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3 years ago

A red apple has mass of 20 grams .you cut it into 5 slices. what about the aplles has changed ?

Mathematics

1 answer:

Nutka1998 [239]3 years ago

7 0

Well you have cut it into smaller pieces so it would be I guess 4 grams now because 20 divided by 5 is 4.

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The two-way frequency table below shows data on student behavior and the use of positive phone calls home as an incentive for go

dusya [7]

Answer:

From the frequency table, let's calculate the row total.

Row total for phone call = 19 + 9 = 28

Row total for no phone call = 8 +6 = 14

To calculate their respective row relative frequencies, let's use:

Row relative freq = $\frac{freq.}{Row total}$

Now, the two-way frequency table will be computed as:

For phone call:

Desirable behavior = $\frac{19}{28} = 0.67857$ ≈0.69

Undesirable behaviour = $\frac{9}{28} = 0.3214$ ≈0.32

No phone call:

Desirable behaviour = $\frac{8}{14} = 0.5714$ ≈ 0.57

Undesirable behaviour = $\frac{6}{14} = 0.4286$ ≈ 0.43

The complete two-way table is attached.

8 0

3 years ago

Kyra is using rectangular tiles of two types for a floor design. A tile of each type is shown below: Two rectangular tiles, rect

Rudiy27

Since there is no picture shown, I just plotted the given data points myself. That is shown in the attached picture. The blue rectangle is rectangle PQRS while the orange one is rectangle JKLM. I believe there are some choices for this question but you forgot to include. Nevertheless, I will give my observations from the given figure.

The tile PQRS is bigger than tile JKLM. A rectangle is a two-dimensional shape that has two sets of equal parallel planes. Thus, its area is equal to the length multiplied by its width.

tile PQRS = (9-5)*(12-7) = 20 units²
tile JKLM = (6-4)*(10-5) = 10 units²

Tile PQRS is larger by 10 units².

8 0

3 years ago

Use the formula to find the area use 3.14 for pie the circle is 15 cm

alexandr402 [8]

Hey there!

$A= \pi r^2$

By using this formula, we plug it in.

Your correct answer would be . . .

$A$ ≈ $\boxed{\boxed{706.86}}$

Hope this helps.
~Jurgen

5 0

3 years ago

The length of an instant message conversation is normally distributed with a mean of 5 minutes and a standard deviation of .7 mi

Charra [1.4K]

The <em><u>correct answer</u></em> is:

0.0764

Explanation:

We will use a z-score to answer this. The formula for a z-score is

$z=\frac{X-\mu}{\sigma}$ , where μ is the mean and σ is the standard deviation. Using our information in this problem, we have

$z=\frac{6-5}{0.7}=\frac{1}{0.7}=1.43$

Using a z-table, we look up the z-score 1.43. The area under the curve to the left of, or less than, this value is 0.9236. This means the probability that the time is greater than this is 1-0.9236 = 0.0764.

7 0

3 years ago

Read 2 more answers

Can anybody help me please

Mumz [18]

(_ , _) means (X , Y)

(25 , ) means

X = 25 then you need find the value of Y from the equation .

$y = \frac{1}{5} x - 8 \\ y = (\frac{1}{5} \times 25) - 8 \\ y = 5 - 8 = - 3$