Answer:
10; 4
Step-by-step explanation:
10 units to the right and
4 units 4
Let airspeed of the plane be x mph and wind speed = y mph. Then we have the following system of equations
x - y = 1160 / 4.833 = 240.0166
and
x + y = 1160 / 4 = 290
adding the 2 equations:-
2x = 530.0166
x = 265 mph = airspeed of the plane
y = 290 - 265 = 25 mph = speed of the wind
Answer:
x= 4, -7
Step-by-step explanation:
x^2+3x-28
x^2 multipled by -28 = -28
Which two numbers add up to 3 and multiply to -28?
-4 and 7
-4 + 7 = 3
-4 x 7 = -28
so
(x−4)(x+7)=0
4-4=0
-7+7=0
<span>Assuming that the "given intercepts" are (a,0) and (0,b), the equation of the line thru these 2 pts. is easily found thru use of the point-slope formula:
b-0
m = -------- = -b/a
0-a
Then y-0 = (-b/a)(x-a), or y = (-b/a)(x-a) (answer)</span>
Answer: 306
Step-by-step explanation:
Formula to find sample size:
, where = standard deviation, E = margin of error, z* = critrical z-value.
As per given,
Critical z-value for 99% confidence = 2.576
Now , the minimum sampl size :
Hence, the required sample size = 306