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3 years ago

A sample is treated as large sample, when its size is...

Mathematics

1 answer:

Kruka [31]3 years ago

4 0

Answer:

A sample is considered large when n≥30. is called the margin of error of the estimate.

Step-by-step explanation:

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What value would be placed in the space shown to create a perfect square trinomial?

charle [14.2K]

Answer:

1st option 9/4

Step-by-step explanation: Searched up the problem on brainly and this was the answer. Hope that helps

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2 years ago

on a map 2 inches equals 40 miles. if two cities are 15 miles apart what is the distinace between them on a map

alexandr402 [8]

On the map it’s 600 inches apart

4 0

2 years ago

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Add. 3/10+(−7/20) Enter your answer

Oliga [24]

Make the denominator the same, so multiple 3/10 by 2, which produces 6/20. Take 6/20 and subtract 7/20 because adding a negative number is the same as subtracting a positive number. the Answer is -1/20.

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3 years ago

There are 2820 cars in Farmington. The ratio of medium size cars to compacts is 7 to 5 and the ratio of compacts to full-size ca

oee [108]

Answer:

Number of full size cars = 900

Step-by-step explanation:

The ratio of medium size cars to compacts is 7 to 5 and the ratio of compacts to full-size cars is 8 to 9. Since compact cars are there in both ratios , we need to make the number in the ratio for compact cars to be the same.

$\frac{medium}{compact} = \frac{7}{5}$

Multiply by 8 on numerator and denominator

$\frac{medium}{compact} = \frac{56}{40}$

$\frac{compact}{full size} = \frac{8}{9}$

Multiply numerator and denominator by 5.

$\frac{compact}{full size} = \frac{40}{45}$

Ratio of medium, compact and full size are in ratio 56,40,45.

Total number of cars =2820.

(56 + 40 + 45)x = 2820

x = $\frac{2820}{141}$

x = 20

Number of full size cars = $20\times 45$ =900

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3 years ago

3 friends are selling items at a bake sale. May makes $23.25 selling bread. Inez sells gift baskets and make 100 times as much a

Zigmanuir [339]

Answer:

May: $23.25

Inez: $2325

Jo: $232.5

Step-by-step explanation:

Inez makes 100 times as much as May. Since May makes $23.25, move the decimal point two places to the right to multiply the number by 100. You will get $2325. Jo makes 1/10 of the money Inez makes. Pretend there is a decimal point at the end of 2325. Move the decimal point one place to the left to divide by 10. You will get $232.5.

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3 years ago

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