Is a voluntary response sample (sometimes, always, or never) valid?

Answers

Answer 1

Answer: A voluntary response sample is always valid.

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When this 3 digit number is rounded to the nearest hundred it rounds to 900.The digit in the ones place is the fifth odd number you count beginning with 1.The sum of the digit is 22.What is the number?

Three bags of sweets weigh 6 3/4 kg. Two of them have the same weight and the third bag is heavier than each of the bags of equal weight by 1 1/5 kg. Find the weight of each bag.

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i think its wait actully nvm

3(-21)/7-12/6 need the answer

Answers

if ur equation looks like this, then the answer is -63/5 , and in decimal form the answer is -12.6 i hope this helps! !!

3 ( 2m - 1 ) - 5m ≤ -1 Please help

Answers

3 ( 2m - 1 ) - 5m ≤ -1

6m-3-5m≤ -1

m-3≤ -1

m ≤ 2

6m - 3 - 5m ≤ -1
so m = 2

A rectangular athletic field is twice as long as it is wide. If the perimeter of the athletic field is 216 yards, what are its dimensions? What is the width?

What is the length?

Answers

Assume it's width is x. The length, which is twice as long, is then 2x.
The perimeter consists of two sides that are the width, and the other two which are length, so you multiply both the width and length by two and add the products to get the perimeter. So if the perimeter is 216 yards:
2*x+2*2x=216, or 2x+4x=216
6x=216, so x=36. Twice that is 2*36=72.
The width is 36 and length is 72.

What is the mass of the 2.5 kilogram in mass in grams

Answers

Answer:

2500g

Step-by-step explanation:

In the Metric Decimal System. Each subunit (to the left) is 10 times higher or 1/10 times lower .

1Kg 1hg 1dag 1g 1dcg 1cg 1 mg

1000g 100g 10g 1g 0.1g 0.01g 0.001g

From the scheme above, we have many relations. The one that answers the question is below followed by a rule of three:

1 kg----1000g

2.5kg-----x

x=2500g

1 kg= 1000g

So to go from kilograms to grams, multiply by 1000:
2.5kg*1000= 2500 g

Answer: 2500 g

The number 6 is halfway between 4.5 and 7.5.Answer the missing numbers below.

The number 6 is halfway between 2.8 and .......
The number 6 is halfway between -12 and .......

Answers

$6=(2.8+x)/(2)\n 12=2.8+x\n x=9.2\n \n \n 6=(-12+x)/(2)\n 12=-12+x\n x=24$

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