The mass of a grain of sand is about 10^-3 gram. About how many grains of sand are in the bag of sand?
1 answer:
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Answer:
AE = 18 units
Step-by-step explanation:
Δ AEB and Δ DEC are similar , then corresponding sides are in proportion, that is
=
, substitute values
=
( cross- multiply )
10(2x + 4) = 12(x + 8) ← distribute parenthesis on both sides
20x + 40 = 12x + 96 ( subtract 12x from both sides )
8x + 40 = 96 ( subtract 40 from both sides )
8x = 56 ( divide both sides by 8 )
x = 7
Then
AE = 2x + 4 = 2(7) + 4 = 14 + 4 = 18 units
Answer:
-2
Step-by-step explanation:
The x value is 1, and the y value is 0. Substitute these values into the equation.
y=2x-2
<u>Hope this helps :-)</u>
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