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laila [671]
3 years ago
14

Simplify the Expression : -20 - (-5) * (-2^2)

Mathematics
1 answer:
dusya [7]3 years ago
4 0

Answer:

-40

Step-by-step explanation:

-20-(-5)*(-2^2)

- and a - = positive

-2^2 = -4 but if it was (-2)^2 then it would be 4

-20+5*(-4)

order of operations

-20-20

-40

hope this helps

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The sum of a number squared and five
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Answer:

(x+5^3 is the answer of this question

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3 years ago
Mr suresh had 7/9 kg of sugar. He used 1/3 of it. How much sugar did he use?​
BabaBlast [244]

1/3 * 7/9 kg = (1 * 7)/(3 * 9) kg = 7/27 kg

He used 7/27 kg of sugar.

3 0
3 years ago
Tom is making a rectangular garden. he decides to make the garden 30 ft long by 15 ft wide. Later, tom decides to keep the lengt
OleMash [197]

Yes.  Changing the the word problem into a function, you get 30x=y.

30 = Fixed Length

x = width

y = area

No matter what width (x) you choose, the area (y) is going to be a multiple of 30 (the fixed length) because with two numbers being multiplied, if there is a fixed number that will always be the multiple and not the multiplier.  For example, 10 multiplied by every number 1-10 is going to be a multiple of 10.

10x1=10, 10x2=20, 10x3=30, etc

So if Tom chooses any of these widths (x) 5, 10, or 15, y (the area) will be a multiple of 30.

30(5)=150

30(10)=300

30(15)=450

So as we double 5 to get 10, our outcome is doubled 150 to 300 and so forth.  Hope this helps.

7 0
4 years ago
Matt wants to purchase a gasoline motor scooter. The gas mileage 75 miles for each 1/2 gallon of gasoline. How many miles will M
Paraphin [41]

Answer: 750 miles

Step-by-step explanation:

The gas mileage is 75 miles per 1/2 gallon of gasoline.

First find how many miles it can go on 1 gallon of gasoline:

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4 0
3 years ago
How do you write 23.6 in scientific notation?
crimeas [40]
The first factor must be at least 1 and less than 10.
The second factor must be a power of 10.

Move the decimal point to the left until the number is between 1 and 10. Count how many places you move the decimal point.23.6 → 2.36

You moved the decimal point 1 place to the left. The power of 10 is 10 to the power of 1

23.6 = 2.36 × 10 to the power of 1
8 0
3 years ago
Read 2 more answers
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