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3 years ago

How many permutations are possible for 11 objects taken 7 at a time? 330 5,040 237,600 1,663,200

Mathematics

1 answer:

USPshnik [31]3 years ago

5 0

11 choose 7 is equal to 11 choose 4. 11*10*9*8/4/3/2=330.

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y, in terms of time the rain fell, x. The time is measured in hours after 12:00 P.M., with x=0 corresponding to the time 12:

Lana71 [14]

Answer:

At the time measurement starts i.e. initially there was no rainfall i.e. y value is zero.

Step-by-step explanation:

y, in terms of time the rain fell, x.

Now, x is measured in hours after 12 : 00 P.M., with x = 0 corresponding to the time 12 : 00 P.M.

Therefore, the ordered pair (x,y) ≡ (0,0) means that at the time measurement starts i.e. at 12 : 00 P. M. there was no rainfall i.e. y value is zero. (Answer)

7 0

3 years ago

Margaret’s bottle of shampoo is 7/8 full. She uses 1/3 of the shampoo in the bottle to wash the dog. Estimate what fraction of s

AleksandrR [38]

Fraction of shampoo left = $\frac{13}{24}$

Solution:

Given fraction of full shampoo $=\frac{7}{8}$ .

Fraction of shampoo Margaret used $=\frac{1}{3}$

Fraction of shampoo left = Full shampoo – fraction of shampoo used

$=\frac{7}{8}-\frac{1}{3}$

To make the denominators same do cross multiplication.

$=\frac{7\times3}{8\times3}-\frac{1\times8}{3\times8}$

$=\frac{21}{24}-\frac{8}{24}$

$=\frac{21-8}{24}$

$=\frac{13}{24}$

Hence $\frac{13}{24}$ of the shampoo bottle is left.

8 0

4 years ago

Benito embroiders and sells T-shirts. The graph shows his profit as a function of the number of shirts sold. After selling a cer

vovikov84 [41]

Answer:

The correct option is;

The x-intercept represents the shirts he has to sell before making a profit

Step-by-step explanation:

The given data are;

(0, -20), (1, -10), (2, 0), (3, 10), (4, 20), (5, 30), (6, 40), (7, 50), (8, 25), (9, 40), (10, 55), (11, 70)

The data show a linear relationship because successive data point increases by the same amount of 10 for x between 0 and 7 and 15 for x between 8 and 11;

Therefore;

Slope, m of the first linear portion using points (2, 0), and, (4, 20) gives;

m = (20 - 0)/(4 - 2) = 10

The equation of the line is therefore;

y - 20 = 10·(x - 4)

y = 10·x - 40 + 20

y = 10·x - 20

The y-intercept (x = 0) is y = -20

The x-intercept (y = 0) is found as follows;

0 = 10·x - 20

20 = 10·x

10·x = 20

x = 20/10 = 2

Therefore, when x = 2 we have;

Profit = y = 10·x - 20 = 10×2 - 20 = 0

Which can be expressed as, he has to sell more than 2 shirts to make profit

Therefore, the correct option is that the x-intercept represents the shirts he has to sell before making a profit.

4 0

3 years ago

Which of the following is a solution of 4x2 = − 9x − 4?

mestny [16]

The solution is -0.609611 and -1.64, I do not think you can simply find this by factoring but the only way is graphing it

8 0

3 years ago

Read 2 more answers

Y<-*x+2<br> x2-2<br> what’s the answer

devlian [24]

Answer:

its 21

Step-by-step explanation:

3 0

4 years ago