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Dvinal [7]
3 years ago
9

If you have 27 questions and score 70% how many questions did u miss?

Mathematics
2 answers:
devlian [24]3 years ago
6 0
To find 70%, or 7/10ths, divide 27 by 10 then multiply by 7.
27/10 = 2.7
2.7*7 = 18.9

Final Answer:
18.9 is 70% of 27
Hope I helped :)
gogolik [260]3 years ago
3 0
I think the answer is 19
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8 0
3 years ago
(5/6)^4x=(36/25)^9-x, please help solve for x, and the 9-x is all superscript
stiks02 [169]
\frac{36}{25}=\frac{6^2}{5^2}=\left(\frac{6}{5}\right)^2=\left(\frac{5}{6}\right)^{-2}\\\\therefore:\\\\\left(\frac{5}{6}\right)^{4x}=\left[\left(\frac{5}{6}\right)^{-2}\right]^{9-x}\\\\\left(\frac{5}{6}\right)^{4x}=\left(\frac{5}{6}\right)^{-2(9-x)}\iff4x=-2(9-x)\\\\4x=-2\cdot9-2\cdot(-x)\\\\4x=-18+2x\ \ \ \ \ |subtract\ 2x\ from\ both\ sides\\\\2x=-18\ \ \ \ \ \ |divide\ both\ sides\ by\ 2\\\\\boxed{x=-9}


Use:\\a^{-n}=\left(\frac{1}{a}\right)^n\\\\\left(a^n\right)^m=a^{n\cdot m}\\\\\left(\frac{a}{b} \right)^n=\frac{a^n}{b^n}
6 0
3 years ago
Read 2 more answers
50% of what number is 32?
andriy [413]
So you know 50% means half right? So then do 32*2 and you get 64.
6 0
3 years ago
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What is the equation of the line that passes through the point (-3, 2) and has a<br> slope of -2/3
Mazyrski [523]

Answer:

y=-2/3x

Step-by-step explanation:

if you use the graphing calculator, the y intercept of the equation is 0 therefore y=mx

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5 0
3 years ago
Which equation represents a circle with a center at (-3,5) and a radius of 6 units
Fittoniya [83]

Answer:

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Step-by-step explanation:

We can write the equation of a circle as

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(x- -3)^2 +(y-5)^2 = 6^2  

(x+3)^2 +(y-5)^2 = 36

5 0
3 years ago
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