3 years ago

Scott sends an email to 3 people and each of those people will send the email to 3 more people, and so on. Which

Mathematics

1 answer:

Naddika [18.5K]3 years ago

5 0

Answer:

12 I think I counted it hope it's correct

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Given the equation 25x^2y^2-40xy+16=0, find the value of xy.

Volgvan

Answer:

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2 years ago

In what ways do you follow a healthy diet?

andrey2020 [161]

By eating healthy and constantly working out

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3 years ago

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You measure 20 turtles' weights, and find they have a mean weight of 45 ounces. Assume the population standard deviation is 11.5

Naily [24]

Answer: the maximal margin of error associated with a 90% confidence interval for the true population mean turtle weight = 4.23

Step-by-step explanation:

Formula for margin of error : $E=\dfrac{z^*\times (Population\ standard\ deviation)}{\sqrt{Sample\ size}}$

, where z* = Critical z-value.

Given: population standard deviation = 11.5 ounces

Sample size = 20

Z value for 90% confidence level = 1.645

margin of error (E) = $\dfrac{1.645\times11.5}{\sqrt{20}}$

$\approx4.23$

Hence, the maximal margin of error associated with a 90% confidence interval for the true population mean turtle weight = 4.23

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3 years ago

Colton earns $7 per hour plus $1.50 for each pizza delivery. The expression 7h + 1.50d can be used to find the total earings aft

Rina8888 [55]

Since the expression 7h + 1.50d can be used to find the total earnings. We just need to substitute the given data to the expression to solve the problem.

7(15) + 1.50(8)
105 + 12 = 117

Colton's total earnings after working 15 hours and making 8 deliveries is 117 dollars.

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3 years ago

Matthew uses this scale model of a design he plans to paint on a wall. He uses the key 1 cm = 2.5 ft. One gallon of paint will c

MatroZZZ [7]

Answer:

160

Step-by-step explanation:

400 / 2.5 = 160

160 x 1 = 160

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2 years ago

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