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3 years ago

Please i need help asap

Mathematics

2 answers:

konstantin123 [22]3 years ago

7 0

Use photo-math hope this helps

Vera_Pavlovna [14]3 years ago

6 0

I see that it’s from algebra with pizzazz so go online and search up algebra with pizzazz answers key and look for the one you have and it should have all the answers :) I hope I helped you get the answers!

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A closed can, in a shape of a circular, is to contain 500cm^3 of liquid when full. The cylinder, radius r cm and height h cm, is

Gemiola [76]

To express the height as a function of the volume and the radius, we are going to use the volume formula for a cylinder: $V= \pi r^2h$
where
$V$ is the volume
$r$ is the radius
$h$ is the height

We know for our problem that the cylindrical can is to contain 500cm^3 when full, so the volume of our cylinder is 500cm^3. In other words: $V=500cm^3$ . We also know that the radius is r cm and height is h cm, so $r=rcm$ and $h=hcm$ . Lets replace the values in our formula:
$V= \pi r^2h$
$500cm^3= \pi (rcm^2)(hcm)$
$500cm^3=h \pi r^2cm^3$
$h= \frac{500cm^3}{ \pi r^2cm^3}$
$h= \frac{500}{ \pi r^2}$

Next, we are going to use the formula for the area of a cylinder: $A=2 \pi rh+2 \pi r^2$
where
$A$ is the area
$r$ is the radius
$h$ is the height

We know from our previous calculation that $h= \frac{500}{ \pi r^2}$ , so lets replace that value in our area formula:
$A=2 \pi rh+2 \pi r^2$
$A=2 \pi r(\frac{500}{ \pi r^2})+2 \pi r^2$
$A= \frac{1000}{r} +2 \pi r^2$
By the commutative property of addition, we can conclude that:
$A=2 \pi r^2+\frac{1000}{r}$

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3 years ago

a fabric store sells pieces of material for $5 each Ali bought two white pieces and 8 blue pieces she also bought a pack of butt

Murrr4er [49]

The term (2 + 8) is described as the total amount of pieces of fabric. It makes it easier to put this term this way so you wouldn't have to do (8 x 5) + (2 x 5) and do the distributive property.

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Is 290 10 times as much as 2,900

ale4655 [162]

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3 years ago

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Which of the following numbers is not a perfect square? 24 25 64 100

stich3 [128]

Hi!

A perfect square is the product of when a whole number is multiplied by itself

Ex:

6 × 6 = 36, 36 is the perfect square.

The number that is being multiplied is the square root.

So to find the correct answer for this question, let's use the process of elimination.

100 = 10 × 10 so we can cross out 100

64 = 8 × 8 so we can cross out 64

25 = 5 × 5 so we can cross out 25

Now all we have left is 24, which is not a perfect square.

Answer: A. 24

Hope this helps :)

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3 years ago

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Select all the rates that correspond to a unit rate of $6 per sandwich. You must select all correct responses to receive credit.

faltersainse [42]

Answer:

B, C, and E

Step-by-step explanation:

A. 42/6 = 7 Not correct

B. 42/7 = 6 Correct

C. 108/18 = 6 Correct

D. 40/5 = 8 Not correct

E. 96/16 = 6 Correct

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3 years ago