<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.
<u>Answer:</u>
Below!
<u>Step-by-step explanation:</u>
<u>We can solve this with the help of equations.</u>
- 5 + 2x = 2x + 6
- => -2x + 2x = -5 + 6
- => 0 ≠ 1
<u>Since we are getting 0 ≠ 1 as our result, the problem has </u><u>no solution.</u>
Hoped this helped.

Answer:
91.7 inches to 1 decimal place
Step-by-step explanation:
We will use Pythagoras's theorem to find the height of the pyramid.
The height of the Pyramid forms a right-angled triangle with half of the base and the slant height.
We can get half the length of the base by dividing the length of one side of the base = 20.4 by 2 = 10.2in
slant height = 92.3in
Therefore height = 
The height of the pyramid is 91.73inches to 1 decimal place
Answer:
Step-by-step explanation:
C(w) = 92w + 4000
w = 470
C(470) = 92*470 + 4000
C(470) = 43240 + 4000
C(470) = 47240