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2 years ago

I'm bored.....................

Mathematics

2 answers:

kogti [31]2 years ago

7 0

Answer:

same

Step-by-step explanation:

leonid [27]2 years ago

3 0

Answer:

SAME

Step-by-step explanation:

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How much money is needed to buy 1/4 pound of butter at $.92 a pound, 4 pounds of sugar at $.24 a pound, and 6 eggs at $.72 a doz

gayaneshka [121]

Answer:

E. None of these

Step-by-step explanation:

1/4 of a pound of butter costs $0.23

4 pound of sugar costs $0.96

6 eggs costs $0.36

Add those together, and you get $1.55

5 0

3 years ago

Normal Distribution. Cherry trees in a certain orchard have heights that are normally distributed with mu = 112 inches and sigma

Lubov Fominskaja [6]

Answer:

The probability that a randomly chosen tree is greater than 140 inches is 0.0228.

Step-by-step explanation:

Given : Cherry trees in a certain orchard have heights that are normally distributed with $\mu = 112$ inches and $\sigma = 14$ inches.

To find : What is the probability that a randomly chosen tree is greater than 140 inches?

Solution :

Mean - $\mu = 112$ inches

Standard deviation - $\sigma = 14$ inches

The z-score formula is given by, $Z=\frac{x-\mu}{\sigma}$

Now,

$P(X>140)=P(\frac{x-\mu}{\sigma}>\frac{140-\mu}{\sigma})$

$P(X>140)=P(Z>\frac{140-112}{14})$

$P(X>140)=P(Z>\frac{28}{14})$

$P(X>140)=P(Z>2)$

$P(X>140)=1-P(Z$

The Z-score value we get is from the Z-table,

$P(X>140)=1-0.9772$

$P(X>140)=0.0228$

Therefore, the probability that a randomly chosen tree is greater than 140 inches is 0.0228.

5 0

3 years ago

Six marbles are placed in a bag. One is green, two are yellow, and three are red. Without looking, Karen chooses one. What is th

REY [17]

Answer:

3/6 or 1/2

Step-by-step explanation:

If there is 1 green, 2 yellow, and 3 red marbles in the bag then there are 6 marbles total. She can only pull out 3 red ones seeming there are only 3 in the bag. Therefor the probability of her choosing a red marble is 3/6 or reduced to 1/2

5 0

3 years ago

Read 2 more answers

The equation and answer

dolphi86 [110]

Answer:

The correct answer is 47 degrees.

Step-by-step explanation:

Use cosine.

cos(x)= adj/hyp

cos(x)=19/28

x=arccos(19/28)

Use a calculator

x is approximately 47 degrees.

8 0

3 years ago

we choose a sample of size 100 from a population of monthly cable bills having standard deviation $20 If we assume the populatio

igor_vitrenko [27]

Answer:

0.0062

Step-by-step explanation:

Find the standard error.

σ = 20 / √100

σ = 2

Find the z-score.

z = (x − μ) / σ

z = (70 − 65) / 2

z = 2.5

Find the probability.

P(Z > 2.5) = 1 − 0.9938

P(Z > 2.5) = 0.0062

8 0

3 years ago