Answer:
number of scores between 490 and 610 is = 0.68 x 300 = 204
Step-by-step explanation:
The concept of Probability distribution is applied as it relates to the Z-scores.
Z = X - Mean /Standard deviation
The detailed steps and appropriate substitution is as shown in the attached file.
Answer:
Qstn 7 answer 8x^2 - 6x
Qstn 8 answer 2x - 5
Qstn 9 and 10 will take time
Step-by-step explanation:
please mark it brainliest
Let e be the amount of 1.35 beans and c be the amount of 1.05 beans...
(1.35e+1.05c)/120=1.15 we know e+c=120, so e=120-c making the equation:
(1.35(120-c)+1.05c)/120=1.15
(162-1.35c+1.05c)/120=1.15
162-0.3c=138
-0.3c=-24
c=80, and since e=120-c, e=40 so:
80 lb of the $1.05 beans are mixed with 40 lb of the $1.35 beans to produce a 120 lb mixture worth $1.15 per pound.
Two angles are supplementary if their sum is 180 degrees.
Here we are given:
Angle GHI measures (28x + 40)° and angle JHI measures (7x)°.
Sum of angle GHI and JHI is 180.
dividing both sides by 35,
x=4
Now let us find angle JHI
angle JHI = 7x = 7*4 =28
Answer : Angle JHI is 28 degrees.
a. factor A = x^2 -30x + 225 = (x - 15)(x - 15)
side length =<u> (x - 15)</u>
b. add (x - 15) four times = 4(x - 15) =<u> 4x - 60</u>
