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Anna11 [10]
3 years ago
14

9n - 7 = 5n + 5 What is N?

Mathematics
2 answers:
Alenkinab [10]3 years ago
6 0

Answer:

n=3

Step-by-step explanation:

combine like terms

put 5n to the other side by subtracting it

4n-7=5

no add 7 to other side

4n=12

divide 4 by the 12

n=3

adelina 88 [10]3 years ago
5 0
N = 3 so the answer is 3
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Please help: Find the volume of the solid. Use 3.14 for π.
Kazeer [188]

Answer:

The volume of the solid is 420m³

Step-by-step explanation:

The area of any pyramid is "1/3 · B · h", where B is the area of the base, and h is the height.

Knowing this we just need to solve for a couple of things.

First, and the easiest is the height of the triangle which (thankfully) is given to us. The height is 15m, which plus one number into our equation.

1/3 · B · 15

Second, we need to find the area of the base of the pyramid. That's done easily by finding the area of a triangle ( \frac{base * height}{2} → \frac{24*7}{2} → \frac{168}{2} → 84) giving us 84 units. This puts another number into our equation.

1/3 · 84 · 15

Now that we have all of the parts to our equation, we can solve it.

1/3 · 84 · 15

1/3 · 1260

420

The volume of the solid is 420m³

6 0
3 years ago
Mars is about 7 10km away from the sun. Saturn is about 7 11km away from the sun. about how many times the distance from the sun
umka21 [38]
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8 0
3 years ago
Help me please ...........
Llana [10]

Answer:

D.

\sqrt{384}

Step-by-step explanation:

\sqrt{384}

\sqrt{192 \times 2}

\sqrt{96 \times 2 \times 2}

2 \sqrt{48 \times 2}

2 \sqrt{24 \times 2 \times 2}

2 \times 2 \sqrt{12 \times 2}

4  \sqrt{6 \times 2 \times 2}

4 \times 2 \sqrt{6}

8 \sqrt{6}

Therefore Option D is correct..!

6 0
3 years ago
Find the slope of the line that passes through the pair of points.(1,7) (10,1)
VladimirAG [237]
So I believe you go
( y_{1} - y_{2} )                  (x_{1}- x_{2)}

and substitute x an y like this 
  
(1-7)         (7-1)
and get a slope of -9/6 

Sorry If I got it wrong,but I hope I helped
7 0
3 years ago
Read 2 more answers
Help if your good at maths
tekilochka [14]

Let's make another angle y

Where y= 51° (corresponding angles )

and x+y= 180°. ( linear pair )

x+51°= 180° (y=51°)

x=180°-51°

x= 129°

<u>So the value of x is 129</u>°

Hope you got your answer !

4 0
3 years ago
Read 2 more answers
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