Answer:
-1
Step-by-step explanation:
All you have to do is fill in -3 in for y and you will find your x.
I got; -1 Because
2x-(-3)=1
2x+3=1
-3 -3
2x/2=-2/2
x=-1
180/1.5 to get 120 so the first day they drove 120 miles
(if you don't wanna read all this the answer is at the bottom btw)
move the 7 over to equate the equation to 0
4x^2 - 12x -7 = 0
(ok now you have a (4), b (-12), and c (-7) here you can either use the quadratic formula to solve it or factor the equation)
to factor it, you have to multiply a and c (4*-7 = -28) and find two numbers that multiply to -28 and add to -12
the numbers are -14 and 2. sub those into the equation in place of b
4x^2 + 2x - 14x - 7 = 0
find the lcd of the first two terms and the last two terms to factor them
2x(2x + 1) - 7(2x+1) = 0
(2x -7) (2x+1) = 0
(x-7/2)(x+1/2) = 0
to find the two x values you need to find what values make the equation equal 0 on both sides.
so x is 7/2 or -1/2
1) add, equal
2) multiply, equal
3) subtract, equal
Answer:
30%
Step-by-step explanation:
In this question, we are to calculate the percentage of students who are female and do not play instruments.
We can first infer this from the table;
The number of females who do not play instruments = 64
The percentage of females who do not play instruments = number of females who do not play instruments/total number of students surveyed * 100%
That will be;
64/213 * 100% = 30.04 which is approximately 30%