The expression for the total number of miles he drove in the two weeks is m + 153
<h3>How to determine the expression for the total number of miles he drove in the two weeks?</h3>
The given parameters are
Last week = m miles
This week = 153 miles
The expression for the total number of miles he drove in the two weeks is
Expression = Last week + This week
This gives
Expression = m + 153
Hence, the expression for the total number of miles he drove in the two weeks is m + 153
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Caitlin has 27 $5 bills and 54 $10 bills.
Step-by-step explanation:
Given,
Worth of $5 and $10 bills = $675
Let,
Number of $5 bills = x
Number of $10 bills = y
According to given statement;
5x+10y=675 Eqn 1
She has twice as many $10 bills as $5 bills.
y=2x Eqn 2
Putting value of y from Eqn 2 in Eqn 1
Dividing both sides by 25
Putting x=27 in Eqn 2
Caitlin has 27 $5 bills and 54 $10 bills.
Keywords: linear equation, substitution method
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Answer:
x=2 and x=12
Step-by-step explanation:
|2x+1| = |3x-11|
2x+1 = 3x-11
2x = 3x-12
-x = -12
x = 12
2x+1 = -(3x-11)
2x+1 = -3x+11
5x+1 = 11
5x = 10
x = 2
The correct answer is: -18 .
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9i * 2i = 18 i² .
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" i " is an imaginary number equal to "√(-1) " .
" i² " = [√(-1)] ² = √(-1) * √(-1) = -1 .
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18 * i² = 18 * -1 = -18 .
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Do Error = rate x actual
This helped me lots and I got an 85% on my quiz just by using this method
