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3 years ago

Does anyone know how to answer these?? Need this before tomorrow

Mathematics

1 answer:

Rudik [331]3 years ago

7 0

This isnt an answer sorry but use photomath. ot works and you take a picture and it answers immediately.

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The diameters of Douglas firs grown at a Christmas Tree Farm are normally distributed with a mean of 4 inches and a standard dev

leva [86]

Answer:

The proportion of trees greater than 5 inches is expected to be 0.25 of the total amount of trees.

Step-by-step explanation:

In this problem we have a normal ditribution with mean of 4.0 in and standard deviation of 1.5 in.

The proportion of the trees that are expected to have diameters greater than 5 inches is equal to the probability of having a tree greater than 5 inches.

We can calculate the z value for x=5 in and then look up in a standard normal distribution table the probability of z.

$z=\frac{x-\mu}{\sigma}=\frac{5-4}{1.5}=0.67$

$P(x>5)=P(z>0.67)=0.25$

The proportion of trees greater than 5 inches is expected to be 0.25 of the total amount of trees.

8 0

3 years ago

HELP PLEASE! QUICK AND EASY POINTS! USE THE IMAGE PROVIDED!!

Pavel [41]

Answer: 4.8 and 3.2

7 0

3 years ago

Read 2 more answers

if a soup recipe calls for 1 cup of carrots for every 3 cups of chicken how many cups of carrots are needed if we have 18 cups o

grandymaker [24]

Answer:

Hello this is your answer

You would need 6 cups of carrots for 18 cups of chicken!

Have a wonderful day :)

7 0

3 years ago

Read 2 more answers

Ethan and Emily went shopping at a local farmers’ market. They both bought the same type of apples and potatoes at the same stan

Effectus [21]

<h3>Ordered pair representing the price per pound of apples, x, and potatoes, y is (2.5, 1.1).</h3>

Step-by-step explanation:

Let us assume that the cost of per pound of apples = $ x

Assume that the cost of per pound of potatoes = $ y

Now, according to question:

The cost of 8 pounds of apples and 5 pounds of potatoes = $25.50

⇒ Cost of 8 pounds of Apple + Cost of 5 pounds of potatoes = $25.50

⇒ 8 x (Cost of 1 pound apple) + 5 x ( cost of 1 pound potato ) = $25.50

⇒ 8 x + 5 y = $25.50 .... (1)

⇒ 5 y = 25.5 - 8 x

Similarly,

The cost of 3 pounds of apples and 10 pounds of potatoes = $18.50

⇒ 3 x + 10 y = $18.50 .... (2)

or, 1.5 x +5 y = $ 9.25 ( dividing the equation by 2)

⇒ 5 y = 9.25 - 1.5 x

Now, comparing both equations,we get:

25.5 - 8 x = 9.25 - 1.5 x

⇒ 25.5 - 9.25 = 8 x - 1.5 x

⇒ 16.25 = 6.5 x

⇒ x = 2.5

Putting this value of x in 5 y = 9.25 - 1.5 x, we get:

5 y = 9.25 - 1.5 (2.5)

⇒ 5 y = 5.5

⇒ y = 1.1

So, the cost of 1 pound of apples = $2.5

The cost pf 1 pound of potatoes = $1.1

The ordered pair (x,y) is given as : (x,y) = (2.5,1.1)

3 0

4 years ago

Write the equation of each line in slope-intercept form

LuckyWell [14K]

Answer:

the 2nd one is -2/2 so the equation would be y=-2/2x+4 the 1st it's kinda blurry it fades away.... but for the 1st one the y- int. is 2 so it would be

y= slope x +2

4 0

3 years ago