Not sure what standard form is, but I can solve for x
so I'm assuming that x2 means x squared or x^2 so
x^2+7x+12=0
since it equals zero, if we can factor it, then
if we have xy=0 then x and/or y=0 so
to factor x^2+7x+12
find what 2 numbers multiply to get 12 and add to get 7 so
12=2 times 2 times 3 or 2 times 6 or 1 times 12 or 3 times 4
the numbesr are 4 times 3 so
x^2+7x+12
facotrs out to
(x+4)(x+3) so
x^2+7x+12=0
(x+4)(x+3)=0
set each to zero
x+4=0 and x+3=0
x+4=0
subtract 4 form both sides
x=-4
x+3=0
subtract 3 from both sides
x=-3
x=-4 or -3
The answer to the problem is 83
Answer:
Length = 3 ft
Step-by-step explanation:
If the equation for perimeter is p = 2 (L+W)
You can plug in the information you already have
1) 18 = 2 (L+6)
2) Simplify by first dividing 2 by itself to cancel it out and then by 18 which would equal 9 leaving you with the equation 9 = L+6
3) Now to leave the L alone on the right you need to cancel out the 6 by subtracting 6 from itself and then from 9 which would leave you with the equation and the answer to the problem, 3 = L
The answer to your question is 8, because you replace z with 2
Answer:
First, draw a quadrilateral figure QRST. Then, label angles RST, QST, and QSR.
Given:
mRST = 65
mQST = 2x
mQSR = 3x - 10
From the figure, angle RST is the sum of angles QST and QSR. Therefore:
mRST = mQST + mQSR
Substituting the values, the equation becomes:
65 = 2x + (3x -10)
Solve for x:
x = 15
Second awnser :
Upon drawing the triangles given, it may be observed that they share one common side, ST. Hence, m QSR is the sum of m RST and m QST. Mathematically,
3x - 10 = 65 + 2x
The value of x from the equation generated above is 75. Thus, the answer to the question above is 75.
Hope i got it