3 years ago

(short answers plzz)

Mathematics

1 answer:

pickupchik [31]3 years ago

4 0

Answer:

1) quadrants 1 and 3

2) quadrants 2 and 4

Step-by-step explanation:

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Estimate the value of 96.8×9.74

irina [24]

Answer: Estimate : 1000 Exact : 942.83

Step-by-step explanation:

The estimate is 1000 because 96.8 is rounded to 100 and 9.74 is rounded to 10, so 100 times 10 is 1000. If you wanted the exact, then the exact is 942.83200, If you simplify this total, then the final answer is 942.83.

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1 year ago

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Julli [10]

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3 years ago

The price of a pair of shoes increases from $55 to $77. What is the percent increase to the nearest percent?

Rom4ik [11]

Answer:

40%

Step-by-step explanation:

40% of 55 is 22 and 55+22=77

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

margin of error : E= 1 mile per gallon

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

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3 years ago

Write three different sentences that could describe the relationship between the quantities $27, $81

Olenka [21]

1) 27+x=81
2)27+81=108
3)81-x=27

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3 years ago