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4 years ago

Simplify (7)(-6). need help

2 answers:

7 0

The answer is: - 42 because, 7 x 6 = 42. And since the 6 is next to a negative number, you will add a negative sign next to 42, and your final answer will be: "-42"

Please mark as brainliest answer

dexar [7]4 years ago

5 0

As simple as it can go is As it's multiplied out form, which is -42.

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In the Ardmore Hotel, 20 percent of the guests (the historical percentage) pay by American Express credit card. (a) What is the

xxMikexx [17]

Answer:

(a) The expected number of guests until the next one pays by American Express credit card is 4.

(b) The probability that the first guest to use an American Express is within the first 10 to checkout is 0.0215.

Step-by-step explanation:

The random variable X can be defined as the number of guests until the next one pays by American Express credit card

The probability that a guest paying by American Express credit card is, p = 0.20.

The random variable X follows a Geometric distribution since it is defined as the number of trials before the first success.

The probability mass function of X is:

$P(X=x)=(1-p)^{x}p;\ x=0,1,2,3...,\ 0$

(a)

The expected value of a Geometric distribution is:

$E(X)=\frac{1-p}{p}$

Compute the expected number of guests until the next one pays by American Express credit card as follows:

$E(X)=\frac{1-p}{p}$

$=\frac{1-0.20}{0.20}$

$=4$

Thus, the expected number of guests until the next one pays by American Express credit card is 4.

(b)

Compute the probability that the first guest to use an American Express is within the first 10 to checkout as follows:

$P(X=10)=(1-0.20)^{10}\times0.20$

$=0.1073741824\times 0.20\\=0.02147483648\\\approx0.0215$

Thus, the probability that the first guest to use an American Express is within the first 10 to checkout is 0.0215.

3 0

3 years ago

Please answer this question now in two minutes

Igoryamba

Answer: x=6, y=20

Step-by-step explanation:

Since ΔBCD and ΔTUS are congruent triangles, we can set the sides equal to each other.

y=2y-20 [subtract both sides by 2y]

-y=-20 [divide both sides by -1]

y=20

--------------------------------------------------------------------------------------

3x+32=9x-4 [add both sides by 4, and subtract both sides by 3x]

36=6x [divide both sides by 6]

x=6

7 0

3 years ago

Maddie has saved $375 for a new mountain bike. Her grandmother will also give her

Artist 52 [7]

Answer:

375+215 is greater than or equal to p

Step-by-step explanation:

quick maths

8 0

3 years ago

The school's computer lab goes through 5 reams of printer paper every 6 weeks. Find out how long 3 cases of printer paper is li

djyliett [7]

So to start 3*8=24 reams of paper
24 divided by 5=4.8
4.8*6=28.8 weeks.
It's up to you if you want to do 28 weeks or 29 weeks

7 0

3 years ago

Which of the following is the best estimate of 7/8? ( Answer ASAP )

Triss [41]

Answer:

Step-by-step explanation:

just round up to nearest number and 7/8 is 0.87 so it coloser to 1 than half and the others are way to big.

6 0

3 years ago

Read 2 more answers