Answer:
h=19.6
Step-by-step explanation:
h+2.4=22
-2.4. -2.4
2.4-2.4 cancels out and subtract 22-2.4 and get 19.6 so you bring down the h and set the answer up like h=19.6
Answer:
$12,750
Step-by-step explanation:
The price at purchase = 3000 dollars
Sale = 325 percent increase in purchase price.
325% = 3.25
3.25x3000 = 9750 dollars
So, at 325 percent increase in price, this painting sold for $9750.
The retail price of this painting =
Price at purchase + price during sale
= 3000 + 9750
= $12,750
Therefore the retail price is equal to $12,750
Answer:
1236 sq. m
explanation:
Side of square field = 100m
Area of the square field = side * side
= 100 * 100
= 10,000 sq. m
A path of 3m wide is built outside and along the boundary.
Side of path = 100(from the side of field) + 3(from the upper side) + 3(from below)
= 100 + 6
= 106 metres.
Area of the along with whole square path with side 106m = side * side
= 106 * 106
= 11,236sq.m
Now, Area of whole square = Areas of square field + area of path
therefore, Area of the path only = 11,236 - 10,000
= 1,236sq.m
1.4171428571428571428571428571429 milimeters per year or,
0.14171428571428571428571428571429 centimeters per year.
Answer:
A) 99.74%
B) 633.6 hours and 986.4 hours
Step-by-step explanation:
Solution :
Given that ,
mean = u =810
standard deviation = sigma = 90
P(540< x <1080 ) = P[(540-810) /90 < (x - u ) / sigma < (1080-810) /90 )]
= P( -3< Z < 3)
= P(Z <3 ) - P(Z < -3)
Using z table
=0.9987-0.0013
= 0.9974
answer=99.74%
(B)
middle 95% of score is
P(-z < Z < z) = 0.95
P(Z < z) - P(Z < -z) = 0.95
2 P(Z < z) - 1 = 0.95
2 P(Z < z) = 1 + 0. 95= 1.95
P(Z < z) = 1.95/ 2 = 0.975
P(Z <1.96 ) = 0.975
z ±1.96
Using z-score formula
x= z * sigma + u
x= -1.96* 90+810
x= 633.6
Using z-score formula
x= z * sigma + u
x=1.96* 90+810
x= 986.4
633.6 hours and 986.4 hours