Use the rules of multiplication by powers of 10 to calculate 20 times 100.

Answers

Answer 1

Answer: its 2000 becasue 200* 10 eqoals 2000

Answer 2

Answer: The answer is 2000 because 20 times 100 it equals 2000

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What is the simplified expression for 2(x - 5)?

Answers

If you would like to know the simplified expression for 2 * (x - 5), you can find this using the following steps:

2 * (x - 5) = 2 * x - 2 * 5 = 2 * x - 10

The correct result would be 2 * x - 10.

The answer would be 2x-10

4x – 4 – 3x > 13 – 7x – 1 + 8

Answers

If you would like to solve the inequation 4 * x - 4 - 3 * x > 13 - 7 * x - 1 + 8, you can do this using the following steps:

4 * x - 4 - 3 * x > 13 - 7 * x - 1 + 8
4 * x - 3 * x + 7 * x > 4 + 13 - 1 + 8
8 * x > 24 /8
x > 24/8
x > 3

The correct result would be x > 3.

Mike wants to put a rope around a rectangular plot of flowers he just planted. What would be the best measurement to find the length of the rope Mike needs?

A.
the height of the plot of flowers

B.
the perimeter of the plot of flowers

C.
the area of the plot of flowers

D.
the length of one side of the plot of flowers

Answers

Oh, the perimeter of the plot is absolutely what the length of the rope should be.

Keiala drives 324 miles in 4 hours. How many miles does she drive each hour?

Answers

She drove an average of 81 miles per hour.

324/4 = 81

she drove 81 miles an hour.

Russian ice breaker yamal can move forward 2.3 meters thick ice at a speed of 5.5 kilometers per hour how long will it take to travel 82.5 kiolometers

Answers

The train travel at 5.5 km per hour .We know that in X hours it will advance by X*5.5 = 82.5 , hence X = 82.5/5= 15It will take 5 hours .I hope I really help !

Cos2a=1-2sin^2a for all values of a.

Answers

$cos2a= cos^(2) a- sin^(2) a \n but \ cos^(2) a + sin^(2) a=1 \n i.e. \ cos^(2) a=1- sin^(2) a$
Therefore,
$cos2a=1- sin^(2) a- sin^(2) a \n =1-2 sin^(2) a$

true (just did this on apex)

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What is x to the power of 3 divided by x to the power of -5

For the function f(x) = -2(x + 3)^2 -1, identify the vertex, domain, and range. A.) The vertex is (3, -1), the domain is all real numbers, and the range is y ≥ -1. B.) The vertex is (3, -1), the domain is all real numbers, and the range is y ≤ -1. C.) The vertex is (-3, -1), the domain is all real numbers, and the range is y ≤ -1. D.) The vertex is (-3, -1), the domain is all real numbers, and the range is y ≥ -1