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2 years ago

Who ever gets this right correctly I’ll mark as the BRAINLY I need this ASAP X*2-10

Mathematics

1 answer:

harkovskaia [24]2 years ago

4 0

(x+sqrt10)(x-sqrt10) is the factored form.

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What is the constant of variation, k, of the direct variation, y = kx, through (–3, 2)?

anygoal [31]

Answer:

k = 2/-3

Step-by-step explanation:

y = kx

Point: (-3, 2)

2 = k(-3)

k = 2/-3

k = -0.6

5 0

3 years ago

Give the domain and range of the relation (10,-3),(12,3),(-8,-7),(6,-1)

Iteru [2.4K]

Domain: {10, 12, -8, 6}

Range: {-3, 3, -7, -1}

There is one value of <em>y</em><em> </em>for every value of <em>x</em>.

This relation is a function.

6 0

2 years ago

Tell whether the indicated angles are adjacent.

Semenov [28]

Answer: 3 would be a adjacent angle

Step-by-step explanation:

They don’t overlap

4 0

3 years ago

The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The

zavuch27 [327]

The standard deviation of the frequency distribution is 5.54

<h3>How to determine standard deviation?</h3>

The table of values is given as:

x f(x)

0-3 13

4-7 13

8-11 10

12-15 11

16-19 0

20-23 3

Rewrite the table by calculating the class midpoints:

x f(x)

1.5 13

5.5 13

9.5 10

13.5 11

17.5 0

21.5 3

Start by calculating the mean using:

$\bar x = \frac{\sum fx}{\sum f}$

This gives

$\bar x = \frac{1.5 * 13 + 5.5 * 13 + 9.5 * 10 + 13.5 * 11 + 17.5 * 0 + 21.5 * 3}{13 + 13 + 10 + 11 + 0 +3}$

Evaluate

$\bar x = 7.98$

The standard deviation is then calculated as:

$\sigma = \sqrt{\frac{\sum f(x - \bar x)^2}{\sum f }}$

So, we have:

$\sigma= \sqrt{\frac{13 * (1.5 - 7.98)^2 + 13 * (5.5 - 7.98)^2 + (9.5 - 7.98)^2 * 10 + (13.5 - 7.98)^2 * 11 + (17.5 - 7.98)^2 * 0 + (21.5 - 7.98)^2 * 3}{13 + 13 + 10 + 11 + 0 +3}}$

Evaluate

$\sigma= \sqrt{30.6496}$

Solve

$\sigma= 5.54$

Hence, the standard deviation is 5.54

Read more about standard deviation at:

brainly.com/question/15858152

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7 0

1 year ago

PLEASE ANSWER FAST !!

emmainna [20.7K]

Answer:

Obviously condensation

Step-by-step explanation: because it is

7 0

2 years ago