3 years ago

I need help what is the answer

Mathematics

1 answer:

lisabon 2012 [21]3 years ago

5 0

Answer:

Step-by-step explanation:

plug in the points for the equation on C and you'll get see that it fits

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Sarah has 25 coins that are dimes and nickels. Together they total $2.00. How many of each type does she have?

Ivanshal [37]

Answer:

15 dimes and 10 nickels

Step-by-step explanation:

15 dimes because 15 multiplied by 10 cents is $1.50

10 nickels because 10 multiplied by 5 cents is $0.50

15 x 0.10 = 1.50 10 x 0.50 = 0.50

0.50 + 1.50 = 2.00

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3 years ago

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Isla flipped a coin 30 times. The coin landed heads up 9 times and tails up 21 times.

Debora [2.8K]

Answer:

both are equal

Step-by-step explanation:

there are two side tails and heads so there a 1/2 chance it will land on heads

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3 years ago

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2 years ago

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Suppose a normal distribution has a mean of 50 and a standard deviation of 3. What is P(x≤53)?

Vera_Pavlovna [14]

Answer:

Step-by-step explanation:

Use the formula to find the z-score, then go to the table that will give you the probability that the value is less than this z-score.

$z=\frac{53-50}{3}=1$

The probability that the value lies to the left of 1 on a standard bell curve is 84.1345%, or 84%, the third choice down.

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3 years ago