Answer:
C
Step-by-step explanation:
Because you should be subtract each other by 20x to transfer from side to another side.
Let no red ribbons=x
no. Of blue ribbons=x+3
No. Of yellow ribb9ns=x+7
Totsl ribbons=28
28=x+x+3+x+7
28=3x+10
3x=28-10
3x=18
X=18/3
X=6
No .of red ribbons=6
No. Of blue ribbons=x+3=9
No. Of yellow ribbons=x+7=13
Answer:
a. 60
b. -32
c. 3598
d. -6
Step-by-step explanation:
all you have to do is plug in the numbers that are given to you for the missing variables and then solve it regularly.
6×7+2×3
5×(-18)÷3-2
(6×10)^2-10÷5
(1-3)(1+2)
SA = s2<span> + 2 × s × </span>l<span> Is the formula for the surface area of a square pyramid</span>
You would use the distance formula
Hope this helped
