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Alina [70]
3 years ago
7

Suppose y varies jointly as x and z. Find y when x = 2 and z = 11, if y = 160 when x = 3 and z = 8. Round your answer to the nea

rest hundredth, if necessary.
Mathematics
1 answer:
defon3 years ago
7 0
Step 1– y=kxz
160=k(3)(8)
160=k(24)
24/160=(k)24/24
6.667=k

Step 2– y=kxz
y=(6.667)(2)(11)
y=146.67
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s=42

Step-by-step explanation: 126 divided by 3 = 42

42mph

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Tv originally cost $400 if the price of the TV increase by 15% what is the new price ​
Verizon [17]

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Step-by-step explanation:

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3 years ago
Explain why if a runner completes a 6.2â-mi race in 32 âmin, then he must have been running at exactly 11 âmi/hr at least twice
MA_775_DIABLO [31]

Answer:

Accelerating to top speed, deaccelerating to finish line.

Step-by-step explanation:

If the runner kept a constant speed of 11 mph for the whole duration of his run (32 minutes), the distance he would have covered is:

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This means that, in order to run the full 6.2 miles, the runner needs to reach a speed over 11 mph. Assume he starts from rest, while accelerating the runner reaches, and the surpasses, the 11 mph mark. Since his speed at the finish line is zero, the runner has to deaccelerate from his current running speed (which should be higher than 11 mph), passing through 11 mph and reaching zero at the finish line.

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3 years ago
According to the Empirical Rule, what percentage of a normal population falls between 1 standard deviations left of the mean and
svlad2 [7]

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68% of the data falls within one standard deviation, 95% percent within two standard deviations, and 99.7% within three standard deviations from the mean.

Step-by-step explanation:

6 0
3 years ago
Evaluate 0.53n+5 when n=3 and when n=-3
melomori [17]
<span>0.53(3)+5 = 1.59 + 5 = 6.59 when n = 3
</span>0.53(-3)+5 = -1.59 + 5 = 3.41 when n = -3
4 0
3 years ago
Read 2 more answers
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