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ale4655 [162]
3 years ago
12

Question 4 of 10

Mathematics
1 answer:
Rus_ich [418]3 years ago
7 0

Answer:

LA = 2πrh

Step-by-step explanation:

The lateral surface area is the area of all the sides of a 3-dimensional object excluding its base and top.

The lateral area of a cylinder is the area of its surfaces excluding the area of its base and top

LA = 2πrh

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If m YXW=18°, YW=6, and WZ=6, what is ZXY?
MA_775_DIABLO [31]

Answer:

18°

Step-by-step explanation:

It would also be 18 degrees

4 0
3 years ago
What are the solutions of the equation (x – 3)2 + 2(x – 3) -8 = 0? Use u substitution to solve.
Andrej [43]

Answer:

x = -1 and x = 5

Step-by-step explanation:

<em>What are the solutions of the equation (x – 3)² + 2(x – 3) -8 = 0? Use u substitution to solve.</em>

<em />

(x – 3)² + 2(x – 3) -8 = 0   -------------------------------------------------------(1)

To solve this problem, we will follow the steps below;

let u = x-3

we will replace x-3 by u in the given equation:

(x – 3)² + 2(x – 3) -8 = 0  

u² + 2u -8 = 0  ----------------------------------------------------------- --------------(2)

We will now solve the above quadratic equation

find two numbers such that its product gives -8 and its sum gives 2

The two numbers are 4 and -2

That is; 4×-2 = -8    and 4+(-2) = 2

we will replace 2u by (4u -2u)  in equation (2)

u² + 2u -8 = 0

u² + 4u - 2u -8 = 0

u(u+4) -2(u+4) = 0

(u+4)(u-2) = 0

Either  u + 4 = 0

            u = -4

or

u-2 = 0

u = 2

Either u = -4    or u = 2

But  u = x-3

x = u +3

when u = -4

x = u + 3

x = -4 + 3

x=-1

when u = 2

x = u + 3

x = 2 + 3

x=5

Therefore, x = -1  and  x =5

x

6 0
3 years ago
You hear that a storm is moving at 15 km/h north. You have been given the storm's _____.
Dovator [93]
According to the information given above, the answer is: You hear that a storm is moving at 15 km/h north. You have been given the storm's <span>velocity</span>. 
6 0
3 years ago
HELP PLS ANSWER <br> Which set of ordered pairs represents a function?
nataly862011 [7]

Answer:

the answer is d

Step-by-step explanation:

the x values don't repeat so therefore It is a function.

3 0
3 years ago
Read 2 more answers
There are 450 seats in the lower level of a concert hall with b balcony seats in the upper level. So far, 170 tickets have been
slamgirl [31]

There are 400 balcony seats in the concert hall.

<u>Step-by-step explanation</u>:

Step 1 :

  • The number of lower seats = 450 seats

Total seats = Lower seats + balcony seats

Step 2 :

  • Tickets sold = 170 tickets
  • Total tickets = x

Tickets sold = 1/5 of total tickets.

⇒ 170 = (1/5)x

⇒ x = 5\times170

⇒ x = 850 tickets

∴ Total seats in the concert hall is 850.

Step 3 :

Total seats = 450 + balcony seats

850 - 450 = balcony seats

∴ balcony seats = 400

7 0
3 years ago
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