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2 years ago

Jose is purchasing 4 dress shirts that cost $28 each and 2 pairs of pants that costs

Mathematics

1 answer:

marta [7]2 years ago

5 0

28 / 4 will get the unit rate for dress shirts but you have to tell the costs of the pairs of pants

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At a fruit stand, for every 5 apples sold there are 4 oranges sold. What is the ratio of oranges sold to apples sold?

Mashcka [7]

The ratio of oranges to apples would be 4 to 5, because every 5 apples sold, 4 oranges are sold, and we must put it oranges to apples.
Hope this helps!

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2 years ago

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Which value if x makes this proportional true? 14/20=56/x A.x=62 B.x=70 C.x=80 D.x=100

Leya [2.2K]

<h3>Answer: C) x = 80</h3>

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Work Shown:

Let's cross multiply to get the following

14/20 = 56/x

14*x = 20*56

14x = 1120

x = 1120/14

x = 80

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As a way to check the answer, we can type 14/20 - 56/80 into the calculator and we should get 0. I'm taking advantage of the rule that if A = B, then A-B = 0. This trick is handy to check if two sides of any equation are equal to one another.

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2 years ago

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I NEED HELP ASAP !! IF YOU ANSWER WITHOUT ACTUALLY ANSWERING AND ONLY FOR POINTS YOU WILL BE REPORTED!!

Kipish [7]

Answer:

D for the first one and the second one

Step-by-step explanation:

i learned this trust me

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2 years ago

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Which function in Excel is used to perform a test of independence? a. T.TEST b. CHISQ.TEST c. NORM.S.DIST d. Z.TEST

denis23 [38]

Answer:

b. CHISQ.TEST

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

The statistic is given by:

$\chi^2 = \sum_{i=1}^n \frac{(O_i-E_i)^2}{E_i}$

In order to calculate the p value we need to have in count the degrees of freedom , on this case $df=(rows-1)(#cols-1)$ . And we can calculate the p value would be given by:

$p_v =P(\chi^2 >\chi^2_{calc})$

But the correct comand is given by:

b. CHISQ.TEST(Actual range, Expected range)

We just need to put in one column the Observed values and in other the expectec values.

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2 years ago

Determine whether the data described are qualitative or quantitative. The maximum speed limit on interstate highways.

dalvyx [7]

The answer is B: Quantitative

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2 years ago