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Talja [164]
2 years ago
7

Find the area under the standard normal curve to the left of z=1.25.

Mathematics
1 answer:
snow_tiger [21]2 years ago
3 0

For quite some time now, calculators have had statistical functions built in.  Here we need to use the stat. function normalcdf, which has only two inputs when we're working with z scores instead of raw scores.

Here,

normalcdf(-100,1.25) = 0.894

This same result could be obtained using a table of z-scores.

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Find the amount and and compound interest on 20000 compound annually for 3 years the Tate of interest being 5%,10%and12%respecti
Setler79 [48]

The formula is principal x ( 1+ interest rate)^ number of years

5%:

20,000 x 1.05^3 = $23152.50 total

Interest = 23152.50-20000= $3,152.50

10%

20000 x 1.10^3 = $26,620.00

Interest = 26620-20000 = $6,620

12%

20000 x 1.12^3 = $28,098.56

Interest = 28098.56-20000 = $8.098.56

4 0
3 years ago
Read 2 more answers
You have 80 oz of egg noodles. You need 5 oz to make one serving of chicken noodle soup.
Colt1911 [192]
I believe that you can make at most 16 bowls of chicken noodle soup. Of course that’s what I think you are asking.
6 0
2 years ago
Find the number, if 0.7 of it is 42.
gizmo_the_mogwai [7]

Answer:

60

Step-by-step explanation:

0.7x=42

42/0.7=60

3 0
2 years ago
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1. A company produces two types of nutritional supplements; Energize and Excel. Energize contains 26 mg of vitamin A, 42 mg of v
geniusboy [140]

Answer:

1)A) Minimize C = 40x + 100y.

2) d) 7x + 8y ≤ 190, 5x + 4y ≤ 22, x ≥ 0, y ≥ 0.

3) B) Min C = 295x + 416y; s.t 23x + 15y ≥ 154, 17x + 25y ≥ 140, x ≥ 0, y ≥ 0.

Step-by-step explanation:

1) Energize pills cost 40 cents each, while Excel pills cost 100 cents each. If x represent the energize pills and y represent the excel pills, the objective function would be:

minimize cost = cost of energize pill + cost of excel pill

Minimize cost = 40x + 100y

2) Let x = the number of mountain bikes they produce, and let y = the number of racing bikes they produce.

7 hours of assemble time to produce a mountain bike and 8 hours of assemble time to produce a racing bike. Since the company has at most 190 hours for assemble time, it can be represented as:

7x + 8y≤ 190

5 hours of mechanical tuning to produce a mountain bike and 4 hours of mechanical tuning to produce a racing bike. Since the company has at most 22 hours for mechanical tuning, it can be represented as:

5x + 4y ≤ 22

Also assemble time and mechanical time must be greater than 0, hence:

x ≥ 0, y ≥ 0

3) The fieldwork constraint can be represented as:

23x + 15y ≥ 154

The time to be spent at university research center can be represented as:

17x + 25y ≥ 140

Both fieldwork time and time spent at university research center mut be greater than 0, hence:

x ≥ 0, y≥ 0

The cost equation is:

Minimize cost = 295x + 416y

5 0
3 years ago
Titus had 1/2 can of paint. He used 2/3 to paint a tabletop. What fraction of a full can of paint did Titus use?
dimaraw [331]
I think its 1 1/6 idk
7 0
3 years ago
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