On your calculator, make sure you're in radian mode, not degree mode, that you are in a trig coordinate plane (do this by hitting "zoom" and choosing ZTrig), and when you enter the function into the "y =", you have to enter it in like this: 7cos(2x)-3. Hit "graph" and you'll see that the wave goes through the x-axis in 4 places within your specified interval. Hit 2nd and "trace" and then "zero". Move your cursor so it's just above the x-axis where the curve goes through and hit enter, then move it so it's just below the x-axis where the curve goes through and hit enter again. Hit enter a 3rd time, and you SHOULD see that your x has a value while y = 0. Do that for all of the places where the curve goes through the x-axis. That's how you find the zeros of a trig curve (or any curve, for that matter) on a calculator. The zeros are the solutions. If this was solvable like a regular equation, using trig identities and right triangles, you wouldn't have to use your calculator. But just like when you go to factor a second degree polynomial and you're having trouble with it you can use the quadratic formula and it's never-fail, neither is your calculator.
Answer:
x = -2
x+3y = 4
This is the substitution method. You need to plug the -2 in x's place to get y.
-2+ 3y = 4
3y = 4+2
3y = 6
y= 6/3
y= 2
Based on Ruth's contribution from her biweekly checks to her individual health care, the total cost of her coverage is $9,750.
The amount the employer contributes is $7,995.
<h3>How much does Ruth pay for insurance?</h3>
The total amount that Ruth pays for her individual health care is:
= 67.50 x 52weeks /2 because she pays biweekly
= $1,755
The total individual health care is:
= 1,755 / 18%
= $9,750
The amount that the employer contributes is therefore:
= Total health care amount - Amount paid by Ruth
= 9,750 - 1,755
= $7,995
Find out more on employer contribution for insurance at brainly.com/question/14230037
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if there is more than 1 x u add the exes but you dont add the exes with the other numbers so in this case you would do 7 x 2/3 and you would leave the x alone
I hope this helps you
x.x+x.b+x.a+a.b
x^2+(b+a).x+a.b
a.b=8
a=1 b=8
a+b=k
k=1+8=9
a=2 b=4
k=2+4=6
a= -1 b= -8
k= -1-8=-9
a= -2 b= -4
k= -2-4=-6