Use PEMDAS.
17-(6×10÷2)+12
6×10=60 divide by 2 to get 30
now: 17-30+12
17-30=-13
-13+12=-1
Answer:
Blue
Step-by-step explanation:
28A + 17C = 6010
A = 160
28(160) + 17C = 6010
4480 + 17C = 6010
17C = 6010 - 4480
17C = 1530
C = 1530/17
C = 90...so there were 90 children that attended
Answer:
40% solution = 20 gallons
80% solution = 60 gallons
Step-by-step explanation:
x = gallons of 40% solution
y = gallons of 80% solution
Total volume is:
x + y = 80
Total amount of fertilizer is:
0.40 x + 0.80 y = 0.70 (80)
Solve by substitution.
0.40 x + 0.80 (80 − x) = 0.70 (80)
0.40 x + 64 − 0.80 x = 56
0.40 x = 8
x = 20
y = 60
? must be equal 0 <span>in order for this polynomial to be expressed as a difference of squares
x^2 - 36
= x^2 - 6^2
=</span><span>(x + 6)(x - 6)</span>