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3 years ago

I need help on this i dont get it and i need to bring my homework by tomorrow

Mathematics

1 answer:

natita [175]3 years ago

7 0

a ratio is how many X there are per Y. for example, a fraction is a ratio: 10/5 = 2 because there are 2 fives in a ten. but usually a ratio is written as x:y.

so to find these ratios, first we need to find the number of girls. 30 students-16 boys = 14 girls.

the ratio of girls to boys is 14:16 because there are 14 girls to every 16 boys. we simplify this to 7:8.

the ratio of girls to all students is 14:30. we simplify this to 7:15.

the ratio of boys to girls is 16:14, which simplifies to 8:7.

the ratio of boys to all students is 16:30, which simplifies to 8:15.

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Step-by-step explanation:

X/15 = 32/20

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2 years ago

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irinina [24]

Answer:

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3 years ago

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I need help with 5-6 PLEASEEEE!! Also please excuse the answers cause I know it’s wrong

sergey [27]

Step-by-step explanation:

angle STQ is the supplementary angle (together they are 180° below line MQ) to 2x + 8.

above ST we have a group of 3 angles that combine to 180° :

2x + 8

90°

71 - x

so, to get x first :

2x + 8 + 90 + 71 - x = 180

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so, the angle MTS =

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therefore, the angle STQ is

180 - angle MTS = 180 - 30 = 150°.

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2 years ago