All categories

3 years ago

(x + 1)(x + 3) + (x + 2)(x + 4)

Mathematics

2 answers:

Inga [223]3 years ago

5 0

Answer:

Step-by-step explanation:

Hello!

(x + 1)(x + 3) + (x + 2)(x + 4)

x*x = x²

x*3 = 3x

1*x = x

1*3=3

x*x=x²

x*4 = 4x

2*x= 2x

2*4 = 8

x²+3x+x+3+ x² + 4x+ 2x+ 8=

2x² + 10x+ 11

creativ13 [48]3 years ago

4 0

Step-by-step explanation:

x²+3x+x+3+x²+4x+2x+8

2x²+10x+11....then solve quadratically

You might be interested in

Urgent please!!!!!!!!!!

Jlenok [28]

Answer:

The answer shoudl be 6.2 miles

Step-by-step explanation:

6 0

3 years ago

Pre algebra help ( will give brainliest ) sorry if it's hard to see

valentinak56 [21]

It would have changed by 1/3 is ur answer

4 0

3 years ago

Read 2 more answers

You saved $140 on your new laptop because you bought it online. If this was a 20% savings from the original price, Find the orig

Elenna [48]

Let the original cost of laptop=x
Savings=20% = 20/100
Saved amount = $140
Original cost = saved amount * 1/savings
x = 140* 100/20
x = $7000

5 0

3 years ago

4. Which of the following lines is perpendicular to y = -2X + 8?

Alenkinab [10]

For this case we have to by definition, if two lines are perpendicular then the product of its slopes is -1.

That is to say:

$m_ {1} * m_ {2} = - 1$

We have the following equation:

$y = -2x + 8$

So:

$m_ {1} = - 2$

Thus:

$m_ {2} = \frac {-1} {m_ {1}}\\m_ {2} = \frac {-1} {- 2}\\m = \frac {1}{2}$

Thus, a line perpendicular to the given line must have slope $m = \frac {1} {2}.$

Option A:

$x + 2y = 8\\2y = -x + 8\\y = - \frac {1} {2} x + 4$

It is not perpendicular!

Option B:

$x-2y = 6\\2y = x-6\\y = \frac {1} {2} x-3$

If it is perpendicular!

Option C:

$2x + y = 4\\y = -2x + 4$

It is not perpendicular!

Option D:

$2x-y = 1\\y = 2x-1$

It is not perpendicular!

The correct option is option B

ANswer:

Option B

5 0

3 years ago

Emma was given 5 seashells. Each week she collected 3 more. Let w be the number of weeks Emma collects seashells and s be the nu

FinnZ [79.3K]

Answer:

s=5+3w independent variable is 5+3w. Dependent variable is s, since the total depends on the amount of weeks plus the 5 seashells from the start. s=5+4(3)=17 s=5+5(3)=20 s=5+6(3)=23 s=5+7(3)=26 s=5+8(3)=29 s=5+9(3)=32 s=5+10(3)=35

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers