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2 years ago

Different ways to show subtraction for a problem like 32 - 15

Mathematics

1 answer:

chubhunter [2.5K]2 years ago

8 0

15-32= 32-15= 32 -15 15 -32

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Really really need this answer. Please help!

scZoUnD [109]

Use the cosine function.

cos x = 2/12
cos x = 0.167

use the inverse of cosine:

x = 80.405

The answer is C.

Hope this helps :)

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2 years ago

Help me <br>ans should be well explained

Katen [24]

Finding diagonal sum

$\\ \sf\longmapsto 0.7+1.0+1.3$

$\\ \sf\longmapsto 0.7+2.3$

$\\ \sf\longmapsto 3.0$

Observing the square

x=0.9
y=0.6

$\\ \sf\longmapsto xy=0.9(0.6)$

$\\ \sf\longmapsto xy=0.54$

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2 years ago

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If the standard deviation of a set of data is zero, what can you conclude about the set of values? The sum of the deviations fro

Rashid [163]

Answer:

All values are identical.

Step-by-step explanation:

We are given the following in the question:

If the standard deviation of a set of data is zero.

Then, all the values in data are identical.

This can be shown as:

Let all the terms in data be x.

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{nx}{n} = x$

Sum of squares of differences =

$\displaystyle\sum (x_i - x)^2 = 0$

$\sigma = \sqrt{\frac{0}{n}} = 0$

Thus, the correct answer is

All values are identical.

3 0

3 years ago

Solve for h, if the given equation is: s=2πr^2+2πrh solve

dolphi86 [110]

First isolate the group with h in it
minus 2pir^2 from both sides
s-2pir^2=2pirh
divide both sides by 2pir
(s-2pir^2)/(2pir)=h

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2 years ago

How does a good posture and the right position help you in volleyball?

Natali5045456 [20]

Answer:

In a proper volleyball ready position, the knees are bent, the hands are out in front of the player at waist level and just outside the knees, and the player's weight is balanced forward.

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2 years ago

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