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cupoosta [38]
2 years ago
7

The ratio of boys to girls is 5:3 there are 220 boys how many girls is it

Mathematics
1 answer:
Effectus [21]2 years ago
4 0

Answer:

Hi there!

Your answer is:

There are 132 girls per 220 boys!

Step-by-step explanation:

5b :3g

220b: x girls

220/5= 44

Since the multiplicative factor between 5 and 220 is 44, multiply both sides of 5:3 by 44.

5:3

×44

220boys: 132 girls

I hope this helps!

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It takes an airplane 5/12 of a minute to fly 3/4 of a mile. What is the airplanes speed per minute?
Nikitich [7]
To make this a little easier, you would want to turn 3/4 into 9/12, to match 5/12's denominator.

You would then just add 7/1 to both fractions

(5/12+7/1=12/12 or 1 minutes)
(9/12+7/1=16/12=1 1/3)

So your answer would be 1.333... miles per minute

Hope this helps
7 0
3 years ago
I am really confused about this question for math.. any help would be really appreciated:
Elina [12.6K]

y= (\frac 1 4 )^x

A reflection about the x axis, about y=0, is the mapping (x',y')=(x,-y) so

y'= -y = - (\frac 1 4)^{x'}

A dilation of 2 is the mapping (x'',y'')=(2x', 2y')

So

x'=x''/2, y'=y''/2

y''/2= - (\frac 1 4)^{x''/2}

y'' =  - 2((\frac 1 4)^{1/2})^{x''}

y''= - 2(\frac 1 2)^{x''}

We can rewrite that without the primes and combine the powers of 2.

y =  - 2^{1-x}

Let's graph these and see if we're close,

Plot y= (1/4)^x, y= - (1/4)^{x}, y = - 2^{1-x}

6 0
3 years ago
Estimate 80,767 - 37,291 by first rounding each number to the nearest thousand.
Evgen [1.6K]

81000-37000=44000

Rounded to the nearest thousand

3 0
2 years ago
Read 2 more answers
If a circle garden has a diameter of 60 feet and there’s a sidewalk 18 feet from the center, how long is the sidewalk?
Paul [167]

Answer:

Step-by-step explanation:

Conditions

  • A diameter must be chosen such that it meete the sidewalk perpendicular to itself.
  • The diameter meets the sidewalk at the sidewalk's midpoint.
  • The diameter meets the sidewalk such that the diameter is cut into two segments 30+18 and 12
  • The sidewalk is cut in 1/2 where the diameter meets the sidewalk as the diagram shows.
  • If all these conditions are met, the relationship between the four lines is

Equation

48/12 = x^2

Solution

4 = x^2

sqrt(x^2) = sqrt(4)

x  = 2

The length of the sidewalk is 4. Why is it doubled.

Because there are 2 xs of equal length

8 0
3 years ago
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lidiya [134]
The base length is 27 cm.
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plug in the known area and height into the formula: 513=19*b
divide off the 19: b=27
8 0
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