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vova2212 [387]
3 years ago
12

The answer to this question

Mathematics
1 answer:
umka2103 [35]3 years ago
4 0
But where is the choices or the picture
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There were 80 runners to start a race. In the first half of the race, 1/4 of them dropped out. In the second half of the race, 2
IgorLugansk [536]

Answer:

36 runners finished the race.

Step-by-step explanation:

In the first half of the race, 1/4 of them dropped, so we need to calculate 1/4 of 80:

(1/4) * 80 = 80/4 = 20

If 20 runners dropped out, now we have 80 - 20 = 60 runners.

Then, in the second half, 2/5 of the remaining runners dropped out, so:

(2/5) * 60 = 2*60/5 = 120/5 = 24

If 24 runners dropped out, now we have 60 - 24 = 36 runners.

So, 36 runners finished the race.

7 0
3 years ago
Please someone explain to me how did we multiply the denominator in this
AleksandrR [38]

ok so what you wanna do is use multiplication

8 0
3 years ago
How do you do this question?
Step2247 [10]

Answer:

D

Step-by-step explanation:

f(x)=(x-1)(x^2+2)^3\\f'(x)=(x-1)*3(x^2+2)^2*2x+(x^2+2)^3*1\\f'(x)=6x(x-1)(x^2+2)^2+(x^2+2)^3\\f'(x)=(x^2+2)^2[6x^2-6x+x^2+2]\\f'(x)=(x^2+2)^2(7x^2-6x+2)\\D

7 0
3 years ago
Math is hard help !!!!!
3241004551 [841]

Answer:

3000

Step-by-step explanation:

x = original amount of GHC

\frac{1}{3} (\frac{1}{2}x) --> 1/6x = 500

x= 3000

7 0
3 years ago
Factorise 6+ 9x show working please
Stolb23 [73]
6 + 9x.....a common factor in both terms is 3

3(2 + 3x) <==
5 0
3 years ago
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