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Digiron [165]
3 years ago
5

The biology Club has 18 members, 3 girls and 15 boys. What is the ratio of girls to boys in the biology Club

Mathematics
2 answers:
Liula [17]3 years ago
5 0

Answer:

3:15 or 3 to 15

Step-by-step explanation:

I hope this helps :)

AnnZ [28]3 years ago
4 0

Answer:

The answer should be 3:18

Step-by-step explanation:

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aleksklad [387]
5-1=4. When you take away 5 from 1 you get 4
3 0
3 years ago
If 7 is the mean of 10,3,4,a,6,9 and 10.find the value of a
nydimaria [60]

Answer:

a = 7

Step-by-step explanation:

I think, what you need to do, is first understand how to find the mean of anything: It's quite simple, actually, just add up all the numbers, then divide that number by the number of numbers. So, let's put it in perspective:

10, 3, 4, a, 6, 9, 10

7 is the mean. 7 is the number of numbers.

If, to find the mean is: 10 + 3 + 4 + a + 6 + 9 + 10= 7a ÷ 7, then: 10 +3 + 4+ 6 + 9 +10= 42

42 plus what divided by 7 is the question now.

42 + a ÷  7= 7

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8 0
3 years ago
45% of the population of a town are men and 35% are women. If the number
Yakvenalex [24]

Answer:

67,500 men

Step-by-step explanation:

Percent of children = 20% (.2)

30,000 x 5 = 150,000 (Total pop.)

150,000-30,000 = 120,000 (Pop. minus children)

.35 (Percent of women) x 150,000 =52,500

120,000-52,500 = 67,500

3 0
4 years ago
Read 2 more answers
Figure A maps to figure B with a scale factor of 1 1/2.<br> What is the value of x?
aalyn [17]

Answer:

x = 6/2 = 3

Step-by-step explanation:

This is a dilation. A dilation is a change in size, whether it is an enlargement or reduction.

The scale factor is how much the enlargement is.

The side of Figure A is 2.

So we must multiply 2 ⋅ 1 1/2.

2 ⋅ 1 1/2 (3/2) = 6/2

6/2 is equal to 3.

Therefore, the value of x in Figure B is 3.

8 0
3 years ago
Which of the following is the equation for the line perpendicular to the line y=−x+20 that passes through the point (−4, 2)?
coldgirl [10]
I have a feeling it’s a but I’m not that sure good luck might want to wait on other peoples opinions
7 0
3 years ago
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