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2 years ago

Describe a real world situation for the equation +4+(-4=0

1 answer:

6 0

You could use the equation
+4+(-4)=0 if:

-you earn $4 and spend it

-buying 4 candy bars then eating them

-earning 4 points then losing them

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I don’t know what to do calculate the surface area for the figure

Veronika [31]

Answer:

it is 40!

Step-by-step explanation:

well since area is l x w 13+10=23

and 12+5= 17

5 0

2 years ago

Evaluate the expression 5k2 - 7k when k = 3

VikaD [51]

Answer:

Step-by-step explanation:

In this question, you have to solve by plugging in the value to the "k" variable and solve.

Solve:

5(3)^2 - 7(3)

3^2 = 9

5(9) - 7(3)

45 - 7(3)

45 - 21 = 24

Your final answer would be 24.

4 0

2 years ago

Read 2 more answers

What is the simplest ratio of 32 and 48

Elden [556K]

2:3
Keep diving each number by 2.

4 0

3 years ago

Read 2 more answers

Please select the best answer from the choices provided

Ira Lisetskai [31]

<u>Answer:</u>

The correct answer option is c. $\frac{1}{9a^2}$ .

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

We are given an expression $(27a^{-3})^{-\frac{2}{3} }$ and we are supposed to simplify it.

We can also write $(27a^{-3})^{-\frac{2}{3} }$ as $(\frac{3^3}{a^3} )^{-\frac{2}{3} }$ .

We know the power rule (a^m)^n=a^{mn} which means that to raise a power to a power you need to multiply the exponents.

So multiplying the exponents to get:

$\frac{3^{(3.-\frac{2}{3})} }{a^{(3.\frac{2}{3})} }\\\\\frac{3^{-2}}{a^2}\\ \\\frac{1}{3^2a^2} \\\\\frac{1}{9a^2}$

Therefore, the correct answer option is c. $\frac{1}{9a^2}$ .

4 0

2 years ago

Please help me with an addition formula problem!

andrew-mc [135]

2a + 3b = 6
5a + 2b = 4

We multiply the first equation by 5 and the second by 2 and and subtract the second from the first:

10a + 15b = 30
-10a -4b = -8

11b = 22
b = 2

2a + 3(2) = 6
2a = 0
a = 0

Checking,
5(0) + 2(2) = 4
4 = 4, true

6 0

3 years ago