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cricket20 [7]
3 years ago
12

Walter is mixing cement for his new patio. He knows he needs to water-to-cement ratio of 20-30. What percent of his total mixtur

e is water?
Mathematics
1 answer:
shtirl [24]3 years ago
5 0
The ratio of water to cement is 20:30 meaning that for every 20 parts of water, we have 30 parts of cement. There are 20+30 = 50 parts total.

Divide the number of parts of water (20) over the total number of parts (50)
20/50 = 2/5 = 0.40
use a calculator or long division to find the decimal form of 2/5 to be 0.40

Then move the decimal point 2 spots to the right to go from 0.40 to 40%

Answer: the percent of water in the mix is 40%
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Simplify (4ab^2)^3<br><br> Any help is appreciated
Pie

Answer:

64a^{3} b^{6}

Step-by-step explanation:

1) Distribute the exponent outside of the parentheses to the terms inside the parentheses. In this case, multiply the 3 outside the parentheses with the exponent of each of the terms inside:

(4ab^{2} )^3

4^{3} · a^{3} · b^{6}

2) The variables are fine - you can't simplify them further. All you need to do now is multiply the 4^{3} out. Remember that it's kind of like asking, "what is 4 × 4 ×4?"

4 · 4 · 4 · a^{3} · b^{6}

16 · 4 · a^{3} · b^{6}

64a^{3} b^{6}

Therefore, 64a^{3} b^{6} is the answer.

3 0
3 years ago
Someone please help me ASAP!
loris [4]
It would be (-5,-1) yw
8 0
3 years ago
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Consider a graph of the equation y = x + 6. What is the y-intercept?
Ratling [72]
In y = mx + b form, which is what ur equation is in, the y int can be found in the b position

y = mx + b
y = x + 6

as u can see, the number in the b position, ur y int, is 6 <==
7 0
2 years ago
R is between Q and S. if RS = 44.6 and SQ = 68.4, find QR
Igoryamba
QR IS 23.8! Just subtract 68.4-44.6. The answer is right because 44.6+23.8=68.4
4 0
3 years ago
Im stuck please help solve these equasions much appreciated
borishaifa [10]

Answer:

Volume :

=1/3 a^2h

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Hope this helps you out and is what you were looking for! ☺

7 0
3 years ago
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