Mathematics High School

a) If f(x) = 3x - 2, find f(x)
b) Find f(13)

Answers

Answer 1
3x-2(13) then 39x-26 equals 13
Answer 2
f(13) = 3(13) - 2
f(13) = 39 - 2
f(13) = 37

Related Questions

select all relations that are functions from the choices below.

Answers

The correct answer is A

What is the slope-intercept form of the equation of the line that passes through the points (9, 5) and (4, 1)?

Answers

Answer:

y=4/5x+-11/5

Step-by-step explanation:

might no be but im sleepy so

Answer:

y=4/5x−11/5

Step-by-step explanation:

Just took the test

137 divided by 3,562 pls help meeeee

Answers

Answer:

26

Step-by-step explanation:

Answer:

0.039 but u might wanna put the other way around which is 26

x to the 2nd power minus 6 equals 1

Answers

Answer:

2.646

Step-by-step explanation:

You have to 6 to the 1 and then take the square root of the number which is seven leaving you with 2.646

Answer:

x = ±√7

Step-by-step explanation:

Symbolically, we have x^2 - 6 = 1,  and so x^2 = 7, so that x = ±√7

WILL GIVE BRAINLIEST PLZZZZ HELP

Answers

Answer: y= 8295

Step-by-step explanation:

someone help its due

Answers

Answer:

15

Step-by-step explanation:

PQR = 150.

RPQ = PRQ

RPQ + PRQ = 30

RPQ = 15

15 is the answer, if it’s wrong im not sure what else it’d be

Need help with questions and will give brainest to good answers. Bad answers or jokes will be reported thanksssssss

Answers

Answer:

3, 10, -2/3

Step-by-step explanation:

I don't speak spanish, so I hope i did this right.

Problem 1

set equal to each other

2x+1=x+4

-4         -4

2x-3=x

-2x     -2x

-3=-x

times -1 to get a positive x

3=x

Problem 2

repeat steps

4x-5=3x+5

+5            +5

4x=3x+10

-3x    -3x

x=10

Problem 3

repeat steps

x=4x+2

-4x  -4x

-3x=2

divide

x=- 2/3

to find the y's, go back and plug in

Prob 1: y=(3+4) =7

Prob 2: y=[3(10)+5] =35

Prob 3: y=(-2/3) =-2/3

Answer:

1.)

y = 2x + 1

y = x + 4

Substitute

2x + 1 = x + 4

Subtract 1 on both sides

2x + 1 - 1 = x + 4 - 1

2x = x + 3

Subtract x on both sides

2x - x = x - x + 3

x = 3

Now that we have x we can use that for finding y

y = x + 4

y = 3 + 4

y = 7

x = 3

y = 4

( 3, 4 )

__________________________________________________________

2.)

y = 4x - 5

y = 3x + 5

Substitute

4x - 5 = 3x + 5

Add 5 on both sides

4x - 5 + 5 = 3x + 5 + 5

4x = 3x + 10

Subtract 3x on both sides

4x - 3x = 3x - 3x + 10

x = 10

Now that we have x, we can use that to find y

y = 3x + 5

y = 3 (10) + 5

y = 30 + 5

y = 35

x = 10

y = 35

( 10, 35)

__________________________________________________________

3.)

y = x

y = 4x + 2

Substitute

x = 4x + 2

Subtract 4x on both sides

x - 4x = 4x - 4x + 2

-3x = 2

Divide -3 on both sides to isolate the variable

-3x/-3 = 2/-3

x = -2/3

Now that we have that we can use it to find y

y = x

y = -2/3

x = -2/3

y = -2/3

( -2/3, -2/3)

Hope this helped!

Have a supercalifragilisticexpialidocious day!

What is the slope of the line (-4,-1) (1,4)

Answers

Answer:

1

Step-by-step explanation:

Answer:

ok

Step-by-step explanation:

yes what do you need help with

22
Clara has five cards.
There is a number on each card.
Two of the numbers are hidden.
(2 points)
The mode of the five numbers is 3. The mean of the five numbers is 5
Work out the two numbers that are hidden
3
?
8
5
?


Answers

Answer:

13 and 7

Step-by-step explanation:

If 150 miles is 25% of a race, what is the length of the entire race?
3,750 miles
600 miles
37.5 miles
6 miles

Answers

Answer:

600 miles

Step-by-step explanation:

150x4=600

How much is 2000mg in grams?

Answers

Answer:

2 grams

Step-by-step explanation:

It’s 2 grams ...............

The volume of a cylinder is 1767 cm and its height is 11 cm.
What is the length of the cylinder's radius?
Enter your answer in the box.

