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Mazyrski [523]
4 years ago
7

Evaluate (3x + 8) – (2x + 7) when x = 3 18 11 1 4

Mathematics
1 answer:
kherson [118]4 years ago
3 0

Answer:

4

Step-by-step explanation:

Step 1: Write out expression

(3x + 8) - (2x + 7)

Step 2: Distribute negative

3x + 8 - 2x - 7

Step 3: Combine like terms

x + 1

Step 4: Substitute

3 + 1 = 4

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The sum of a number p and 7 is divided by 12. the result is 3. what is the number?
Eduardwww [97]

Answer:

4

Step-by-step explanation:

5 0
4 years ago
What is the surface area of the prism in square feet?
Evgesh-ka [11]

Answer:

The surface area of the rectangular prism is 52 square feet (ft²), if the height is 4 feet, width is 3 feet and depth is 2 feet.

Step-by-step explanation:

          The given is,

                    A  prism of

                     Let, h - height of the prism

                            w - Width of the prism

                            d - Depth of the prism

Step:1

        From given,

                     h = 4 feet

                     w = 3 feet

                     d = 2 feet

Step:2

        Formula to calculate the surface area of the rectangular prism is,

         A=2(wd+hd+hw)             

       Substitute the values of w,d and h

                           = 2 [(3×2) + (4×2) + (4×3)]

                           = 2 (6+8+12)

                           = 2 × 26

                           = 52

                       A = 52 Square feet

Result:

        Thus the surface area of the rectangular prism is 52 square feet (ft²), if the height is 4 feet, width is 3 feet and depth is 2 feet.

6 0
3 years ago
Solve for x in equation <br> x-c/2=d
lana66690 [7]
X-c/2 = d
Multiply by 2 on both sides. Leaves us with:
x-c = 2d
Add 2 to both sides. Leaves us with:
x = 2d + c
Unless you have values to substitute into the variables, this is your answer:
x = 2d + c
4 0
4 years ago
Someone solve this for me please
ra1l [238]

Answer:

x=-1, x=3 e x=2i, x=-2i

Step-by-step explanation:

Solve for x over the real numbers:

x^4 - 2 x^3 + x^2 - 8 x - 12 = 0

The left hand side factors into a product with three terms:

(x - 3) (x + 1) (x^2 + 4) = 0

Split into three equations:

x - 3 = 0 or x + 1 = 0 or x^2 + 4 = 0

Add 3 to both sides:

x = 3 or x + 1 = 0 or x^2 + 4 = 0

Subtract 1 from both sides:

x = 3 or x = -1 or x^2 + 4 = 0

Subtract 4 from both sides:

x = 3 or x = -1 or x^2 = -4

x^2 = -4 has no solution since for all x on the real line, x^2 >=0 and -4<0:

Answer: |

| x = 3 or x = -1

6 0
3 years ago
Z=6x-y solve for x i need this for aleks
postnew [5]

Answer:

(z+y)/6=x

Step-by-step explanation:

Solve for x: z=6x-y

Add y on both sides: z+y=6x

Divide by 6 on both sides (z+y)/6=x

Hope this helps plz mark brainliest if correct :D

8 0
3 years ago
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