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kondor19780726 [428]
3 years ago
11

What operation should be used to solve the equation 5n = 45?

Mathematics
2 answers:
bulgar [2K]3 years ago
7 0

Answer:

n = 9

Step-by-step explanation:

divide 45 by 5 to find n

45/5 = 9

pashok25 [27]3 years ago
5 0

Answer:

division

Step-by-step explanation:

you can rule out addition and subtraction because there are no addition or subtraction signs. you cannot do multiplication because 5n is already multiplication, and you need to do the inverse operation.

therefore the inverse operation is division

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iren2701 [21]
All real numbers, domain of definition is from -infinity till + infinity
5 0
3 years ago
A student needs to make a circular cardboard piece with an area between 154 square inches and 616 square inches. The function f(
Nezavi [6.7K]
The area of the circle by definition is given by:
 f (r) =  \pi  * r ^ 2

 For f (r) = 154:
 154 =  \pi  * r ^ 2

 Clearing r we have:
 r ^ 2 = 154 / 3.14

 r =  \sqrt{154/3.14} 

 r = 7
 For f (r) = 616:
 616 = \pi * r ^ 2
 Clearing r we have:
 r ^ 2 = 616 / 3.14 r = \sqrt{616/3.14} r = 14
 Answer:
 
a reasonable domain for f (r) is:
 
7 <r <14
3 0
3 years ago
Joe is building a container to hold sand for a beach party. The container will hold 9,000 cubic feet of sand. Of the base of the
Genrish500 [490]

Answer:

The height of the container is 4 feet.

Step-by-step explanation:

A container has the format of a rectangular prism.

It has three dimensions: width(w), length(l), height(h).

The volume is:

V = w*l*h

In this question:

w = 45, l = 50, V = 9000

We have to find the height(length and width are in feet, volume in cubic feet, so the height will be in feet).

V = w*l*h

9000 = 45*50*h

h = \frac{9000}{45*50}

h = 4

The height of the container is 4 feet.

7 0
3 years ago
Someone help plzzz!!! This is due today before 11pm
monitta

Answer:

1470.24 in^3

Step-by-step explanation:

Square: 12*6*11=792

Circle: 6*(3.14*6^2)=678.24

792+678.24=1470.24

6 0
3 years ago
You get a brainliest and 100pt
pickupchik [31]

Answer:

C

Explanation:

》F=ma

》F=0 for balanced force ,so,

》a=0 which means moving at a constant speed

D is also right but C is more precise.We have to select the most suitable answer.

8 0
4 years ago
Read 2 more answers
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