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castortr0y [4]
3 years ago
7

A police officer earned $932 a week last year. What was his yearly salary?

Mathematics
1 answer:
zimovet [89]3 years ago
8 0
932 multiply the # of weeks in a year which is 1 year = 52 weeks
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I don’t know how to do this
Jet001 [13]

Use proportions because we know that the triangles are similar.

\frac{20}{28}=\frac{5}{x}

Cross multiply.

20x=28×5

x=7

answer: 7

6 0
3 years ago
A sample of radium has a weight of 1.5 mg and a half-life of approximately 6 years.
pogonyaev

Answer:

0.75 mg

Step-by-step explanation:

From the question given above the following data were obtained:

Original amount (N₀) = 1.5 mg

Half-life (t₁/₂) = 6 years

Time (t) = 6 years

Amount remaining (N) =.?

Next, we shall determine the number of half-lives that has elapse. This can be obtained as follow:

Half-life (t₁/₂) = 6 years

Time (t) = 6 years

Number of half-lives (n) =?

n = t / t₁/₂

n = 6/6

n = 1

Finally, we shall determine the amount of the sample remaining after 6 years (i.e 1 half-life) as follow:

Original amount (N₀) = 1.5 mg

Half-life (t₁/₂) = 6 years

Number of half-lives (n) = 1

Amount remaining (N) =.?

N = 1/2ⁿ × N₀

N = 1/2¹ × 1.5

N = 1/2 × 1.5

N = 0.5 × 1.5

N = 0.75 mg

Thus, 0.75 mg of the sample is remaining.

5 0
3 years ago
In your own words, explain the concept of a variable. Discuss how you can teach a class about the use of variables and how they
vesna_86 [32]

VARIABLE is a symbol which is used for representation in a  math.

According to the statement

we have to explain about the what is a variable.

So, VARIABLE is a symbol which is used for representation in a  math.

It represent the so many things like Algebra, Matrix,Vector etc. and also so many things.

A variable may also be called a data item.

It is used to represent a data like country name, name, age, date of birth etc.

we know that the every thing is changeable. So, like ther things variables are also changeable.

The changing of variable parameters is called as variation. In problems relating to two or more variables, it is seen that the value of a variable changes with the change in the value.

So, VARIABLE is a symbol which is used for representation in a  math.

Learn more about VARIABLE here brainly.com/question/1295072

#SPJ4

8 0
1 year ago
NEED HELP PLEASE!!!!
Masja [62]

Answer:

Yes

Step-by-step explanation:

\sqrt{\frac{2x}{9} }={\frac{\sqrt{2x} }\sqrt{} {9} }  =\frac{\sqrt{2x} }{3}=\frac{1}{3}\sqrt{2x}

3 0
2 years ago
A mom with four children decided she wanted to control how to divide up the amount of Halloween candy collected. She combined al
vesna_86 [32]

Answer:

201

Step-by-step explanation:


6 0
3 years ago
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