A<b<c
b is the square root of 20
if we square everybody
a²<b²<c²
if we say that b²=20 then
a²<20<c²
find a and c
2^2=4
3^2=9
4^2=16
5^2=25
16<20<25
sqrt both sides
4<√20<5
somewhere between 4 and 5
closer to 16 than 25
A
A number line goes from negative 10 to positive 10. An open circle appears at negative 9. The number line is shaded from negative 9 through positive 10.
Step-by-step explanation:
The inequality is given as;
-3x-7<20 which can be solved as
-3x < 20+7 -----collecting like terms
-3x < 27 -------divide both sides by -3
x > -9 -----change the sign direction because you divided by
plotting the solution x > -9 on a graph tool gives
Learn More
solving inequalities by graph :brainly.com/question/11688212
Keywords : number line, open circle, solution, graph, inequality
#LearnwithBrainly
Answer:
121 unit^2.
Step-by-step explanation:
The area = height/2 * ( sum of the opposite parallel lines)
= h/2(BC + AD
h = BF = 14 - 3 = 11 units.
BC = 13 - 5 = 8 units.
AD = 16 - 2 = 14 units.
Area = (11/2)(8 + 14)
= 5.5 * 22
= 121 unit^2.
A=pi r^2
<span>then use your rate of $4.60/m^2 and multiply that by your area. </span>
<span>A = 3.14 (.8^2) </span>
<span>Cost = 2.01 m^2 $4.60/m^2 = $9.24
So your answer would be B</span>
When the balloon is on the ground, it is at point 0. It starts to go up at 5 f/m for a time of 4 minutes. So we will multiply 5 by 4 to get 20. At this point, the balloon is 20 feet off the ground. However, we now know that the balloon descends at 2 f/m at a time of 7 minutes. So we must multiply 2 by 7 to get 14. So we know it was at 20, and then it went down by 14.
20 - 14 = 6 feet
This means that the balloon is now 6 feet above the ground.
I hope I've helped! :)