Y/x = 7/2
Cross multiply.
2y = 7x
Solve for y.
y = 7/2x
C) The slope of the line is 7/2
D) The y intercept is 0
Answer:
Step-by-step explanation:
Each gallon of gas is used on 23.5 miles. So if you think about it, if Camila drives her car yy miles and uses xx amount of gas, just multiply 23.5 x yy and that will get you your answer!
Total miles = 70 + 70 = 140 miles
Total time = 140 miles / 57 mph = 2.456 hours
Time 1: 70 miles / 70 mph = 1 hour
Time 2: 70 miles / x mph
Total time = time 1 + time 2:
2.456 = 1 hour + 70/x
Subtract 1 hour from both sides:
1.456 = 70x
multiply both sides by x:
1.456x = 70
Divide both sides by 1.456:
x = 70/1.456
x = 48.0769 miles per hour
Rounded to 2 dp = 48.08 miles per hour
Answer: Choice A
![\sqrt[4]{3^3}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B3%5E3%7D)
The fourth root of 3^3
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Explanation:
The exponent of 1/4 means "fourth root", so,
![3^{1/4} = \sqrt[4]{3}](https://tex.z-dn.net/?f=3%5E%7B1%2F4%7D%20%3D%20%5Csqrt%5B4%5D%7B3%7D)
The outer exponent 3 can be moved inward like this
Then we can use the rule
![x^{m/n} = \sqrt[n]{x^m}](https://tex.z-dn.net/?f=x%5E%7Bm%2Fn%7D%20%3D%20%5Csqrt%5Bn%5D%7Bx%5Em%7D)
This means
![3^{3/4} = \sqrt[4]{3^3}](https://tex.z-dn.net/?f=3%5E%7B3%2F4%7D%20%3D%20%5Csqrt%5B4%5D%7B3%5E3%7D)
Answer:
B
Step-by-step explanation:
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