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artcher [175]
3 years ago
11

4/n+9=2/7 adsdwddddfdsfefsef

Mathematics
2 answers:
Jet001 [13]3 years ago
6 0

Answer:

<h2>n = 5</h2><h2 />

Step-by-step explanation:

<u>  4    </u>  = <u> 2 </u>

n + 9      7

cross multiply:

7 (4) = 2n + 2 (9)

simplify:

28 = 2n + 18

28 - 18 = 2n

simplify:

n =<u> 10 </u>

      2

n = 5

beks73 [17]3 years ago
4 0

Answer: n= −28 /61

Step-by-step explanation:

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Aleks04 [339]

Answer:

1.08

Step-by-step explanation:

5 0
3 years ago
What percent is equivalent to 18/30
FrozenT [24]

18 / 30 =

60 percent


4 0
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Evaluate 15r -1 when r=5
alukav5142 [94]

Answer:

74

Step-by-step explanation:

You just have to substitute r with 5.

Now, the equation looks like this:

15(5)-1

Next, solve 15*5 first according to PEMDAS

And 15*5 equals 75

\frac{\left[\begin{array}{ccc}1&5\\5\\\end{array}\right] }{75}

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3 0
3 years ago
Find the volume of a right circular cone that has a height of 3.9 ft and a base with a circumference of 16.3 ft. Round your answ
MissTica

Answer:

The answer to your question is Volume = 27.5 ft³

Step-by-step explanation:

Data

Volume = ?

height = 3.9 ft

Circumference = 16.3 ft

Process

1.- Calculate the radius of the Cone

   Circumference = 2πr = 16.3 ft

-Solve for r

                                    r = 16.3/2π

                                    r = 16.3/6.28

                                    r = 2.5955 ft

2.- Calculate the volume

Volume = 1/3πr²h

-Substitution

Volume = 1/3(3.14)(2.5955)²(3.9)

-Simplification

Volume = 1/3(82.4966)

-Result

Volume = 27.5 ft³

8 0
3 years ago
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Sergio039 [100]
Just pick random it’s helpful
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3 years ago
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