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3 years ago

Erin wants to carpet the floor of her closet a floor plan of the closet is shown how much carpet does Aaron need

Mathematics

2 answers:

erma4kov [3.2K]3 years ago

8 0

I think 3 by 10...length X width ...

Lady bird [3.3K]3 years ago

6 0

Answer:780 ft

Step-by-step explanation:

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A committee must be formed with 5 teachers and 4 students. If there are 6 teachers to choose from, and 15 students, how many dif

ZanzabumX [31]

Answer:

8190 ways

Step-by-step explanation:

Given

$Teachers = 6$

$Students = 15$

Selection

$Students = 4$

$Teachers = 5$

Required

Number of ways of selection

4 students can be selected from 15 students in:

$Students= ^{15}C_4$

Similarly.

5 teachers can be selected from 6 teachers in:

$Teachers= ^{6}C_5$

So, the required number of selection is:

$Selection = ^{15}C_4 * ^6C_5$

Apply combination formula:

$Selection = \frac{15!}{(15-4)!4!} * \frac{6!}{(6-5)!5!}$

$Selection = \frac{15!}{11!4!} * \frac{6!}{1!5!}$

$Selection = \frac{15*14*13*12*11!}{11!*4*3*2*1} * \frac{6*5!}{1*5!}$

$Selection = \frac{15*14*13*12}{4*3*2*1} * \frac{6}{1}$

$Selection = \frac{32760}{24} * 6$

$Selection = 1365 * 6$

$Selection = 8190$

8 0

3 years ago

Calculate the Rate of change

mylen [45]

Answer:

I think it's 0.04

Step-by-step explanation:

Each 10 years the pupil gets smaller by 0.4 millimeters

If you divide 0.4 by 10 you get 0.04 which should be millimeters per year

again dont take my word for it im not a goddess lol

5 0

3 years ago

Dana walks 3/5 mile in 1/4 hour. What is dana's walking rate in miles per hour?

Flura [38]

Here, our equation is 3/5 (0.6) mile per 1/4 (0.25) hour. 0.25 times 4 = 1, so we have to multiply 1/4 (0.25) 4 times to get 1 mile. To get a proportional answer, we must also multiply 3/5 (0.6) by 4. This comes out to 2.4. So her walking rate is 2.4 miles per hour.

8 0

3 years ago

Which is a solution to the equation 6x + y = –4?

Stolb23 [73]

(x,y)
sub those for x and y and see if you get a true statement

(2,-8)
6(2)+-8=-4
12-8=-4
4=-4
fasle

(2,8)
6(2)+8=4
12+8=4
20=4
false

(1,2)
6(1)+2=4
4+2=4
6=4
false

(1,-10)
6(1)+-10=4
6-10=-4
-4=-4
true

ANSWER IS D

7 0

3 years ago

suppose that the lifetime of a transistor is a gamma random variable x with mean of 24 weeks and standard deviation of 12 weeks.

emmainna [20.7K]

The probability that the transistor will last between 12 and 24 weeks is 0.424

X= lifetime of the transistor in weeks E(X)= 24 weeks

O,= 12 weeks

The anticipated value, variance, and distribution of the random variable X were all provided to us. Finding the parameters alpha and beta is necessary before we can discover the solutions to the difficulties.

X~gamma( $\alpha ,\beta$ )