1: x + 8.23 = -5.14
Subtract 8.23 from both sides
x = -13.37
2: 4/9x = 32
Multiply both sides by 9 (basically, 4 is being divided by 9, so the opposite is to multiply).
(9 times 4, then divided by 9 is 4)
4x = 288
Divide both sides by 4 to isolate x
x = 72
4 wont be the answer. answer is 3.42
The answer to the above equation is 1.1659 *10⁻¹³
Step-by-step explanation:
We can easily do this equation by knowing some basic indices corollary. These include
- aᵇ=1/a⁻ᵇ similarly a⁻ᵇ = 1/aᵇ
- aᵇ.aⁿ = aᵇ⁺ⁿ
- aᵇ/aⁿ=aᵇ⁻ⁿ
Using these three corollaries we can easily solve the equation-
2.6 x 10⁻⁶/ 2.23 x 10⁷
Using the corollary 1, the equation can be rewritten as-
⇒2.6/2.23 ₓ10⁷ₓ 10⁶
Using corollary 2-
⇒2.6/2.23 ₓ 10⁷⁺⁶
⇒2.6/2.23 ₓ 10¹³
Using corollary 1 in reverse manner (1/aᵇ= a⁻ᵇ)
⇒1.1659ₓ 10⁻¹³
Hence the answer of the equation is 1.1659 ₓ 10⁻¹³
I believe that the answer is D because when you go through
and an irrational number is a number that does not end and can not be put in a fraction
Area of circle = π · r²
9 π = π · r²
9 = r²
3 = r
Volume of sphere = (4/3)π · r³
= (4/3)π · (3)³
= 4π · 3²
= 4π · 9
= 36π
Answer: the volume of the sphere is 36π