How do you do scientific notation? what is 1.20 x 10 to the 3rd power

Answers

Answer 1
Answer: Move the decimal point _ places to the right by looking at the exponent if 10 so that one is just 12.0
Answer 2
Answer: take 1.20 and move your decimal to the right 3 places and you will get your answer

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A circle has a diameter of 8 m. What is the circumference of the circle? (Express your answer using π.)


A.


B.


C.


D.

Answers

The answer is B. The formula for circumference is 2piR or just the diameter times pi

What is the answer to 4x+5=12x

Answers

4x + 5 = 12x


4x+512x=12x12x

−8x=−5
/-8     /-8


x = 5/8

Kevin has 3 bags of apples weighing a total of 22 1/2 pounds.Two of the bags weigh 6 3/8 pounds and 3 1/4 pounds.How much does the third bag weigh?

Answers

3 bags total 22 and 1/2
bag1+bag2+bag3=22 and 1/2
two of the bags weight 6 and 3/8 and 3 and 1/4 so just assign them random bags
bag1=6 and 3/8
bag2=3 and 1/4
subsitute

6 and 3/8+3 and 1/4+bag3=22 and 1/2
we have to add them by making the bottom number same

 6 and 3/8+3 and 1/4
common one is 8
6 and 3/8+3 and 2/8
6+3/8+3+2/8
9+5/8


9 and 5/8+bbag3=22 and 1/2
subtract 9 and 5/8 from both sides
bag3=22 and 1/2-9 and 5/8
bag3=22+1/2-9-5/8
bag3=22+4/8-9-5/8
bag3=21+8/8+4/8-9-5/8
bag3=21+12/8-9-5/8
bag3=21-9+12/8-5/8
bag3=12+7/8
bag3=12 and 7/8

answe ris 12 and 7/8 pounds



First, you change 6 3/8 and 3 1/4 to a common denminator. 8

6 3/8= 6 3/8
3 1/4= 3 2/8 (x2)

Then add those.

6 3/8+ 3 2/8 = 9 5/8

Then subtract 22 1/2 and 9 5/8. (Common denominator)

22 1/2= 22 4/8 (x4)
9 5/8= 9 5/8

the 3rd bag is 12 7/8 lbs.

You can also add each bag (lbs) to see if it gets to 22 1/2
Hope this helps!

Explain why it does not matter what letter or symbol is used to find an unknown number

Answers

A variable represents an unknown quantity.  No matter which variable you use, it will represent the same unknown quantity, and the same process will be used to solve the problem.  Which variable you use is irrelevant.
It's because the letter represents a number, so it doesn't matter what letter.

50/117 in simplest form

Answers

It remains the same. (50)/(117) cannot be simplified

Find the Missing Hypotenuse

Answers

The original triangle had a hypotenuse of 26, a height of 10, and a base of 24. Using the Pythagorean Theorem, these measurements make sense.

a² + b² = c²
24² + 10² = 26²
576 + 100 = 676
676 = 676

The triangle's base has now been changed to 48, since 24 was doubled. The height of the triangle is still 10. Using the Pythagorean Theorem, which we just practiced with, we can find the missing hypotenuse, or the length of the ramp.

48² + 10² = c²
2304 + 100 = c²
2404 = c²
49.03 = c

The ramp needs to be about 49 feet long.