22.5 miles per hour, and in three hours he will have traveled a total of 67.5 miles
C=15+3. Combine like terms. C=18.
1 foot 8 inches.
1 foot = 12 inches.
1 foot 8 inches = 1 foot + 8 inches = 12 inches + 8 inches = 20 inches.
He cuts into 4 equal pieces.
= 20 / 4
= 5 inches.
<span>Each piece would be 5 inches long.</span>
I'll solve 21, and you then should be able to solve the rest on your own!
Since ADC is 135, that means that that whole angle is 135 degrees. In addition, since angles ADB and BDC add up to ADC, we get ADB+BDC=ADC=135=11x+9+7x=18x+9. Subtracting 9 from both sides, we get 126=18x. Dividing both sides by 18, we get x=7. Plugging that into 11x+9=BDC, we get 11*7+9=77+9=86
