3 years ago

Help me please: Justine answered 75% questions correctly on an 80-questions test. How many questions did he answer correctly?

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

4 0

He answered 60 questions correctly.

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Compare the following numbers 52,458 blank 52,485

skelet666 [1.2K]

52,458<52,485
52,485-52,458=27

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3 years ago

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What percent of 752 is 25?

wariber [46]

25 is about 3.32% of 752.

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Which one is it A, B, C, or D?

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2 years ago

What is the ratio of the area of the inner square to the area of the outer square?

Anastasy [175]

Answer:

$\frac{(a-b)^2+b^2}{a^2}$

Step-by-step explanation:

Since, By the given diagram,

The side of the inner square = Distance between the points (0,b) and (a-b,0)

$=\sqrt{(a-b-0)^2+(0-b)^2}$

$=\sqrt{(a-b)^2+b^2}$

Thus the area of the inner square = (side)²

$=(\sqrt{(a-b)^2+b^2})^2$

$=(a-b)^2+b^2\text{ square cm}$

Now, the side of the outer square = Distance between the points (0,0) and (a,0),

$=\sqrt{(a-0)^2+0^2}$

$=\sqrt{a^2}=a$

Thus, the area of the outer square = (side)²

$=a^2\text{ square cm}$

Hence, the ratio of the area of the inner square to the area of the outer square

$=\frac{(a-b)^2+b^2}{a^2}$

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3 years ago

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John goes from a sauna at 115 Fahrenheit to an outside temperature of -30 Fahrenheit. What is the change in temperature?

IRINA_888 [86]

Answer: 115 - (-30) = 115 + 30 = 145 degrees change

Step-by-step explanation:

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2 years ago