Answer:
You already know the answer is -108
Step-by-step explanation:
There is probably a formula for finding the coefficient of a variable in an expansion. But (x-3) is easy to square, and that gives us
x^2 - 6x +9
Now to square that quadratic trinomial I used an area model. You can get the entire expansion. But we are just only interested in the x terms. See image. They are in yellow on the image. You can see we get -54x two times. So
-54x + -54x is the -108x term you are interested in.
Hello :
answer 10x+5y = -25<span>
5y= -10x-25
y= -2x -5... (</span><span>negative slope is : -2)
</span><span> the y-intercept equals-5 because : if x=0 : y=-5</span>
Answer:
Second Picture Top RIGHT
Step-by-step explanation:
6*3(dilation)=18 there is only one shape with a length of 18.
Answer:
x = π/6, π/2, 5π/6, 3π/2
Step-by-step explanation:
cos x = sin(2x)
Use double angle formula.
cos x = 2 sin x cos x
Move everything to one side and factor.
cos x − 2 sin x cos x = 0
cos x (1 − 2 sin x) = 0
Set each factor to 0 and solve.
cos x = 0
x = π/2, 3π/2
1 − 2 sin x = 0
sin x = 1/2
x = π/6, 5π/6
The total solution is:
x = π/6, π/2, 5π/6, 3π/2
Nina's property taxes will be $531.
We are starting with the amount of $2950. To find 18% of this amount, we just multiply the starting amount by 0.18
0.18 x 2950 = 531
The total amount of the taxes will be $531.