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2 years ago

If a student applied force 36N on a bench and it displaced by 4 m how much work did that student do

Mathematics

2 answers:

MAVERICK [17]2 years ago

8 0

<h3>Answer: 144 Joules </h3>

Steps Shown:

Work = Force * Displacement

Work = (36 Newtons)*(4 meters)

Work = (36*4) Newton meters

Work = 144 Newton meters

Work = 144 Joules

Note: The displacement must point in the same direction as the force applied.

castortr0y [4]2 years ago

5 0

Answer:

The answer is 144

Step-by-step explanation:

Work Done = Force × Distance

W= F×D

F= 36N

D= 4m

W= 36×4

W= 144j

N/B The workdone is always in Joules.

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Evaluate the following expression when x = 3 and y = 4:

JulijaS [17]

I don't understand. What are the values given? Are they values of an x,y plot?
If you plot them they are a straight line with y =6x - 2.9 but I don't know what you mean by when x=3 and y = 4?

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3 years ago

a woman earned wages of $34,600, received $1500 in interest from savings acxount, and contributed $2900 to a tax-deferred retire

xz_007 [3.2K]

Add them all.34,6000 and 15000 and 2900 and 4050

4 0

3 years ago

Cans of frozen orange juice are weighed to ensure they are not underfilled. Cans are independent, and the probability that a can

olga2289 [7]

Answer: 0.999986176

Step-by-step explanation:

To solve this, the probability distribution formula for selection will be used

Where P(x=r) = nCr * p^r * q^n-r

To get the probability that all 3cans are not overfilled, since the probability of success given in the question is that of a can being overfilled, then we will first derive the probability of having exactly 3cans being overfilled and subtract this gotten answer from 1

n= 3, r=3, p=0.024, q=1-0.024=0.976

When, 3 cans are overfilled, P(x=3) becomes:

P(x=3) = 3C3 * 0.024^3 * 0.976^0

P(x=3) = 1 * 0.000013824 * 1

P(x=3) = 0.000013824.

Then, probability that all three cans are not overfilled becomes :

1 - 0.000013824. = 0.999986176,

7 0

3 years ago

A sample of 270 students who were taking online courses were asked to describe their overall impression of online learning on a

Luden [163]

Answer:

An 80% confidence intervals are (5.73 ,5.88)

Step-by-step explanation:

Given sample size (n) is = 270

The average score (μ) =5.81

and standard deviation σ= 0.99.

80% confidence interval:-

The 80% confidence interval of the z- value is 1.28 ( from z-table)

An 80% confidence interval is defined by sample mean ± 1.28 standard error

that is μ ± 1.28 σ/√n

now substitute values (5.81 ± 1.28(0.99/√270))

(5.81 - 1.28(0.0602),5.81 + 1.28(0.0602)

(5.81 -0.0770 ,5.81 -0.0770)

(5.73 ,5.88)

Conclusion:-

An 80% confidence intervals are (5.73 ,5.88)

Therefore the population mean 5.81 lies between (5.73 ,5.88) at 80% confidence intervals

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2 years ago

Using Substitution 4x-3y=-10 and x=1/4y-1

Alinara [238K]

Answer:

Then the solution is (-1/4, 3)

Step-by-step explanation:

Start by eliminating the fractional coefficient 1/4: multiply all 3 terms in the second equation by 4. This results in equation (b), below:

4x - 3y = -10 (a)

4x = y -4 (b)

Substitute y - 4 for 4x in equation (a):

y - 4 - 3y = -10

Combining like terms, we get -2y = -10 + 4, or -2y = -6, or y = 3.

Since x = (1/4)y - 1, if y = 3, then x = (1/4)(3) - 1, or x = 3/4 - 1, or x = -1/4

Then the solution is (-1/4, 3)

7 0

3 years ago