Answer:
9+20t
Step-by-step explanation:
Look at the terms and see which has t and which is a number when you see like terms, add them or subtract them together to get like terms.
Answer: 72
Step-by-step explanation:
convert 68% to decimal:
0.68
Multiply by 225
0.68*225
= 153
Subtract:
225-153=
72
The option fourth "There is a strong negative relationship between x and y" is correct.
<h3>What is correlation?</h3>
It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.
The options are:
- There is no relationship between x and y.
- There is a weak negative relationship between x and y.
- There is a strong positive relationship between x and y.
- There is a strong negative relationship between x and y.
We have data:
x 7 8 9 10 11 12 13
y 13 10 7 6 5 3 0
The value of correlation r = -0.9847
As we know the value of r between -1 to +1
If r = 1 (perfect and positive correlation)
if r = -1 (perfect and negative correlation)
We have r = -0.9847
The value is near to -1 which means there is a strong negative relationship between x and y.
Thus, the option fourth "There is a strong negative relationship between x and y" is correct.
Learn more about the correlation here:
brainly.com/question/11705632
#SPJ1
Answer:
12 integers
Step-by-step explanation:
We want two-digit numbers, so let's provide two spaces:
__ __
In the first space, any of the four given numbers (1, 3, 5, and 9) can go there, so we have 4 numbers to choose from for that.
In the second space, because no digit can be repeated, we're only down to 3 possible choices. Think about it this way: if 1 was the first digit, then it can't be the second digit, so we now only have the numbers 3, 5, and 9 to put as the second digit; it's the same situation for any of the 4 numbers you put into the first digit place.
Now, multiply these two:
4 * 3 = 12
There are 12 such numbers.