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denis-greek [22]
3 years ago
7

Verda used a sensor to measure the speed of a moving car at different times. At each time, the sensor measured the speed of the

car in both miles per hour and kilometers per hour. The table below shows her results.
Based on her results, which statement describes the relationship between m, the speed of the car in miles per hour, and k, the speed of the car in kilometers per hour?



Select one:
A(The relationship is proportional because the ration of m to k is constant
B(The relationship is not proportional because the ratio of m to k is constant
C(The relationship is proportional because the difference between m and k is constant
D(The relationship is not proportional because the difference between m and k is constant
Mathematics
1 answer:
ValentinkaMS [17]3 years ago
4 0

Answer:

b is the awnser

Step-by-step explanation:

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For every quarter he spends, Reggie receives 50 food pebbles to feed the fish. Reggie has thrown 350 food pebbles into the fish
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Answer:

7 quarters are spent for throwing 350 food pebbles in pond.

Step-by-step explanation:

Given:

Reggie receives 50 food pebbles for every quarter he spends.

Number of food pebbles he has = 350

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Now, using proportion and cross multiplication method, we can find 'x'.

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Consider the function f given by f(x)=x*(e^(-x^2)) for all real numbers x.
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Answer:

\frac{\sqrt{\pi}}{4}

Step-by-step explanation:

You are going to integrate the following function:

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\int_0^{\infty}e^{-x^2}=\frac{\sqrt{\pi}}{2}

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furthermore you use the fact that:

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\int_0^{\infty}x^2e^{-x^2}dx=\frac{(2(1)-1)!}{2^{1+1}(1^1)}\sqrt{\pi}=\frac{\sqrt{\pi}}{4}

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