Answer:
x=2.8≈3
Step-by-step explanation:
x:2=7:5
by cross-multiplication
x×5=2×7
5x=14
x=14/5
x=2.8≈3
i hope this will help you :)
Answer: y cuál es la pregunta?????
Step-by-step explanation:
For me personally i can work nearly any equation with a calculator. definitely a good choice <span />
I believe since it's a supplementary line, your answer will be 180-57
This would make your angle 123°. My apologies if I am wrong. I have not taken Geometry in a Year or two.
Desmos graphing calculator will draw this graph for you.
draw 2 curves
y = x^4 + x^3
and
y = 4x^2 + 4x
The roots are the points where the 2 curves intersect.
You can see by simple substitution that one root is zero.
x^4 + x^3 - 4x^2 - 4x = 0
f(2) = 16 + 8 - 4(4) - 4(2) = 0 so 2 is another root
f(-2) = 16 - 8 - 16 + 8 = 0 so -2 is another root
f(-1) = 1 - 1 - 4 + 4 = 0 so -1 is the other root
The answer is A
