First you have to combine like terms, which are x and -.49x. You then get 0.51x. The equation now becomes .51x=5045.53. You then divide .51 on both sides. On the left you are left with x and on the right you are left with x=9893.19608.
To know the exact value of <span> tan(157.5°), you only have to enter the value in your calculator:
First, press the buttton identified as "tan" and then write 157.5. The next step you must follow is press the button with the symbol of equal: "="
Now, the value of tan(157.5°) will appear on the screen of you calculator.
As you can see, the exact value of </span>tan(157.5°) is:
tan(157.5°)=-0.4142
Answer:
x = -4, 5/2
Step-by-step explanation:
A quadratic can be solved may ways, including graphing, factoring, and the quadratic formula. You can also check possible answers by making use of the relationships between solutions and the coefficients.
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A graph is attached. It shows the solutions to be -4 and 5/2.
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When factored, the equation becomes ...
(2x -5)(x +4) = 0 . . . . . has solutions x=-4, x=5/2 (these make the factors zero)
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Using the quadratic formula, the solutions of ax^2 +bx +c = 0 are found from ...
x = (-b±√(b²-4ac))/(2a)
x = (-3±√(3²-4(2)(-20))/(2(2)) = (-3±√169)/4 = {-16, +10}/4
x = {-4, 5/2}
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For ax^2 +bx +c = 0, the solutions must satisfy ...
product of solutions is c/a = -20/2 = -10
Only the first and last choices have this product.
sum of solutions is -b/a = -3/2
Only the first choice (-4, 5/2) has this sum.
Answer: 2/5
Step-by-step explanation:
Multiply and do math
Answer:
m(x)= 0 when X= 3
Step-by-step explanation:
2*3=6
6-6=0
For (2x-6)
3-4=-1
So -1*0=0
it can also be look at like this (0,-1)