A student pulls a box of mass 5 kg with a force of
20 N through a horizontal distance of 2.5 m. Calculate the
work done by the student.

Answer:

b.2/6.

Step-by-step explanation:

Simplify each fraction

a.3/3 =1

b.2/6. Divide the top and bottom by 2  1/3

c.3/12 Divide the top and bottom by 3  1/4

d.7/12 Does not simplify

Answer:

[tex]\frac{1}{3}[/tex]

Step-by-step explanation:

I don't think that there are two answers. I think there's only one.

Answer:

irrational

Step-by-step explanation:

example: rational=½=0.5

irrational=3.1428571…

0.5+3.1428571

3.6428571.....

It is irrational because it cannot be changed into fraction form

Answer:

-23.99048X + 310.7619

Step-by-step explanation:

Given the following :

Time(weeks) - - - mass(grams)

0 - - - - - - - - - - - - - 400

3 - - - - - - - - - - - - - 201

6 - - - - - - - - - - - - - 98

9 - - - - - - - - - - - - - 50

12 - - - - - - - - - - - - 24

15 - - - - - - - - - - - - 12

Using the regression calculator, the model for Mass(time), which best fits the data is represented by the equation:

ŷ = -23.99048X + 310.7619

Where, - 23.99044 is the slope or gradient

X is the time(t)

y is the Mass

310.7619 is the intercept. Point where the graph crosses the y-axis.

Answer:

M^t=400•(0.79)^t

Answer:

Increase in value: $20650

Current house value: $315650

Answer:

True

Step-by-step explanation:

1/x = 0

x(1/x)=(0)x

1 isn't equal to 0

Answer:

1110

Step-by-step explanation:

Coz I solved it

Answer:

Hope this is correct

Answer: 21/400

Step-by-step explanation:

Multivitamin:

8 cherry, 5 grape, and 7 orange

Total fruits in Multivitamin container :

(8 + 5 + 7) = 20

P(orange) = Total required outcome / Total possible outcomes)

P(orange) = 7/20

Calcium vitamin :

11 berry, 3 lemon, and 6 pineapple

Total fruits in calcium vitamin container:

(11 + 3 + 6) = 20

Probability of picking a lemon:

P(lemon) = Total required outcome / Total possible outcomes)

P(lemon) = 3/20

Therefore, probability of picking an orange and a lemon equals:

P(orange) × p(lemon) = (7/20) × (3/20) = 21/400

Answer:

88

Step-by-step explanation:

the sequence goes on subtracting 4, 2, 4, 2, 4

hence, with the last number being subtracted by 4, you must then add on 2

86  + 2 = 88

Answer:

SR =3

Step-by-step explanation:

SR + RQ = SQ

2x+23 + x+21 = 14

Combine like terms

3x+44 = 14

Subtract 44 from each side

3x+44-44= 14-44

3x = -30

Divide each side by 3

3x/3 = -30/3

x = -10

SR = 2x+23 = 2(-10)+23 = -20+3 =3

Answer: 3

Step-by-step explanation:

We can start by making an equation.

Since we know the total length of SQ we can add SR + RQ to equal SQ.

[tex](2x+23)+(x+21)=14[/tex]

The parenthesizes are not necessary but they help for understanding the parts of the equation.

We will remove the parenthesizes and combine like terms.

[tex]3x+44=14\\[/tex]

Now subtract 44 from both sides to cancel it out from the side with x.

[tex]3x=-30[/tex]

Now divide by 3 to isolate x.

[tex]x=-10[/tex]

So x = -10.

Now we can plug in the value of x into SR.

[tex]2(-10)+23 = SR[/tex]

Solve

So SR = 3

0.008 if you are looking for a decimal. If you need a fraction it would be simply 8/1000 since 8 times 1 would be 8.

Answer:

Step-by-step explanation:

8 x 1/1000

= 8/1000

Simplified to 1/125

As a decimal it’s 0.008

Answer:

False

Step-by-step explanation:

it's because congruent triangles are 180 degrees and that added up is more than 180 degrees.

The given statement is false.

We have given that,

The triangles shown below must be congruent.

60°

60°

30°

150

We have to determine whether the given statement is true or false.

The sum of all angles is 180 degrees

[tex]\angle A+\angle B+\angle C=180[/tex]

it's because congruent triangles are 180 degrees and that added up is more than 180 degrees.

Therefore the given statement is false.

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Answer:

i think its Let a be the side length, then area=a^2=14400 sq m. Therefore a=√14400=120m.

