x2 = 20

a.4.47

b. -3.97, 3.97

c. -10, 10

d. -4.47, 4.47

Answer:

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

**hope this helps**

**Step-by-step explanation:**

out of 24 students, 6 preferred to use pastels for their portraits while 4 preferred to use watercolours watercolours. what percentage of the class preferred pastels? % Jasmin bought a box of 40 assorted coloured pastels, 1/5 are blue, 3/10 are green, 20% are red and 5 are yellow. Of which colour are there most pastels? How many pastels are colours other than blue, green, red or yellow?

Let U be a square matrix such that Upper U Superscript Upper TUequalsI. Show that det Uequalsplus or minus1. Assume that Upper U Superscript Upper TUequalsI. Since the desired result is that det Uequalsplus or minus1, an intermediate step must be found which contains the expression det U. Which of the following can be applied to the assumption Upper U Superscript Upper TUequalsI to achieve the desired result? A. det (Upper U Superscript Upper TU)Superscript negative 1equalsdet I B. det (Upper U Superscript Upper TU)equalsI C. (Upper U Superscript Upper TU)Superscript negative 1equalsISuperscript negative 1 D. det (Upper U Superscript Upper TU)equalsdet I Simplify the right side of the equation found in the first step. nothing Which property can be used to simplify the left side of the equation found in the first step? Select all that apply.

Marcus states that the polynomial expression 3x3 – 4x2y + y2 + 2 is in standard form. Ariel states that it should be y2 – 4x2y + 3x3 +2. Explain which student is correct and why.

8. The initial value of an investment is $12,000. If the investment earns an annual interest rate of 2.2%, what is its value in 10 years?a. $14,917.30b. $14,640.00c. $14,627.93d. $87,655.58

The length of a rectangle is 5ft longer than twice the width if the perimeter is 58 ft find the length and width of the rectangle

Let U be a square matrix such that Upper U Superscript Upper TUequalsI. Show that det Uequalsplus or minus1. Assume that Upper U Superscript Upper TUequalsI. Since the desired result is that det Uequalsplus or minus1, an intermediate step must be found which contains the expression det U. Which of the following can be applied to the assumption Upper U Superscript Upper TUequalsI to achieve the desired result? A. det (Upper U Superscript Upper TU)Superscript negative 1equalsdet I B. det (Upper U Superscript Upper TU)equalsI C. (Upper U Superscript Upper TU)Superscript negative 1equalsISuperscript negative 1 D. det (Upper U Superscript Upper TU)equalsdet I Simplify the right side of the equation found in the first step. nothing Which property can be used to simplify the left side of the equation found in the first step? Select all that apply.

Marcus states that the polynomial expression 3x3 – 4x2y + y2 + 2 is in standard form. Ariel states that it should be y2 – 4x2y + 3x3 +2. Explain which student is correct and why.

8. The initial value of an investment is $12,000. If the investment earns an annual interest rate of 2.2%, what is its value in 10 years?a. $14,917.30b. $14,640.00c. $14,627.93d. $87,655.58

The length of a rectangle is 5ft longer than twice the width if the perimeter is 58 ft find the length and width of the rectangle

**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

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?

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.

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:

Then,

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

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.

**Answer:**

168 books

**Step-by-step explanation:**

**Given**

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:

**Take LCM**

**From the question, we understand that:**

of the remaining books

**This means:**

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

**The total number of books can then be calculated using:**

**Substitute 75 for Chinese**

**Make Total the subject:**

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

**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:

In which

x is the number of sucesses

e = 2.71828 is the Euler number

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.

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

And p is the probability of X happening.

**Poisson process with rate 2 per minute**

This means that

**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).

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

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

This is P(X = 3).

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

a. 12 inches

b. 216 inches

c. 412 inches

d. 12/4 inches

I think it might be A

y = 4x - 10

**Answer:**

(2,5; 0)

(0: - 10)