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Sergeeva-Olga [200]
3 years ago
7

My teacher gave me this question to solve and I don't understand it at all.....Does anyone understand it or is the question wron

g???
Liz and Mary compete in solving problems. Each of them is given the same list of 100 problems. For any problem, the first of them to solve it gets 4 points, while the second to solve it gets 1 point. Liz solved 60 problems, and Mary also solved 60 problems. Together they got 312 points. How many problems were solved by both of them?
Mathematics
1 answer:
igor_vitrenko [27]3 years ago
6 0
It looks like you need to just take out the points completely and just add together the problems each of them solved... so 60+60=120
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The formula for the nth square number is S_n = n^2. Use the formula to find the 11th square number​.
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2 years ago
19. The areas of corresponding faces of two similar hexagonal prisms are 25 cm² and 121 cm². What is the ratios of the correspon
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ANSWER

I) 5:11

ii) 5:11

iii) 125:1331

EXPLANATION

Let the side lengths be in the ratio:

x:y

This implies that the area will be in the ratio:

\frac{ {x}^{2} }{ {y}^{2} }  =  \frac{25}{121}

Take positive square root.

\frac{x}{y}  =  \sqrt{ \frac{25}{121} }

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The volume will be in the ratio

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3 years ago
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