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Lunna [17]
3 years ago
5

I need help with this i really dont understand it. :)

Mathematics
1 answer:
nikdorinn [45]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

Given 2 sides of a triangle then the third side x is in the range

difference of 2 sides < x < sum of 2 sides

(11)

given 2 sides 2, 6 , then

6 - 2 < x < 6 + 2

4 < x < 8

(12)

Given 2 sides 4, 12 , then

12 - 4 < x < 12 + 4

8 < x < 16

(13)

Given 2 sides 2, 11 , then

11 - 2 < x < 11 + 2

9 < x < 13

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Andrej [43]

Answer:

f=21

Step-by-step explanation:

The equation you could write is -4f=-84. Solving this (dividing by -4 on both sides), your answer is that f=21.

3 0
3 years ago
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There are 15 boys and 45 girls competing in a race. What is the ratio of girls to boys in the race , lowest terms ?
Ivanshal [37]
<h3>Answer =  3:1</h3>

==========================================

Work Shown

45 girls : 15 boys

45/15 girls : 15/15 boys .... divide both parts by 15

3 girls : 1 boy

This tells us there are three times as many girls as there are boys.

We write this as the ratio 3 : 1. The order of the terms is important. We cannot say 1:3 since that would imply there are more boys than girls, but it's the other way around.

7 0
3 years ago
Kim, Laura and Molly share £385
trapecia [35]
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 x = 2/5y, since the ratio is 2:5.
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Substitute x into this equation, so that y = 105 + 2/5y. Subtract 2/5y from both sides to get 3/5y = 105. Divide each side by 0.6 (equivalent to 3/5) and you get y = 175, which is how much Molly has. Kim gets 2/5 of Molly's share (or 105 fewer pounds), so she has 70.

70 + 175 (Kim and Molly's shares) is equal to 245. Therefore, Laura receives the remaining 140 pounds.

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Thus, Laura receives about 36.4% of the total money. Hope this helps (:
5 0
3 years ago
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<h3>First answer is correct</h3>

Step-by-step explanation:

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Sedaia [141]

Answer:

Step-by-step explanation:

https://www.toppr.com/ask/question/find-the-value-of-k-such-that-the-polynomial-x2k6x22k1/

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