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3 years ago

PLS HELP ASAP

Mathematics

1 answer:

posledela3 years ago

8 0

Answer:

b67

Step-by-step explanation:

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A factory wants to redesign a box that will hold twice as many unit cubes add a box that measures 2 by 3 by 4 unit cubes.What ar

iragen [17]

finding the volume of cube is equal to 2 × 3 × 4

v of cubes is 24

now

twice of it is 2 ×24

8 0

3 years ago

The average life of individual is 70 years. With a standard deviation of 5.5 years. Assume that the lives of these individuals i

Harlamova29_29 [7]

Answer:

The answer is below

Step-by-step explanation:

Given that:

mean (μ) = 70 years, standard deviation (σ)= 5.5 years.

a) The z score measures how many standard deviation a raw score is above or below the mean. It is given as:

$z=\frac{x-\mu}{\sigma}$ , for a sample size of n, the z score is: $z=\frac{x-\mu}{\sigma/\sqrt{n} }$

Given a sample of 5 turtles, we have to calculate the z score for x = 60 and x = 80.

For x = 60:

$z=\frac{x-\mu}{\sigma/\sqrt{n} }=\frac{60-70}{5.5/\sqrt{5} } =-4.07$

For x = 80:

$z=\frac{x-\mu}{\sigma/\sqrt{n} }=\frac{80-70}{5.5/\sqrt{5} } =4.07$

The probability that a mean life of a random sample of 5 such turtles falls between 60 and 80 years = P(60 < x < 80) = P(-4.07 < z < 4.07) = P(z < 4.07) - P(z < -4.07) = 1 - 0 = 1 = 100%

b) The z score that corresponds to top 10% is -1.28.

$z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\-1.28=\frac{x-70}{5.5/\sqrt{5} }\\ x-70=-3\\x=70-3\\x=67\ years$

3 0

3 years ago

(pls this is the last one)Use the image below to find the experimental probability of rolling a number less than 7.

Leni [432]

Answer:

$\frac{6}{7}$

Step-by-step explanation:

For this problem, the fraction is out of 7 so all the values less than 7 is 1-6. So the probability is going to be $\frac{6}{7}$

Hope this helps.

6 0

3 years ago

Read 2 more answers

F(x) = -2x²-2x+10, find f(2)

beks73 [17]

Answer:

f(2) = -2

Step-by-step explanation:

Substitute 2 everywhere you see an x so f(2) = -2( $2^{2}$ ) - 2(2) + 10 so

f(2) = -2(4) - 4 + 10, so f(2) = -8-4+10, f(2) = -12+10, f(2) = -2

3 0

3 years ago

I neep help asap deadline 4:00pm

shutvik [7]

Answer: B each charm costs 15 dollars

Step-by-step explanation: because each money increment is 15$ so the answer is $15

~Brainliest would be appreciated

5 0

3 years ago