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Gwar [14]
3 years ago
15

A grab-bag contains 30 packages worth $.65 each, 10 packages $.60 cents each, and 15 packages worth $.30 each. What is the expec

ted value if you have to pay $.50 to pick one package at random?
A. about -$0.03
B. about $0.11
C. about -$0.11
D. about $0.03
Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
3 0
The answer would be 0.03.
What I did was 50/15 which would get me 0.0333333333333. But since money can only the cents can only have two numbers. So it would be 0.03 as the answer. So it’s the answer d.
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8 5x=-2 whats the value of the variable?
wlad13 [49]
In order to get the value of x you have to set x by itself subtract from both sides because the only way to get rid of a positve its with a negative now you have 5x=6, now divide 5 from both sides because the only way to get rid of a multiplication is with a division, this will give you the final answer of x=6/5

Hope this helps
8 0
3 years ago
In your own words, explain the place-value relationship when the same two digits are next to each other in a multi-digit number.
marusya05 [52]
<span> It is easy the left side as to be ten times greater then your right side for example my ones place is ten times greater my tens place is ten times greater than my hundreds place and my hundreds place is ten times greater than my thousands place i hope this will help you bye </span>
6 0
3 years ago
a box contains 1 3/4 pounds of pancake mix. Jada used 7/8 pound for a recipe. What fraction of the pancake mix in the box did sh
ololo11 [35]

Answer:

Jada used 1/2 of the pancake mix in the box

Step-by-step explanation:

we know that

1\frac{3}{4}\ pounds -----> represent the 100% of the box

so

by proportion

Find what fraction represent \frac{7}{8}\ pounds

First convert mixed number to an improper fraction

1\frac{3}{4}\ pounds=\frac{1*3+4}{4}=\frac{7}{4}\ pounds

\frac{100}{(7/4)}=\frac{x}{(7/8)}\\ \\x= 100*(7/8)/(7/4)\\ \\x=50\%

Convert the percentage into fraction

50\%=50/100=1/2

6 0
3 years ago
The population density of a certain region is 60 people per square kilometer if the region covers 23 square kilometers what is t
Jlenok [28]

Answer: Population = 1.380

Step-by-step explanation:

 Step 1 :

Population density is  defined as the measure of average the  population of people per unit of area( per square mile). And is calculated as

Population density =

Number of People / Land Area in Square Km.

Step 2

given  Population density = 60 people per square kilomete

Land Area= 23 square kilometer

Population =Population density x Land Area in Square Km

=  60 people per square kilometer x 23 square kilometer

=1,380.

6 0
3 years ago
6) A cylindrical shaped silo has a diameter of 18 feet and a height of 4 feet. How much water can the silo hold, in terms of π?
Natali5045456 [20]

The amount of water silo can hold in terms of π is 324π cubic feet

<h3><u>Solution:</u></h3>

Given that cylindrical shaped silo has a diameter of 18 feet and a height of 4 feet

To find: Amount of water silo can hold in terms of π

This means we are asked to find the volume of cylindrical shaped silo

<em><u>The volume of cylinder is given as:</u></em>

\text {volume of cylinder }=\pi \mathrm{r}^{2} \mathrm{h}

Where "r" is the radius of cylinder

"h" is the height of cylinder

π is the constant has a value 3.14

Given diameter = 18 feet

radius = \frac{diameter}{2} = \frac{18}{2} = 9

Substituting the values in formula, we get

\text {volume of cylinder }=\pi \times 9^{2} \times 4

\text {volume of cylinder }=\pi \times 81 \times 4=324 \pi

Thus amount of water silo can hold in terms of π is 324π cubic feet

7 0
3 years ago
Read 2 more answers
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