Which equation represents a direct linear variation?

Mathematics

2 answers:

kvasek [131]3 years ago

7 0

No don't pleeeeeeassssseeer

ss7ja [257]3 years ago

4 0

equation y =1/3 x is a direct variation

You might be interested in

How many positive integers are between 3/2 and 21/4 ? A : 2 B : 3 C : 4 D : 5

kvasek [131]

Answer:

4 integers

Step-by-step explanation:

We are given with two fractions

3/2 = 1.5 and 21/4 = 5.25

Let us draw a number line first and then we plot these two numbers on them.

Please refer to the picture attached. Here we see the number line in black line , where the integers are starting with 0. We have plotted the numbers 1.5 and 5.25 in red.

We are asked to determine the number of integers that lies between 1.5 and 5.25.

The definition of integer says , the whole numbers which be negative also including 0.

Hence we can see that there are 4 whole numbers between 1.5 and 5.25 ,

2,3,4,5

Hence our answer is 4 integer

5 0

4 years ago

he length of time to perform an oil change at a certain automobile repair shop is ap-proximately normally distributed with mean

Simora [160]

Answer:

56.75% probability that a mechanic can complete 16 oil changes in an eight-hour day

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 29.5, \sigma = 3$