ASAPP PLEASEESolve the following equation algebraically:
x2 = 20
a.4.47
b. -3.97, 3.97
c. -10, 10
d. -4.47, 4.47

Answers

Answer 1
Answer:

Answer: if using the quadratic formula it is D :)

hope this helps

Step-by-step explanation:


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I would appreciate if someone could answer this for a brainlist :)

Answers

Answer:

X=40, Y=140, Z=40 because total sum is 360

Answer:

x is 40° because it's same side interior angle

y is 140° because it's a corresponding angle with the 140° angle

z is 40° because it's a corresponding angle with x

Miko has a vast collection of books in her library. English books make up 3
8
of her collection.
5
7
of the remaining books are Chinese books and the rest are German books. How many books are there in her book collection if there are 75 Chinese books?

Answers

There are 168 books are there in her book collection if there are 75 Chinese books.

Given

Miko has a vast collection of books in her library.

English books = 3/8

Chinese books = 5/7.

Ratio proportion;

A ratio is a comparison of two or more numbers that indicates their quantities in relation to each other.

The proportion of the English books is 3/8, the remaining is:

\rm Remaining\ books=1-(3)/(8)\n \n Remaining\ books=(8-3)/(8)\n\n Remaining\ books=(5)/(8)

Then,

Chines books = ratio of Chinese book × ratio of remaining books × Total books

\rm 75=(5)/(7)* (5)/(8)* Total \ books\n\nTotal \ books =(75 * 7* 8)/(5* 5)\n\nTotal \ books =3* 56\n\nTotal \ books=168\n

Hence, there are 168 books are there in her book collection if there are 75 Chinese books.

To know more about proportion click the link given below.

brainly.com/question/12674321

Answer:

168 books

Step-by-step explanation:

Given

English = (3)/(8)

Chinese = (5)/(7) of the remaining books

Required

Determine the total number of books

If the proportion of the English books is 3/8, the the remaining is:

Remaining = 1 - English

Remaining = 1 - (3)/(8)

Take LCM

Remaining = (8 - 3)/(8)

Remaining = (5)/(8)

From the question, we understand that:

Chinese = (5)/(7) of the remaining books

This means:

Chinese = (5)/(7) * (5)/(8)

Chinese = (5*5)/(7*8)

Chinese = (25)/(56)

From the question, we also understand that 75 are Chinese books.

The total number of books can then be calculated using:

Chinese = (25)/(56) * Total

Substitute 75 for Chinese

75 = (25)/(56) * Total

Make Total the subject:

Total = (56 * 75)/(25)

Total = (4200)/(25)

Total = 168

What is the total cost of a 12.50 item plus 6% sales tax?

Answers

So firstly, we have to determine what 6% of $12.50 is. You can do this by multiplying 12.50 and 6% (or 0.06 in decimal form) to get 0.75, or 75 cents. 75 cents is your 6% sales tax.

Next, add up 12.50 and 0.75 to get $13.25. $13.25 is the total cost of the item.

Answer:

13.25

Step-by-step explanation:

brainliest pls

A reservation service employs six information operators who receive requests for information independently of one another, each according to a Poisson process with rate ???? = 2 per minute. a. What is the probability that during a given 1 min period, the first operator receives no requests? (Round your answer to three decimal places.) b. What is the probability that during a given 1 min period, exactly three of the six operators receive no requests? (Round your answer to five decimal places.)

Answers

Answer:

a) 0.135 = 13.5% probability that during a given 1 min period, the first operator receives no requests.

b) 0.03185 = 3.185% probability that during a given 1 min period, exactly three of the six operators receive no requests

Step-by-step explanation:

To solve this question, we need to understand the Poisson distribution and the binomial distribution.

Poisson distribution:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = (e^(-\mu)*\mu^(x))/((x)!)

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given time interval.

Binomial distribution:

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_(n,x).p^(x).(1-p)^(n-x)

In which C_(n,x) is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_(n,x) = (n!)/(x!(n-x)!)

And p is the probability of X happening.

Poisson process with rate 2 per minute

This means that \mu = 2

a. What is the probability that during a given 1 min period, the first operator receives no requests?

Single operator, so we use the Poisson distribution.

This is P(X = 0).

P(X = x) = (e^(-\mu)*\mu^(x))/((x)!)

P(X = 0) = (e^(-2)*2^(0))/((0)!) = 0.135

0.135 = 13.5% probability that during a given 1 min period, the first operator receives no requests.

b. What is the probability that during a given 1 min period, exactly three of the six operators receive no requests?

6 operators, so we use the binomial distribution with n = 6

Each operator has a 13.5% probability of receiving no requests during a minute, so p = 0.135

This is P(X = 3).

P(X = x) = C_(n,x).p^(x).(1-p)^(n-x)

P(X = 3) = C_(6,3).(0.135)^(3).(0.865)^(3) = 0.03185

0.03185 = 3.185% probability that during a given 1 min period, exactly three of the six operators receive no requests

Which of the following measurements issmallest?
a. 12 inches
b. 216 inches
c. 412 inches
d. 12/4 inches

Answers

I think it might be A

Graph please!!!!
y = 4x - 10

Answers

Answer:

(2,5; 0)

(0: - 10)