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Georgia [21]
3 years ago
10

1/5 of a class of children signed up for a mathematics competition. There were 10 boys and 30 girls who did not sign up. How man

y children signed up for the competition
Mathematics
2 answers:
Mkey [24]3 years ago
4 0

Answer:

10 children signed up for the competition

Step-by-step explanation:

1/5

30 girls 10 boys = 4%

the only % left is 1

10 student = 1%

Veronika [31]3 years ago
3 0
10+30=40(total number of students in the class)
take this number and divide by 5

40/5=8 (students)

ANSWER: 8 students signed up for the competition
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Please help me <br> Look at the image
Leto [7]

Answer:

74 degrees

Step-by-step explanation:

As sum of interior and exterior at a vertex add to 180, subtract 106 from 180 to get 74 degrees

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2 years ago
A population of rabbits in a lab, p(x), can be modeled by the function p(x) = 20(1.014)x , where x represents the number of days
Nitella [24]

Answer:

20 = initial population of the rabbits

1.014 = growth rate of the rabbits

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Step-by-step explanation:

A population of rabbits in a lab, p(x), can be modeled by the function

p(x) = 20(1.014)^x

This model is exponential. Where 20 = initial population of the rabbits

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To find the average rate of change from day 50 to day 100,

find the population p(50) and p(100). Subtract them and divide by 100 - 50 = 50. 

p(50) = 20(1.014)50 = 40.08... 

p(100) = 20(1.014)100 = 80.32... 

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The rate of change is 0.8. 

7 0
3 years ago
When principal = Rs x, Time = y years and Rate = z% per year, calculate the simple interest.
Marianna [84]

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using formula

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Step-by-step explanation:

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