Answer:
3.2
Step-by-step explanation:
First, evalue what's inside of the absolute value:
3.1 + (-6.3) = -3.2
Now, since absolute value means the distance from the number to 0, the absolute value of -3.2 is the negation of -3.2:
|-3.2| = 3.2
I would add, the weight of the backpack and the weight of the school books which is 28.36.
So Rico's backpack altogether weighs 28.36.
I'm pretty sure.
Answer:
(-4, -8)
Step-by-step explanation:
Let the coordinates of common point of the given lines are (x, y),
Thus, the slope of the line passes through the points (a, b) and R(4,2) is,
2 - b
m1 = ------
4 - a
Again, the slope of the line passes through two points P(-6,4) and Q(4,-4),
-4 - 4 -8 -8 -4
m2 = ------ = --------- = --------- = ---------
4- (-6) 4 + 6 10 5
= m1 * m2 = -1
2 - b -4
= ------- x ---- = -1
4 - a 5
8 - 4b
= ----------- = 1
20 - 5a
= 8 - 4b = 20 - 5a
= 5a - 4b = 12 --------- equation 1
<u>For a = -6 and b = -10</u>
5 x -6 - 4 x 10 = -70 ≠ 12
<u>For a = -4 and b = -8</u>
5 x -4 - 4 x - 8 = 12 = 12
<u>For a = 0 and b = -1</u>
5 x 0 - 4 x -1 = 4 ≠ 12
<u>For a = 2 and b = 4</u>
5 x 2 - 4 x 4 = -6 ≠ 12
therefore Second is correct
hope it helps and i get the brainliest.
Answer:
Choice C: Lauren is faster than Kevin, slower than Jeremy.
Step-by-step explanation:
Ok, so it directly says that Jeremy is going at y=12x, or 12 miles per hour. To find how fast Kevin is riding, take two points of the table and use the slope formula to get the speed(.
Slope Formula: (y2-y1) / (x2-x1)
So lets take the table plots (2, 22) and (4, 33) to do this.
(y2-y1) / (x2-x1)
(33-22) / (4-2)
(11) / (2)
The speed of Kevin is 5.5 miles by hour.
Then, it asks for how fast Lauren is going, saying she is twice as fast as Kevin. Therefore, simply do:
5.5 * 2 = 11 miles per hour
To get the third biker's speed.
Now, with all of the speeds of the bikers, we can now compare them. Here's a listing of their speeds to make things easier to compare:
Jeremy: 12 mph
Kevin: 5.5 mph
Lauren: 11 mph
From this, we can see that Lauren is the second fastest. She is slower than Jeremy but faster than Kevin. Therefore, the correct answer choice is C.
Answer:
a. x+8=21
b. x = 13
Step-by-step explanation:
