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3 years ago

15

Survey showed that 1,200 customers eating lunch . 240 ordered coffee with their meal. What percent of customers did not order co

ffee?

1 answer:

finlep [7]3 years ago

3 0

The answer is 80%. 1200-240=960. 960 divided by 1200 is 0.8 which is the 80% that didn’t get coffee. Good luck

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Deidre is picking out some movies to rent, and she is primarily interested in documentaries and children's movies. She has narro

exis [7]

Answer: 6630

Step-by-step explanation:

Given , Number of documentaries = 17

Number of children's movies = 20

Total movies = 17+20=37

Number of combinations of r things taken out of things = $^nC_r=\dfrac{n!}{r!(n-r)!}$

Now, the number of different combinations of 3 movies can she rent if she wants at least one documentary

= (1 documentary+2 children's movies , 2 documentary+1 children's movies , 3 documentary+0 children's movies)

$=^{17}C_1\times^{20}C_{2}+^{17}C_2\times^{20}C_{1}+^{17}C_3\times^{20}C_{0}$

$=(17)\times\dfrac{20!}{2!18!}+\dfrac{17!}{2!15!}\times(20)+\dfrac{17!}{3!14!}(1)\\\\=3230+2720+680=6630$

Hence, the number of different combinations of 3 movies can she rent if she wants at least one documentary is 6630 .

3 0

3 years ago

What is the factored form of x^2-6x-16?

e-lub [12.9K]

What 2 numbers multily to get -16 and add to get -6?
-8 and 2
(x+2)(x-8) is answer

5 0

3 years ago

Read 2 more answers

If two lines are parallel, corresponding angles are _________.

jolli1 [7]

B. congruent, im pretty sure

6 0

3 years ago

Read 2 more answers

Which of the following expressions cannot be factored a. 16+4x b. 3x+7 c. 25x+30y d. 40x-30y

Alla [95]

C. 3x + 7 because you can factor out the other 3.
a. 16+4x=4(4+X)
b. 25x+30y=5(5x+6y)
d. 40x-30y = 5(8x-6y)
hope this helps!

6 0

3 years ago

Help 20 ptssss asap !

ELEN [110]

Answer:

Assuming you want an equation, y = -4/3x - 1

Step-by-step explanation:

Formula is y = mx + b

m = slope= -4/3

b = y-intercept = -1

4 0

3 years ago