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barxatty [35]
2 years ago
13

I WILL MARK BRAINLIEST

Mathematics
1 answer:
Ket [755]2 years ago
3 0

Answer:D.6

Step-by-step explanation:

just divide

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If Taylor has 2 times as many nickels as quarters and they have a combined value of 245 cents, how many of each coin does he hav
Goryan [66]

Answer:

Taylor has 14 Nickels and 7 Quarters

Step-by-step explanation:

A nickel is equivalent to 5 cent while a quarter is equivalent to 25 cents.

If the number of nickels Taylor has is 2x then the number of quarters is x

Given that the total value is 245 cents,

5(2x) + 25x = 245

10x + 25x = 245

35x = 245

x = 7, 2x = 2 × 7 = 14

It means Taylor has 14 Nickels and 7 Quarters

5 0
3 years ago
What is the probability of flipping a coin 10 times and getting tails 7 times ? Round your answer to the nearest tenth of a perc
KatRina [158]

Answer:

Option C: 11.7%

Step-by-step explanation:

The number of elements in sample space when a coin is flipped 10 times will be:

n(S) = 2^{10} \\= 1024

Let A be the event that the tails appear 7 times:

Then,

C_{(n,k)}=\frac{n!}{(k!)(n-k)!} \\where\\n=population\\k=picks\\In our case, k =7\\and\\n=10\\C_{(10,7)}= \frac{10!}{(7!)(10-3)!}\\= 120\\So, \\P(A) = \frac{n(A)}{n(S)} \\P(A) = \frac{120}{1024} \\= 0.1171\\

Converting into percentage:

P(A) = 0.1171*100=11.7%

So, option C is correct ..

6 0
3 years ago
What is the vertex of the parabola?
Nina [5.8K]

Answer:

(0,5)

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Give examples of a 100% increase, 100%<br> decrease, and 100% error. Explain each.
lakkis [162]

Answer:

100% increase from 100 is 200, the difference is 100.

100% decrease from 100 is 0, the difference is -100

error means that you were quite a long way off from the true value.

4 0
3 years ago
Melinda has shown that a function, f(x), increases by 4 for every unit in the domain. What does this prove?
inn [45]
It proves The function f(x) is an arithmetic sequence.
5 0
3 years ago
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