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xz_007 [3.2K]
2 years ago
7

What number must be added to the expression below to complete the square? х2 - 20х

Mathematics
1 answer:
DochEvi [55]2 years ago
6 0

Answer:

100

Step-by-step explanation:

This is formula fot completing the square:

(b/2)^(2)

(-20/2)^(2)

100

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What is the volume cubic inches of a box when the length is 8 inches, the width is 3 inches and the height is 10 inches?
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Answer:

240 inches cubed

Step-by-step explanation:

Volume = L x W x H

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Question 2<br> Which of the following is not shown on the scatter plot below?
Anton [14]

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Step-by-step explanation:

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Suppose u=&lt;2,−1&gt; and v=&lt;1,−8&gt; are two vectors that form the sides of a parallelogram. Then the lengths of the two di
tigry1 [53]
| u | = √(2² + (-1²)) = √5
| v | = √ ( 1² + (-8)² = √65
cos (u,v) = ( u * v ) / (| u | * | v |) =
 (2 * 1 + ( -1 ) * ( - 8 )) / √5 √ 65 = (2 + 8) / √5 √65 = 10 / (√5 √ 65 )
The length of a larger diagonal:
d 1² = | u |² + 2 |u| |v| + | v |² = 5 + (2 √5 √65 * 10 / √5 √65 )+65
d 1² = 70 + 20 = 90
d 1 = √ 90 = 3√10
d 2² = 70 - 20 = 50
d 2 = √50 = 5√2
Answer:
The lengths of the diagonals are: 3√10 and 5√2 .
8 0
2 years ago
What is the number of solutions to this system?
Elis [28]
I think it’s A because they only intersect once.
6 0
2 years ago
I wanna pass this help me please-
Simora [160]

Answer:

C

Step-by-step explanation: hope this helps :)

5 0
2 years ago
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