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4 years ago

13

Please help! I don't understand!

1 answer:

Vitek1552 [10]4 years ago

7 0

The answer to question #1 is 11:

√x² = √121

√x² = x
√121 = 11

So the answer is x = 11.
==========================================================

For the second question, I don't know what the exact answer is, but I do know that it is one of the options with 8/3. I can't figure this out because I don't know how to do √x³. Here was the work that I did do:

√64 8 Based on this, I would say the answer has to be positive 8/3.
------- = -----
√27 3√3

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I need help on number 2 please

lubasha [3.4K]

9 x 12 = 108
9 x 6 / 2 = 27
9 x 10 / 2 = 45

108 + 27 + 45 = 180
answer
area = 180 ft^2

3 0

4 years ago

If using the method of completing the square to solve the quadratic equation x^2 - 9x - 8 = 0, which number would have to be add

V125BC [204]

Answer:

Number: 28.25

Solution to Quadratic: $x=\frac{9}{2}\pm\frac{\sqrt{113}}{2}}$

Step-by-step explanation:

$x^2-9x-8=0$

$x^2-9x-8+28.25=0+28.25$ <-- 28.25 is the number you need to add

$x^2-9x+20.25=28.25$

$(x-4.5)^2=28.25$

$x-4.5=\pm\sqrt{28.25}$

$x=4.5\pm\sqrt{28.25}$

$x=\frac{9}{2}\pm\sqrt{\frac{113}{4}}$

$x=\frac{9}{2}\pm\frac{\sqrt{113}}{2}}$

6 0

3 years ago

What is the slope of the line that contains these points?<br><br> X 5 6 7 8<br> Y -3 -1 1 3

castortr0y [4]

The slope of the line is 2.

<u>Step-by-step explanation:</u>

The given points are (5,-3) , (6,-1) , (7,1) , (8,3).

To find the slope of the line that contain these points is calculated by the slope formula.

Slope = $(y2-y1) / (x2-x1)$

Take any two points from the given set of points.

Let,

(x1,y1) = (5,-3)

(x2,y2) = (6,-1)

Slope = $(-1+3) / (6-5)$ ⇒ 2

Therefore, the slope of the line is 2.

Similarly, the slope of the line can be known by using any two points on the line in the slope formula.

3 0

3 years ago

Luke and Matthew ran a lemonade stand on Saturday they agree that Matthew would get 60% of the profit because the lemonade stand

cupoosta [38]

0.6 times 25 = 15

Matthew gets $15

Luke gets $10

Hope this Helps!

8 0

3 years ago

Drag the tiles to the correct boxes to complete the pairs.

lianna [129]

Answer:

i dont get how this is a math question

and can you post a screenshot so i can understand it better

Step-by-step explanation:

6 0

3 years ago