Answer:
<h2>5x^2 - 11</h2>
Step-by-step explanation:
We got to add these together so
2x^2-8x-9+3x^2+8x-2
the 2x^2 and 3x^2 add to 5x^2
the 8x and -8x cancel each other out
the -9 and -2 add to -11
so..
5x^2 - 11
I hope this helped :)
Answer:
34
Step-by-step explanation:
Using PEMDAS (parentheses, exponent, multiplication, division, addition, subtraction), we solve what's in the parentheses first, so the expression looks like: 12 x 2 +10.
Then since there aren't any exponents, we solve the multiplication problem in the expression: 24 + 10.
Which just leaves addition, which gives us our answer: 34
Hope this helps!
Answer:
Step-by-step explanation:
The correlation coefficient is a number between -1 and 1. It tells us the strength of the linear association and the direction.
We want to find the r-value indicating a strong negative correlation. A negative number indicates a negative correlation. Therefore, choices A and C can be eliminated, because they are positive numbers.
Now we are left with B (-0.1859) and D (-0.9874). The closer the r-value is to -1/1, the stronger the correlation. -0.9874 is much closer to -1 than -0.1859, so <u>choice D</u> is the stronger correlation.
Answer:
Volume=480
Weight=62400pounds
Step-by-step explanation:
Volume=10x12x4
Volume=480
Density=130
Density=mass/volume
130=mass/480
Mass=130x480
Mass=62400
One is positive and the other is negative
