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Aliun [14]
3 years ago
13

13r=3/7 what is r?

Mathematics
2 answers:
Oxana [17]3 years ago
8 0
R = 3/91 since 3/7 is equal to .42857 and 13 divided by .42857 is 3/91.

worty [1.4K]3 years ago
6 0
The answer would be D) R = 3/91. Here are the steps.

1. divide both sides by 13

2. reduce 3/7 and 13 to 3/7*13

3. reduce 7 * 13 to 91.

* Reduce = Simplify.
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A circle with area 100π has a sector with a central angle of 2/5π radians.
Snowcat [4.5K]

Answer:

  20π square units

Step-by-step explanation:

The sector area is found using the proportion ...

  sector area / circle area = sector angle / whole circle angle

Multiplying by "circle area", we get ...

  sector area = (circle area)( sector angle / whole circle angle)

  = (100π)(2/5π)/(2π)

  = (100π)(1/5)

  sector area = 20π

3 0
3 years ago
What is the answer to 7/8+4.2-4/5 equals what
natta225 [31]
So, first turn your fractions into decimals. ⅞ = 0.875 which rounded is 0.88. 4/5 = 0.8. Next, put the decimals into the equation to replace the fractions. 0.88 + 4.2 - 0.8. Next solve the problem. So 0.88 + 4.2 = 5.08. Now your equation should look like this 5.08 - 0.8. Then subtract 0.8 from 5.08 which gives you 4.28. So 4.28 is your answer.
7 0
3 years ago
Please answer correctly !!!!!!! Will mark brainliest !!!!!!!!!!!
Kitty [74]

Answer & Step-by-step explanation:

In the problem, we are given an equation. h(t) = -20 + 11t

In the equation, t represents an unknown value. So, if we are given a number that is in the replacement of t, then we can plug that number in to where t is at.

t = 11

h(11) = -20 + 11(11)

h(11) = -20 + 121

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So, h(11) is equal to 101

3 0
3 years ago
Read 2 more answers
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stiv31 [10]

Answer:

B

Step-by-step explanation:

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4 0
3 years ago
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Figure A is a scale image of Figure B. Figure A: 4. Figure B: x. The scale that maps Figure A onto Figure B is 1:4 1/2. Enter th
Blababa [14]

Answer:

18

Step-by-step explanation:

A : B

1 : 4½

4 : X

1/4.5 = 4/X

X = 4×4.5 = 18

8 0
3 years ago
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