m = 5a
m + a = 30
Because we already know the value of m, we can find the value of a.
5a + a = 30
<em><u>Combine like terms.</u></em>
6a = 30
<em><u>Divide both sides by 6</u></em>
a = 5
Now that we know the value of a, we can find the true value of m.
m = 5a
m = 5 * 5
m = 25
Aisha is 5 years old, and Aisha's mother is 25 years old. (This is your answer.)
Answer:
$19.26
Step-by-step explanation:
18 + 7% of 18 dollars
= 18 + (7/100) * 18
= 18 + 1.26
= $19.26 I(answer)
Answer:
D. 9 meters
Step-by-step explanation:
AB = CD, so 9x-27=2x+1.
If you get like terms on the same side you get 7x=28
If you simplify by dividing everything by 7, you get x=4
If you plug 4 in as x into the expression 2x+1, you get 9.
If I'm reading this right, it should be 3.
5y² + 2xy – 20x - 100
Step-by-step explanation:
Assume that the distance between City A and City B is <em>x</em> miles,
& the speed of the plane from City A to B is<em> y </em>mph;
The return trip is 20 mph slower so the plane's speed is <em>(y – 20)</em> mph
Since <em>time = distance/speed;</em> The time taken by the plane from City A to B is <em>x / y</em> hrs.
The time taken in return flight is;
<em>x / (y - 20)</em> hrs
The layover was 5hrs long. Therefore the total time taken on the who return trip journey is;
x/y + x/(y-20) + 5
multiply each individual fraction with the LCM of the denominators
x(y-20) + xy + 5 y(y-20)
xy -20x +xy + 5y² – 100
5y² + 2xy – 20x - 100
