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BigorU [14]
3 years ago
15

The ratio of girls to boys in Liza’s classroom is 5 to 4

Mathematics
1 answer:
nikitadnepr [17]3 years ago
5 0
The answer is 15. There are more girls than boys. 27 divided by 2 is 13.5. As the ratio is 5:4 the number of girls must be higher than 13.5, which cancels out 12 and 9. 54 is too great so the answer is 15. 
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Find the zeros of each function. State the multiplicity of multiple zeros. Y=(2x+3)(x+3)
gregori [183]
Here are the answers
Zeros: x= -3/2 x=-3
6 0
3 years ago
Note: Figure is not drawn to scale. If x = 7 units, y = 12 units, and h = 10 units, then what is the area of the parallelogram s
AysviL [449]

Answer:

70 units squared

Step-by-step explanation:

A=bh=7·10=70

Hope this helps! <3

6 0
3 years ago
Read 2 more answers
The prime factor of 180
alisha [4.7K]

Answer: 5*2*2*3*3

Step-by-step explanation:

First you divide 180 by 2 and you get 90. Then you proceed to divide that by 2 again and get 45. You will then divide 45 by 3 to get 15. Then divide 15 by 3 again and get 5, which cannot be divided any smaller.

180/2=90

90/2=45

45/3=15

15/3=5

6 0
3 years ago
Simplify 4^7/5^2 all raised to the 3rd power<br><br> 4^10/5^5<br> 4^4/5<br> 4^21/5^6<br> 12^7/15^2
zepelin [54]
[4^7/5^2]³ = 4^21/5^6

When a power is raised to an other power, you multiply these 2 powers

Answer: 4^21/5^6
5 0
4 years ago
The tempature is -3 degress.The temperature is expected to decrease 2.5 degress each hour until the temperature reaches -18 degr
Andrews [41]

We can set this problem up as an algebraic equation, which we can then solve to find our answer.


We start at -3. So we can start our equation with that:

-3


However, this doesn't represent any change in temperature, just that we start at -3. To show change, we will use the variable x, where x stands for the number of hours. Each hour accounts for a change of -2.5 in degrees, meaning that we must multiply our x by -2.5. We can now add this term into our equation:

-3 - 2.5x


We are trying to find when we will reach -18 degrees, so we will set our entire equation equal to -18 and solve:

-3 - 2.5x = -18

-2.5x = -15

x = 6


It will take us 6 hours, or choice A.

6 0
3 years ago
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