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3 years ago

If there are 10 people in a room, how many different combinations of three could there be?

Mathematics

1 answer:

Gnom [1K]3 years ago

4 0

Answer:

there could be three different.

Step-by-step explanation:

it could be a combination of the two genders that can make them different :)

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5) Tom knows that in his school 10 out of every 85 students are left-handed.

Alina [70]

Answer:

yes well hi and hit the WOW

Step-by-step explanation:

7 0

3 years ago

A chemist wants to mix a 66% alcohol solution with eight liters of 54% alcohol solution to produce a solution that is 65% alcoho

Rzqust [24]

Answer:

We have 8 liters of 54% alcohol.

We will add "x" liters of 66% alcohol to make "8 +x" liters of 65% alcohol.

54 * 8 + 66 x = 65 (8 + x)

432 + 66x = 520 + 65x

x = 88 liters

Step-by-step explanation:

3 0

3 years ago

Seth has a bank account which pays 1.01% interest, compounded quarterly. Seth withdraws $4,567 from the account every quarter fo

dimulka [17.4K]

Answer:

C. $538,021.66

Step-by-step explanation:

It is given that the money Seth withdraws was compounded every quarter for 35 years. So, we get,

Amount withdrawn every quarter, P = $4567

Rate of interest, r = $\frac{0.0101}{4}$ = 0.002525

Time period, n = 35 × 4 = 140

Now, as we know the formula for annuity as,

$P=\frac{r \times PV}{1-(1+r)^{-n}}$

where P = installments, PV = present value, r = rate of interest and n = time period.

This gives, $PV=\frac{P \times [1-(1+r)^{-n}]}{r}$

i.e. $PV=\frac{4567 \times [1-(1+0.002525)^{-140}]}{0.002525}$

i.e. $PV=\frac{4567 \times [1-(1.002525)^{-140}]}{0.002525}$

i.e. $PV=\frac{4567 \times [1-0.7021]}{0.002525}$

i.e. $PV=\frac{4567 \times 0.2975}{0.002525}$

i.e. $PV=\frac{1358.68}{0.002525}$

i.e. $PV=538,091.08$

So, the closest answer to initial value of the account is $538,021.66

Hence, option C is correct.

6 0

3 years ago

Read 2 more answers

Solve by the quadratic formula. a) 5 b) -1 c) 1 d) -1/2 e) 4

stepan [7]

Answer:

I hope this helps a little bit.

4 0

3 years ago

Read 2 more answers

The ratio of students to teachers is 2:3 respectively.If there are 21 teachers, how many students are there?

yulyashka [42]

Answer:14

Step-by-step explanation:

2:3

14:21

in 14 their is 2 7's

in 21 their is 4 7's

6 0

3 years ago