Answer:
Step-by-step explanation:
To solve each of these all you have to do is multiply 60kg which is the whole mass of a human body times the percentage so..
Oxygen = (0.65)(60) = 39kg
Carbon = (0.18)(60) = 10.8kg
Hydrogen = (0.10)(60) = 6
Nitrogen = (0.03)(60) = 1.8kg
Calcium = (0.015)(60) = 0.9kg
Phosphorus = (0.01)(60) = 0.6kg
These numbers dont exactly add up to 60 because the percentages gives dont add up to 100%, but this is how to do it.
-x^2 - 5x - 4 = -x^2 + 9x - 18
-5x - 9x = -18 + 4
-14x = -14
x = -14/-14
x = 1 <====
y = -x^2 - 5x - 4
y = (-1^2) - 5(1) - 4
y = 1 - 5 - 4
y = 1 - 9
y = -8 <====
Answer:
Identity Property (of 0)
Step-by-step explanation:
The graph<span> of an </span>inequality in two variables<span> is the set of points that represents all solutions to the </span>inequality<span>.
A </span>linear inequality<span> divides the coordinate plane into </span>two <span>halves by a boundary line where one half represents the solutions of the </span>inequality. The boundary line is dashed for > and < and solid for ≤ and ≥.<span>A way to solve a linear system algebraically is to use the substitution method.
</span>The graphs of equations<span> within a </span>system<span> can </span>tell<span> us how </span>many solutions<span> exist for </span>Infinite Solutions<span>. </span>If <span>the graphs of the </span>equations<span> intersect, then there is </span>one solution<span> that is true for Looking at the graph does </span>not tell<span> us exactly where that point is, but we don't So a </span>system<span> made of two intersecting lines </span>has one solution.
Two equations that have the same solution are called equivalent<span> equations e.g. The addition </span>property<span> of equality tells us that adding the same number to. We can also </span>use<span> this example with the pieces of wood to explain the </span><span>are </span>equal<span> as well.</span>
