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Leya [2.2K]
3 years ago
5

6.

Mathematics
2 answers:
natima [27]3 years ago
7 0

Answer:

273

Step-by-step explanation:

CDs to DVDs is 3:5

\frac{728}{3+5}

\frac{728}{8}=91

3 \times 91: 5 \times 91

273:455

273 CDs were sold.

sleet_krkn [62]3 years ago
5 0

Answer:

273

Step-by-step explanation:

CD(3):DVD(5)

3+5=8

728 divided by 8= 91

3x91=273

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Two less than three times the width of a rectangle is equal to the lenght.The area of the rectangle is 65 square ft.What is the
3241004551 [841]

Answer:

 length:  13 feet

Step-by-step explanation:

width:  x

length:  3x - 2

Area = Length * Width

65 = x(3x - 2)

65 = 3x² - 2x

3x² - 2x - 65 = 0

(3x +  13)( x -  5) = 0

3x + 13 = 0       and     x - 5 = 0

3x = -13                             x = 5

x = - 13/3

**Width cannot be a negative number so we'll discard -13/3.

width:  x = 5

length:  3x - 2 = 3(5) - 2 = 13

7 0
3 years ago
"Which of the following sampling techniques involves choosing individuals from the population at random where the proportions of
zhannawk [14.2K]

Answer:

Option a

Stratified random sample

Explanation:

(a) In stratified random sampling, a division of the population occurs in such a way that a population is stratified in different small groups or strata with common traits and same proportion both in population and sample. this type of sample so formed is known as stratified random sample.

(b) Simple random Sample:

This sample is formed by the random and unbiased selection of individual that represents the population.

(c) Population:

The entire set of individuals with certain specific characteristics represents a population whereas a sample is drawn out of the population and can be referred to as the subset of the population.

(d) Cluster Sample:

In this, separate sample groups are formed known as clusters, here sampling of random clusters take place.

3 0
3 years ago
Which is more 8 cups or 1 quart
Soloha48 [4]
8 cups because 4 cups are in 1 quart :)
8 0
4 years ago
Read 2 more answers
Use linear combination to solve this problem. show your work.<br><br> 3x + 2y = -4<br> 4x - y = 13
pshichka [43]

Answer:

The solution of the system of equations is the point (2,-5)

Step-by-step explanation:

we have

3x+2y=-4 -----> equation A

4x-y=13 -----> equation B

Multiply the equation B by 2 both sides

2*(4x-y)=2*13

8x-2y=26 ------> equation C

Adds equation A and equation C

3x+2y=-4\\8x-2y=26\\----------\\3x+8x=-4+26\\11x=22\\x=2

Find the value of y

Substitute the value of x in equation A

3(2)+2y=-4

2y=-4-6

y=-10/2=-5

The solution of the system of equations is the point (2,-5)

8 0
3 years ago
Help more than 10 points
Drupady [299]
Ratio triangle height to square side 7:8
ratio triangle base to square side 1:2
Area of the square is 64 in² then the sides = 8 in

ratios give
h = 7(8)/8
h = 7

b = 8/2
b = 4

Area Triangle = 0.5(7)(4)
= 14

Then shaded region is the Area of the square minus the Area of the triangle.
A = 64 - 14
A = 50 in²


3 0
4 years ago
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