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3 years ago

Estimate 64,505+38,972

Mathematics

2 answers:

musickatia [10]3 years ago

7 0

64,500+38,970, I think.

olga nikolaevna [1]3 years ago

4 0

103,000 is the answer of the math problem of your question

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A shoe store is selling 3 pairs of shoes for $26.25 . If a mother is buying 4 pairs of shoes for her children for school, how mu

elena-s [515]

Answer: $35

Step-by-step explanation: If three pairs of shoes cost 26.25 you need to divide that by 3 to get the individual price of each pair of shoes, then add the price of the shoe individually to 26.25 and you will get your answer.

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3 years ago

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If students’ scores were normally distributed and the mean was 200 with a standard deviation of 40, then what is the probability

Sonja [21]

Answer:

84%

Step-by-step explanation:

The empirical rule tells you that 68% of the standard normal distribution is within 1 standard deviation of the mean. The distribution is symmetrical, so the amount in the lower tail is (1 -68%)/2 = 16%.

Since the number you're interested in, 240, is one standard deviation above the mean (200 +40), the percentage of interest is the sum of the area of the central part of the distribution along with the lower tail:

68% + 16% = 84%.

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3 years ago

Jerald jumped from a bungee tower. If the equation that models his height, in feet, is h = –16t2 + 729, where t is the time in s

Snezhnost [94]

Answer. First option: t > 6.25

Solution:

Height (in feet): h=-16t^2+729

For which interval of time is h less than 104 feet above the ground?

h < 104

Replacing h for -16t^2+729

-16t^2+729 < 104

Solving for h: Subtracting 729 both sides of the inequality:

-16t^2+729-729 < 104-729

-16t^2 < -625

Multiplying the inequality by -1:

(-1)(-16t^2 < -625)

16t^2 > 625

Dividing both sides of the inequality by 16:

16t^2/16 > 625/16

t^2 > 39.0625

Replacing t^2 by [ Absolute value (t) ]^2:

[ Absolute value (t) ]^2 > 39.0625

Square root both sides of the inequality:

sqrt { [ Absolute value (t) ]^2 } > sqrt (39.0625)

Absolute value (t) > 6.25

t < -6.25 or t > 6.25, but t can not be negative, then the solution is:

t > 6.25

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3 years ago

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5 times 3 times 8 is the correct answer, because it's like finding the volume.<span />

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3 years ago

13. What values of x satisfy the inequality 4x + 2 > 10? *<br> What is the answer

mojhsa [17]

Answer:

Hi! The answer to your question is x > 2

Step-by-step explanation:

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3 years ago

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