Answer:
-81
Step-by-step explanation:
-6(2x² + 5x) - 9
substitute -4 for 'x'
-6[2(-4)² + 5(-4)] - 9
-6[2(16) + (-20) - 9]
-6(32 - 20) - 9
-6(12) - 9
-72 - 9 = -81
1. Equal, the associative property of addition
2. Equal, the associative property of Multiplication
3. Not equal, the first one came out 17 while the second was - 5.
4. Not equal, the first one came out as 9 whole the second one came out as 1.
5. Not equal since the first one came out as 32 the second, 0. 0 is zero, you would need to add 32.
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I hope that helps you out!!
Any more questions, please just ask me!!
~Zoey
Answer:
Coldest has - 2° C while warmest had 2 °C
There is no solution since the lines are parallel. (See attached graph)
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Hope this helps!</em></u></h2>
Answer:
Step-by-step explanation:
We can complete the squares of the x- and y-terms by adding the square of half the linear term coefficient.
(x^2 +4x) +(y^2 -10y) = 7
(x^2 +4x +4) +(y^2 -10x +25) = 7 + 4 + 25
(x +2)^2 +(y -5)^2 = 6^2
Compare to ...
(x -h)^2 +(y -k)^2 = r^2 . . . . . standard form equation of a circle
We see that the center is ...
(h, k) = (-2, 5)
and the radius is ...
r = 6