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mel-nik [20]
2 years ago
8

Please help me! I really need help!

Mathematics
1 answer:
NemiM [27]2 years ago
8 0

Answer:

7d +d +d=45

Step-by-step explanation:

The length shown for the green line is shown as 45 therefore the black line also has 45

to prove your answer:

7d + d + d = 45

9d = 45

you need to get the letter d on its own so you

9d ÷9 = 45 ÷ 9 (what you do on the one side,you do on the other)

d = 5

*substitute

5 + 7(5) + 5

= 5+ 35 + 5

= 40 +5

= 45

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There are 7 girls and 9 boys on a playground.
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The ratio of the number of girls to the total number of children is 7 : 16.

<h3>Ratio is defined as follows:</h3>
  • It is a comparison between two or more numbers that measures sizes in relation to each other
  • It describe how much of a thing is compared to another.

The number of girls in the playground = 7

The number of boys in the playground = 9

The total number in the playground is the sum of the number of girls and the number of boys.

Therefore,

total children in the playground = 7 + 9 = 16

The ratio of the number of girls to the total number of children can be express as follows:

  • Ratio  = 7 : 16

learn more on ratio here: brainly.com/question/26169121?referrer=searchResults

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