Answers

Answer:

1778 cm

Step-by-step explanation:

solve for x using the correct order operations
12- (3 times 2)^2 + 4 times 3 = x
A x = -60
B x = -12
C x= 48
D x = 12
please help i will give brainliest :))

Answers

Answer:

B: x = -12

Step-by-step explanation:

12 - (3 × 2)^2 + 4 × 3

Use PEMDAS, meaning solve what's in the parentheses first (P stands for parentheses)

12 - (6)^2 + 4 × 3

We get 6 because 3 × 2 = 6

Next step is solve any exponents (E for exponents)

12 - 36 + 4 × 3

We get 36 because 6 × 6 = 36 (the exponent was 2 meaning multiply the same number, 6, twice: 6 × 6)

Now we move on to multiplication and division (M for multiplication and D for division)

These are interchangable in that either can go first depending on its location in the equation

However, since there is no division in this problem we automatically skip to multiplication

12 - 36 + 12

We answered 12 because 4 × 3 = 12

Our last steps in PEMDAS are addition and subtraction (A for addition and S for subtraction)

These are also interchangable, but both are apparent in this problem

Now it depends on location

Whichever sign (addition or subtraction) is first in accordance from left to right is where we start first)

Subtraction is first

-24 + 12

Now we add -24 + 12

-12

PLEASR HELP ASAP!!!!!!! i’ll mark brainlest

Answers

This should help ^-^
B: (1/2) exponent 5

That’s the answer I think

Find the missing length

I WILL GIVE BRAINLIEST

Answers

Answer: 30

Step-by-step explanation: Assuming that the side lengths correspond with one another you can set up a ratio to solve

It should look something like this:   15/25 = 18/x

With this equation set up you can solve by cross multiplying. 25(18)=15x

Then start sloving:

25(18)=15x

450=15x

450/15=15x/15    (divide both sides by 15)

30=x

               

Solve for y.
6y = 192

A. y = -32

B. y = -18

C. y = 18

D. y = 32

Answers

y=D because you do 192 divided by 6 to get 32

Answer:

D. y=32

Step-by-step explanation:

multiply. (x^2-5x+2)(3x^2+2x+3)

Answers

Answer:

3x^4-13x^3-x^2-11x+6

Step-by-step explanation:

Checked this on a website for you btw!

Answer:

3x^4-13x^3-x^2-11x+6

Step-by-step explanation:

A pump moves 70 gallons of water
per minute. How long will it take the
pump to empty a 2,030-gallon tank?

Answers

It will take 29 minutes to empty a 2,030- Gallon Tank.
70 x 1 = 70 Gallons per minute
2,030/70 = 29 minutes

The granola Summer buys used to cost $6.00 per pound, but it has been marked up 15%. Suppose Summer buys 3.5 pounds of granola. How much more does it cost at the new price than at the old price?

Answers

New price = 24.15
Old price = 21

Answer:

the answer would be 3.15

Step-by-step explanation:

Twice the difference of 1 and a number.

Answers

2(1-n) where n=a number

state if polygons are similar

Answers

Answer:

B

Step-by-step explanation:

Round the number above to the place where the 3 is located. 5,684.937

Answers

Answer:

5684.940

there is your answer

7. Customers must spend a minimum of $25 at an
online store to receive free shipping. A customer
ordered 10 tubes of paint and an easel.
- Each tube of paint costs the same amount
- The easel costs $15

possible costs, in dollars, of one tube of paint if the
customer receives free shipping?

Answers

Answer:

$1

Step-by-step explanation:

$1×10(the tubes of paint)=$10+$15(the easel)=$25

I agree with the other commenter

A biology class examined some flowers in a local meadow. The students saw 88 perennial
flowers and 12 annual flowers. What percentage of the flowers were perennials?

Answers

Answer:

88%

Step-by-step explanation:

6 Which expression below has a coefficient of 3?
A. 5x + 9
B. 2x-3
C. 28? + 3x – 6
gx+4
( IS IT A. B. C. or D.?)

Answers

option c is the correct cofficient of 3

Option c is the correct answer choice

A saving account earns 4.5 simple interest per year. If 650.00 is deposited and no withdrawals or deposits are made during one year how much interest will be earned after one year

Answers

Answer:

29.25 Interest

Step-by-step explanation:

Take the formula: I=PRT

The principal is 650.00, 4.5 is the rate, 1 year is the time, We do not know the interest.

Change the rate, 4.5 to 0.045 to help solve the problem.

Times 650.00, 0.045, and 1 together.

You will get 29.25, Which is the answer!

Booyah! You are done.

Hope this helps!

Use the description below for Exercises. A rectangle has a length of 12 inches and a perimeter of 42 inches.

The rectangle is dilated using a scale of 4. Find the perimeter and the area of the dilated rectangle.

Answers

Answer:108

Step-by-step explanation:

12+12+42+42

The perimeter of a rectangle is 48 cm. The length is 3 times as long as the width.
What is the width of the rectangle?
A. 4cm B.6cm C.8cm D.12.cm

Answers

The correct answer is c

please help. I need the answer to the question circled in red. thanks!!​

Answers

Answer:

35 units

Step-by-step explanation:

35 units I’m pretty sure

Help me with this problem?

Answers

The answer is 28
You are smart believe in your self god loves you
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