Lets solve this step by step.
A is not a positive because (-9)*8=-72.
B if positive because -12*(-3)=36. A negative times a negative is a positive.
C is also a positive because (-2/5)*(-4) is a positive.
D is not a positive because like A, one is negative and the other number is positive. A negative times a positive is a negative.
I hope it helped!
Answer:
13
Step-by-step explanation:
390 divided by 30 equals 13
Answer:
R ≥-4
Step-by-step explanation:
Substitute
2r-1>-3r-21
+3r
5r-1>-21
5r>-20
Divide 5
R>-4
Z = 140
X = 40
Y = 40
Explanation:
Z and the angle given (140 degrees) are vertical angles, and are therefore congruent
We know that x and y are vertical angles, so they are also congruent to each other
You know that together, the angles have to add up to 360
140 + 140 + x + y = 360
Another way of putting it:
360-280 = 80
Now, we have to divide by two since we need to find x AND y
80/2 = 40
Therefore, your answers for x and y are 40
To double check, you can add up the angles and see if they equal 360
140 + 140 + 40 + 40
280 + 80 = 360
Answer: If you are looking to factor, then the answer would be (x-1)(x^3+x^2+x+9)
Step-by-step explanation: You can use the rational root theorem which we can express (x-1)x^4+8x-9/x-1 and this can be simplified to (x-1)(x^3+x^2+x+9)