Answer:

Step-by-step explanation:
Per cent means ' out of a hundred' , thus
45% =
← divide ( cancel) both 45 and 100 by 5
45% =
← in simplest form
Answer:
X=10
X=-8
Step-by-step explanation:
(x+1)*(x-3)=77
x²-3x+x-3=77
x²-2x-3=77
x²-2x-3-77=0
x²-2x-80=0
(x-10)*(x+8)=0
x-10 = 0
x=10
x+8=0
X=-8
Answer:
20 blocks per pound
Step-by-step explanation:
We can see the line of best fit goes through the points (0, 0) and (5, 100). WE will use these to find the slope:

Using our points,

This makes the slope 20 blocks per pound.
Answer:
The answer would be: We are 95% confident that the interval from 55.4 seconds to 61.2 seconds actually does contain the true value of μ.
Answer:
c
Step-by-step explanation:
there are 8 parts and 4 of them are red= 4/8
which simplifies to 1/2