-2x +5 < 7
-2x < 2 . . . . . . subtract 5
x > -1 . . . . . . .. divide by -2, which reverses the relationship
The 1st selection is the correct one.
___
Check
Choose x = 0 > -1.
.. -2*0 +5 < 7
.. 5 < 7 . . . . . . . . . . true
Choose x = -1, not in the solution set.
.. -2*-1 +5 < 7
.. 7 < 7 . . . . . . . . . . not true, as expected
Answer:
Step-by-step explanation:Area of a circle is πr2
Diameter of the cover is 20feet
Radius= diameter/2
Radius= 20/2
Radius= 10 feet
Since 1feet = 0.3045m
Then 10feet =3.045m
Area= 3.142*3.045*3.045
Area= 29.133m2
0.55+0.54=1.08 and 0.54 divided by 2 is 0.28 which you add 1.08+0.27 which is 1.35. Your answer is 1.35
Answer:
a) About 2261.95
b) $11.94
Step-by-step explanation:
a) The lateral area of a cone can be calculated via A=πrl
b) Simple do 2261.95/400 and round to the nearest 1 to get 6. Then multiply 6 by 1.99 to get 11.94
Hope it helps <3
A + E + N = 122
E = 2N
A = 7 + E....A = 7 + 2N
(7 + 2N) + 2N + N = 122
5N + 7 = 122
5N = 122 - 7
5N = 115
N = 115/5
N = 23 <== North America
E = 2N
E = 2(23)
E = 46 <== Europe
A = 7 + E
A = 7 + 46
A = 53 <=== Africa
