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Ira Lisetskai [31]
3 years ago
8

there are 12 boys and 10 girls in the gym class. If 6 more boys joined , how many more girls are needed to stay at the same rati

o.

Mathematics
1 answer:
Travka [436]3 years ago
4 0
Hope this helps good luck ☺

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The triangles are similar.
Lubov Fominskaja [6]
I set up a proportion, the answer should be x=21
3 0
2 years ago
Factorial – is the product of natural numbers, for example:
svp [43]

Answer:

Step-by-step explanation:

11! = 11*10*9*8*7*6*5*4*3*2*1 = 3991600

15! = 15*14*13*12*11*10*9*8*7*6*5*4*3*2*1=1.307674368 * 10^{12}

also looks like this                             1,307,674,368,000

20! = 20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2 = 2.432902008 * 10^{18}

also looks like this                             2,432,902,008,000,000,000

8!(7-3)! = 8!4! = (8*7*6*5*4*3*2)(4*3*2) = 967,680

10!(9-5)!13! = 10!4!13! =3,628,800*24*6,227,020,800 = 5.423187139*10^{17}

8 0
3 years ago
Help with question 3 please
Vlad1618 [11]

12-4/5(x+15) = 4

12-(4x+60)/5 = 4

60-4x+60 / 5 = 4

120-4x = 20

-4x = -100

x=25

5 0
3 years ago
Which set of coefficients of the terms in the Expansion of the binomial (x+y)^3 is correct?
lora16 [44]
A is correct.

Why? After opening the brackets we can see the equation as x^{3} + 3x^{2}y + 3y^{2}x + y^{3}
3 0
2 years ago
at a museum, a model of a rocket is 3 feet high. the model has a scale of 1 foot to 121 feet. the museum manager will create a n
notka56 [123]

Answer:

0.79 ft ≈ For 30 feet

Step-by-step explanation:

This is even a tricky question for me, I am pretty sure this would be around 0.79 feet. But I am not too sure so I am very sorry if I am incorrect.

I hope this helps, if it doesn't then just message me and ill be more than happy to help :)

3 0
2 years ago
Read 2 more answers
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