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Kamila [148]
3 years ago
10

What is the value of x? x= ??

Mathematics
1 answer:
saw5 [17]3 years ago
5 0

Answer:

X=50

Step-by-step explanation:

Because the top and bottom angles are formed by 2 intersecting lines, we know that the angles are equivalent to each other via the vertical angle theorem. This allows us to set the following equation:

[2(x+10)]=(3x-30)

You would then distribute the 2 on the left side to get

2x+20=3x-30

Then, simply combine like terms.

20+30=3x-2x

Simplify.

50=x

The answer is therefore 50.

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10. I purchased a hair-dryer for 5,400 including 8% VAT. Find the price before VAT was added. <br>​
Semmy [17]

Answer:

4968

Step-by-step explanation:

432 is 8% of 5400 and after deducting 432 we get 4968.

8 0
2 years ago
What is the height of the cone if its volune is 8,138.88 feet CUBED? Use 3.14 for pi. (Radius of base of cone is 12 ft)
Morgarella [4.7K]

Answer:

h = 54 feet

Step-by-step explanation:

The equation for the volume of a cone is V = \frac{1}{3} × π × r² × h.

You have the volume, which is 8,138.88, and the radius of the base, which is 12.

V = 8,138.88

h = 12

π = 3.14

When you plug everything you know into the equation, you get:

V = \frac{1}{3} × 3.14 × r² × h.

8,138.88 = \frac{1}{3} × 3.14 × (12)² × h

After you multiply everything on the right side, you come out with:

8,138.88 = 150.72 × h

To find h, you can divide each side by 150.72.

8,138.88 ÷ 150.72 = 54 feet!

3 0
2 years ago
Given that f(a+b)= f(a) + f(b) and f(x) is always positive, what os the value of f(0)?
FrozenT [24]
This is a strange question, and f(x) may not even exist. Why do I say that? Well..

[1] We know that f(a+b) = f(a) + f(b). Therefore, f(0+0) = f(0) + f(0). In other words, f(0) = f(0) + f(0). Subtracting, we see, f(0) - f(0) = f(0) or 0 = f(0).

[2] So, what's the problem? We found the answer, f(0) = 0, right? Maybe, but the second rule says that f(x) is always positive. However, f(0) = 0 is not positive!

Since there is a contradiction, we must either conclude that the single value f(0) does not exist, or that the entire function f(x) does not exist.

To fix this, we could instead say that "f(x) is always nonnegative" and then we would be safe.
4 0
3 years ago
Please answer correctly !!!!! Will mark brainliest !!!!!!!!!!!
vesna_86 [32]

Answer:

your answers are already  matched up

Step-by-step explanation:

8 0
3 years ago
Solve 1) y"+y'+y=x²;​
Naily [24]

Answer:

x2+3y

Step-by-step explanation Combine like terms y+y+y=x2   3y+x2  and the solution is x2+3y.

5 0
3 years ago
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