<span>4x^2-x-3=0
let us rewrite the equation in much simplified form:
x^2 - 0.25x - 0.75 = 0
</span><span>x^2 - 0.25x = 0.75
</span>x^2 - 1/4 x + 1/64 =3/4 + 1/64
(x-1/8)^2 = 49/64
x−<span>1/8</span>=±<span>49/64
</span><span><span>x1</span>=−<span>3/4
</span></span><span><span>x2</span>=1</span>
Answer: David conducted (an observational study) because (it studies human behavior) and (the sample is not manuipulated).
Step-by-step explanation:
hope this helps! (:
Answer:
no, yes, yes, yes are the answers
If it is 0.03,0.12,0.12 just add 0.09.
The next two numbers are 0.30,0.39
6 different sketches each in 2 quantity is required.
<u>Explanation:</u>
Given:
Marta has $50
She wants to display 4 sketches in each row
Number of row is 3
Total number of sketches = 3 X 4
= 12
Since, Marta wants to include each type of sketch at least two times in her array, the number of sketches of each type would be 12/2 = 6
Therefore, 6 different sketches each in 2 quantity is required.