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3 years ago

I need help with this

Mathematics

1 answer:

azamat3 years ago

4 0

Answer:

Let the amount of Danny be y

Therefore, lance will have 1/3y

Total fraction of cup is 1/1

y+y/3=1

4y/3=1

4y=3

y=3/4

therefore, lance had 3/4 of the cup of water

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maks197457 [2]

150 * 1.25 * 1.25* 1.25 = £292.97
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6 0

3 years ago

A random number is selected from the interval [6.35, 10]. Find the probability that the number is within a distance of 0.25 from

exis [7]

Let X be a random number selected from the interval. Then the probability density for the random variable X is

$f_X(x)=\begin{cases}\dfrac1{10-6.35}=\dfrac1{3.65}\approx0.2740&\text{if }6.35\le x\le 10\\0&\text{otherwise}\end{cases}$

8 and 10 are the only even integers that fit the given criterion (6 is more than 0.25 away from 6.35), so that we're looking to compute

P(|X - 8| < 0.25) + P(|X - 10| < 0.25)

… = P(7.75 < X < 8.25) + P(9.75 < X < 10.25)

… = P(7.75 < X < 8.25) + P(9.75 < X < 10)

(since P(X > 10) = 0)

… = 0.2740 (8.25 - 7.75) + 0.2740 (10 - 9.75)

… = 0.2055

6 0

3 years ago

Find the x and y intercepts of 4y = x 9

leonid [27]

4y=x+9
x-intercept (-9,0)
y-intercept (0,9/4)
4y=x-9
x-intercept (9,0)
y-intercept (0,-9/4)

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3 years ago

Is y = -x a proportional relationship

Karo-lina-s [1.5K]

Answer:

For any proportional relationship, k=yx (such as a line that passes through the origin). Find the equation of the line by solving for y in the constant of proportionality equation. This equation y=kx is another representation of a proportional relationship.

Step-by-step explanation:

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rusak2 [61]

Can you post a picture of the question?

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I need help with this​

I need help with this