Answer:
A. Linear
Step-by-step explanation:
The equation (
) is a linear equation. As per its definition, a linear equation is an equation where all terms are to the first degree, meaning that none of the terms have an exponent. The equation, () falls under this category, as none of its terms has an exponent, therefore, the equation is a linear equation.
Answer:
9 + 11x
Step-by-step explanation:
Answer:
45 min
Step-by-step explanation:
Here,
the we take the work as W and Alan's speed as A and Zack's speed as Z.
A = 2Z
W = 30 ( A+Z)
if the time for Alan to done cleaning alone is t then t = W ÷ A
t = ( 30 (A+(A÷2)))÷ A
t = 45 min
I am done .
Answer:
x=38
Step-by-step explanation:
hope this helps!
if angles are on a line like that, both equations added up together will always be equal to 180.
like this:
2x-10+3x = 180
5x-10=180 (combine)
5x=190 (subtract 10 on both sides)
x=38 (divide both sides by 5)
Especially if we're to present the answers to 2 decimal places, we'd gues that the roots of this polynomial are not "nice."
My suggestion is that we use the quadratic formula to find the roots, and then write the associated factors.
In 3x^2 +x-5=0, a=3, b=1 and c= -5. Thus, the roots are
-1 plus or minus √(1^2 - 4(3)(-5) )
x = --------------------------------------------------
2(3)
or:
-1 plus or minus √61 -1 plus or minus 7.81
x = ----------------------------------- = ---------------------------------
6 6
Then one root is 6.81/6, or approx. 1.14, and the other is
-8.81/6, or approx. -1.47.
The solution set is then {-1.47, 1.14}.
