Write and solve an equation.

Mathematics

1 answer:

Bogdan [553]2 years ago

4 0

15+a= 32
-15 -15

a=17

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Hello! Please help if you’re able to :D!!

dezoksy [38]

Answer: Simplify $\frac{x}{y}$ = 5/6 = $\sqrt[n]{x}$ = 0.83

Step-by-step explanation: I hope I'm correct :)

8 0

2 years ago

Hi people! Can you help me figure this out? I'll mark brainliest!

Arada [10]

D. 12.5

The equation to find the average rate of change is

$\frac{y2 - y1 }{x2 - x1}$

To find the average rate of change between points (0,20) and (8,120) you need to plug it into the equation so it'll be

$\frac{120 - 20}{8 - 0}$

this simplifies to

$\frac{100}{8}$

which is 12.5

4 0

1 year ago

If x+1/x= 3, then prove that m^5+1/m^5= 123

alina1380 [7]

9514 1404 393

Explanation:

We can start with the relations ...

$\displaystyle\left(x+\frac{1}{x}\right)^3=\left(x^3+\frac{1}{x^3}\right)+3\left(x+\frac{1}{x}\right)\\\\\left(x+\frac{1}{x}\right)^5=\left(x^5+\frac{1}{x^5}\right)+5\left(x^3+\frac{1}{x^3}\right)+10\left(x+\frac{1}{x}\right)\\\\\textsf{From these, we can derive ...}\\\\x^5+\frac{1}{x^5}=\left(x+\frac{1}{x}\right)^5-5\left(\left(x+\frac{1}{x}\right)^3-3\left(x+\frac{1}{x}\right)\right)-10\left(x+\frac{1}{x}\right)$

$\displaystyle x^5+\frac{1}{x^5}=\left(x+\frac{1}{x}\right)^5-5\left(x+\frac{1}{x}\right)^3+5\left(x+\frac{1}{x}\right)\right)\\\\x^5+\frac{1}{x^5}=3^5 -5(3^3)+5(3)\\\\=((3^2-5)3^2+5)\cdot3=(4\cdot9+5)\cdot3=(41)(3)\\\\=\boxed{123}$