1) 8v+w+7-8v+2w
=w+7+2w
=3w+7
-----------------------------
2) 4c^2+6c-3c^2-2c-3
=c^2+6c-2c-3
=c^2+4c-3
-------------------------------
3) z^3+5z+3z^2+1-4-2z^2
=z^3+z^2+5z+1-4
=z^3+z^2+5z-3
The number of roots of a quadratic function can be determined from its discriminant.
If Disc> 0, the function has two distinct roots
If Disc = 0, the function has a repeated root
If Disc < 0, the function has no real root.
The discriminant can be calculated as:
Disc = b² - 4ac
For the given equation:
Disc = 9 - 4(2)(1) =1
Since the value of discriminant is positive, the function will have two distinct roots.
So, the answer to this question is option B
Number 333333333333333333333333
The bead is in a cylindrical shape and the formula for solving the volume of a cylinder is V=pi*r²*h where "r" is the radius, "h" for the height.
We have given values such as:
r=diameter/2 = 2/2 = 1mm
h= 8mm
Solving for the volume, we have:
V=3.14*1²*8
V=24.12 mm²
Answer:
D) 1 quarter and 1 dime
Step-by-step explanation:
1 quarter = 25% of a dollar
+
1 dime = 10% of a dollar
10% + 25%=35% not 30
