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Mathematics

1 answer:

Charra [1.4K]3 years ago

6 0

The percent of variation is 85.1%. If you enter the numbers into a calculator and store the regression equation, it will be the r^2 value when calculated.

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A probability experiment will consist of selecting one of two stacks of cards, and then choosing a card at random from the stack

postnew [5]

Answer:

The probability that the red card came from the first stack is:

40%

Step-by-step explanation:

a) Data and Calculations:

Stack Red Blue Total

First 6 5 11

Second 9 0 9

Total 15 5 20

The probability of selecting from the first stack = 50% since equal opportunity is given to the two sacks.

The probability of red card from the first stack = 6/15 = 0.4 = 40%.

b) The probability that the red card came from the first stack is given by the number of red cards in the first stack divided by the number or red cards in the two stacks. This is equal to 6/15 = 0.4 or 40%.

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2 years ago

Analyze the graph of a cannonball launched from the ground with an initial velocity of 144 feet per second. The cannonball reach

MrRissso [65]

We can find that the formula is:
$h(t)=-16t^2 + 144t$

We are told that the cannonball reaches its maximum height at t = 4.5 seconds. To find the maximum height, let's just plug this into the formula:
$h(4.5) = -16(4.5)^2 + 144(4.5) = 324$

The height is 324 feet. We're done!

7 0

2 years ago

Read 2 more answers

I'm so sorry but I forgot and some of my notes are at school ( don't mind the yellow/orange high light )

Dimas [21]

Answer:

its a scalene triangle

Step-by-step explanation:

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3 years ago

How do you calculate the radius from the circumference?

torisob [31]