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Verizon [17]
3 years ago
12

Evaluate-2x3 - 2x2 - 4x-2 for x=-2. A.-18 B. 16 C. -2 D. 14

Mathematics
1 answer:
dmitriy555 [2]3 years ago
4 0

Answer:

14

Step-by-step explanation:

-2x^3 - 2x^2 - 4x-2

Let x = -2

-2 (-2)^3 - 2 (-2)^2 -4(-2) -2

Exponents first

-2 (-8) -2 (4) -4(-2) -2

Then multiply

16 -8 +8 -2

Then add and subtract

14

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It costs $2.80 to make a sandwich at the local deli shop. To make a profit, the deli sells it at a price that is 170% of the cos
Svetlanka [38]

Answer:

Sandwich sells for  $4.76  .

Step-by-step explanation:

As given

It costs $2.80 to make a sandwich at the local deli shop.

To make a profit, the deli sells it at a price that is 170% of the cost.

170% is written in the decimal form

= \frac{170}{100}

= 1.7

Thus

Sandwich selling cost = 1.7 × Cost of making

Put all the values in the above

Sandwich selling cost = 1.7 × $ 2.80

                                    = $4.76

Therefore the Sandwich sells for  $4.76  .

7 0
3 years ago
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How is multiplication using partial products different from multiplication using regrouping?
klio [65]
Partial products is breaking down every number in multiplication and adding them. Regrouping is grouping number them adding them.They are alike because they both involve breaking down the numbers and adding them.  They are different because one is taking all the numbers broken down, while the other is just a couple of the number.
5 0
3 years ago
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Francisco makes $11 per hour doing part time work on Saturdays. He spends $3 on transportation to and from work. The equation y
ludmilkaskok [199]

Answer:

x=4

Step-by-step explanation:

3 0
3 years ago
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Write the equation of the graphs which have m=2, c = 1
jonny [76]

Answer:

y = 2x + 1

Step-by-step explanation:

formula for equation of graph:

y = mx + c

substitute m = 2 and c = 1 into the equation

y = 2x + 1

3 0
3 years ago
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If the area of a rectangle is 144 sq. in. and the length of one side is 18in. what is the length of the other side?
navik [9.2K]

Hello from MrBillDoesMath!

Answer:  The other side has a length of 8

Discussion:

Area of a rectangle = l * w ( length times width). In our case

Area = 144 = l * w = 18 * w =>

18 w = 144  =>

w = 144/18 = 8


Thank you,

MrB

8 0
3 years ago
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