Answer
<span>A. (3a − x)(2b + y)
cause
</span><span> (3a − x)(2b + y) = 6ab + 3ay -2bx -xy (expand by using distributive property)</span>
Answer:
Heather served 10 orders.
Felipe served 30 orders.
Jim served 50 orders.
What we know:
<u>Let's refer to each person by their first initial (H, J, & F)</u>
H + J + F = 90
F = 3 * H
J = 5 * H
Substitution:
<u>Let's replace F and J by their equivalents in relation to H (basically making the entire left side only H)</u>
H + (5 * H) + (3 * H) = 90
H + (5H) + (3H) = 90
9H = 90
H = 90/9
H = 10
Final Calculations
<u>Now that we know how many orders Heather served, we can calculate how many Jim and Felipe served</u>
F = 3 * H
F = 3 * 10
F = 30
J = 5 * H
J = 5 * 10
J = 50
5x + 3 = 38
5x = 38-3
5x = 35
x= 7
.......................................................
The top corner is 180-78=102°
Sum of the corners should be 180°, so
39+102+5z+4=180 => 5z = 180-145 => z=35/5=7°
my previous answer of 29 was indeed wrong!!!
sorry for that!!