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3 years ago

15

(x-10=-4) solve one step equation

1 answer:

riadik2000 [5.3K]3 years ago

8 0

Answer:

x=6

Step-by-step explanation:

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Why is<br>10¹⁵<br>10⁴<br>equal to 10¹¹? <br>_EXPLAIN OR SHOW your thinking_

gulaghasi [49]

Answer:

10 to the power of 15 - 10 to the power of 11= 10 to the power of 4

Step-by-step explanation:

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3 years ago

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What form is this equation in? y + 6 = (1/2)(x - 4)

maks197457 [2]

Y +6 =(1/2)(x+4)

y +6 = 1/2 x +2
y=1/2 x - 4

or 1/2 x -y = 4

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Jesse won his race by 3 45/100 seconds. What is this number written as a decimal

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345/100 is 3.45 (:
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4 years ago

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Suppose 56% of students chose to study Spanish their senior year, and that meant that there were 98 such students. How many stud

Varvara68 [4.7K]

The number of students who chose not to study Spanish in their senior year is 124.

In mathematics, a percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word per cent means per 100. It is represented by the symbol “%”.

Given that

56% Students studied Spanish, which means 44% did not study Spanish.

In mathematics, a ratio shows how many times one number contains another.

Hence if the ratio is:

56 : 44 = 14:11

Then, the number of students who did not study Spanish is:

(14/11)×98 = 124.

Therefore the correct answer is 124.

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5 0

2 years ago

The amount of chlorine in a swimming pool is proportional to the volume of water. The pool has 2.5 milligrams of chlorine per li

stira [4]

Answer:

There are <u>20,000 milligrams</u> chlorine in the pool.

Step-by-step explanation:

Given:

The chlorine per liter of water in the pool is 2.5 milligrams.

The volume of water in the swimming pool is 8000 gallons.

Now, to find the quantity of chlorine in the pool.

Let the quantity of chlorine be $x.$

The gallons of water in the swimming pool = 8000.

The milligrams of chlorine per liter of water in the pool = 2.5.

According to question, the amount of chlorine in the swimming pool is proportional to the volume of water.

So, 2.5 mg of chlorine is equivalent to 1 liter.

Thus, $x$ is equivalent to $8000.$

Now, to get the quantity of chlorine by using cross multiplication method:

$\frac{2.5}{1} =\frac{x}{8000}$

<em>By cross multiplying we get:</em>

$20000=x\\\\x=20,000\ mg.$

Therefore, there are 20,000 milligram chlorine in the pool.

6 0

3 years ago