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3 years ago

Why are 4/10 and 4/100 not equal?

1 answer:

6 0

The same reason 4 dimes and 4 pennies aren't equal.

To put it into decimal terms, 4/10 is 0.40 (or forty cents), whereas 4/100 is 0.04 (or four cents)

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Find the slope of a line parallel to the line through the given points p(-2,4) q(6,-2)

olchik [2.2K]

Answer:

(-2-4)/(6+2)= -6/8= -3/4

8 0

3 years ago

Read 2 more answers

Will literally make BRAINLIEST and marry you if you do this for me

Tanya [424]

Answer:

0.44

Step-by-step explanation:

See the picture below.

Remember that the sine is the ratio of the length of the opposite leg to the length of the hypotenuse.

Perhaps you know SOHCAHTOA, where SOH means sine, opposite, hypotenuse.

For angle J, leg LK is the opposite leg.

The hypotenuse of the triangle is the side opposite the right angle, teh angle of 90°, which is angle L, so the hypotenuse is side KJ.

$\sin J = \dfrac{opposite~leg}{hypotenuse}$

$\sin J = \dfrac{39}{89}$

$\sin J = 0.43820...$

Answer: 0.44

6 0

2 years ago

Calculate the length of the circumference of a circle with diameter of 7cm

Bad White [126]

The circumference of the circle is given by the equation C = pi * D. Incorporating the length of the diameter into the equation, we have,

C = pi * D

C = pi * 7cm

C = 21.99 cm

8 0

3 years ago

A distance AB is observed repeatedly using the same equipment and procedures, and the results, in meters, are listed below: 67.4

skad [1K]

Answer:

a) $\bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401$

b) The sample deviation is calculated from the following formula:

$s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And for this case after replace the values and with the sample mean already calculated we got:

$s=0.0036$

If we assume that the data represent a population then the standard deviation would be given by:

$\sigma=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And then the deviation would be:

$\sigma =0.00319$

Step-by-step explanation:

For this case we have the following dataset:

67.401, 67.400, 67.402, 67.396, 67.406, 67.401, 67.396, 67.401, 67.405, and 67.404

Part a: Determine the most probable value.

For this case the most probably value would be the sample mean given by this formula:

$\bar X =\frac{\sum_{i=1}^n X_i}{n}$

And if we replace we got:

$\bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401$

Part b: Determine the standard deviation

The sample deviation is calculated from the following formula:

$s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And for this case after replace the values and with the sample mean already calculated we got:

$s=0.0036$

If we assume that the data represent a population then the standard deviation would be given by:

$\sigma=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And then the deviation would be:

$\sigma =0.00319$

3 0

3 years ago

2x – 5 = 7 to 2x = 12 What property of equality was used?

kakasveta [241]

Property of Addition and division.

6 0

3 years ago