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3 years ago

Factor by using the difference of two squares formula. x²-9 PLEASE HELP!

Mathematics

1 answer:

Sauron [17]3 years ago

7 0

(x+3)(x+3)
is the answer because both terms are perfect squares

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one month Chris rented 2 movies and 12 video game for a total of $44. The next month he rented 5 movies and 3 video games for a

Neporo4naja [7]

If we set movies as x, video games as y

We can write the equation down below

2x + 12y = 44

5x + 3y = 29

After you solve the equation, you will find out x = 4, and y = 3

And x represents the movies, y represents video games.

Hope that helps you :D

4 0

3 years ago

Please help quickly for 5 stars and brainliest!!

alexandr402 [8]

1.
Height h = 240 feet
We insert it into formula.
$240 = -16 t^{2} +128t$
Now we solve this for t:
$16 t^{2} -128t +240 = 0 /16 \\ t^{2} - 8t +15 =0 \\ t_{1} = 5 t_{2} = 3$

We have two answers as the rocket will pass this height on it's way up and down.

2.
Height h = 0 feet
We insert it into formula.
$0=-16 t^{2} +76t + 2$
Now we solve this for t:
$16 t^{2} - 76t -2 = 0 /2 \\ 8t^{2} - 38t - 1 = 0 \\ t_{1} = 5 t_{2} = -1$
We do not consider solution -1 as the time can not be negative. Our solution is 5s.

3.
Height at bottom of hill h = 0 feet
We insert it into formula.
$v^{2} = 64 * 0 = 0 ft/s$

7 0

4 years ago

PLEASE HELP ME!!!!!!!!!!! PLZ

irina1246 [14]

Answer:

1/16

Step-by-step explanation:

1/2 divided by 8= 0.0625

There is not much that can be done to figure out how to write 0.0625 as a fraction, except to literally use what the decimal portion of your number, the .0625, means.

Since there are 4 digits in 0625, the very last digit is the "10000th" decimal place.

So we can just say that .0625 is the same as 0625/10000.

The fraction is not reduced to lowest terms. We can reduce this fraction to lowest

terms by dividing both the numerator and denominator by 625.

Why divide by 625? 625 is the Greatest Common Divisor (GCD)

or Greatest Common Factor (GCF) of the numbers 625 and 10000.

So, this fraction reduced to lowest terms is

So your final answer is: 1/16

3 0

3 years ago

Read 2 more answers

The of the sum of three and a number is twice the number minus two<br> please help

hjlf

Answer:

x=5

Step-by-step explanation:

Set up the equation using the words literally, making x the number. 3+x= 2x-2

Combine like terms and you get 5=x

I hope this helped! :)

5 0

3 years ago

~A line at Busch Gardens moves 25 feet every 8 minutes. How long will it take to reach the ride entrance 300 feet away?

ruslelena [56]

Answer:

Step-by-step explanation:

Step-by-step explanation:

3x+x=180

4x=180

x=45

Hope this helps hit the crown :D

5 0

3 years ago

Read 2 more answers