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2 years ago

Pleas help me (and pls don't ban my question this time Brainly)

Mathematics

2 answers:

Nikitich [7]2 years ago

7 0

Answer:

-16.8

Step-by-step explanation:

The equation can be solved by performing the inverse of the operation that is done to the variable. Here, 12 is added to the variable. The inverse of that operation is addition of the "additive inverse", or "opposite" of 12:

12 + d = -4.8 . . . . . . given equation

12 -12 +d = -4.8 -12 . . . . . the same operation is done to both sides

d = -16.8

The value of d that makes the equation true is -16.8.

_____

The addition (subtraction) property of equality tells you that adding (subtracting) the same number from both sides of an equation will not change the value of the variable.

Evgesh-ka [11]2 years ago

5 0

Answer:

d = 7.2

Step-by-step explanation:

12 + d = -4.8

subtract 12 from both sides and you get

d = 7.2

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What is 6n-10=8 show me how to do this problem

Lady bird [3.3K]

Answer: n=3

Step-by-step explanation:

6n-10=8

6n=18

n=3

You start by adding 10 to both sides and then divide both sides by 6.

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2 years ago

Which expression is equivalent to the following complex fraction?

jeka57 [31]

$\dfrac{\frac{1}{x}-\frac{1}{y}}{\frac{1}{x}+\frac{1}{y}}=\dfrac{\frac{y}{xy}-\frac{x}{xy}}{\frac{y}{xy}+\frac{x}{xy}}=\dfrac{\frac{y-x}{xy}}{\frac{y+x}{xy}}=\dfrac{(y-x)xy}{(y+x)xy}=\dfrac{y-x}{y+x}$

Answer D.

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3 years ago

1) ? x (-9) = -36

diamong [38]

Answer:

1. 4

2. 4

3.7

4.-2

5.-8

6. -5

7.5

8.24

3 0

3 years ago

Read 2 more answers

What is the estimate of 979

saw5 [17]

I'm pretty sure that it would be 1,000...

4 0

3 years ago

PLZ HELP ANSWER AND EXPLAIN. (photo) #8

evablogger [386]

The picture shown is a unfolded rectangular prism.

The formula to find the surface area of a rectangular prism is:

A = 2(WL+HL+HW)

(W = width, L = Length, H= Height)

So we would need to determine the Height, Length, and Width first, and then plug them into the formula and solve for the area.

In this case:
The height is: 4 cm
The length is: 10.5 cm
The width is: 6.4 cm

Now that we have determined the height, length, and width, we simply plug them into the formula I showed earlier.

In this case the answer would be 269.6.

D. 269.6

8 0

2 years ago