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3 years ago

Hi please help me I'm not that good in math sooooo ya

Mathematics

1 answer:

o-na [289]3 years ago

3 0

A=48un^2. You draw two auxiliary lines separating the trapezoid into 2 triangles and a rectangle. The graph shows that each unit =2 so when finding the lengths, multiply by two. For example, from T to A, there are 4 units but it’s really 8. Then you just solve the area for each shape and them. You get 8+32+8 which is 48. I’m not that good at explaining so hopefully the picture I added helps you further understand.

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Suppose that demand in period 1 was 7 units and the demand in period 2 was 9 units. Assume that the forecast for period 1 was fo

Zepler [3.9K]

Answer:

Step-by-step explanation:

Forecast for period 1 is 5

Demand For Period 1 is 7

Demand for Period 2 is 9

Forecast can be given by

$F_{t+1}=F_t+\alpha (D_t-F_t)$

where

$F_{t+1}=Future Forecast$

$F_t=Present\ Period\ Forecast$

$D_t=Present\ Period\ Demand$

$\alpha =smoothing\ constant$

$F_{t+1}=5+0.2(7-5)$

$F_{t+1}=5.4$

Forecast for Period 3

$F_{t+2}=F_{t+1}+\alpha (D_{t+1}-F_{t+1})$

$F_{t+2}=5.4+0.2\cdot (9-5.4)$

$F_{t+2}=6.12$

8 0

3 years ago

40% of _ =$10:00 A $0.25 B $4.00 C $25.00 D $40.00 E none of these

True [87]

B $4.00
...............

4 0

3 years ago

Read 2 more answers

How to graph 2y-10x=20

aksik [14]

First, put it into slope/intercept form so you can see what you've got.

"Slope/intercept form" is  y = everything else .

So that means you have to take the equation you have and "solve it for 'y' ".

2y - 10x = 20

Add 10x to each side: 2y = 10x + 20

Divide each side by 2 :  y = 5x + 10

There it is.
Now that you have it in that form, you can just look at it and see that the
slope of the line on the graph is 5, and the line crosses the y-axis at 10.

And that's exactly the information you need to graph it. On your graph,
mark a little dot on the y-axis at 10, and draw a line through that dot
with a slope of 5.

5 0

3 years ago

An insurance company divides its policyholders into low-risk and high-risk classes. 60% were in the low-risk class and 40% in th

AleksAgata [21]

Answer:

a). 0.294

b) 0.11

Step-by-step explanation:

From the given information:

the probability of the low risk = 0.60

the probability of the high risk = 0.40

let $C_o$ represent no claim

let $C_1$ represent 1 claim

let $C_2$ represent 2 claim :

For low risk;

so, $C_o$ = (0.80 * 0.60 = 0.48), $C_1$ = (0.15* 0.60=0.09), $C_2$ = (0.05 * 0.60=0.03)

For high risk:

$C_o$ = (0.50 * 0.40 = 0.2), $C_1$ = (0.30 * 0.40 = 0.12) , $C_2$ = ( 0.20 * 0.40 = 0.08)

Therefore:

a), the probability that a randomly selected policyholder is high-risk and filed no claims can be computed as:

$P(H|C_o) = \dfrac{P(H \cap C_o)}{P(C_o)}$

$P(H|C_o) = \dfrac{(0.2)}{(0.48+0.2)}$

$P(H|C_o) = \dfrac{(0.2)}{(0.68)}$

$P(H|C_o) = 0.294$

b) What is the probability that a randomly selected policyholder filed two claims?

the probability that a randomly selected policyholder be filled with two claims = 0.03 + 0.08

= 0.11

7 0

3 years ago

In order for a vaccine to be effective, it should reduce a person's chance of acquiring a disease. Consider a hypothetical vacci

Dmitrij [34]

Answer:

Step-by-step explanation:

Let assume that Suppose the chance of contracting malaria is 10% for those who are not vaccinated ; (since the value) is not given.

Thus;

If the vaccine has no effect, risk of malaria for vaccine and no vaccine are equal to 0.1

Probability of not getting malaria if vaccinated or no vaccinated = 1 - 0.1 = 0.9

Malaria No Malaria Total

Vaccinated 100 * 0.1 = 10 100 * 0.9 = 90 100

No Vaccine 200 * 0.1 = 20 200 * 0.9 = 180 300-100 = 200

Total 20 + 10 = 30 90 + 180 = 270 300

If the vaccine cuts the risk by half, risk of malaria for vaccinated are equal to 0.1/2 = 0.05

Probability of not getting malaria if vaccinated = 1 - 0.05 = 0.95

Malaria No Malaria Total

Vaccinated 100 * 0.05 = 5 100 * 0.95 = 95 100

No Vaccine 200 * 0.1 = 20 200 * 0.9 = 180 300-100 = 200

Total 20 + 5 = 25 90 + 180 = 275 300

3 0

3 years ago