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2 years ago

There are 10 players on the swim team. How many ways can the coach select 3 people to swim in the relay?

Mathematics

1 answer:

Kruka [31]2 years ago

5 0

Answer:

C. 720

Step-by-step explanation:

10 - 3 is 8 so you multiply all the numbers from 10 through 8

10 * 9 * 8 = 720

That is the answer. Hope it helped!

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Find the slope, distance and midpoint between

Dovator [93]

Answer:

Slope- 4

Distance- 12.4

Midpoint- (6,8)

Step-by-step explanation:

Slope- $\frac{y2-y1}{x2-x1}$

$\frac{2-14}{4-7} =\frac{-12}{-3}=4$

Distance- $d = \sqrt{(x_2 - x_1)^2 + (y_2-y_1)^2}$

$d = \sqrt{(4 - 7)^2 + (2-14)^2}$

$d = \sqrt{-3^2 + -12^2}$ $d = \sqrt{144+9}=\sqrt{153}$

$\sqrt{153} = 12.4$

Midpoint- $\frac{x1+x2}{2} ,\frac{y1+y2}{2}$

$\frac{7+4}{2} =\frac{12}{2} = 6=x$

$\frac{14+2}{2} = \frac{16}{2} = 8 = y$

(6,8)

6 0

3 years ago

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. What is the resulting expression?

siniylev [52]

Factoring the polynomial $4x^4-20x^2-3x^2 + 15$ by grouping means separation of the polynomial in two addends, each of them consists of two addends:

$4x^4-20x^2-3x^2 + 15=(4x^4-20x^2)+(-3x^2+15).$

In first brackets the common factor is $4x^2,$ in second brackets the common factor is $-3.$

Then

$(4x^4-20x^2)+(-3x^2+15)=4x^2(x^2-5)-3(x^2-5)=(x^2-5)(4x^2-3).$

Answer: correct choice is B

7 0

4 years ago

Read 2 more answers

A wildlife conservation group buys the 9 square miles of land shown.

Natasha2012 [34]

Answer:

3 square miles

Step-by-step explanation:

Three equal lines, 9 miles. 9/3 = 3, so each side of the triangle is 3 miles long hope this helps :)

8 0

3 years ago

Read 2 more answers

HELP WILL GIVE BRAINLIEST

liberstina [14]

Answer:

D) y+3=-1/4(x-8)

Step-by-step explanation:

cause y--3 = y3

4 0

3 years ago

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Estimate 196 and 482

geniusboy [140]

When you estimate you round to the nearest whole number (simply to make it easier.) Depending on what place you need to estimate to (like hundreds, or just tens..)

Let's turn 196 into 200 and 482 into 480

200+480 = 680

Hope this hlps!

3 0

4 years ago

Read 2 more answers