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Genrish500 [490]
2 years ago
12

What is the value of (7-12)(-8-22)

Mathematics
2 answers:
stira [4]2 years ago
8 0

Answer:

150

Step-by-step explanation:

Use the process PEMDAS for this problem.

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

For this problem first do the problem inside the parenthesis:

7-12 = -5

-8-22 = -30

Now that we have solved the problem inside the parenthesis, now multiply.

(-5) times (-30) = 150

If you multiply two negatives together, they make a positive.

Hope this helps, have a great day! :)

Fed [463]2 years ago
7 0

Answer:

The Answer to this problem is 150

Step-by-step explanation:

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Enter an algebraic expression to model the given context. Give your answer in simplest form. The original price p of an item les
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Answer:

Step-by-step explanation:

Let

Original price = p

Less Discount = 20%

Total discount paid for the item = 20% of p

= 20/100 * p

= 0.2 * p

= 0.2p

Actual price after discount = 100% - 20%

= 80%

Total price paid for the item = 80% of p

= 80/100 * p

= 0.8 * p

= 0.8p

6 0
3 years ago
If a board game was originally $25 and it is on sale for $18 what is the percent of discount?
oksano4ka [1.4K]
It was a 28 percent discount
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A study examined the alertness benefits of higher caffeine intake. In the study, the researchers investigated the link between d
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3 0
3 years ago
You are designing a rectangular garden. the garden will be enclosed by fencing on three sides and by a house on the fourth side.
RUDIKE [14]
Suppose the dimensions of the rectangle is x by y and let the side enclosed by a house be one of the sides measuring x, then the sides that is to be enclosed are two sides measuring y and one side measuring x.

Thus, the length of fencing needed is given by

P = x + 2y

The area of the rectangle is given by xy,

i.e.

xy = 288  \\  \\  \\  \\ \Rightarrow y= \frac{288}{x}

Substituting for y into the equation for the length of fencing needed, we have

P=x+2\left( \frac{288}{x} \right)=x+ \frac{576}{x}

For the amount of fencing to be minimum, then

\frac{dP}{dx} =0 \\  \\ \Rightarrow1- \frac{576}{x^2} =0 \\  \\ \Rightarrow \frac{576}{x^2} =1 \\  \\ \Rightarrow x^2=576 \\  \\ \Rightarrow x=\sqrt{576}=24

Now, recall that

y= \frac{288}{x} = \frac{288}{24} =12

Thus, the length of fencing needed is given by

P = x + 2y = 24 + 2(12) = 24 + 24 = 48.

Therefore, 48 feets of fencing is needed to enclose the garden.
8 0
3 years ago
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Answer: c

Step-by-step explanation:

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