Absolute value
means whatever is inside is positive, once we resolve the inside, work out
|-5|=5
now -5=?=-5
answer is -5 since - of + is negaitve
if you don't get it still think like this
|-5|=5
mulitp;ly by -1 everybody
-|-5|=-5
Answer:
b. 82m³
Step-by-step explanation:
9514 1404 393
Answer:
139.39 in
Step-by-step explanation:
The length of a semicircle of diameter D is ...
C = (1/2)πD
For the given diameter of 27 inches, the length of the curved edge of the figure is ...
C = 1/2(3.14)(27 in) = 42.39 in
__
The perimeter of the figure is the sum of the side lengths. Clockwise from left, that sum is ...
P = 27 + 35 + 42.39 + 35 = 139.39 . . . inches
The perimeter of the figure is 139.39 inches.
299+399
399+299
200+99+300+99
99+200+99+300
Part A:
3x^2-15x+20=0
ax^2+bx+c=0; a=3, b=-15, c=20
Radicand: R=b^2-4ac
R=(-15)^2-4(3)(20)
R=225-240
R=-15<0, then the equation has two imaginary solutions (no real)
Part B:
3x^2+5x-8=0
a=3, b=5, c=-8
R=(5)^2-4(3)(-8)
R=25+96
R=121>0, then the equation has two different real solutions:
x=[-b+-sqrt(R)] / (2a)
x=[-5+-sqrt(121)] / [2(3)]
x=(-5+-11) / 6
x1=(-5-11)/6=(-16)/6→x1=-8/3
x2=(-5+11)/6=6/6→x2=1
Solutions: x=-8/3 and x=1
I shose this method because I can get the solutions directly, and I don't have to guess the possible solutions
