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yuradex [85]
3 years ago
7

Mamadou answered 77 questions correctly on his multiple choice math final that had a total of 140 problems. What percentage of q

uestions did Mamadou answer correctly on the final exam?
Mathematics
2 answers:
allochka39001 [22]3 years ago
8 0

Answer:

Step-by-step explanation:

Mamadou answered 77 questions correctly on his multiple choice math final that had a total of 140 problems. What percentage of questions did Mamadou answer correctly on the final exam?

vichka [17]3 years ago
3 0

Answer:

I got 45% but I'm not sure its correct

Step-by-step explanation:

I used the method were you use this formula 140-77/140

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8 orchid plants and 12 lily plants sell for $362. 12 orchid and 8 lily plants sell for $388. How much does the lily plant charge
vlabodo [156]

Answer:

$15.5

Step-by-step explanation:

let a = price of one orchid plant

8 orchids would cost 8 x a = 8a

12 orchids would cost 12 x a = 12a

Let b = price of one lily plant

12 lilies would cost 12 x b = 12b

8 lilies would cost 8 x b = 8b

8a + 12b = 362 -- eqn 1

12a + 8b = 388 -- eqn 2

to solve, multiply equation 1 by 8 and equation 2 by 12

64a + 96b = 2896 equation 3

144a + 96b = 4656 equation 4

substract equation 4 from 3

80a = 1760

a = $22

Substitute for a in eqn 1 and solve for b

8(22) + 12b = 362

b = $15.5

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3 years ago
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3 years ago
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Pls help will give 5 star and brainliest
Luba_88 [7]

Answer:

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Step-by-step explanation:


3 0
4 years ago
Given: △DKS, m∠K = 90°<br> Find: m∠DOS
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Answer:  

135

Step-by-step explanation:

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4 years ago
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