i also have brain or a heart :)

Answer:

x would equal 72

Step-by-step explanation:

you can find a percent but there is already a percent showing. So the answer should be 72.

When you're trying to find the answer to these problems you should check if there is a percent part and whole. In this question, there is already a percent and a part so you would just try to find the whole.

BRAINLY TO WHOEVER CAN HELP PLS OMG ASAP

Answers

Answer:

1: C

2:A

Step-by-step explanation:

Dialation is just the multiplucation of the size. If the original point is 2, 4 dialated to 2 is would be 4, 8. Basiccly just multiply by 2 in this example.

Which has the greater value, -4 or -5?

please step by step

Answers

Answer:

-5 is the greater value

Step-by-step explanation: because they are both negative but if the other one is positive and the other one is negative, the positive is the greater value.

What is mpo?
128°
O 1730
O 1920
O 256°

Answers

Answer:

it's the 2nd one because

Step-by-step explanation:

have a nice day

Please help! Will give good rating

Answers

Answer:

88 ft²

Step-by-step explanation:

Find the area of the shaded region:

8x16= 128

Find the area of the un-shaded region:

5x4=20

20x2 regions= 40 ft² total

since the unshaded region is excluded from the shaded region subtract the area of the shaded region by the area of the unshaded region

128-40= 88

A= 88 ft²

I need help subtracting integers!! THIS IS TIME SENSITIVE!!

Answers

remember that two negatives equal a positive
3 + (-8) = -5
-9 - (-4) = -5
7 - (-5) = 12
6 - (-4) = 10
and so on

Mhanifa can you please help? Look at the picture attached. I will mark brainliest!

Answers

Answer:

(2,1)

Step-by-step explanation:

Answer:

Diagonals of a parallelogram bisect each other

Given vertices:

(-2,-1), (1,3), (6,3), (3,-1)

Plot the points.

We see the diagonals are:

(-2,-1) (6,3)  and (1,3), (3,-1)

The midpoint of any diagonal is the intersection of the diagonals.

Use midpoint formula to find the coordinates:

x = (x₁ + x₂)/2 = (-2 + 6)/2 = 4/2 = 2y = (y₁ + y₂)/2 = (-1 + 3)/2 = 2/2 = 1

The point is (2, 1)

Kosey needs to get 80% of his
questions correct on his math test
to get a B for the quarter. If his
test has 60 questions, how many
questions will he need to get right?

Answers

Answer:

48 questions

Step-by-step explanation:

There are 60 questions on the test

to see how many questions he needs to solve to get 80% we multiply 60 with 80 and divide it by 100

60 x 80 ÷ 100 = 48

Stu invested $700 in a Cd. if the CD grows at a rate of %6 per year compounded annually, when will he double his money ?

Answers

Answer:16.66 repeating years

Step-by-step explanation: take 6% of 700 the divide 700 by that number to get how many years until he doubles his money then check by multpling 42 * 16.66 repeating


Help this is due in 2 minutes

Answers

Answer:

The value of the machinery after 5 years is $236.20

Step-by-step explanation:

Generally, we have the depreciation exponential expression as;

V(t) = I (1 - r)^t

V(t) is the value of the machinery at a point in time

I is the initial value or the cost of the machinery when bought which is $400

r is the rate of decrease which is 10% and is same as 10/100 = 0.1

t is the time which is 5 years

Substituting these values;

V(5) = 400( 1 - 0.1)^5

V(5) = 236.196

to the nearest vent, this is $236.20

Mrs. Morales wrote a test with 15 questions covering spelling and Y vocabulary. Spelling questions (x) are worth 5 points and vocabulary questions (y) are worth 10 points. The maximum number of points possible on the test is 100. ​

Answers

15=5x+10y should be the answer or 100 to replace the 15 also it can be rearranged in a different way

Which point on the number line best represents the location of 78?

F Point M
G Point N
H Point P
J Point O

Answers

Answer: F
because if you simplify 78 it’ll give you about 8.831...

7. Adrienne and her brother John each inherit $7,000 that they use to open savings accounts with
Adrienne's account earns 4.7% annual compound interest and John's account earns 4.7% annual
simple interest. Neither makes any additional deposits or withdrawals for 10 years.
a. Who's account will be worth more at the end of 10 years?
b. How much more will the account be worth?

Answers

Answer:

234

Step-by-step explanation:

s=23

Directions: Solve for x.

Answers

Answer:

x = 6

Step-by-step explanation:

From the given picture,

ΔABC and ΔADE are the similar triangles.

By the property of similar triangles,

Corresponding sides of the similar triangles are proportional.

[tex]\frac{AB}{AD}=\frac{AC}{AE}[/tex]

[tex]\frac{x+18}{x}=\frac{28}{(28-21)}[/tex]

7(x + 18) = 28x

7x + 7×18 = 28x

28x - 7x = 126

21x = 126

x = [tex]\frac{126}{21}[/tex]

x = 6

What geometric figure would you get if you joined the endpoints of two rays and pointed the rats in opposite directions?

Pls help me ASAP, this is due today. I would really appreciate it.

Answers

A line? They’ll look like this right? <—••—> ?

PLEASEPLEASE ANSWER

and if i get any more bots answering with links im gonna cry ive put this question 5 times

Answers

Answer:

x = 7

Step-by-step explanation:

A triangle's total interior angle measurement will equal 180°.

