I think the answer is 142
Answer:
92
Step-by-step explanation:
Let the number be x.
As per the question,
3/4x - 18 = 1/2x + 5
(4)3/4x - (4)18 = (4)1/2x + (4)5
3x - 72 = 2x + 20
x = 92
The number is 92.
Squared is just another way of saying to the power of two, just like how a 5 to the power of 3 is also called five cubed.
Answer:
B. about 40 miles
Step-by-step explanation:
We need to find the miles traveled per hour. We can do this by taking the total number of miles traveled and divide it by the time it took to travel that distance. Converting 7 and 3/4 hours to decimals is 7.75 hours.
328.9 miles / 7.75 hours = 42.44 miles/hour
The closest answer is B, about 40 miles.
So here's PEMDAS:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
So we will complete this equation in that order. So first is solving the problem within the <u>parenthesis:</u>
<em>(12)</em> ÷ 4 · 7 - 4² ÷ 4 =?
Then we solve all the parts including an <u>exponent:</u>
12 ÷ 4 · 7 - <em>16</em> ÷ 4 = ?
Next, we solve the parts with<u> multiplication: </u>
12 ÷ <em>28</em> - 16 ÷ 4 = ?
Then, we solve for all the <u>division:</u>
<em>0.43</em> - <em>4</em> = ?
If there was any addition we would do that next, but because there is none, we move onto<u> subtraction:</u>
0.43 - 4 = -3.57
So, your <u>answer</u> is -3.57