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lions [1.4K]
3 years ago
11

X^2-18x-6. complete the square ​

Mathematics
2 answers:
USPshnik [31]3 years ago
8 0

Answer:

(x - 9)² = 87

Step-by-step explanation:

Move the -6 to the other side

x² - 18x = 6

The number you add to each side is (b/2)²

(b/2)² is (-18/2)² = 81

x² - 18x + 81 = 87

(x - 9)² = 87

vlabodo [156]3 years ago
6 0

Answer:

(x-9)^2-87

Step-by-step explanation:

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Rewrite in simplest terms: -4(5v – 3v – 6) – 9v
julsineya [31]

Answer:

-4 (5v -3v -6) -9v (use the distributive property)

-20v +12v +24 -9v (combine all like terms)

-17v +24

3 0
3 years ago
Read 2 more answers
Two cylinders are similar. The radius of cylinder a is 5.6 in. The radius of cylinder b is 1.4 in. If the hwight of cylinder b i
sleet_krkn [62]
The answer is 16in.

Let the radius and height of cylinder A be Ra and Hb respectively and the radius and height of cylinder B be Rb and Hb respectively.

Using similar shapes:
Ra/Ha= Rb/Hb
5.6/Ha=1.4/4
Ha=(4×5.6)/1.4
Ha=22.4/1.4
Ha=16in
6 0
3 years ago
Christian randomly selects students from his grade to rate a math test as easy, moderate, or difficult. Of the students he surve
IRINA_888 [86]

Answer:

84

Step-by-step explanation:

Total students he surveyed: 27

Amount that found it something OTHER than easy: 14 (11 moderate + 3 difficult)

This means that \frac{14}{27} found it something other than easy

Multiply that by 162 to find the proportion for the larger population:

162 * (14/27), and we get 84.

4 0
2 years ago
QUESTIUN 5
IRINA_888 [86]
It has to be true because
3 0
3 years ago
What is the value for y in the following equation when x = -10?
nadezda [96]

Answer:

B.-38

Step-by-step explanation:

2x - 18 = y ...(1)

x = -10 (Given)

Now,

Put the value of x in equation (1) we get,

2(-10) - 18 = y

-20 - 18 = y

-38 = y

<em><u>y = -38</u></em>

Thus, the value of y is -38

6 0
3 years ago
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