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vaieri [72.5K]
3 years ago
15

What is the value of the expression 3x+4 when x=7?

Mathematics
2 answers:
Pani-rosa [81]3 years ago
7 0

Answer: 25

Step-by-step explanation: 7x3 = 21+4 =25

Hope this helped!

Mark Brainliest if you want!

lara31 [8.8K]3 years ago
7 0

Answer:

25

Step-by-step explanation:

3x +4

3×7+4

21 +4

25

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dmitriy555 [2]
(-3,7)

5(-3)+2(7)=-1

-15+14=-1
4 0
3 years ago
Consider the equation below.
vaieri [72.5K]

Hello there

-y+2= -12(8y+8)

-y+2= -96y+96

-y+96y=96-2

95y=94

y=94/95

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6 0
3 years ago
A display case in the shape of a rectangular pyramid has a base that is 1234 inches by 9 inches. It is 8 inches tall. What is th
Jlenok [28]

Answer:

864 cubic inches

Step-by-step explanation:

Complete Question

A display case in the shape of a rectangular pyramid has a base that is 12 inches by 9 inches. It is 8 inches tall. What is the volume of the display case?

The volume of a rectangular pyramid =

Area of the base × Height of the pyramid

Base has dimensions = 12 inches by 9 inches.

Area of the base = 108 square inches

Height of the pyramid = 8 inches

Volume of rectangular pyramid =

Area of the base × Height of pyramid

= 108 square inches × 8 inches

= 864 cubic inches

Therefore, the volume of the display case is 864 cubic inches

3 0
3 years ago
Solve 4(-2x + 7) = 24 for x
tamaranim1 [39]

Answer:

x = 1/2

Step-by-step explanation:

brainlest please

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    4*(-2*x+7)-(24)=0

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 4 • (7 - 2x) -  24  = 0

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

  4 - 8x  =   -4 • (2x - 1)

Equation at the end of step  3  :

 -4 • (2x - 1)  = 0

Step  4  :

Equations which are never true :

4.1      Solve :    -4   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

4.2      Solve  :    2x-1 = 0

Add  1  to both sides of the equation :

                     2x = 1

Divide both sides of the equation by 2:

                    x = 1/2

6 0
3 years ago
Read 2 more answers
What is 1/9 x 4/5? please help
Anni [7]

Answer:

4/45

Step-by-step explanation:

Multiply the top by the top, and the bottom by the bottom:

\frac{1}{9} * \frac{4}{5} = \frac{4}{45}

4/45 cannot be reduced down anymore, therefore that is your answer.

<em>Hope this helps!!</em>

<em>- Kay :)</em>

8 0
3 years ago
Read 2 more answers
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