Each student would need to raise $27.56
Answer:
Correct answer is A 357,5
Step-by-step explanation:
Step-by-step explanation:
the slower plane traveled x miles in 4 hours.
the faster plane traveled x + 4×80 = x + 320 miles in 4 hours.
so,
x + x + 320 = 3800 miles
2x =3480 miles
x =1740 miles (in 4 hours) .
that means the slower plane's speed was 435 mph.
and the faster plane's speed was 435 + 80 = 515 mph.
Multiply the second row by -1 to cancel out the 7x.
9x+7y=10
-7x-7y=-14
2x=-4
x=-2
9(-2)+7y=10
-18+7y=10
7y=28
y=4
9514 1404 393
Answer:
- distributive property
- subtraction property
- addition property
- division property
Step-by-step explanation:
1. The parentheses are eliminated. The distributive property lets you do that.
2. 2x is subtracted from both sides. The subtraction property of equality lets you do that.
3. 28 is added to both sides. The addition property of equality lets you do that.
4. Both sides are divided by 2. The division property of equality lets you do that.
