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NikAS [45]
4 years ago
7

Y varies directly y a x . if x =5 when y =122 find x when y=30

Mathematics
1 answer:
marysya [2.9K]4 years ago
5 0
1.22 you put the numbers into a proportion and cross multiply divide
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Which situation could be represented by the graph?
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Linear functions parabola mostly things in algebra
4 0
4 years ago
I don't want the answer, but I want to know how you got that answer.
anastassius [24]

Answer:

n = 5

Step-by-step explanation:

4n+5n+15=5n+7n\\\\9n+15=12n\\\\9n+15-15=12n-15\\\\-3n=-15\\\\\frac{-3n=-15}{-3}\\\\ \boxed{n=5}

Hope this helps.

8 0
3 years ago
Body fat percentage was found to be 16.5% and the person weighs 124 pounds what part in pounds of the body weight is fat
puteri [66]

Answer:

20.46 pounds

Step-by-step explanation:

  1. Since 16.5% of their body is fat you need to multiply the weight by that percentage
  2. you can do this by multiplying 124 by .165 which equals 20.46 pounds
7 0
4 years ago
A bag contains 4 red marbles and 6 blue marbles. Brandon selects one marble from the bag. Without replacing the marble he then s
IgorC [24]

The probability would be 4/15

4 0
4 years ago
Part A. Let $f(x) = x^4-3x^2 + 2$ and $g(x) = 2x^4 - 6x^2 + 2x -1$. Let $a$ be a constant. What is the largest possible degree o
Varvara68 [4.7K]

Answer:

  A.  4

  B.  1

Step-by-step explanation:

The degree of a one-variable polynomial is the largest exponent of the variable.

__

<h3>A.</h3>

For f(x) = x^4 -3x^2 +2 and g(x) = 2x^4 -6x^2 +2x -1, the sum f(x) +a·g(x) will be ...

  (x^4 -3x^2 +2) +a(2x^4 -6x^2 +2x -1)

  = (1 +2a)x^4 +(-3-6a)x^2 +2ax -a

The term with the largest exponent is (1 +2a)x^4, which has degree 4. This term will be non-zero for a ≠ -1/2.

The largest possible degree of f+ag is 4.

__

<h3>B.</h3>

The polynomial sum is ...

  f+bg = (1 +2b)x^4 +(-3-6b)x^2 +2bx -b

When b = -1/2, the first two terms disappear and the sum becomes ...

  f+bg = -x +1/2 . . . . . . a polynomial of degree 1

The smallest possible degree of f+bg is 1.

5 0
2 years ago
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