<h3>Solution:</h3>
firstly solve parenthesis bracket ( )
-4×3 + 4×5x ≥ -6x + 9
-12 + 20x ≥ -6x + 9
Add 12 on both sides
-12 + 12 + 20x ≥ -6x + 9 + 12
20x ≥ -6x + 21
Add 6x on both sides
6x+ 20x ≥ -6x + 6x + 21
26x ≥ 21
divide both side by 26
26 x/26 ≥21/26
x ≥21/26
Answer:
You need to know the accuracy to which you can read the ruler:
Suppose that you can read the read the ruler to the nearest milimeter
A = L * W your calculated area of the rectangle
A + ΔA = (L + ΔL) * (W + ΔW) = L W + L ΔW + W * ΔL + ΔL ΔA
Or ΔA = L ΔW + W ΔL
Where we have subtracted A = L * W and the term ΔL * ΔA is very small
So (5 + .1) * (2 + .1) - 5 * 2 = .1 * 2 + .1 * 5 = .7 cm^2
Then you report A = 10 cm^2 +- .7 cm^2 including the - sign for completeness
There are no appropriate definitions on the
list of choices that you've included.
And what does "the following" mean anyway ?
Answer:
7.19 * 10^14J
Explanation:
Given that
Density of water Pwater= 1000kg/m3
R=2.1km = 2.1*10^3m
H= 2.3cm. = 2.3*10^-2m
Lv water= 2256 * 10^3J/kg
First, mass of water need to be calculated, using an imaginary cylinder
Density= Mass /Volume
Mass= Density* Volume
Volume of a cylinder= πR2h
Therefore mass= PπR2H
= 1000 * π * (2.1 *10^3)^2 * (2.3 * 10^-2)
= 3.18 *10^8
Heat Released Qv = mLV
= 3.18*10^8 * 2236*10^3
= 7.19 * 10^14J