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4 years ago

9x+7 when x+3 and x4 when x =3 pls do step by step

Mathematics

2 answers:

Anastaziya [24]4 years ago

6 0

Answer:

x=1

Step-by-step explanation: 9x+7=16

Subtract 7 from both sides.

9x=16−7

Subtract 7 from 16 to get 9.

9x=9

Divide both sides by 9.

Divide 9 by 9 to get 1.

x=1

sergiy2304 [10]4 years ago

3 0

Answer:

Step-by-step explanation:

9x+7 when x=3

Plug 3 into the equation for the variable x

So, it would be 9(3)+7

Multiply 9×3 together to get 27

Finally, add 27 and 7 together

The answer should be 34

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3 years ago

What is the circumference of circle P?<br> Express your answer in terms of .<br> AB = 14 in.

MA_775_DIABLO [31]

Answer:

$C=14\pi\ in$

Step-by-step explanation:

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3 years ago

Read 2 more answers

A group of friends went to lunch, and their bill was $132.50. An 18% gratuity was added to the bill. What was the total amount o

Serggg [28]

Answer:

$156.35

Step-by-step explanation:

we know that

A group of friends went to lunch, and their bill was $132.50

In this problem

$132.50 represent the 100%

100%+18%=118%

using proportion

Find out the total amount that represent 118%

Let

x ----> the total amount of the bill

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3 years ago

Please solve both of these with how you solved them.

Paladinen [302]

Answer:

a. (2,5)

b. (14,15.5)

Step-by-step explanation:

y=4x-3

y=-2x+9

Set both equations equal to each other to solve for x.

4x-3=-2x+9

6x=12

x=2

Plug in x to solve for y.

y=4x-3

y=4(2)-3

y=8-3

y=5

(2,5)

y=(5/4x)-2

y=(-1/4x)+19

Set both equations equal to each other to solve for x.

(5/4x)-2=(-1/4x)+19

4((5/4x)-2=(-1/4x)+19)

5x-8=-x+76

6x=84

x=14

Plug in x to solve for y.

y=(5/4x)-2

y=(5/4(14))-2

y=17.5-2

y=15.5

(14,15.5)

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3 years ago

Find the value of x in the triangle.

Vinvika [58]

$= > 3x + 15 + 4x + 12 = 180 \\ = > 7x + 27 = 180 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ = > \: 7x = 180 - 27 = 153 \: \: \: \: \\ x = \frac{153}{7} = 21 \\ x = 21$

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3 years ago