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2 years ago

Where n 5 and r = 2 N!/(n-r)

Mathematics

1 answer:

Karo-lina-s [1.5K]2 years ago

5 0

Answer:

$\frac{5 \times 4 \times 3 \times 2 \times 1}{5 - 2} = \frac{120}{3 } = 40$

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I need help with number 33 thank u!

Rufina [12.5K]

Answer:

C. 2,150

Step-by-step explanation:

We know that out of 120 passengers, 86 were satisfied with the service.

To find the percentage amount of passengers who were satisfied, we can divide 86 by 120 and get 0.716 repeating (about 71.6%).

Then, we can multiply the total number of passengers, 3,000, by that number and get 2,150.

7 0

3 years ago

Graph and check to solve the linear system <br> x+y=3<br> -2x+y=-6

Alenkinab [10]

Answer:

-x - y = -3

-2x + y = -6

-3x = -9

x = 3

3 + y = 3

y = 0

(3,0)

6 0

3 years ago

Sonali invests 15% of her monthly salary in insurance policies.

strojnjashka [21]

Answer:

₹42,500

Step-by-step explanation:

Let Sonali's monthly income be ₹x

<h2>According to the question </h2>

$15\% \:ofx + 55\% \: of \: x + 12750 = x$

$= > \frac{15}{100} x + \frac{55}{100} x + 12750 = x$

$= > \frac{70}{100} x + 12750 = x$

$= > 12750 = (1 - \frac{70}{100} )x$

$= > 12750 = 30x$

$= > x = \frac{12750 \times 10}{3}$

$= > 42500$

So your answer will be ₹42,500.

3 0

2 years ago

Read 2 more answers

A circular running track is 1/4 of a mile long Elena runs this track completing each lap in 1/20 of an hour what is her speed

PSYCHO15rus [73]

Answer:

The speed is equal to $5\frac{mi}{h}$

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

x------> the distance in miles

y-----> the time in hours

s----> the speed in mph

$s=\frac{x}{y}$

In this problem we have

$x=(1/4)\ mi$

$y=(1/20)\ h$

substitute

$s=\frac{(1/4)}{(1/20)}=20/4=5\frac{mi}{h}$

3 0

3 years ago

The scoop Shop sells many types of nuts. Lily asks for this mix:

Licemer1 [7]

Answer:

1/12 = 24/12 = 2

pea: 12/24

haz: 4/24

alm: 8/24

cash: 18/24

pec: 6/24

how to do it: find a common denominator, or write it how and scan it with photo math and it will show you how to work it out!

hope this helped or was right, thanks <3

4 0

3 years ago