In general, √(y²) = |y|, since y can be positive or negative and y² would have the same value either way.
So,
1) if y > 0, then |y| = y, and
-15√(y²) = -15 |y| = -15y
2) if y < 0, then |y| = -y, and
-√(16y²) = -|4y| = -|4| |y| = -4 (-y) = 4y
40 over 100 and 55 over n cross multiply 55 x 100 and divide by 40.which gives you 137.5
Loretta:
Average driving speed = 55 mph
Time = 4 hours
Distance traveled = 55*4 = 220 miles
Dad:
Average driving speed = 65 mph
Let x = hours driven
Distance traveled = 65x miles
The length of the trip is 610 miles, therefore
65x + 220 = 610
65x = 390
x = 6 hours
Answer: Loretta's dad drove for 6 hours.
Answer:
5x^4
Step-by-step explanation:
<u><em>Re-order terms so constants are on the left</em></u>
x^2*x^2*5
5x^2*x^2
<em><u>Combine exponents</u></em>
5x^2*x^2
5x^4
<h2>(PLS GIVE <u><em>
brainliest</em></u>)</h2>
