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N76 [4]
3 years ago
14

Sally got 22 questions wrong on her quiz that had 40 questions on it. What is the percentage of the questions she got wrong?

Mathematics
1 answer:
nadezda [96]3 years ago
7 0
First, we have to calculate the percentage that Sally got in the quiz: 22/40x100%=55%
The percentage of the questions she got wrong: 100%-55%=45%
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3 years ago
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HELP YOU WILL GET 30 POINTS Naoya read a book cover to cover in a single session, at a rate of 55 pages per hour. After reading
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<h3>Answers:</h3>

total number of pages = 550 pages

total amount of time to read the full book = 10 hours

======================================================

Work Shown:

1 hour = 55 pages

4 hours = 220 pages ... multiply both sides by 4

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6 0
3 years ago
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marcela tardo dos horas menos que roberto en recorrer una distancia en bicicleta, SI el producto de los dos tiempos es de 48 hor
Kaylis [27]

Answer:

Marcela tardó 6 horas y Roberto tardó 8 horas.

Step-by-step explanation:

Dado que Marcela tardó dos horas menos que Roberto en recorrer una distancia en bicicleta, y sabiendo que el producto de los dos tiempos es de 48 horas, para determinar cuánto tardó cada uno se debe realizar el siguiente cálculo:

M = X

R = X + 2

X x (X + 2) = 48

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Por lo tanto, Marcela tardó 6 horas y Roberto tardó 8 horas.

8 0
3 years ago
Having trouble here
Leya [2.2K]
I hope this helps (:

4 0
3 years ago
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