All categories

2 years ago

PLEASE HELP ME!!!

Mathematics

1 answer:

Fynjy0 [20]2 years ago

6 0

<h3>Answer: 15 years old</h3>

=============================================

Explanation:

m = Maggie's age (some positive whole number)

4m = four times her age

4m-7 = seven years younger than 4m = brother's age

Add up her age (m) and her brother's age (4m-7) to get a sum of 68.

m+(4m-7) = 68

5m-7 = 68

5m = 68+7

5m = 75

m = 75/5

m = 15

Maggie is currently 15 years old.

Her brother is currently 4m-7 = 4*15-7 = 60-7 = 53 years old.

Their current year ages add to: 15+53 = 68 which confirms the answer.

You might be interested in

Could you give me an example of a linear equation with a variable on both sides of the equal sign? Please don't look one up. You

lisov135 [29]

Answer:

4x + 6 = x

5x + 8 = x

6 0

3 years ago

Read 2 more answers

I needddd helppppp. . . . . .

tankabanditka [31]

Answer:

F. 5:4

Step-by-step explanation:

Solve for a and c to find the ratio of a to c:

2a = 3b
a = 3/2(b)
6b = 5c
c = 6/5(b)

Now, we can use the value of a and c to find the ratio of a to c:

(3/2(b))/(6/5(b))
3b/2 × 5/6b
15b/12b
5/4

F. 5:4 is the correct answer

8 0

3 years ago

Please HELP, ASAP!

Natasha_Volkova [10]

Idk u tell me cause im not the one

3 0

3 years ago

Taryn collected data for the rain collected over a number of days in various cities. Which of the data sets represents a scatter

garri49 [273]

Answer:

Step-by-step explanation:

5 0

3 years ago

If a/4 = 9/a, then<br> a²=36<br> 4a = 9a<br> a + 4 = 9 + a<br> a - 4 = 9 - a

Anna [14]

Answer:

Option A is correct.

The given expression : $\frac{a}{4} = \frac{9}{a}$ then;

$a^2 = 36$

Step-by-step explanation:

Given the expression: $\frac{a}{4} = \frac{9}{a}$

Cross multiplication the given expression following steps are as follow;

Multiply numerator of the left-hand fraction by the denominator of the right-hand fraction

Also, Multiply numerator of the right-hand fraction by the denominator of the left-hand fraction.

then, set the two products equal to each other.

Using cross multiplication, on the given expression;

$\frac{a}{4} = \frac{9}{a}$

First multiply the numerator of the left hand fraction(i.e,a ) by the denominator of the right hand fraction (i,e a)

we have;

$\frac{a \times a}{4} = 9$

Simplify:

$\frac{a^2}{4} =9$ [1]

now, multiply numerator of the right-hand fraction( i.e, 9) by the denominator of the left-hand fraction (i.e, 4 ) in [1]

we have;

$a^2 = 9\times 4$

Simplify:

$a^2 = 36$

Therefore, the given expression is equal to: $a^2 = 36$

6 0

3 years ago

Read 2 more answers