Step-by-step explanation:

Answer:

[tex]120[/tex] [tex]meters[/tex]

Step-by-step explanation:

Use the formula for the area of a square.

[tex]A=s^2[/tex]

[tex]14400=s^2[/tex]

[tex]\sqrt{14400} =s[/tex]

[tex]120=s[/tex]

Answer:

erm

Step-by-step explanation:

0.2

1/4

40%

0.5

3/4

Answer:

Vertex : (1, -9)

Axis of symmetry : x = 1

x-intercepts : (-2, 0), (4, 0)

y-intercept : (0, -8)

Step-by-step explanation:

Quadratic function to be graphed is,

h(x) = (x - 1)² - 9

By comparing this equation with the vertex form of the parabola,

f(x) = (x - h)² + k

here (h, k) is the vertex of the parabola.

Therefore, vertex of the parabola to be graphed will be (1, -9)

Since coefficient of highest degree term (x²) is positive, parabola will open upwards.

Axis of symmetry of the parabola,

x = 1

For x-intercepts,

(x - 1)² - 9 = 0

(x - 1)² = 9

(x - 1) = ±3

x = 1 ± 3

x = -2, 4

Points of x-intercepts will be (-2, 0), (4, 0).

For y-intercepts, (x = 0)

h(x) = (0 - 1)² - 9

      = 1 - 9

      = -8

So the point of y-intercept will be (0, -8).

Answer:

Vertex : (1, -9)

Axis of symmetry : x = 1

x-intercepts : (-2, 0), (4, 0)

y-intercept : (0, -8)

See the attached graph of what it should all include and look like for Plato/Edmentum users

Step-by-step explanation:

Answer: 2

Step-by-step explanation:

one plus one equals 2.

1+1=2

Answer:2

Step-by-step explanation:

Answer:

1 = 118 degrees

Step-by-step explanation:

Since a straight line is 180 degrees take

180 - 62 = 118 degrees

(Even though the line is slanted it still equals 180 degrees).

Have a good day. :)

Hope this helps!

(brainliest would be appreciated)

Answer:

L=16.5 inches

Step-by-step explanation:

L=W+12

P= 2L+2W

P=2(W+12)+2W

42=4W+24

4W=42-24

W=18/4=4.5

L=12+4.5=16.5 inches

Answer:

25 levels

Step-by-step explanation:

First, convert 1 2/5 to a decimal. Since 2/5=0.4, 1 2/5 is 1.4. Now, you can set up the following expression:

[tex]\dfrac{35\text{in}}{1.4\text{in}}=25[/tex] levels.

Hope this helps!

Answer:

n = -21/11

Step-by-step explanation:

11(n - 1) + 35 = 3

Expand the brackets.

11n - 11 + 35 = 3

Add the terms -11 and 35.

11n + 24 = 3

Subtract 24 on both sides.

11n = 3 - 24

Subtract.

11n = -21

Divide 11 into both sides.

n = -21/11

Answer:

[tex]n = - \frac{21}{11} \\ [/tex]

Step-by-step explanation:

[tex]11(n - 1) + 35 = 3 \\ 11n - 11 + 35 = 3 \\ 11n + 24 = 3 \\ 11n = 3 - 24 \\ 11n = - 21 \\ \frac{11n}{11} = \frac{ - 21}{11} \\ n = - \frac{21}{11} [/tex]

Answer:

ESTO ES INCORRECTO

Step-by-step explanation:

CON LA ECUACIÓN DE GALILEO GALILEI TENEMOS:

x = 54.6 mph( 4.25 h) = 232 milles

Answer:

Mr. Carson traveled from his house in Pennsylvania to a ski resort in upstate New York. He drove 4.25 hours at a rate of 54.6 miles per hours. When a friend asked how far he traveled to get to the resort, Mr. Carson said “about 2,320 miles.”

Mr. Carson actually traveled a distance of  

✔ 232.05 miles

.

Was Mr. Carson’s estimate reasonable?

✔ no

español:

Carson viajó desde su casa en Pensilvania a una estación de esquí en el norte del estado de Nueva York. Condujo 4,25 horas a una velocidad de 54,6 millas por hora. Cuando un amigo le preguntó qué tan lejos había viajado para llegar al resort, el Sr. Carson dijo "aproximadamente 2,320 millas".

Carson en realidad viajó una distancia de

✔ 232.05 millas

.

¿Fue razonable la estimación del Sr. Carson?

