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Klio2033 [76]
3 years ago
15

I need help asap please!!!

Mathematics
1 answer:
Mashcka [7]3 years ago
5 0
1. x = 118      2. x = -54      3. x = -54      4. x = -54

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Find the surface area of the sphere.
Mila [183]

A = 201.1\:\text{cm}^2

Step-by-step explanation:

Given: r = 4 cm

The surface area A of a sphere is given by

A = 4\pi r^2 = 4\pi(4\:\text{cm})^2

\:\:\:\:\:= 201.1\:\text{cm}^2

6 0
3 years ago
Solve Sine inverse x +sine inverse 2x = π/3 <br> Please solve it faster..
LuckyWell [14K]
Arcsin x + arcsin 2x = π/3

arcsin 2x =  π/3 - arcsin x

sin[arcsin 2x] = sin[π/3 - arcsin x] (remember the left side is like sin(a-b)

2x = sinπ/3 cos(arcsin x)-cosπ/3 sin(arc sinx)

2x = √3/2 . cos(arcsin x) - (1/2)x)

but cos(arcsin x) = √(1-x²)===>2x = √3/2 .√(1-x²)  - (1/2)x)

Reduce to same denominator:

(4x) = √3 .√(1-x²)  - (x)===>5x = √3 .√(1-x²)

Square both sides==> 25x²=3(1-x²)

28 x² = 3 & x² = 3/28 &  x =√(3/28)



3 0
2 years ago
Need some help please
Gnoma [55]
You can use this to help you. label the triangle like the picture and use the equations. I hope this helps.

3 0
3 years ago
Read 2 more answers
Can you answer this question?​
Debora [2.8K]

Answer: y= 3 times 2 to the power x. Second answer

Step-by-step explanation:

if you plug in 0 for x, y= 3x 1= 3

if you plug in 1 for x y= 3 x 2 = 6

Look at the x values and y values

(0,3) and (1, 6) on the graph. It matches answer number 2. Remember, 2 raised to the power 0 = 1 and 3 times 1 = 3. And 2 raised to the power 1 =2 and 3 times 2 = 6.

3 0
1 year ago
5 times 3 and 5 over 8 times 9 and 1 over 4
Ber [7]
The answer should be:
20.875

Hope this helps. 

3 0
2 years ago
Read 2 more answers
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