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3 years ago

7

Thirty pounds of a salt-water solution contains fifteen percent salt. How much salt is in the water?

2 answers:

Gala2k [10]3 years ago

6 0

The choice of answer found above that best fits the answer to the question would be Option 3, 4.5lb.

Hope this helped, if you need to find out how to get that answer for future references let me know in the comments! Have a good day!

Georgia [21]3 years ago

5 0

You need to find 15 percent of 30 lb.
To find a percent of a number, multiply the percent by the number.
First, divide the percent by 100, or move the decimal point of the percent to places to the left.

15% of 30 lb =
= 15% * 30 lb
= 0.15 * 30 lb
= 4.5 lb

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Sam borrows $5700 at 4.5% simple interest for 3 years. Find the interest

kherson [118]

Answer:

The interest is

<h2>$ 769.50</h2>

Step-by-step explanation:

Simple interest is given by

$I = \frac{P \times R \times T}{100}$

where

P is the principal

R is the rate

T is the time given

From the question

The principal / P = $ 5700

The rate / R = 4.5%

The time given / T = 3 years

So the interest is

$I = \frac{5700 \times 4.5 \times 3}{100}$

$I = \frac{76950}{100}$

We have the final answer as

I = $ 769.50

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Step-by-step explanation:

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2 years ago

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alexgriva [62]

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2 years ago

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Anvisha [2.4K]

Answer:

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2 years ago

Match each expression written in standard form to the equivalent expression in factored form

den301095 [7]

Answer:

1. 15x^7y^2 + 4x^3 => x^3(15x^4y^2 + 4)

2. 15x^7y^2 + 3x => 3x(5x^6y^2 + 1)

3. 15x^7y^2 + 6xy => 3xy(5x^6y + 2)

4. 15x^7 + 10y^2 => 5(3x^7 + 2y^2)

Step-by-step explanation:

To obtain the answer to the question, first let us factorise each expression. This is illustrated below:

1. 15x^7y^2 + 4x^3

Common factor is x^3, therefore the expression is written as:

x^3(15x^4y^2 + 4)

2. 15x^7y^2 + 3x

Common factor is 3x, therefore the expression is written as:

3x(5x^6y^2 + 1)

3. 15x^7y^2 + 6xy

Common factor is 3xy, therefore the expression is written as:

3xy(5x^6y + 2)

4. 15x^7 + 10y^2

Common factor is 5, therefore the expression can be written as:

5(3x^7 + 2y^2)

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3 years ago