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3 years ago

Factor xy−4y+4x−16 by grouping

Mathematics

2 answers:

maksim [4K]3 years ago

6 0

Answer:

$(y+4)(x-4)$

Step-by-step explanation:

Given the expression:

$xy-4y+4x-16$

$(xy-4y)+(4x-16)$

Take the common factor

$y(x-4)+4(x-4)$

$(y+4)(x-4)$

Mariulka [41]3 years ago

4 0

Answer:

(x-4)(y+4)

Step-by-step explanation:

First you group the expression to get (xy+4x)+(-4y-16)

then factor to get x(y+4)-4(y+4)

and factor again to get (x-4)(y+4)

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Bakersfield California was founded in 1859 when colonel Thomas baker planted ten acres of alfalfa for travelers going from Visal

sergejj [24]

Answer: option c.

Step-by-step explanation:

To solve the exercise you must apply the formula given in the problem, which is the following:

$y=33,430e^{0.0397t}$

The problem asks for the projected population of Bakersfield in 2010.

Therefore, keeping on mind that t is th number of years since 1950, you have that:

$t=2010-1950\\t=60$

Substitute the value of t into the formula.

Therefore, you obtain:

$y=33,430e^{0.0397(60)}=361,931$

3 0

3 years ago

Giving 15 points for help!

kolezko [41]

Answer: The correct statements are 'The equation 2n = p should be 2p = n' , 'The actual cost of the onions is $3.00 per pound' and 'Potatoes cost $1.50 per pound.'

Step-by-step explanation:

Here, p represents cost of one potato and n represents the cost of one onion.

And, According to the question, He purchases 6 pounds of potatoes, p, and 3 pounds of onions, n, for $18.

Therefore, 6p +3n = 18 ------(1)

And, Onions cost twice as much as potatoes.

Therefore, n= 2p ---------(2)

Putting the values of n from 2) in equation 1),

we get, 6p+3(2p)=18

⇒6p+6p=18 ⇒ 12p =18 ⇒ p = 1.5 dollar.

Thus cost of one potato= $1.5

And cost of one onion = $ 2× 1.5= $ 3.00

Thus with help of above explanation we can say that Options first, third and fifth are correct.

8 0

4 years ago

Read 2 more answers

61 random samples of city rent prices are selected from a normally distributed population the samples have a mean of $738 and a

Alenkinab [10]

Answer:

(728, 748)

Step-by-step explanation:

You need the Z value which for 95% confidence interval is 1.96. The mean is $738 and the standard deviation of $41.

$X-Zs/\sqrt{n} \\ X+Zs/\sqrt{n}$

Therefore we can calculated the confidence interval

$738-1.96\cdot{41}/\sqrt{61} =738-10.3$

$738±10.3$

The interval is (728,748)

3 0

3 years ago

What is 3 times the sum of x plus 2 is less than 10 as an inequality?

erica [24]

3(x+2) < 10 //// that should be right!!

7 0

3 years ago

ASAP What is the domain?

WARRIOR [948]

real numbers hope it helps

7 0

3 years ago