✔ no

Answer:

Is your question, how long did it take for him to do it? If so the answer is: .69 hours

Step-by-step explanation:

100 divided by 145.0441= .6894454859

Avg. Time is .69 hours

None of these guesses are correct.

Let's work this problem in reverse.

Try it this way.

1/2x-4=5

This is actually quite simple to solve.

Because half of x minus 4 will equal 5, we just need to add 4 and 5 to get half of our mystery number. 4+5=9. So, 9 is half of x. Add 9 to 9 to get our mystery number, which is 18.

30 is not correct because Half of 30 is 15, and 15-4 is 11, not 5.

2 is also not correct because half of 2 is one, and 1-4 is -3, not 5.

4 1/2 is not correct as well because half of 4 1/2 is 2 1/4, and 2 1/4-4 is -2 1/2, not 5.

Hope this helped!

None of her guesses are correct. “When 4 is subtracted from half of a number the result is 5.” The number should be 18.

Two or more expressions with an Equal sign is called as Equation.

Given,

When 4 is subtracted from half of a number the result is 5.”

Let the number be x

x/2-4=5

We need to find the value of x

x/2=5+4

x/2=9

x=18

a. Her first guess is 30. Is she correct

No, the number should be 18 not 30 because half of 30 is 15 and when we subtract 4 from 15 we get 11

b. Her first guess is 2. Is she correct

No, the number should be 18 not 2 because half of 2 is 1 and when we subtract 4 from 1 we get -3.

Even 4 1/ 2 is not correct hence 18 is not correct.

Hence, none of her guesses are correct.

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Answer:

f = 43/40 or 1 13/30

Step-by-step explanation:

60f=86

Divide each side by 60

60f/60=86/60

f = 86/60

Divide the top and bottom by 2

f = 43/30 or as a mixed number 1 13/30

Answer:

[tex] {(4x)}^{ \frac{3}{2}} [/tex]

Step-by-step explanation:

[tex] \huge \sqrt{( {4x)}^{3} } \\ \\ \huge = \: {(4x)}^{3 \times \frac{1}{2} } \\ \\ {\huge {\red{ \boxed{ = {(4x)}^{ \frac{3}{2} }}}}}..required \: answer \\ \\ \huge = ( {4})^{ \frac{3}{2} } {x}^{ \frac{3}{2} } \\ \\ \huge = ( { {2}^{2} })^{ \frac{3}{2} } {x}^{ \frac{3}{2} } \\ \\ \huge = ( { {2} })^{ 3 } {x}^{ \frac{3}{2} } \\ \\ \huge \: = 8 {x}^{ \frac{3}{2} } [/tex]

Answer:

55.5 kg.

Step-by-step explanation:

Potential energy =  mgh

= m * 9.81 * 4.5 = 2450    where m  is the mass of the man.

m = 2450 / (9.81* 4.5)

= 55.5 kg.

Answer:

The new ribbon is 511.85 meter long.

The total cost Rs. 6142.2

Step-by-step explanation:

First of all we convert all lengths to the standard unit that is meter.

0.5 km =500 meter

1005 cm = 10.05 meter

1800 mm = 1.8 meter

total length in meters

500+10.05+1.8= 511.85

total cost at the rate of Rs. 12 per meter will be

511.85×12=6142.2

The length of the new ribbon is 511.85m.

The cost of the single ribbon formed is Rs. 6142.20.

Common units of length are Millimeter(mm), centimeter(cm), meter(m), and kilometer(km).

The S.I. unit of length is the meter.

All units relate to the meter in the following way:

1000mm = 1m ⇒ 1mm = 1/1000m ⇒ 1mm = 0.001m

100cm = 1m ⇒ 1cm = 1/100m ⇒ 1cm = 0.01m

1km = 1000m

The lengths of three pieces of ribbon are given as 0.5km, 1005cm, and 1800mm.

We are asked to find the length of the ribbon formed by joining these 3 ribbons.

To find the total length, we need to add them, but to add we need lengths in equal units. So we convert the three lengths into the common unit meter.

0.5km = 0.5 * 1000 m = 500m (∵ 1km = 1000m)

1005cm = 1005 * 0.01m = 10.05m (∵ 1cm = 0.01m)

1800mm = 1800 * 0.001m = 1.8m (∵ 1mm = 0.001m)

∴ The length of the new ribbon = 500 + 10.05 + 1.8 m = 511.85m.

Cost of the ribbon = Rs. 12 per meter

∴ Cost of the single ribbon formed = Rs. 12 * 511.85 = Rs. 6142.20.

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Answer:

rectangle

Step-by-step explanation: