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3 years ago

Please help. having trouble finding the unit rate.

Mathematics

2 answers:

Yuliya22 [10]3 years ago

7 0

The unit rate is the slope. m = Δy/Δx
So you want the Δx (change in x) to be 1

point (1,15)

Svetllana [295]3 years ago

3 0

B) (1,15)

Because that point says for 1 person, the cost of the ticket will be $15 which is exactly what we want for a unit rate. That is $15 per 1 person.

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just olya [345]

Answer:

P (x= 5) = 0.0001

P(x=3) = 0.008699

Step-by-step explanation:

This is a binomial distribution .

Here p = 0.8 q= 1-p = 1-0.8 = 0.2

n= 15

So we find the probability for x taking different values from 0 - 15.

The formula used will be

n Cx p^x q^n-x

Suppose we want to find the value of x= 5

P (x= 5) = 15C5*(0.2)^10*(0.8)^5 = 0.0001

P(x=3) = 15C3*(0.2)^12*(0.8)^3 = 9.54 e ^-7= 0.008699

Similarly we can find the values for all the trials from 0 -15 by substituting the values of x =0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15.

3 0

3 years ago

Please help me, the image is attached below. It's a geometry question.

vagabundo [1.1K]

Hey there!

To start, none of these triangles appear to have a given height, only a given angle. Another thing to notice is that neither of these triangles are right. This means that you would need to use the function of sine to calculate the area of the triangle.

First, you know that the sine triangle area formula is:
A= 1/2*side*side*sin(given angle)

Knowing that the area of ΔABC is 30, the sides given are x and y, and the angle is 70, you can set up this equation:
1/2*xy*sin(70)=30

Now, solve for xy:
2(1/2*xy*sin(70)=30)
=xy*sin(70)=60
=xy=60/(sin(70))

Now, use the same formula to solve for the area of ΔPQR knowing that xy=60/(sin(70)).

1/2*60/(sin(70))*sin(110)
=30 cm squared

Therefore, the correct answer would be 30.

Hope this helps!

8 0

3 years ago

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