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4 years ago

an item was selling for $72 is reduced to $60 find the precent decrease in price round your answer to the nearest tenth

1 answer:

8 0

Remember this, 5 or higher goes up, 4 or lower the number stays the same. soooo.... lets see how i can start this off...
well,... you could....60 divided by 72 equals.... 0.8333333333333
then, starting from the decimal.. you go two spaces to the right... so thats 83.3333333333
so, since 3 is lower than 4, it would be the same.. and take off the extra three after the decimal. and we're basically... rounding off right??
so your answer should be 80%
Hope i helped!!! :D

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3 years ago

Select the scenarios that correctly represent the given graph

sammy [17]

Answer:

Option 1 and option 5.

Step-by-step explanation:

The given graph is a downward parabola. It means the value of function increases and after reaching its maximum point the value of function decreases.

Scenario 1 : The height of a stone shot by a catapult reaches a maximum height and then falls on the ground.

The graph of this scenario is a downward parabola. Therefore option 1 is correct.

Scenario 2 : The speed of a car increases constantly by 10 miles per hour.

The graph of this scenario is a straight line with slope 10. Therefore option 2 is incorrect.

Scenario 3 : The radioactivity of a substance decreases by 10% every year.

The graph of this scenario is an decreasing curve which represents an exponential function. Therefore option 3 is incorrect.

Scenario 4 : The amount of money in an account decreases for a few months and then increases.

The graph of this scenario is a upward parabola. Therefore option 4 is incorrect.

Scenario 5 : The sale of product increases at first and then decreases.

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Therefore, the correct options are 1 and 5.

7 0

3 years ago

1. Write the equation of a line through the points (-4,7) and (-6,2). 2. Write the equation of a line through the points (2,-9)

umka2103 [35]

Answer:

Step-by-step explanation:

1. Write the equation of a line through the points (-4,7) and (-6,2). 2. Write the equation of a line through the points (2,-9) and (2,6) 3. Write the equation of the line perpendicular to the line in #1 with the same x-intercept

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3 years ago

A truck is being filled with cube-shaped packages that have side lengths of 1/4 foot. The part of the truck that is being filled

n200080 [17]

Answer:

24000 pieces.

Step-by-step explanation:

Given:

Side lengths of cube = $\frac{1}{4} \ foot$

The part of the truck that is being filled is in the shape of a rectangular prism with dimensions of 8 ft x 6 1/4 ft x 7 1/2 ft.

Question asked:

What is the greatest number of packages that can fit in the truck?

Solution:

First of all we will find volume of cube, then volume of rectangular prism and then simply divide the volume of prism by volume of cube to find the greatest number of packages that can fit in the truck.

$Volume\ of\ cube =a^{3}$

$=\frac{1}{4} \times\frac{1}{4}\times \frac{1}{4} =\frac{1}{64} \ cubic \ foot$

Length = 8 foot, Breadth = $6\frac{1}{4} =\frac{25}{4} \ foot$ , Height = $7\frac{1}{2} =\frac{15}{2} \ foot$

$Volume\ of\ rectangular\ prism =length\times breadth\times height$

$=8\times\frac{25}{4} \times\frac{15}{2} \\=\frac{3000}{8} =375\ cubic\ foot$

The greatest number of packages that can fit in the truck = Volume of prism divided by volume of cube

The greatest number of packages that can fit in the truck = $\frac{375}{\frac{1}{64} } =375\times64=24000\ pieces\ of\ cube$

Thus, the greatest number of packages that can fit in the truck is 24000 pieces.

7 0

3 years ago