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2 years ago

12

What is the simplest ratio

1 answer:

Zielflug [23.3K]2 years ago

4 0

The simplest ratio is 2:3.

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What is the solution? 2/3(x-7)= -2

koban [17]

Answer:

x =4

Step-by-step explanation:

2/3(x-7)= -2

Multiply each side by 3/2 to clear the fractions

3/2 * 2/3(x-7)= -2 *3/2

x-7 = -3

Add 7 to each side

x-7+7 = -3+7

x =4

3 0

2 years ago

The half-life of a certain substance is 20 years. How much of a 100 gram sample will be left after 20 years?

cluponka [151]

$\bf \textit{Amount for Exponential Decay using Half-Life} \\\\ A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &100\\ t=\textit{elapsed time}\dotfill &20\\ h=\textit{half-life}\dotfill &20 \end{cases} \\\\\\ A=100\left( \frac{1}{2} \right)^{\frac{20}{20}}\implies A=100\left( \frac{1}{2} \right)^1\implies A=50$

5 0

2 years ago

Read 2 more answers

Who is correct jo or alex

REY [17]

Neither Alex nor Jo are correct, because surface area is a 2-dimensional quantity, so it would be given in just square units, not linear nor cubic.

So the answer is D

8 0

2 years ago

Carl is shipping a cardboard box that is a rectangular prism. The net of the box is 10 in 6 in 4in. What is the area of the box?

sweet [91]

If by area you mean surface area then the answer is 248 square inches but if you mean volume the answer is 240 cubed inches.

6 0

2 years ago

You are taking a multiple-choice test that has six questions. Each of the questions has three answer choices, with one correct a

Nostrana [21]

Answer:

729 ways

Step-by-step explanation:

Given

Number of questions = 6

Choices = 3

Required

Number of ways of answering the questions

For each of the 6 questions;

There are 3 possible ways of selecting an answer;

The possible ways for the 6 questions is:

$Possible\ Ways = 3 * 3 * 3 * 3 * 3 * 3$

$Possible\ Ways = 729$

<em>Hence, there are 729 ways of answering the question</em>

4 0

3 years ago