Answer:
(2,-3)
Step-by-step explanation:
I am not sure if you meant the first equation to be y or -y. I solved it as y.
y = x-5 -x -3y =7
I am going to take the second equation and write it as x =
-x - 3y = 7 Give equation
-x = 3y +7 Add 3y to both sides
x = -3y-7 Multiplied each term in the equation by -1 so that x could be positive
I am going to substitute -3y-7 for x in the first equation up above
y = x - 5
y = -3y -7 - 5 Substitute -3y-7 for x
y = -3y -12 Combined -7-5
4y = -12 Added 3y to both sides
y = -3 Divided both sides by 4.
I now know that y is -3, I will plug that into x = -3y-7 to solve for x
x = -3(-3) -7
x = 9-7 A negative times a negative is a positive
x = 2
Answer: 59
Step-by-step explanation:
Mi said so
Due to the u-shaped graph suggested by these data points, this would best be matched with a quadratic function.
Answer:
B) x=0
Step-by-step explanation:
x +20+ 10x= 9x +20
1st step: simplify the left side by combining like terms
10x+x=11x
2nd) 11x+ 20= 9x +20
Next, you subtract 11 and 9 which is equal to 2.
2x+20=20
Now, the 20 cancels out the other twenty so your left with 2x which is not an answer, therefore the only other number is 0 to be possible.
Check: 0+20+0=20 (first expression)
0x9=0 0+20= 20 (2nd expression)
20 = 20 so this is CORRECT!!!!!!!!
The area of a circle is Pi * R^2 (or R * R).
Since we have our radius, R, we can solve.
With our given answer choices, we do not need to multiply R by Pi, instead we will square R, as that's our only option.
4.5 x 4.5 = 20.25.
Our area is now 20.25Pi.
Your answer is C.) 20.25Pi.
I hope this helps!
