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Anni [7]
3 years ago
14

Charlie is x years old. His sister is 4 years younger than charlie. His mother's age is 3 times the quantity of her childrens ag

e. Write an expression to show his mothers age
Mathematics
1 answer:
Wittaler [7]3 years ago
6 0

Answer:

6x - 12

Step-by-step explanation:

In this question, we area asked to write an expression for a mother’s age given some information about the children’s age. We proceed as follows:

Charlie is x years old and his sister is 4 years younger. His sister’s age would be x -4. The total of both ages would be their addition and that is x + x - 4 = 2x - 4

Now, the mother’s age is 3 times this quantity.

Mathematically, that is 3(2x -4) = 6x -12

The expression of the mother’s age is (6x-12) years

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1. Solve for the variable in the following proportion.
Ugo [173]

Answer:

1. 3

3. 10

Step-by-step explanation:

1. Write a proportion by writing each ratio as a fraction and setting the fractions equal. A proportion is an equation where two ratios are equal to each other. Then cross multiply denominator and numerator of each fraction to solve.

\frac{n}{.5} = \frac{6}{1}\\  1*n = 0.5*6\\n = 3

2. Repeat same process as #1.

3. The ratio of girls to boys is 3:2. There are 15 girls. write a proportion to solve using b as the number of boys.

\frac{3}{2} = \frac{15}{b}\\  3*b = 2*15\\3b = 30 \\ b = 10

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7 0
3 years ago
Read 2 more answers
Please I need the polynomial for this problem, if you don’t know then don’t answer! Wrong answers will be reported
babymother [125]

Answer:

Area = (36π - 12πx + x²π) mm²

Step-by-step explanation:

Given that,

radius of lense = 6mm

Length from outer layer of pupil to lense = x mm

Radius of pupil = 6 - x mm

<h3>Formula to calculate area of pupil</h3><h3> Area = π r²</h3>

<em> where r is radius of pupil</em>

Area = π (6 -x)²

Area = π (6² -2(6)(x) + x²)

Area = π (36 -12x +x²)

Area = (36π - 12πx + x²π) mm²

So, the polynomial in standard form that represent the area of pupil in terms of π =  (36π - 12πx + x²π) mm²

5 0
3 years ago
Please help me!
seraphim [82]

Answer:

7.5%

Step-by-step explanation:

one year has 12 months...and <em>in</em><em> </em><em>one</em><em> </em><em>mo</em><em>nth</em><em> </em><em>the</em><em> </em><em>person</em><em> </em><em>saves</em><em> </em><em>2</em><em>0</em><em>0</em><em> </em>

<em>so</em><em> </em><em>in</em><em> </em><em>one</em><em> </em><em>yea</em><em>r</em><em> </em><em>it</em><em> </em><em>wi</em><em>ll</em><em> </em><em>be</em><em> </em><em>2</em><em>0</em><em>0</em><em>×</em><em>1</em><em>2</em><em> </em><em>=</em><em> </em><em>2</em><em>4</em><em>0</em><em>0</em>

<em>%</em><em>s</em><em>a</em><em>v</em><em>e</em><em>=</em><em>tota</em><em>l</em><em> </em><em>saves</em><em>/</em><em>tota</em><em>l</em><em> </em><em>earni</em><em>ng</em><em>×</em><em>1</em><em>0</em><em>0</em>

<em>=</em><em> </em><em>(</em><em>2</em><em>4</em><em>0</em><em>0</em><em>/</em><em>3</em><em>2</em><em>0</em><em>0</em><em>0</em><em>)</em><em>×</em><em>1</em><em>0</em><em>0</em><em> </em><em> </em><em>=</em><em> </em><em>7</em><em>.</em><em>5</em><em>%</em>

<em>I </em><em>hop</em><em>e</em><em> this</em><em> will</em><em> help</em><em>!</em>

4 0
2 years ago
Read 2 more answers
Please can anyone help
Lina20 [59]

Answer:

the answer is third one.......

5 0
3 years ago
Research suggests that high school students could benefit from later school starting times. A school administrative team is cons
zhuklara [117]

Answer:

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Step-by-step explanation:

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