30 miles/hour * x hours= 40 miles/hour * (x-4) hours
Distribute the 40, so you get
30x=40x-160
Subtract 40x from both sides
-10x=-160
Divide both sides by -10
x=16
They drove 16 miles
Answer:
x^2-x-12
Step-by-step explanation:
I used the box method its easier than foil method if that helps in the future
Rectangle and circle because 4/10 + 3/10 = 7/10
Answer:
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Step-by-step explanation:
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Answer:
520 girls attended the picnic
Step-by-step explanation:
Hello
step 1
Let
Homewood middle school total students=1200
A=unknown=total of girls
(2/3)A=total girls attended the picnic
B=unknown= total of boys
(1/2)B=total boys attended the picnic
step2
replace
Step 3
find A and B
from equation (1)
from equation (2)
total girls attended the picnic=(2/3)A=(2/3)780=520
520 girls attended the picnic