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3 years ago

How do I evaluate this?

Mathematics

1 answer:

prohojiy [21]3 years ago

3 0

First you'd find 1/50 as a decimal by dividing 1 and 50 which gives you 0.02. 0.02 as a decimal is 2 so add 2 to the other numbers and you'll get 234.5%. Hope it helped

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They called me weak

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2 years ago

In two or more complete sentences write and solve an equation for the situation and explain how you will solve the equation. Fif

miv72 [106K]

We conclude that the starting average grade is 79.17%

<h3>How to write the equation and solve it?</h3>

There are 50 students, let's say that the grades are measured between 1% and 100%.

And the average grade of the 50 students is A.

We know that after it increased by 20%, the average of the grades is 95.

Then we just need to solve the percentage equation:

95 = A*(1 + 20%/100%) = A*(1.2)

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We conclude that the starting average grade is 79.17%

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3 years ago

Sketch over the interval [0, 2π] the graph of: y = sin(x + π)<br>

LuckyWell [14K]

Answer:

solve the inequality /2x-1/≥3

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2 years ago

A triangle has side lengths of (q+r)(q+r) centimeters, (5q-10s)(5q−10s) centimeters, and (5s-7r)(5s−7r) centimeters. Which expre

Stolb23 [73]

The expression represents the perimeter, in centimeters, of the triangle is 6q - 6r - 5s

<h3>What is the perimeter?</h3>

The formula for perimeter of a triangle is expressed as;

Perimeter = a + b + c

Where a , b and c are the lengths of its side

(q+r)
(5q-10s)
(5s-7r)

Now, let's substitute the values

Perimeter = (q + r) + (5q - 10s) + (5s - 7r)

expand the bracket

Perimeter = q + r + 5q - 10s + 5s - 7r

collect like terms

Perimeter = q + 5q + r - 7r -10s + 5s

Add like terms

Perimeter = 6q - 6r - 5s

Thus, the expression represents the perimeter, in centimeters, of the triangle is 6q - 6r - 5s

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