Simplify 7 + (−3). (1 point) −10 −4 4 10
1 answer:
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Answer:
Step-by-step explanation:
According to the "rules" of significant figures, all the zeroes to the right of the final non-zero number are <em>not </em>significant, unless there is a decimal point.
We are given the measurement:
84,000 kg
If there was a decimal point (84,000.0 kg), then there would be 5 significant figures.
Since there isn't a decimal point, all 3 zeroes to the right of the number 4 aren't significant. The 8 and 4 are significant, so there are <u>2 significant figures</u>.
Madison purchased 5 cans of soup and 7 frozen dinners.
Step-by-step explanation:
Given,
Quantity of sodium in each soup can = 500 mg
Quantity of sodium in each frozen dinner = 700 mg
Total quantity = 7400
Let,
Number of soup cans purchased = x
Number of frozen dinners purchased = y
According to given statement;
500x+700y=7400 Eqn 1
y = x+2 Eqn 2
Putting value of y from Eqn 2 in Eqn 1
Dividing both sides by 1200
Putting x=5 in Eqn 2
Madison purchased 5 cans of soup and 7 frozen dinners.
Keywords: linear equation, substitution method
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