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3 years ago

How many ways can a person select 3 videotapes from a collection of 10 tapes?

1 answer:

6 0

If the 10 videotapes are distinct (different) and the order of selection is immaterial, then there are
C(10,3)=10!/(3!(10-3)!)=10!/(3!7!)=10*9*8/(1*2*3)=120
ways to select three videotapes out of 10.

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If the measure of angle A is 27 degrees, what is the measure of angle 'B'?

timama [110]

Answer:

i'm pretty sure that it is 27 due to vertical angle theorem

let me know if its right :)

Step-by-step explanation:

4 0

3 years ago

A car rental agency advertised renting a car for $28.95 per day and $0.33 per mile. If Trevor rents this car for 4 days, how ma

Gnom [1K]

Answer:

406.67 miles

Step-by-step explanation:

250=28.95(4)+0.33m

250=115.8+.33m

134.2=.33m

134.2/.33=.33/.33m

m=406.666666667

rounded: m=406.67

4 0

2 years ago

Which inequality has -25 in its solution set?

Ann [662]

Many inequalitys have -25 in their solution sets.

There are too many to name.

5 0

3 years ago

A. Write an expression for the area of the shaded region.

tekilochka [14]

Answer:

A. $25x² - 64$

B. $(5x + 8)(5x - 8)$

Step-by-step explanation:

A. The area of the shaded region = area of the whole large square - area of the 4 smaller squares

= (5x*5x) - 4(4*4)

Area of shaded region = $25x^2 - 64$

B. The expression, $25x^2 - 64$ , is the difference of two perfect squares, 25x² and 64. Therefore, apply the rule of factoring difference of two perfect squares.

Thus, $a^2 - b^2 = (a + b)(a - b)$

Therefore, the expression of the are of the shaded region can be expressed in factored form as:

$25x^2 - 64 = (5x + 8)(5x - 8)$

4 0

3 years ago

What is the area of the model on the right?

mestny [16]

I could be wrong, but I think it could be D, 18.5.

3 0

3 years ago