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NeX [460]
2 years ago
6

A pillar is 15 m high the diameter is 84 cm what is the surface area ​

Mathematics
1 answer:
NARA [144]2 years ago
3 0

Answer:

1416 cm

Step-by-step explanation:

Use calcutor shows everthinh

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How do i write how i got the answer for 5x=45 using the opposite operation
Colt1911 [192]

Answer:

45/5= 9

Step-by-step explanation:

4 0
3 years ago
The area of a rectangular wall of a barn is 85 square feet. Its length is 12 feet longer than the width. Find the length and wid
MaRussiya [10]

Answer:

Length = 17 feet, Width = 5 feet

Step-by-step explanation:

Given:

The area of a rectangular wall of a barn is 85 square feet.

Its length is 12 feet longer than the width.

Question asked:

Find the length and width of the wall of the barn.

Solution:

Let width of a rectangular wall of a barn = x

<u>As length is 12 feet longer than the width.</u>

Length of a rectangular wall of a barn = 12+x

As we know:

Area\ of\ rectangle=length\times breadth

85=(12+x)x\\\\85=12x+x^{2} \\

Subtracting both sides by 85

x^{2} +12x-85=0\\x^{2} +17x-5x-85=0\\Taking\ common\\x+(x+17)-5x(x+17)=0\\(x+17)(x-5)=0\\x+17=0, x-5=0\\x=-17,x=5

As width can never be in negative, hence  width of a rectangular wall of a barn = x = 5 feet

Length of a rectangular wall of a barn = 12+x=12+5=17\ feet

Therefore, length and width of the wall of the barn is 17 feet and 5 feet respectively.

                 

4 0
3 years ago
(15, 31) is rotated 90 ° counterclockwise which coordinates gives me
dezoksy [38]

Answer:

(-31,15)

Step-by-step explanation:

Rotating 90 degrees clockwise is very simple:

(a,b) 90 degrees= (-b,a)

Very simple.

Just switch sides and add negative to the first term.

4 0
3 years ago
Given h(x) = 4x2 - 5x + 4 find h(-5).
MrRissso [65]

9514 1404 393

Answer:

  h(-5) = 129

Step-by-step explanation:

Put -5 where x is and do the arithmetic.

  h(-5) = 4(-5)² -5(-5) +4

  h(-5) = 4(25) +25 +4 = 129

7 0
3 years ago
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What is the y-intercept of y=4x-7 &amp; 7x+2y=18
bixtya [17]

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

5 0
2 years ago
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