What is 420/1000 in simplest form

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Answer 1

Answer: The answer would be 21/50. If you have numbers with a few zeros you can cross one of the top amd bottom until you reach the other numbers, if that makes sense. You can changd 420/1000 to 42/100. Then just keep dividing it by a numner that goes evenly into both the numerator and denominator.

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On the lines below write a word problem that involves division and would have a correct answer of 4/7

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Jim was driving down a country road, late in the afternoon. He noticed that the farm he was passing had a peculiar way of separating it's sheep, male on one side and female on the other. There were 70 sheep in all, and 30 males. What percent of the sheep population were female?

Lea walked 1/2 miles in 1/3 hours. How long will it take Lea to walk 2 1/4 miles?
Enter your answer as a mixed number in simplest form in the box.

Answers

(1/2) / (1/3) = (2 1/4) / x......1/2 mile to 1/3 hr = 2 1/4 miles to x hrs
cross multiply because this is a proportion
(1/2)(x) = (1/3)(9/4)
1/2x = 3/4
x = 3/4 * 2/1
x = 6/4 = 1 1/2.....so it will take 1 1/2 hrs

Answer:

It will take Lea 1 1/2 hours to walk 2 1/4 miles.

What is the answer to the equation 5+2(x-1)=12

Answers

$5+2(x-1)=12 \n \n 2 ( x - 1) = 12 - 5 \ / \ subtract \ 5 \ from \ each \ side \n \n 2(x - 1) = 7 \ / \ simplify \n \n x - 1 = (7)/(2) \ / \ divide \ each \ side \ by \ 2 \n \n x = (7)/(2) + 1 \ / \ add \ 1 \ to \ each \ side \n \n x = (9)/(2) \ / \ simplify \n \n$

So, the answer to this problem is x = 9/2 or x = 4.5.

5+2(x-1)= 12
So you need to get rid of parentheses, which is that you have to distribute.
5+2x-2= 12
-5 -5 (Inverse)
2x-2= 7
+2 +2 (Another inverse)
2x= 9
2 2 (Divide)

x= 4.5
----------------------
Check
5+2(4.5-1)=12
5+2(3.5)=12
5+7=12
12=12

The pair of polygons is similar. Find the value of x.
I really need help.
Thanks <3

Answers

Because they are similar, they have the same proportions. In the bigger polygon, the one side is 25in, and in the smaller one, the side is 5in.
25÷5=5
So, you have to divide 65 by 5 to get your answer.
65÷5=13
13 inches is the answer

$(25)/(65)=(5)/(x)\n25x=325\nx=13$

Which statement best explains the value of 17 − (−3)?a. The additive inverse of −3 is −3, so 17 − (−3) = 20.
b.The additive inverse of −3 is +3, so 17 − (−3) = 20.
c.The additive inverse of −3 is −3, so 17 − (−3) = 14.
d. The additive inverse of −3 is +3, so 17 − (−3) = 14.