Ask question

Ask question

All categories

3 years ago

14

Does anyone know how to do factoring? n^2-15n+56

1 answer:

Maurinko [17]3 years ago

6 0

First, find 2 numbers that multiply to 56 and add to -15 (-8,-7)
therefore, the factored version is (n-7) (n-8)
:)

You might be interested in

The function q = 230,000 -28p is a demand function which expresses the quantity demanded of a product q as a function of the pri

avanturin [10]

Answer:

D=[0, 8 214.29]

R=[0, 230 000]

Step-by-step explanation:

In order to find the domain, we must think of the least price you can give to the product you are selling. The price cannot be less than zero, since that would mean that you are giving money to the consumer for taking the product away, so zero is the smallest value p can get.

The greatest value the price can get is the one such that the quantity demanded is zero. So we need to determine that price by setting the equation equal to zero and solving for p.

230,000-28p=0

so we get

-28p=-230,000

$p=\frac{-230,000}{-28}$

so

p=$8,214.29

so the restricted domain for this function would be:

$0\leq p \leq 8,214.29$

or in interval notation:

D=[0, 8 214.29]

In order to find the range, we just need to determine what's the least and greatest value the function can get. Since this is a linear function, we can find them by just substituting each of the extreme values of the domain in the function, so we get:

q=230,000-28(0)=230,000

q=230,000-28(8214.29)=0

so the range would be:

$0\leq q \leq 230,000$

or in interval notation:

R=[0, 230 000]

3 0

2 years ago

Triangle A is the pre-image in a translation, and triangle B is the image, as shown below.

vitfil [10]

Answer:6 units right

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Inez’s piggy bank has 10 quarters, 6 dimes, 3 nickels, and 2 pennies. What is the probability of Inez picking a nickel out of th

MAXImum [283]

Answer: Feel around the bottom of the pig to unplug the bottom and feel around the coins then you have the nickel

Step-by-step explanation: flip the pig un plug the socket and feel the coin

7 0

2 years ago

Please help<br><br> In which table does y vary directly with x?

grigory [225]

Answer:

Table D

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

<u><em>Verify each case</em></u>

<em>Table A</em>

For x=1, y=3

Find the value of k

$k=y/x$ -----> $k=3/1=3$

For x=2, y=9

Find the value of k

$k=y/x$ -----> $k=9/2=4.5$

the values of k are different

therefore

The table A not represent a direct variation

<em>Table B</em>

For x=1, y=-5

Find the value of k

$k=y/x$ -----> $k=-5/1=-5$

For x=2, y=5

Find the value of k

$k=y/x$ -----> $k=5/2=2.5$

the values of k are different

therefore

The table B not represent a direct variation

<em>Table C</em>

For x=1, y=-18

Find the value of k

$k=y/x$ -----> $k=-18/1=-18$

For x=2, y=-9

Find the value of k

$k=y/x$ -----> $k=-9/2=-4.5$

the values of k are different

therefore

The table A not represent a direct variation

<em>Table D</em>

For x=1, y=4

Find the value of k

$k=y/x$ -----> $k=4/1=4$

For x=2, y=8

Find the value of k

$k=y/x$ -----> $k=8/2=4$

For x=3, y=12

Find the value of k

$k=y/x$ -----> $k=12/3=4$

All the values of k are equal

therefore

The table D represent a direct variation or proportional relationship

The linear equation is $y=4x$

6 0

3 years ago

Read 2 more answers

PLS HELP MEEEEE<br><br> And please SHOW YOUR WORK

vfiekz [6]

$- 13.8 = \frac{u}{5} - 1.3$

$- 13.8 + 1.3 = \frac{u}{5}$

$- 12.5 = \frac{u}{5}$

$- 12.5 \times 5 = u$

$- 62.5 = u$

4 0

2 years ago