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dolphi86 [110]
3 years ago
13

Evaluate A 2-B2 for A = 3 and B = -4.​

Mathematics
1 answer:
Zigmanuir [339]3 years ago
6 0
Plug in numbers
=3(2)- -4(2)
=6+8
=14
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Help me plz I don't know the choices it could be
Marizza181 [45]

Answer:   544 cm²

<u>Step-by-step explanation:</u>

There are 5 sections to the tent:

  1. Front (triangle):  A = \frac{1}{2} · b · h
  2. Back (triangle): same dimensions as Front
  3. Base (rectangle): A = L · w
  4. Left Side (Rectangle): A = L · w
  5. Right side (rectangle): same dimensions as Left Side

Total Surface Area = Front & Back  +   Base  +  Sides

                                =  2[\frac{1}{2}(12 · 8)]     +  (12 · 14) + 2(14 · 10)

                                =        96            +     168    +  280

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7 0
3 years ago
1/3(x + 4) - 6 = 2/3(5 - x)
FinnZ [79.3K]

Answer:

x=8

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A company buys computers and printers. Each computer costs $550 and each printer costs $390. If the company spends $8160 and buy
maxonik [38]

Answer:the company bought 12 computers and 4 printers.

Step-by-step explanation:

Let x represent the number of computers that the company bought.

Let y represent the number of printers that the company bought.

The company buys a total of 16 machines. It means that

x + y = 16

Each computer costs $550 and each printer costs $390. If the company spends $8160 for all the computers and printers that was bought, it means that

550x + 390y = 8160 - - - - - - - - - - 1

Substituting x = 16 - y into equation 1, it becomes

550(16 - y) + 390y = 8160

8800 - 550y + 390y = 8160

- 550y + 390y = 8160 - 8800

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y = - 640/ - 160

y = 4

Substituting y = 4 into x = 16 - y, it becomes

x = 16 - 4

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6 0
3 years ago
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Bas_tet [7]

In the problem given:

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The term are single mathematical expressions that separate values.

In the expression, there is a + and -; these concludes 2 terms.

There are 3 coefficients next to each variable.

The coefficients are 15x, -9y, and 2z.

That means there are 3 coefficients.

Cheers

- ROR

6 0
2 years ago
Read 2 more answers
Find the slope and Y-intercept for each table, and then write an equation.
Leni [432]

Answer:

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d. Slope = -2; y-intercept = 1

Step-by-step explanation:

I Hope That This Helps! :)

8 0
3 years ago
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