Answer:
D
Step-by-step explanation:
The area of a rectangle is given by the formula:

So, we are given that the area is:

And the width is:

And we want to find the length. To do so, first substitute the expressions into the equation:

Thus, to find the length, divide by (x²+3):

So, factor the numerator:

From the first two terms, factor out a x^2.
From the third and fourth terms, factor out a 3:

Combine:

Putting this back:

Cancel:

And that's our answer :)
I believe it would be D.
Answer:
Roughly 18,000
Step-by-step explanation:
When you need to do rough mental math, you can do something like 720 vs 25 or 30 which is pretty simple to do in your head.
If you are very proficient in mental math, you can do something like 720 * 25, which is harder, but if you know the tricks, you can do this quickly.
720 * 25
Multiply 25 by 7.
175
Add two zeros.
17,500
Multiply 25 by 2
50
Add a zero.
500.
17500 + 500 = 18000
The answer is 600
25 x 4 =100
150 x 4 = 600
checking work
.25 x 600= 150
Answer:
3. Option No. 2:
6x + 2y = 22
3x + 3y = 18
4. Option No. 2:
$2.50
Step by step explanation:
4. 6x + 2y = 22
(3x + 3y = 18) * 2
- Negate
6x + 2y = 22
6x + 6y = 36
2y - 6y = 22 - 36
-4y = -14
y = -14/-4
y = 3.5
An order of onion rings = $3.50
- Substitute to find for x
6x + 2(3.5) = 22
6x + 7 = 22
6x = 22 - 7
6x = 15
x = 15/6
x = 2.5
An order of French fries = $2.50
Answer:
7×7+7
49+7
=56
order of operations multiply first then add