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DerKrebs [107]
3 years ago
8

James answered 84% of the test questions correctly. He answered 21 questions correctly. How many questions were on the test?

Mathematics
1 answer:
Dimas [21]3 years ago
3 0
There were 25 questions. 21/25 x 100 = 84%
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The Pythagorean theorem states that the sum of the squares of the legs of a right triangle is equal to the square of the
jekas [21]

Answer:

For the value of hypotenuse can be irrational, sum of squares of other two legs might be imperfect square number.

Step-by-step explanation:

We all know, the Pythagorean theorem can be stated as follows:

The sum of squares of two legs of a right angled triangle is equal to the square of the hypotenuse.

i.e.

a^2+b^2=c^2

Where, c is the hypotenuse and a, b are the two other legs of the right angled triangle.

Given that:

a and b are rational numbers.

To find:

Situation for which c is irrational.

Square of a rational number is always rational.

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And sum of squares of two rational numbers will also be rational.

Therefore, a^2+b^2 will also be rational.

and

c = \sqrt{a^2+b^2}

For the value of c can be irrational, sum of squares of other two legs might be imperfect square number.

4 0
2 years ago
40 point.!!!! HELP ME PLEASE MY MOM GONNA YELL AT ME
scoundrel [369]

Question 1)

Gwen has already burned 100 calories when Tristan and Keith started, and he continues to burn 10 calories per minute. The equation for Gwen is

y = 100 + 10x

Question 2)

`Tristan is burning 125 calories every 10 minutes. His burning calories rate is 12.5 calories per minute. The equation for Tristan is

y = 12.5x

Question 3)

Keith is burning 300 calories in 30 minutes. His rate per minute is 10 calories per minute. The equation for Keith is

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3 years ago
What is the result when 2x^3-5x^2-x+6 is divided by x+1?
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(

2

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8 0
3 years ago
Tesfa is x years old his father is 4 times as old as tesfa his mother is 7 years younger than his father If their ages add up to
Sergio039 [100]

Step-by-step explanation:

his father's age= 4x

his mother's age= 4x- 7

his age= x

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x+ 4x+ 4x= 101+ 7

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\frac{9x}{9}= \frac{108}{9}

x= 12

Tesfa is 12 years old

4 0
3 years ago
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Convert all the improper fractions into mixed numbers, then simplify. Then, you do the operations.
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