What is true about the equation t=c+40

Mathematics

1 answer:

user100 [1]3 years ago

6 0

C=t-40 T-c=40 C-t=-40

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A^2 + 2AB +B^2<br><br><br><br> habsbsjabdhjsbfhjbsdjh

Vesna [10]

(A+b)(a+b)
I dont understand the writing. I’m doing this math using factoring

5 0

2 years ago

X^2+1=0<br> What are the roots of this equation?<br> Thanks!

Hitman42 [59]

X² + 1 = 0

=> (x+1)² - 2x = 0

=> x+1 = √(2x)

or x - √(2x) + 1 = 0

Now take y=√x

So, the equation changes to

y² - y√2 + 1 = 0

By quadratic formula, we get:-

y = [√2 ± √(2–4)]/2

or √x = (√2 ± i√2)/2 or (1 ± i)/√2 [by cancelling the √2 in numerator and denominator and ‘i' is a imaginary number with value √(-1)]

or x = [(1 ± i)²]/2

So roots are [(1+i)²]/2 and [(1 - i)²]/2

Thus we got two roots but in complex plane. If you put this values in the formula for formation of quadratic equation, that is x²+(a+b)x - ab where a and b are roots of the equation, you will get the equation

x² + 1 = 0 back again
So it’s x=1 or x=-1

5 0

3 years ago

Read 2 more answers

A square lawn has area 98 ft². A sprinkler placed at the center of the lawn sprays water in a circular pattern as

torisob [31]

The radius of the circle exists approximately 4.95 feet.

<h3>How to estimate the radius of the circle?</h3>

Given the area of the square as A = 98 ft²

The side length of the square choice is equivalent to the diameter of the circle.

First, we must obtain the length of the square.

Area of a square $= L^2$