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3 years ago

Please could someone help me

Mathematics

2 answers:

jasenka [17]3 years ago

6 0

Answer:

You have to multiply the number of miles by the amount of money per mile to figure out the cost of his journey.

BaLLatris [955]3 years ago

5 0

Answer:

hope it will helpful to youuuuuuu

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In one baseball season, Peter hit twice the difference of the number of home runs Alice hit and 6. Altogether, they hit 18 home

saw5 [17]

Below is the solution:

There are two equations to be solved here. The first one we assign variables to the home runs Peter hits, P, and Alice hits, A. P=2*(A-6) The second equation is the sum of both players home runs.P + A = 18Solving for P yieldsP=18-A We substitute the solution for P into the first equation and solve for A.(18-A) = 2*(A-6)18 - A = 2A - 123A = 30A = 10 Now that A is known, we can plug it into either equations for P to find how many home runs Peter hitsP=18 - (10) = 8orP=2((10)-4) = 8

7 0

3 years ago

Men’s heights are normally distributed with mean 69.5 inches and a standard deviation of 2.4 inches.

Basile [38]

Answer:

a. The percentage of adult men that will fit through the door without bending is 0.

b. The percentage of adult women that will fit through the door without bending is 0.

c. No, it is not adequate. There must be another technical reasons to not use a larger door.

d. The doorway height that would allow 60% of men to fit without bending is 70.1 inches.

Step-by-step explanation:

a. To fit throught the door, the height has to be under 51.6. To calculate this proportion, we have to calculate the z-score for X=51.6 for the distribution of men's height N(μ=69.5, σ=2.4).

We can calculate the z-score as:

$z=\dfrac{X-\mu}{\sigma}=\dfrac{51.6-69.5}{2.4}=\dfrac{-17.9}{2.4}=-7.4583$

$P(X$

The percentage of adult men that will fit through the door without bending is 0.

b. To fit throught the door, the height has to be under 51.6. To calculate this proportion, we have to calculate the z-score for X=51.6 for the distribution of women's height N(μ=63.8, σ=2.6).

We can calculate the z-score as:

$z=\dfrac{X-\mu}{\sigma}=\dfrac{51.6-63.8}{2.6}=\dfrac{-12.2}{2.6}=-4.6923$

$P(X$

The percentage of adult women that will fit through the door without bending is 0.

c. No, it is not adequate. There must be another technical reasons to not use a larger door.

d. We can calculate this finding a z-value z1 for which P(z<z1)=0.60.

Looking in a standard normal distribution table, the value for z1 is z1=0.25335.

Then, transforming to our adult men's height distribution, we have:

$X=\mu+z\sigma=69.5+0.25335*2.4=69.5+0.6=70.1$

The doorway height that would allow 60% of men to fit without bending is 70.1 inches.

5 0

3 years ago

I need the answer please

Stells [14]

Answer:

The 1st option

Step-by-step explanation:

Because x can be anything that's not imaginary and y has to be below 2 always because of the negative value added before the 3. Also it's impossible to reverse the sign of the negative because negative x would only result in 3 becoming a fraction.

5 0

3 years ago

Bernard ate part of a small pizza. He started with StartFraction 11 Over 12 EndFraction of a pizza but only ate Two-thirds of it

Maru [420]

Answer:

Step-by-step explanation:

3 0

2 years ago

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A snail crawled of a centimeter in 2 minutes. At that rate, how far could the snail crawl in 1

vekshin1

Answer:30 centimeters in 1 minute

8 0

3 years ago