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Scilla [17]
3 years ago
8

Manita carries a box of mass 40 kg. What is the weight of the box?( g=9.8m/s)​

Mathematics
1 answer:
Lilit [14]3 years ago
8 0

Explanation:

Mass of boy = 40 kg

Mass of box = 20 kg

Total mass = 60 kg

Initial potential energy = 0 (since height would be 0 initially)

Final potential energy = mgh

Taking g as 10 m/s²,

=> 60 × 10 × 15

= 9,000 J

So, work done = final potential energy - initial potential energy

= 9,000 J

Power = Work/Time

=> Power = 9000/25

=> Power = 360 J/s

or 360 watt.

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PLEASE HELP! I HAVE TWO QUESTIONS AND WILL GIVE 100PTS AND BRAINLIEST IF CORRECT!
Volgvan

Answer:

1) $283.50

2) 65.21 meters.

Step-by-step explanation:

Part 1)

We know that a spool of ribbon holds 6.75 meters.

A craft club buys 21 spools.

So, the total length of ribbon bought is:

T=21(6.75)=141.75\text{ meters}

Each meter costs $2. So, the total cost will be:

141.75(2)=\$ 283.50

Part 2)

A spool holds 6.75 meters.

We bought 21 of them, so that total length we have is 141.75 meters.

The club used 76.54 meters.

So, the amount of ribbon that is left is represented by:

141.75-76.54

Subtract:

=65.21\text{ meters}

So, 65.21 meters of ribbon will be left.

7 0
3 years ago
Read 2 more answers
The perimeter of XYZ is ___ units.
In-s [12.5K]

Look at the picture.

ZY = 5+3=8

For XY and ZX use the Pythagorean theorem.

XY^2=3^2+4^2\\\\XY^2=9+16\\\\XY^2=25\to XY=\sqrt{25}\\\\XY=5

ZX^2=5^2+4^2\\\\ZX^2=25+16\\\\ZX^2=41\to ZX=\sqrt{41}

The perimetero fo XYZ:

P_{\triangle XYZ}=8+5+\sqrt{41}=\boxed{13+\sqrt{41}}

7 0
3 years ago
You scored 18 out of the 60 points scored by your team. what percent of your team's points did you score?70%30%
Doss [256]
10% of 60 = 6
6 x 3 = 18
You scored 30% of your team's points.

Hope This Helps You!
<span>Good Luck Studying :)</span>
6 0
3 years ago
Read 2 more answers
In the band, there are 2 vocalists and 5 musicians. What is the ratio of musicians to vocalists
AfilCa [17]

Answer:

The answer is D. 5 to 2

Step-by-step explanation:

It sounds like they want the ratio to be given in that order.

Hope that helps!

3 0
2 years ago
What is the value of x ? 6.75 + 3/8x = 13 1/4
Bad White [126]

Let's solve your equation step-by-step.

6.75+38x=1314

Step 1: Simplify both sides of the equation.

38x+6.75=534

Step 2: Subtract 6.75 from both sides.

38x+6.75−6.75=534−6.75

38x=132

Step 3: Multiply both sides by 8/3.

(83)*(38x)=(83)*(132)

x=523

Answer:

x=1713

7 0
3 years ago
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