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Vikentia [17]
3 years ago
12

Andrew answered 21 out of 25 questions correctly on his math test. Written as a decimal, what portion of Andrew's answers were c

orrect?
Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
8 0
Since we are calculating the amount that he got correct, we must divide the numerator by the denominator or make the denominator equal 100. I will do it the second way as it is easier in this case.

25*4 = 100
21*4 = 84

84/100 = 0.84

As a decimal, Andrew got 0.84 of his test correct. Hope this helps!
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16 - 4 [ 3 + 2 / (9 - 7)]
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aivan3 [116]

Answer:

They are b and c.

Step-by-step explanation:

Let's simplify each expression:

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What is 39.79949748 rounded to the nearest hundredth?
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Answer:

Number = 39.80

Step-by-step explanation:

Given

Number = 39.79949748

Required

Approximate (to the nearest 100th)

This means that, we approximate at the second digit after the decimal.

So:

i.e,

Number = 39.79  [Begin  approximation] 949748

The first digit after [Begin approximation] is then approximated using the following rule:

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5 - 9 \approx 1\\

Since 9 falls in 5 - 9 \approx 1\\ category, the number becomes:

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2 years ago
Use exponents to write an expression for one billion
kykrilka [37]
The anser would be 500 with the exponet of 100 solve my multiplying
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3 years ago
Arjun sells handmade ceramic mugs he Mark's them up by 60% to make a profit they cost $8 in materials how much do this mugs cost
Reptile [31]

Answer:

$12.80

Step-by-step explanation:

Before markup: $8

After markup: $8 x 160% = $12.80

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