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3 years ago

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in a class of 30 students on average 6 will be left-handed if a class includes 27 Lefty's estimate how many students are in the

class

1 answer:

AfilCa [17]3 years ago

4 0

6/30 = 1/5

This means that 1/5 of the students in a class will be left-handed.
27*5 = 135
27/135 = 1/5

The correct answer is 135 students.

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klasskru [66]

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3 years ago

Samantha is making some floral arrangements.The table shows the prices for packs of six of each type of flower.

belka [17]

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2 years ago

In a group of people, some are in favor of a tax increase on rich people to reduce the federal deficit and others are against it

jek_recluse [69]

Answer:

There will be 8 possible outcomes.

Step-by-step explanation:

(Assume that there is no other outcome such as "no opinion" and "do not know.")

3 persons are selected at random from this group and their opinions in favor or against raising such taxes are noted.

So, the number of possible outcomes are = $2\times2\times2=8$

YYY, YYN, YNY, NYY, YNN, NNY, NYN, NNN

Y = Yes and N = No

Therefore, there will be 8 possible outcomes.

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2 years ago

25, 8, 10, 35, 5, 45, 40, 30, 20 What is the upper quartile of the data set above?A.35

Vlada [557]

<span>An upper quartile is the range of numbers above the median in a set. Thus, the numbers have to be rearranged mentally or on paper. Fortunately, there are an odd set of numbers, so one number, 25, is the median. The upper quartile is 30, 35, 40, 45.</span>

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3 years ago

Mr. Smith built a rectangular-shaped sandbox for his children, measuring 4 feet by 4 feet by 6 inches. Sand has a density of app

ehidna [41]

Answer:

To completely fill the sandbox will cost $56

Step-by-step explanation:

First, we calculate volume of the rectangular-shaped sandbox:

$V=long*with*height\\V=4feet*4feet*0.5feet\\V=8cubicfoot$

We know that density of sand is 100 pounds per cubic foot. Then, to fill the sand box that has a volume of 8 cubic foot, we calculate by rule 3:

1cubic foot..............100 pounds

8 cubic foot.............x pounds

$x=\frac{8*100}{1}$

$x=800 pounds$

We will need 800 pounds of sand to fill the sandbox, then we can calculate by rule 3 the number of bags needed and next the total cost of them:

50 pounds.......1bag

800 pounds.....x bags

$x=\frac{800*1}{50} \\x=16$

To calculate the cost:

1 bag ..................$3.50

16 bags.................$x

$x=16*3.50\\x=$56$

To completely fill the sandbox will cost $56

4 0

3 years ago