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katrin2010 [14]
3 years ago
14

Add to each side x2 - 8x = 9 to complete the square.

Mathematics
2 answers:
Evgesh-ka [11]3 years ago
8 0

Answer:

the correct answer is 16

Step-by-step explanation:

Add  ⇒ 16 to each side x2 – 8x = 9 to complete the square.

just olya [345]3 years ago
4 0
25.....!!!!!!!&$(;7$;;)
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A hexagonal prism 6 ft tall with a regular base measuring 9 ft on each edge and an apothem of length 7.8 ft. How do I get the la
SIZIF [17.4K]
Given:

Hexagonal Prism dimensions: 

Altitude = 6 ft
Regular base;
side = 9 ft
apothem = 7.8 ft

The formula for the lateral surface area of a prism is

LA = P * h

where 
LA is the lateral surface area
P is the perimeter of the base
h is the height of the prism

LA = (9 ft * 6 sides) * 6 ft
LA = 324 ft^2

The formula for total surface area is 

TA = (P * h) + 2(Ab) 

where 
TA is the total surface area
Ab = Area of the base

Ab = a * P / 2
Ab = 7.8 ft * (9ft * 6) / 2
Ab = 210.6 ft^2

TA = 324 + 2(210.6)
TA = 745.2 ft^2
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8 0
3 years ago
A rectangle with an area of 81 cm² has a length that is 3 times the width. How long is the width of the rectangle? Round to the
LenaWriter [7]

Answer:

W ≈ 5.2 cm

Step-by-step explanation:

Represent the length and width by L and W respectively.

Then L * W = 81 cm^2, and L = 3W.

Substituting 3W for L in the first equation, we get:

3W * W - 81 = 0, or 3W^2 - 81 = 0.

To make it easier to find the final answer, rewrite 3W^2 - 81 = 0 as

            81

W^2 = ------- = 27

              3

Then W (the width) is the positive square root of 27, or W ≈ 5.2 cm

3 0
3 years ago
Read 2 more answers
What is the next value?<br> 1 I 2 L 3 F 4
Natalka [10]

Answer:

4E

Step-by-step explanation:

8 0
3 years ago
Samantha is making brownies for the entire staff at Arlington Elementary School
coldgirl [10]
It’s 5 boxes because..


4 x 16 = 64 so that wouldn’t be enough

However:

5 x 16 = 80 which is enough for 73 people

Hope this helps! Have a nice day :)
7 0
3 years ago
How do you divide a negative number and a positive number?
Airida [17]
When dividing a negative and a postive number, the answer will always be negative.

ex)
-4/2=-2
8 0
3 years ago
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