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:**

The value of the Euler \phi function (\phi is the Greek letter phi) at the positive integer n is defined to be the number of positive integers less than or equal to n that are relativel prime to n, For example for n=14, we have {1, 3, 5, 9, 11, 13} are the positive integers less than or equal to 14 which are relatively prime to 14. Thus \phi (14) = 6.Find the following:\phi(9) = __________.\phi(15) = __________.\phi(75) =__________.

True or false Every number divisible by 9 is also by 3?

Solve for the missing variablesx=?y=?

Caroline needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 2.75 hours and charged her $114 for parts. The total was $320.25. Write and solve an equation which can be used to determine xx, the cost of the labor per hour.

What is the domain of h?A) -5≤h(x)≤4B) The h(x) values -4,-2,2,4, and 6C) The h(x) values -5,-4,0,2, and 4D) -4≤h(x)≤6

True or false Every number divisible by 9 is also by 3?

Solve for the missing variablesx=?y=?

Caroline needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 2.75 hours and charged her $114 for parts. The total was $320.25. Write and solve an equation which can be used to determine xx, the cost of the labor per hour.

What is the domain of h?A) -5≤h(x)≤4B) The h(x) values -4,-2,2,4, and 6C) The h(x) values -5,-4,0,2, and 4D) -4≤h(x)≤6

LOLLOLOLOOLOLASDLODSALLOASDLOASD

**Answer:**

Cai's Would Be Bluer

**Step-by-step explanation:**

Since 2/5 is 40% and 5/11 is 45% Cai's would be bluer!

Cai's paint will be bluer because she used a higher percentage of blue paint (45.45%) in her mix compared to Casho who used 40% blue paint.

In order to determine whose paint mix will be bluer, we must compare the ratio of blue to red paint in each student's mix. Cai mixes 5 cups of blue and 6 cups of red paint. Casho mixes 2 cups of blue and 3 cups of red paint. We find the percentage of blue paint by dividing the amount of blue paint by the total amount of paint and then multiplying by 100. For Cai, it would be (5 / (5 + 6)) * 100 = 45.45% blue. For Casho, it would be (2 / (2 + 3)) * 100 = 40% blue. Thus, **Cai's purple paint** will be bluer because it has a higher percentage of blue paint.

#SPJ2

**Answer:**

- the hypotenuse side, c =
**23.1 cm**

- angle A =
**41.26 ⁰**

- angle B =
**48.74 ⁰**

**Step-by-step explanation:**

Given;

first leg of the right triangle, a = 15.21 cm

second leg of the right triangle, b = 17.34 cm

Angle C = 90 ⁰

The missing parameters;

- the hypotenuse side = c

- angle A

- angle B

Use Pythagoras theorem to calculate the missing side "c", which is the hypotenuse

c² = a² + b²

c² = (15.21)² + (17.34)²

c² = 532.02

c = √532.02

c = 23.1 cm

The missing angle A is calculated as;

The missing angle is calculated as;

B = 90⁰ - A

B = 90⁰ - 41.26⁰

B = 48.74⁰

Answer:

Step-by-step explanation:

The given quadratic equation is expressed as

x^2 + 17x − 12 = −84

Adding -84 to the left hand side and the right hand side of the equation, it becomes

x^2 + 17x − 12 + 84 = −84 + 84.

x^2 + 17x + 72 = 0

We would find two numbers such that their sum or difference is 17x and their product is 72x^2. The two numbers are 8x and 9x. Therefore

x^2 + 8x + 9x + 72 = 0

x( x + 8) + 9(x + 8) = 0

x + 9 = 0 or x + 8 = 0

x - 9 or x = 8

**Answer:**

**Step-by-step explanation:**

Given the **Quotient Rule of Exponents:**, you must subtract the exponents of each exponential expression (in fractions) before applying the Product Rule of Exponents (I will explain in a while what it means).

First, subtract the exponents of the first fraction,

Next, subtract the exponents of the second fraction:

At this point, we have the following exponential expressions: and .

Since the required operation is multiplication, then you can apply the **Product Rule of Exponents**:

Therefore, **the correct answer is ****.**

Please mark my answers as the Brainliest, if you find this helpful :)

**Answer:**

It is A

**Step-by-step explanation:**

Because the variable is w and that would mean week so it is 45 every week

**Answer:**

It is A

Step-by-step explanation:

Because the variable is w and that would mean week so it is 45 every week