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3 years ago

If a 100 pound weight is lifted 5 feet off the ground, how much work is done?

Mathematics

1 answer:

IgorC [24]3 years ago

4 0

Isn’t it B 500 foot pounds

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PLEASE HELP ASAP DUE IN 3 MINUTES

Inga [223]

Answer:

1728 in²

Step-by-step explanation:

For the area of B, you need to find the length and width (height and base, whatever you want to call it).

For the height, you would need to do: 144 - 36 - 24 - 36 = 48 inches

For the base, you would need to do: 60 - 24 = 36 inches

Now you multiply the base and height to get the area: 48 x 36 = 1728 in²

7 0

2 years ago

7. Find mDBC. 6. Find mŁABD.

Romashka-Z-Leto [24]

ABD: 22
DBC: 109

they are congruent angles

8 0

2 years ago

If we wanted to create a new 90% confidence interval from a different sample for the proportion of those with a two on one date

slava [35]

Answer: 271

Step-by-step explanation:

The formula we use to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

, where $z_{\alpha/2}$ is the two-tailed z-value for significance level of $(\alpha)$

p = prior estimation of the proportion

E = Margin of error.

If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2$

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2$

Given : Margin of error : E= 0.05

Confidence level = 90%

Significance level $\alpha=1-0.90=0.10$

Using z-value table , Two-tailed z-value for significance level of $0.10$

$z_{\alpha/2}=1.645$

Then, the required sample size would be :

$n=0.25(\dfrac{1.645}{0.05})^2$

Simplify,

$n=270.6025\approx271$

Hence, the required minimum sample size =271

3 0

3 years ago

Explain determination ......??

kolezko [41]

Determination is your will power of doing something. Someone who is determined has the firmness of purpose and the resolve to achieve a goal.

Synonyms:

resolution, resolve, resoluteness, character.

Antonyms:

weak-mindedness, pusillanimity.

3 0

2 years ago

Read 2 more answers

Which statements are true from the graph ? Check all that apply:

Flura [38]

The statements that are true from the graph are:

The line is horizontal
The line goes through (4, 4 )
The y- values are all 4

<h3>Calculations and Parameters</h3>

Given the graph, we can note some things:

There is a line with a slope of zero.
This is a horizontal line parallel to the x-axis.
The equation of the line is y = c

c is the value of the y- coordinates the line passes through.

The line passes through (0, 4 ) with a y- coordinate of 4

Therefore, the equation of the line of y= 4