Answer:
1.75= X
Step-by-step explanation:
4x+2=8x-5
<em>-4x -4x</em>
2=4x-5
<em>+5 +5</em>
7=4x
<em>divide by 4</em>
1.75=x
Mark brainilst plzzz
2x-8=x+4
Get the x to the other side and the 8 to the opposite
2x-x=4+8
X=12
Answer:
angle D equal to 3 X + 20 + 7 x minus 3 x
=90 degree equal to x minus 3 X + 20
7 X equal to 70 X equal to 10
Answer:
15 games
Step-by-step explanation:
80% of 15 is 12, it's as easy as that. Hope it helps!
Answer:
0.6563 or 65.63% of brook trout caught will be between 12 and 18 inches
Step-by-step explanation:
Mean trout length (μ) = 14 inches
Standard deviation (σ) = 3 inches
The z-score for any given trout length 'X' is defined as:
e interval
For a length of X =12 inches:

According to a z-score table, a score of -0.6667 is equivalent to the 25.25th percentile of the distribution.
For a length of X =18 inches:

According to a z-score table, a score of 1.333 is equivalent to the 90.88th percentile of the distribution.
The proportion of trout caught between 12 and 18 inches, assuming a normal distribution, is the interval between the equivalent percentile of each length:
