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wariber [46]
4 years ago
11

Need help with some financial math can you help.? atleast with 4

Mathematics
1 answer:
maria [59]4 years ago
5 0
Here are 4 questions I answered

You might be interested in
A well-mixed cookie dough will produce cookies with a mean of 66 chocolate chips apiece. What is the probability of getting a co
sp2606 [1]

Answer:

0.7262

Step-by-step explanation:

Let random variable = X

Probability of getting a cookie with at least 55 chips:

P(55≤ X ≤78), where X1 = 55 and X2 = 78

Let mean, U = 66 and  standard deviation, S.D. = 10

Let Z = X - U/S.D; Z1 = X1 - U/S.D and Z2 = X2 - U/S.D

Z1 = 55 - 66/10 = - 1.1

Z2 = 78 - 66/10 = 1.2

P(X1≤ X ≤ X2) = P(X1 -U/S.D ≤ X - U/S.D ≤ X2 - U/S.D)

P(Z1 ≤ Z ≤ Z2) = P(0 ≤ Z ≤ Z1) + P(0 ≤ Z ≤ Z2)

Hence, (55 ≤ X ≤ 78) = P( - 1.1 ≤ Z ≤ 1.2)

∴ P(-1.1 ≤ Z ≤ 1.2) = P(0 ≤ Z ≤ 1.1) + (0 ≤ Z ≤ 1.2)

=   0.3413 + 0.3849 = 0.7262

6 0
3 years ago
Farmer Bill sold potatoes at the farm market. He sold a quarter to the first person, 4/9 of what was left to the second person,
Lelu [443]

Answer:

<em>Farmer Bill sold 120 lb of potatoes</em>

Step-by-step explanation:

Suppose farmer Bill had x lb of potatoes. He sold a quarter to the first person. A quarter is written as (1/4)x. After that, Bill had x-(1/4)x = (3/4)x.

Then he sold 4/9 of what was left to the second person, thus it was left 1-4/9=5/9 of the remaining potatoes. Multiplying both factors:

\frac{5}{9}*\frac{3}{4}x=\frac{5}{12}x

This is the remaining portion of the potatoes.

Finally, he sold 4/5 of it and the last 10 lb. This means 1 - 4/5 = 1/5 of the remaining is equivalent to 10 lb:

\frac{1}{5}*\frac{5}{12}x=\frac{1}{12}x

Thus:

\frac{1}{12}x=10

x = 120 lb

Farmer Bill sold 120 lb of potatoes

5 0
3 years ago
Little Joey can finish carpeting ½ of a room in ¼ of an hour. At this rate, how many rooms can he carpet in 1 hour?
mezya [45]

Answer:

2 rooms

Step-by-step explanation:

1/2 divided by 1/4 is 2

2 times 1 = 2

Answer - 2

5 0
3 years ago
What is the inverse of the function f(x)=x+3
Valentin [98]

Hello,

The inverse of the function is f^-1(X)=-3-x

How?

f (x)=-x-3

replace f(X) with y

y=-x-3

interchange the variables

x=-y-3

solve for y and replace f^-1 (X)


Hope this helps


4 0
4 years ago
Read 2 more answers
A pair of shoes is on sale for 15% off. With this discount,customers will save $9 if they buy the shoes.
jekas [21]

Answer:12.54

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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