I believe that x=9. I used cross multiplication. First, I multiplied 6 by 15. Second, I divided this product of 90 by 10. The quotient is 9.
Answer:
Step-by-step explanation:
Remark
2 angles are complementary means that 2 angles add up to 90°. That is the guiding princeple behind the problem.
Givens
Let the smallest angle = x
Let the largest angle = 4x + 30
Equation
4x + 30° + x = 90° Combine like terms on the left
Solution
5x + 30 = 90 Subtract 30 from both sides.
5x + 30 - 30 = 90 - 30 Combine
5x = 60 Divide both sides by 5
5x/5 = 60/5
x = 12
Answer
- smallest angle = 12
- Larger angle = 4*12 + 30 = 78
Yes, seven shirts a group
Answer:
Step-by-step explanation:
Let t represent the time driving at 50 mi/h. Then her total distance driven (in miles) is ...
distance = speed · time
290 = 50t + 45(6-t)
20 = 5t . . . . . . . . . . . subtract 270, collect terms
4 = t . . . . . . divide by the coefficient of t
Taylor drove 4 hours at 50 miles per hour, then 2 hours at 45 miles per hour.