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Butoxors [25]
2 years ago
6

Find the missing value to the nearest hundredth. cos (______) = 3/7

Mathematics
1 answer:
garik1379 [7]2 years ago
8 0

Answer:

64.62

Step-by-step explanation:

cos(x)^{-1} = \frac{3}{7}

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wolverine [178]

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3 years ago
At the 6th grade school dance, there are 132 boys, 89 girls and 14 adults.
S_A_V [24]

Answer:

132:189 and

132 to 89

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I'm pretty sure

3 0
2 years ago
What is the answer to the value of y -1y + 11 - 20 is it 3 or -3
Tom [10]

Answer:

-9

Step-by-step explanation:

1y+11=20

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7 0
3 years ago
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Which system has no solution?<br> Check all that appy.
Ainat [17]
The first equation has no solution



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7 0
3 years ago
The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean 2885 and standard deviation
aliina [53]

Answer:

a.  X~N(2,885, 651)

b.  0.086291

c.  0.00058

d.  3213.10 calories

Step-by-step explanation:

a. -A normal distribution is expressed in the form X~N(mean, standard deviation).

-Let X a random variable denoting  the number of calories consumed.

-X is a is a normally distributed random variable with mean 2885 and standard deviation 651.

-This distribution is expressed as X~N(2,885, 651)

b. The probability that less than 2000 calories are consumed is calculated using the formula:

P(X

#substitute the given values in the formula to solve for P:

P(X

Hence, the probability of consuming less than 2000 calories is 0.08691

c. The proportion of customers consuming more than 5000 calories is calculated as:

P(X>x)=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(Z>\frac{5000-2885}{651})\\\\=P(z>3.2488)\\\\=1-0.99942\\\\=0.00058

Hence, the proportion of customers consuming over  5000 calories is 0.00058

d. The least amount of calories to get the award is calculated as:

1% is equivalent to a z value of 0.50399.

-We equate this to the formula to solve for the mean consumption:

0.01=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(z>\frac{\bar X-2885}{651})\\\\\1\%=0.50399 \\\\\frac{\bar X-2885}{651}=0.50399 \\\\\bar X=0.50399\times 651+2885\\\\=3213.09

Hence, the least amount of calories consumed to qualify for the award is 3213.10 calories.

8 0
3 years ago
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