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lidiya [134]
2 years ago
9

Equation practice ........​

Mathematics
2 answers:
torisob [31]2 years ago
6 0

Answer:

it looks hard

Step-by-step explanation:

enot [183]2 years ago
4 0

Answer:

Step-by-step explanation:

OA ⊥ OC

Therefore, m∠AOC = 90°

m∠AOC = m∠AOB + m∠BOC

m∠AOB + m∠BOC = 90

5x+8 + 6x - 6 = 90

11x + 2 = 90

11x = 90-2

11x = 88

x = 88/11

x = 8

m∠BOC = 6x - 6 = 6*8 - 6 = 48 - 6 = 42°

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A train ticket cost $14 .Don paid with $20 bill .How much money should he get back
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Answer:

$6

Step-by-step explanation:

$20-$14=$6

3 0
3 years ago
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In a group of 15 children the ratio of the boy : the girl is 2: 3: 5 more girls join the group. Calculate the percentage of boys
marta [7]

Answer:

Percentage of new group boys = 30%

Percentage decrease for the boys = 10%

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Step-by-step explanation:

Given:

Number of children = 15

Ratio (Boys to Girls) = 2 : 3

Number of more girls join = 5

Find:

Percentage of boys in new group

Percentage decrease for the boys

Increase percent of the girls

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Number of girls = 15[3/5]

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Percentage of new group boys = [6 / 20]100

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Percentage of new group girls = [14 / 20]100

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Increase percent of the girls = 70% - 60%

Increase percent of the girls = 10%

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3 years ago
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