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Igoryamba
2 years ago
5

Gary is 25 years old. That is 7 more than

Mathematics
1 answer:
SpyIntel [72]2 years ago
5 0

Answer:

2<em>x </em>+ 7 = 25

<em>x </em>= 7

Step-by-step explanation:

Gary: 25

Sean: <em>x</em>

----------------------------

Let's break down the sentence into mathematical terms

Gary <u>is</u> 25 years old. That <u>is</u> 7 more than twice <u>Sean's age.</u>

In math, is means equal to. It is represented with an equal sign (=)

Gary = 25. 25 = 7 more than twice <u>Sean's age.</u>

7 more is represented by 7 +

Gary = 25. 25 = 7 + than twice <u>Sean's age.</u>

Twice means double which is 2 ·

Gary = 25. 25 = 7 + 2 · <u>Sean's Age</u>

<u>Sean's Age</u> will be represented by <em>x</em>

Gary = 25. 25 = 7 + 2<em>x</em>

We don't need it to say<em> "Gary = 25" </em>in our equation.

25 = 7 + 2<em>x</em>

Let's rewrite it with the associative property.

2<em>x </em>+ 7 = 25

---------------------

Now, solve

2<em>x </em>+ 7 = 25

<em>-7           -7</em>

2<em>x</em> = 18

<em>÷</em><em>2  </em><em>÷</em><em>2</em>

<em>x </em>= 7

----------------------

Sean is 7 years old.

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Which property of real numbers is illustrated by the equation 52+(27+35= (52+27) +36?
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The answer is b associative property
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Trey has a bookcase with 8 shelves. Each shelf has 40 books. How many books are in the bookcase
Dmitry_Shevchenko [17]

Answer:

8x40=320

Step-by-step explanation:

6 0
2 years ago
How many questions would I have to miss on a 25 question test to get 88% ?
N76 [4]
Let's start with the question, how many questions do you need to get 88%?

so were are looking for
?/25 = 88% and 88% is also 0.88 so we can multiply 25 by 0.88

we get 22


But this doesn't here. the question asks us how many mistakes do you need. you can just subtract 22 from 25

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7 0
3 years ago
Assume that cigarettes cost $7 per pack and consider a 21 year old college student smoker who smokes 15 packs of cigarettes per
stepladder [879]

Answer:

The answer is $57657.6

Step-by-step explanation:

First, you must determine the amount of money the student saves per month. To do this, the number of cigarette packages she smokes is multiplied by the price she pays for them.

<u><em>Per month:</em></u> 15 packs*$7 each packet=<em>$105</em>

This means that per month she save $ 105.

Now you must determine the amount of money saved per year, knowing that in a year there are 12 months. Therefore, you make a simple rule of three: If in a month you save $ 105, how much money do you save in 12 months?

<em>Per year:</em> \frac{105*12months}{1 month} =1260

This means that per year she save $ 1260. And she each month invests the amount she would have spent on cigarettes in a savings plan that averages a 4% annual return. This means that in addition to saving $ 1260 per year, she gets 4% annually. For this you must first know how much 4% equals. For that you must keep in mind that to obtain a percentage in decimals, you must divide by 100. Then 0.04 represents 4%.

Now, to get the annual return of the savings plan you multiply the percentage by the amount invested in the plan. And to determine the total amount of money she save in a year with this plan, you add the amount invested plus the annual return. All this is:

0.04*$1260+$1260=$1310.4

<em>This means that finally per year she save $ 1310.4 with the annual return.</em>

You know that between 65 and 21 years of age of the student, there is a difference of 44 years, obtained by calculating 65 years minus 21 years. Then you can make a simple rule of three to determine the amount of money saved during those 44 years:if in one year the student save $1310. 4, how much money do she save in 44 years?

\frac{1310.4*44 years}{1 year} =57657.6

So, finally, <u><em> she will have saved $ 57657.6 by the time she is 65</em></u>

<u><em /></u>

5 0
3 years ago
Do you guys watch 7 deadly sins i love it
Vika [28.1K]
No I haven’t but I will put it in my recommendations :)
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3 years ago
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