Answer:
So x = 20
Step-by-step explanation:
AB + BC = AC sum of a segment is sum of its pieces
AB + AB = AC B is the midpoint, so AB = BC
2x + 2x = 3x + 20 putting in for AB (twice!) and AC
4x = 3x + 20 collect like terms
x = 20 subtract 3x on both sides.
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324 is the answer to your promblem welcome
Answer:
yes I think so
Step-by-step explanation:
Answer:
only -7
Step-by-step explanation:
Just plug them in.
so for x=-7 
So this one is extraneous
Then if you plug -3 in you get 1 = 1 so this one is not extraneous. if you need me to work this one out let me know.
Step-by-step explanation:
1 mole of any substance = 6.022 * 10²³ molecules.
Number of moles of CO2
= (4.5 * 10¹⁶)/(6.022 * 10²³)
= 0.75 * 10^(-7)
= 7.5 * 10^(-8) mol.
