3(x+5)=7-x3x+15=7-x4x=-8x=-2
Answer:
4x^2-81y^2 is NOT a perfect square trinomial, factored. You know this because if you factor this to (2x+9y)(2x-9y) then you will see that the signs between terms in the parenthesis are DIFFERENT.
Step-by-step explanation:
Taking notes as you go through the course will help you retain and process the information much better than getting "help" from a site that is probably badly named.
1) Never heard of someone referring to the Law of Levers before, must be showing my age. A system as you describe is at equilibrium when the net torque is equal to zero. Since torque is Fr=mgr so for this system we have a sum of:
27g*10+30g*x=0 The sum must be zero to be at equilibrium, dividing both sides by g you have:
270+30x=0
270=-30x
x=-9
The negative just indicates that the magnitude of 9 is on the opposite side of the fulcrum, so x=9ft in magnitude.
2) Inverse variation is of the form y=k/x, in this case we are given a point so we can solve for the constant, k, of variation...
y=k/x, and we are given y=-12 when x=5 so
-12=k/5
k=-60 so the equation is:
y=-60/x which can be expressed as
xy=-60
Answer:
A. Raheem
Step-by-step explanation:
it can't be any of the answers that have addition because -4 has to move up 8 spaces on the y axis to get to +4 and -2 needs to move up 4 spaces to get to +2 and you can only use 1 rule so A is correct
please give me brainliest
Answer:
Step-by-step explanation:
2. Each time x goes up on the left side 6 is removed from the right side f(x)= F(-6)
3. slope is y = -1/2 x + 4 the formula is y = mx+b so -1/2 x and b is the number that touches the line for y which is 4.
4. every time an x is added on the left side 3 are added on the right side f(3)
