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kherson [118]
3 years ago
5

Forty children from an after-school club went to the matinee.This is 25% of the children in the club.How many children are in th

e club?
Mathematics
1 answer:
Korvikt [17]3 years ago
7 0
25% = 0.25

40 / 0.25 = 160

40 is 25% of 160.

There are 160 children in the club.
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A man standing near a building notices trhat the angle of elevation to the top of the buiilding is 64. he then walks 240 feet fa
trasher [3.6K]
See the picture attached to better understand the problem
 we know that
in the right triangle ABC
tan 64°=AB/AC------> AB=AC*tan 64°-----> AB=x*tan 64°---> equation 1

in the right triangle ABD
tan 43°=AB/DA----> AB=DA*tan 43°---> AB=(240+x)*tan 43°---> equation 2

equate equation 1 and equation 2
x*tan 64°-=(240+x)*tan 43°---->x*tan 64=240*tan 43+x*tan 43
x*[tan 64-tan 43]=240*tan 43-----> x=240*tan 43/[tan 64-tan 43]
x=200.22 ft

AB=x*tan 64----> AB=200.22*tan 64-----> AB=410.51 ft

the answer is
410.51 ft

3 0
3 years ago
PRAGYA PLEASE HELP ME! (y-3)(y+4)?
Gemiola [76]

Answer:

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Step-by-step explanation:

Once again, FOIL is the way to go!

First, Outside, Inside, Last

y^2+y-12

5 0
3 years ago
Read 2 more answers
Need help fast, being timed!!
tamaranim1 [39]

Answer:

Mr. Roland’s class was more successful because his class’s lower quartile was the same as Mrs. Cai’s class’s upper quartile.

Step-by-step explanation:

From given scatter plot, we see that upper quartile of Mrs. Cai's class = 4

lower quartile of Mr. Roland’s class = 4

Both are equal so that means.

That means Mr. Roland’s class was more successful because his class’s lower quartile was the same as Mrs. Cai’s class’s upper quartile.


Hence last choice is correct.

4 0
3 years ago
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NNADVOKAT [17]

Answer:

Step-by-step explanation:

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7 0
2 years ago
If log3⁡⁡(4y−1)=log3⁡⁡(2y+7), what is the value of y?
Slav-nsk [51]
Knowing that there are two logs on both sides of the brackets, they cancel out. 
This leaves: 

4y-1=2y+7 (solve for y) 
4y-2y=7-1
2y=6
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Hope this helped :) 
5 0
3 years ago
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