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3 years ago

8

bruce sees 29 oak trees and 4 maple trees at the park . then he sees double the number of pine trees as maple trees. how many tr

ees does bruce see?

1 answer:

andreyandreev [35.5K]3 years ago

3 0

He see's 37 because 4x2= 8 and 29=8=37

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4 years ago

What is the definition for a line segment

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3 years ago

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3 years ago

Andrea rode her bike 3 23rds miles on saterday and 4 56 miles on sunday. how far did she bike in all

Tpy6a [65]

Answer:

8 1/2 miles

Step-by-step explanation:

Please use " ' " to indicate fractions:

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3 4/6

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3 years ago

Mileage tests are conducted for a particular model of automobile. If a 98% confidence interval with a margin of error of 1 mile

Llana [10]

Answer: 37

Step-by-step explanation:

Given : Significance level : $\alpha:1-0.98=0.02$

Critical value : $z_{\alpha/2}=z_{0.01}=2.33$

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Population standard deviation: $\sigma=2.6$ miles per gallon.

We know that when the population standard deviation is known then the formula to find the sample size is given by :

$n=(\dfrac{z_{\alpha/2}\times \sigma}{E})^2$

$n=(\dfrac{(2.33)\times 2.6}{1})^2=36.699364\approx37$ [Round to the next whole number.]

Hence, the required number of automobiles should be used in the test = 37

7 0

4 years ago