Set all measurements equal to 180:

(82) + (9x - 6) + (6x - 1) = 180

Simplify. Combine like terms:

(82 - 6 - 1) + (9x + 6x) = 180

(82 - 7) + (15x) = 180

(75) + 15x = 180

Next, isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation, and stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

~

First, Subtract 75 from both sides of the equation:

15x + 75 = 180

15x + 75 (-75) = 180 (-75)

15x = 180 - 75

15x = 105

Next, divide 15 from both sides of the equation:

(15x)/15 = (105)/15

x = 105/15

x = 7

7 is your value for x.

~

y = -3/2x -2 y = -1/4 + 3

Answers

Answer:

umm. what am I supposed to find

Step-by-step explanation:

I need to know what to fi d in order to get the answer for you it would make it easier if you did that now so yeah

Please help will mark brainliest

Answers

4, 16
-1, 1
3, 9
12, 144
16, 256

The rule is y=x^2. If you square all the numbers on the x side, you will get the numbers on the y side. 4 times 4 = 16. -1 times -1 =1. 3 times 3 =9, and so on.

Are these similar and what is the reason?

Answers

Answer:

yes

Step-by-step explanation:

Answer:

Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion . In other words, similar triangles are the same shape, but not necessarily the same size.

The triangles are congruent if, in addition to this, their corresponding sides are of equal length.

Step-by-step explanation:

so I will that they are similar

Notebook costs $5,write an expression to show how much (n) notebook costs.

Answers

To find the total cost you would multiply the cost of a notebook by the number of notebooks purchased:

Total = 5n

Justin and Austin decide to play catch after school. They start at the same point.
Justin walks 40 feet north and 10 feet west. Austin walks 30 feet south and 20 feet east. How far apart are
they? (Round to the nearest tenth).
A) 76.2 ft
B) 14.1 ft
C) 70.7 ft
D) 31.6 f

Answers

i think it’s A


a^^^^

Tell whether the angles are complementary or supplementary. Then find the value of $x$ . A ray intersects two other rays forming a right angle. The angles formed after the intersection is x degrees and left parenthesis x minus 20 right parenthesis degrees.

Answers

The measure of the value of x is 55°.

We have,

Complementary angles are two angles that add up to 90 degrees.

Supplementary angles are two angles that add up to 180 degrees.

Now,

The ray intersects two other rays forming a right angle.

This means,

It is a complementary angle.

i.e

x + (x - 20) = 90

x + x - 20 = 90

2x = 90 + 20

2x = 110

x = 55°

Thus,

The measure of the value of x is 55°.

Learn mroe about complementary angles here:

https://brainly.com/question/15380971

#SPJ12

Susana has four identical square gems. She wants to arrange them to form a larger quadrilateral with four right angles and two pairs of parallel sides. Susana’s assistant says that the quadrilateral must be a square, as shown. Do you agree? If so, explain your reasoning. If not, draw a quadrilateral to support your answer.

Answers

Answer: i agree u are right it makes sence

Step-by-step explanation:

Answer: I do not agree

Step-by-step explanation: The picture below meets all the requirements, four right angles, and two parallel  lines

Whoever helps me will be lucky for the rest of your life

Answers

Answer:

A) 3.5

16 shovels full

Step-by-step explanation:

9x + 13 = 17x - 15

8x = 28

x = 3.5

20 + 5x = 32 + 4.25x

0.75x = 12

x = 16

What is the rate of change between (-32,0) and (-31,2)

Answers

2-0/ -31 - -32
= 2-0/ -31 + 32
= 2/1
= 2

Find the area of the shaded region. Round your answer to the nearest tenth.
5 in.

Answers

Answer:

10 is the number

Step-by-step explanation:

Please someone help me... I have my state test tomorrow and I don't know how to do this.

Answers

Answer: 3.8

Step-by-step explanation:

First, solve 9.30 x 10^7 to find the length of an astronomical unit.

10^7 = 10000000

9.30x10000000=93000000 miles

next, solve for the distances the sun is from Jupiter and Mars,

10^8 = 100000000

1.42x100000000=142000000 miles

4.84x100000000=484000000 miles

next, subtract the distances

484000000-142000000=342000000 miles

then, divide the sum by 93000000 to find the amount in astronomical units.

342000000/93000000=3.677419

finally, round to the nearest hundred

3.68

Find the area of the given shape

Answers

Answer:

Step-by-step explanation:

15 * 9=135

135 + 37.5 = 172.5

What value of b will make the equation a true statement? Explain how you arrived at your solution. (−34 + 43)+ b = 0

Answers

Answer:

b = -9

Step-by-step explanation:

Given the equation (−34 + 43)+ b = 0

We are to find the value of b

First solve for the value in parenthesis

(−34 + 43)+ b = 0

9+b = 0

Subtract 9  from both sides

9+b-9 = 0 - 9

b+0 = -9

b = -9

Hence the value of b will make the equation a true statement is -9

Rewrite the following without an exponent. (9/5^-2)​

Answers

Answer:

225

Step-by-step explanation:

5^-2 can be rewritten as 1/25.

Then we can divide 1/25 by 9. 9/(1/25)= 225

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