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S_A_V [24]
3 years ago
13

Hellppppppp i rlly need help i need a b !!

Mathematics
1 answer:
torisob [31]3 years ago
5 0

55%

Step-by-step explanation:

-60% off $60 is 24 and 55% off $50 is $22.5

The second bar graph is correct.

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A mountain climber climbed a cliff 50 feet at a time. He did this 5 times in one day. What was the overall change in his elevati
Goshia [24]

Answer:

Step-by-step explanation:

The overall change is -150 feet. 50 times 5 is 150 feet, and the mountain climber descended. Therefore, the change is -150 feet in elevation.

4 0
3 years ago
HELP PLZ<br><br> 7k + 4s = 20<br> -8k + 2s = 10<br><br> What is the value of k?
Finger [1]
Divide 20 by 4=5
then 5 by 7=5/7

k=5/7
8 0
4 years ago
Justine and Meagan played a trivia game. Justine answered a question incorrectly and lost 7 points. Then Meagan answered correct
MAXImum [283]

Answer:

the opposite of the Justine score (-7) = Meghan  score  (7)

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Step-by-step explanation:

3 0
2 years ago
Suppose that 3 balls are chosen without replacement from an urn consisting of 5 white and 8 red balls. Let Xi equal 1 if the ith
Katarina [22]

Answer:

The joint probability mass function table is provided below.

Step-by-step explanation:

The experiment consist of drawing 3 balls from an urn containing 5 white and 8 red balls.

The random variable <em>Xi</em> is defined as follows:

<em>Xi</em> = 1; if the ith ball is white

<em>Xi</em> = 0; otherwise.

Then <em>X</em>₁ = the 1st ball is white and <em>X</em>₂ = the 2nd ball is white.

The sample space is as follows:

S = {(X₁ = 0, X₂ = 0), (X₁ = 0, X₂ = 1), (X₁ = 1, X₂ = 0), (X₁ = 1, X₂ = 1)}

Compute the probability of each event in the sample space as follows:

P(X_{1} = 0, X_{2}= 0)=\frac{8}{13} \times\frac{7}{12}=\frac{14}{39}

P(X_{1} = 0, X_{2}= 1)=\frac{8}{13} \times\frac{5}{12}=\frac{10}{39}

P(X_{1} = 1, X_{2}= 0)=\frac{5}{13} \times\frac{8}{12}=\frac{10}{39}

P(X_{1} = 1, X_{2}= 1)=\frac{5}{13} \times\frac{4}{12}=\frac{5}{39}

The joint probability mass function table is provided below.

4 0
3 years ago
A hyperbola is the set of all points in a plane such that the absolute value of the difference of the distances from two fixed p
Anna35 [415]
The answer is true, by definition, its true.
3 0
3 years ago
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