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4 years ago

5x - 22 = -7 X equals what?

Mathematics

2 answers:

Doss [256]4 years ago

7 0

22+-7

=15

5 divided by 15

=3

So the answer is 3

Amiraneli [1.4K]4 years ago

3 0

Answer:

Step-by-step explanation:

5x-22 = -7

5x=15

x = 3

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Find f (-4) if f(x) = 3x - 10

Diano4ka-milaya [45]

Answer:

-22

Step-by-step explanation:

Put -4 where x is and do the arithmetic.

f(-4) = 3(-4) -10 = -12 -10

f(-4) = -22

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3 years ago

Mindy's dog ate 5/6 of a can of food. Heather's dog ate 2/3 of a can of food. How much more did Mindy's dog eat than Heather's d

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1/6 a can of dog food.

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3 years ago

$45.50, 15% markup what is the total

Evgesh-ka [11]

Answer:

$52.324

Step-by-step explanation:

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3 years ago

Read 2 more answers

Out of 5000 policies for cell phones, a company received 585 claims. The average amount paid on the claims was $80. If the annua

Ede4ka [16]

Answer:

the customer's expected value of the cellphone insurance policy is -$38.64. (Option C)

Step-by-step explanation:

Based on the data given, 585/5000 or 11.7% of the total number policies have claims. This means, 100% - 11.7% = 88.3% have not claimed their cellphone insurance.

In the chart, we are focusing on the customer's end because the question is asking for the customer's expected value↓

In the chart, if the customer has no claims, then he losses his $48. However, if he has claims, he gains $32 since $80 - 48 = $32. Also, based on the data given by the company, 88.30% have no claims and only 11.7% of the customers have claims.
To get the expected value, we will multiply -48 and 88.3% as well as 32 and 11.7%. 48 is negative because it indicates a loss.

Therefore, your Answer is -38.64

6 0

3 years ago

The J.R. Ryland Computer Company is considering a plant expansion to enable the company to begin production of a new computer pr

Solnce55 [7]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

Medium-Scale Large-Scale

Expansion Profit Expansion Profit

x f(x) y f(y)

Low 50 0.2 0 0.2

Demand Medium 150 0.5 100 0.5

High 200 0.3 300 0.3

a. Compute the expected value for the profit associated with the two expansion alternatives.

Which decision is preferred for the objective of maximizing the expected profit?

Expected value for medium scale expansion profit :

Expected value (E) = Σ(X) * f(x)

Σ[(50 * 0.2) + (150 * 0.5) + (200 * 0.3)]

= 145

Expected value for Large scale expansion profit :

Expected value (E) = Σ(X) * f(x)

Σ[(0 * 0.2) + (100 * 0.5) + (300 * 0.3)]

= 140

Medium scale expansion profit is preferred as it has the highest expected value.

b. Compute the variance for the profit associated with the two expansion alternatives.

Which decision is preferred for the objective of minimizing the risk or uncertainty?

Variance (V) = Σ(X - E)² * f(x):

Variance for medium scale expansion profit :

V = [((50-145)^2 * 0.2) + ((150-145)^2 * 0.5) + ((200-145)^2 * 0.3) = 2725

Variance for Large scale expansion profit :

V = [((0-140)^2 * 0.2) + ((100-140)^2 * 0.5) + ((300-140)^2 * 0.3) = 12400

Smaller variance is required to minimize risk, Hence, choose the medium scale expansion profit.

3 0

3 years ago