All categories

3 years ago

Find the AOS for y = x^2 + 2x - 5

Mathematics

1 answer:

Kay [80]3 years ago

3 0

Answer:

x= -1

Step-by-step explanation:

The formula is x= -b/2a

so plug in: x= -2/2(1)

x= -2/2

x= -1

You might be interested in

Mohammed wrote down all the money coming in and out for the month. Select all the expenses

melamori03 [73]

What are the answer choices

5 0

3 years ago

I NEED HELP WITH A PROBLEM

nikitadnepr [17]

Answer:

Step-by-step explanation:

Volume of one sugar cube = 1x1x1= 1cm³

Volume of dish = 4x4x4 = 64cm³

Divide volume of dish by volume of one cube to find out how many can fit:

64/1 = 64

8 0

3 years ago

A city is running out of phone numbers available for their population. They currently have 2,000,000 available phone numbers. Th

PIT_PIT [208]

Answer:

The total phone numbers, if the latter ABC is followed, will be 175.

Step-by-step explanation:

We are told that the digits will be in the form ABC and A can take values from 2 – 8, B from 5 – 9 and C from 5 – 9 as well.

This means:

A has 7 possible values (when you count the number of numbers between 2 and 8).

B has 5 possible values.

C has 5 possible values.

Therefore, the total phone numbers, if the latter ABC is followed, will be:

7 x 5 x 5 = 175.

4 0

3 years ago

A cereal box says that now it contains 33% more originally it came with 18.5 ounces of cereal. How much cereal does the box come

Alinara [238K]

Answer:

20%

Step-by-step explanation:

7 0

3 years ago

Please HELP best answer will receive a BRAINLIEST. Given the probability density function f ( x ) = 1/3 over the interval [ 4 ,

olga55 [171]

Answer:

Step-by-step explanation:

Assume that f(x) = 0 for x outside the interval [4,7]. We will use the following

$E[X^k] = \int_{4}^{7}x^k f(x) dx$

$Var(X) = E[X^2]- (E[X])^2$

Standard deviation = $\sqrt[]{Var(X)}$

Mean = $E[X]$

Then,

$E[X] = \int_{4}^{7}\frac{1}{3}dx = \frac{7^2-4^2}{2\cdot 3} = \frac{11}{2}$

$E[X^2] = \int_{4}^{7}\frac{x^2}{3}dx = \frac{7^3-4^3}{3\cdot 3} = 31$

Then, $Var(x) = 31-(\frac{11}{2})^2 = \frac{3}{4}$

Then the standard deviation is $\frac{\sqrt[]{3}}{2}$

7 0

3 years ago