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3 years ago

8. (8G5) Using the diagram shown, find the value x and the value of y.

Mathematics

1 answer:

Alenkasestr [34]3 years ago

4 0

Answer:

interchangable parts, telephone, light bulb, railways, steam engines

Step-by-step explanation:

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I have 3 questions.

mote1985 [20]

Similar triangles are scales drawing of one another is true, what is the slope of this equations is undefined, to what line equation does the points are solution of sets are,35 the answer

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2 years ago

A bag contains 6 red marbles, 10 white marbles, and 7 blue marbles. You draw 4 marbles out at random, without replacement. What

Lapatulllka [165]

Answer:

3/1771

Step-by-step explanation:

Probability is the chance or likelihood that an event will occur.

Probability = expected outcome/total outcome

Total outcome = total number of marbles

Total outcome = 6+7+10 = 23marbles

If four marbles are drawn, the probability that they are all red is expressed as;

Pr(picking the first red marble) = 6/23

Since it is without replacement, the total marble becomes 22

Pr(picking the second) = 5/22

Pr(picking the third marbles = 4/21

Pr(picking the 4th marble) = 3/20

Note that the number of red marbles keep reducing and the total marble keep reducing as well.

Pr(picking the 4marbles) = 6/23×5/22×4/21×3/20 (we multiplied because or is an independent events)

Pr(picking the 4marbles) = 360/212520

Pr(picking 4 red marbles) = 72/42504 =36/21,252

= 9/5313

= 3/1771

Hence the probability of picking 4 marbles at random without replacement is 3/1771

4 0

3 years ago

Helen is preparing candy bags for the children at a party. she has 12 flavors of lollipops, 4 types of candy bars, and 6 flavors

castortr0y [4]

Your answer would be 48

3 0

2 years ago

Given the function f(x)=x^2 and I= -3, which of the following represents a vertical shift

Anika [276]

Answer:

See below.

Step-by-step explanation:

You haven't supplied a list but one option could be f(x) - l or x^2 - l.

This represents a vertical shift of 3 units downwards.

3 0

3 years ago

Delta Airlines quotes a flight time of 2 hours, 5 minutes for its flights from Cincinnati toTampa. Suppose we believe that actua

siniylev [52]

Answer:

a) The graph of the probability density function for flight time is shown below.

b) 1/2

c) 0

d) 130 minutes

Step-by-step explanation:

Let's deal with the flight times in minutes instead of hours, and let T be the random variable that represents the flight time. T is uniformly distributed between 120 minutes and 140 minutes. The probability density function for T is given by

$f(t)=\frac{1}{140-120}=\frac{1}{20}$ for t in [120, 140]

a) The graph of the probability density function for flight time is shown below.

Delta Airlines quotes a flight time of 125 minutes for its flights from Cincinnati to Tampa.

b) The probability that the flight will be no more than 5 minutes late is given by

$P(T \leq 125 + 5) = P(T \leq 130) = \int\limits_{120}^{130}\frac{1}{20}dt = \frac{1}{20}(130-120)= \frac{1}{20}(10) = \frac{1}{2}$

c) The probability that the flight will be more than 10 minutes late is given by

$P(T \geq 125 + 10) = P(T \geq 135) = 0$ because the probability density function is zero for t outside of [120, 140]

d) The expected flight time is given by $E(T) = \frac{120+140}{2} = \frac{260}{2} = 130$ minutes

8 0

3 years ago