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Brums [2.3K]
3 years ago
14

Please show your work! 25% of 80

Mathematics
2 answers:
spin [16.1K]3 years ago
4 0

Answer:

20

Step-by-step explanation:

25% change to .25

.25 x 80

Just solve 25 x 80 which equals 2000

then move decimal over twice giving you 20.00 or 20

Maksim231197 [3]3 years ago
3 0

Answer:

20

Step-by-step explanation:

Of means multiply

25% * 80

Change to decimal form

.25* 80

20

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Sam the scout is going on a camp out with his boy-scout troop. There are large tents that sleep 6 boys and small tents that slee
natita [175]

Answer:

There are 96 large tents and 60 small tents

Step-by-step explanation:

Here, we want to calculate the number of tents of each sizes there

Let the number of 6-boys tent be s and the number of 4-boys tent be f

6s + 4f = 816 ••••••(i)

Ratio of large to small ( ratio of s to f)

8:5 = s/f

8/5 = s/f

8f = 5s

f = 5s/8 ••••(ii)

Substitute ii into i

6s + 4(5s/8) = 816

6s + 5s/2 = 816

Multiply through by 2

12s + 5s = 1,632

17s = 1632

s = 1632/17

s = 96

f = 5s/8

f = (5 * 96)/8 = 60

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2 years ago
It takes Paul 9 hours longer than Li Ming to paint a house. Working together they can do the job in 20 hours. How long would it
Triss [41]

Li Ming can paint the whole house in 10 hours

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3 years ago
Danika picked no more than 40 apples for baking pies. Her recipe for 8 apples to make 1 pie. If p is the number of pies Danika w
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Answer:

Step-by-step explanation:

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3 0
3 years ago
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Match the polygons formed by the sets of points with their perimeters (rounded to the nearest hundredth). Tiles A(1, 1), B(6, 13
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Hello,
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3 years ago
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rock is thrown upward with a velocity of 27 meters per second from the top of a 23 meter high cliff and it misses the cliff on t
ahrayia [7]

the rock will be at 11 meters from the ground level after 5.92 seconds

Step-by-step explanation:

The motion of the rock is a free-fall motion, since the rock is acted upon the force of gravity only. Therefore, it is a uniformly accelerated motion, so its position at time t is given by the equation:

y=h+ut+\frac{1}{2}at^2

where

h = 23 m is the initial height

u = 27 m/s is the initial velocity, upward

a=g=-9.8 m/s^2 is the acceleration of gravity, downward

t is the time

We want to find the time t at which the position of the rock is

y = 11 m

Substituting and re-arranging the equation, we find

11=23+27t-4.9t^2\\4.9t^2-27t-12=0

This is a second-order equation, which has solutions:

t=\frac{27\pm \sqrt{(-27)^2-4(4.9)(-12)}}{2(4.9)}=\frac{27\pm \sqrt{964.2}}{9.8}

So

t_1 = -0.41 s

t_2=5.92 s

The first solution is negative so we neglect it: therefore, the rock will be at 11 meters from the ground level after 5.92 seconds.

Learn more about free fall:

brainly.com/question/1748290

brainly.com/question/11042118

brainly.com/question/2455974

brainly.com/question/2607086

#LearnwithBrainly

8 0
3 years ago
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