Hello :
the center of this cercle is : O( 0, 0)
calculate the slope m of the line : OA .. A (3,-4)
m= (yA - yO) / (xA- xO)
m = (-4-0)/(3-0)
m= -4/3
if : k the slope of the tangent : k×m = -1 (the tangent perpendiclar of : OA)
k× (-4/3) = -1
k = 3/4
an equation of this tangent is : y - (-4) = (3/4)(x-3)
Answer:
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Step-by-step explanation:
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3/20x = 9.......with x being the total cost of the food
x = 9 / (3/20)
x = 9 * 20/3
x = 180/3
x = 60 <===
Wouldn’t the answer be 16 because you have 3=u so you are going to plug it in like 5(3)+1 since you have parentheses you multiply 5x3 which is 15 then you would add 1 so I’m pretty sure the answer is 16.
Answer:
1) D: all real/(-inf, +inf) R: all real/(-inf, +inf)
2) x 5 or (-inf, 5)U(5,+inf)
Step-by-step explanation:
1) This is a linear equation, meaning that it has all real numbers all throughout.
This implies that you can plug in any x value and it will have a definite y value.
Domain is all reals or (-inf, +inf)
Range is all reals or (-inf, +inf)
2) We can see that if you plug in the number 5 for x, you would get 5-5 = 0 for the denominator. We can not divide a number by 0, therefore the domain is
x can not equal to 5 or (-inf, 5)U(5,+inf)