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3 years ago

3

Mathematics

1 answer:

kiruha [24]3 years ago

8 0

Easy

$\frac{11}{25} \times 100 = \frac{11}{25} \times 25 \times 4 \\$

$= 11 \times 4 = 44 \: \: percent$

So %44 of your class students chose pizza.

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As she drove down the icy Road Miss Campbell slammed on her breaks her car did a 360 explain what happened to her car

meriva

Answer:

The friction that the car usually uses to stop(a rough and hard ground) was null and void, so the car spun uncontrollably.

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3 years ago

All rhombus have all sides that are equal in length but which one are rhombus or not. Need help on this.

Artyom0805 [142]

Answer:

I think that the first one is not a rhombus but the last two are.

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3 years ago

The following are the last 7 days adjusted closing stock prices (in $) for Citigroup: 22, 25, 20, 15, 40, 55, 28 A) Compute the

son4ous [18]

Answer:

(A) The 25th percentile is 20.

(B) The mean of the data set is 20 and the median of the data set is 25. The data set is left-skewed.

Step-by-step explanation:

The data set arranged in ascending order is:

S = {15, 20, 22, 25, 28, 40, 55}

(A)

Compute the 25th percentile as follows:

$25^{th} \text{Percentile}=[\frac{n+1}{4}]^{th}obs.\\\\=[\frac{7+1}{4}]^{th}obs.\\\\=2^{nd}obs.\\\\=20$

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(B)

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Compute the median as follows:

For a set with odd number of observations, the median value if the middle value.

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Thus, the mean of the data set is 20 and the median of the data set is 25.

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3 years ago

Rin spends $20 every week on drum lessons.

mihalych1998 [28]

Answer:

A, B, D and F.

Step-by-step explanation:

Rin spends $20 every week on drum lessons.

If:

d = total amount of dollars Rin spends

w = number of weeks

Then: d=20w

w is the independent variable while d is the dependent variable. A change in w will lead to a change in d. Therefore:

(A)The independent variable causes a change in the dependent variable.

(B)The equation is d = 20w.

From the equation: d=20w

When w=1, d=$20

When w=2, d=$40

When w=3, d=$60

When w=4, d=$80

This tallys with the values in Option F.

Therefore:

(D)As the number of weeks increases, the total dollars Rin spends increases.

The correct options are: A, B, D and F.

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3 years ago