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Ivenika [448]
3 years ago
6

Anise wants to have longer hair than her sister. Her sister's hair is 2.25 feet long. How long does Anise's hair have to

Mathematics
2 answers:
rodikova [14]3 years ago
3 0
The answer has to 2.26 because 2.26 is bigger than 2.25
Sedbober [7]3 years ago
3 0

Answer:

b.

Step-by-step explanation:

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Choose the correct simplification of the expression (−2x + 4y)(3x − 7y).
Nadya [2.5K]
(-2x + 4y)(3x - 7y) = -6x^2 - 28y^2 + 12yx
3 0
3 years ago
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A hollow sphere sits snugly in a foam cube so that the sphere touches each side of the cube. Find the volume of the foam.
ExtremeBDS [4]

Answer:

                             π

V-foam = 4r³( 2 - ----- )

                             3

Step-by-step explanation:

Let the radius of the sphere be r.  Then the volume of the sphere is

V = (4/3)(π)(r³).  

Next, recognize that the side length of the cube is 2r, and that the volume of the cube is thus

V = (2r)³, or 8r³.

Then the volume of the foam is equal to the volume of the cube less the volume of the sphere:

V-foam = 8r³ - (4/3)(π)(r³).  This could be factored into

                             π

V-foam = 4r³( 2 - ----- )

                             3

5 0
3 years ago
Please can I get some type of help on questions 27 and 29 PLEASE ANYONE
nasty-shy [4]

Answer:

Number 27:Population density refers to the number of people who live in a defined land area (usually square miles or square kilometers). So, if two million people live in ten square miles, the population density is two hundred thousand people per square mile.

Number 29:Your heart beats about 100,000 times in one day. And about 35 million times in a year.And 128 beats in one minute

Step-by-step explanation:

8 0
3 years ago
A researcher measures daily driving distance from college and weekly cost of gas for a group of commuting college students. What
juin [17]

Answer:

There is a positive correlation between these two variables.

Step-by-step explanation:

Positive correlation is an association amid two variables in which both variables change in the same direction.  

A positive correlation occurs when one variable declines as the other variable declines, or one variable escalates while the other escalates.

As the distance covered by the vehicle increases the amount of gas consumed also increases. Thus, the weekly cost of gas will also increase.

Thus, there is a positive correlation between these two variables.

6 0
3 years ago
3.2] I can rearrange formulas to solve for a specified variable.<br><br> Solve for r.<br> h=r-m
Lesechka [4]

Answer:

r = h + m

Step-by-step explanation:

h = r - m

Switch sides.

r - m = h

Add m to both sides.

r - m + m = h + m

Simplify the left side. -m + m = 0

r = h + m

6 0
2 years ago
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