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Diano4ka-milaya [45]
3 years ago
15

Y varies directly with x. If y = 75 when x =25, find x when y = 25.

Mathematics
2 answers:
nexus9112 [7]3 years ago
5 0

75y:25x

25y:?x

75/25=3

25*3=75

x=75

masya89 [10]3 years ago
4 0

Answer:

25/3

Step-by-step explanation:

y = kx

75 = k * 25

k = 75/25 = 3

y = 3x

25 = 3x

x = 25/3

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We can cross multiply to solve for x:

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3 years ago
Given the system of linear equations:
Vanyuwa [196]

Answer:

Step-by-step explanation:

hello :

Part A :  x+6y =6 means : 6y = - x+6

so : y = (-1/6)x+1  an equation for the line (D)

     y = (1/3)x -2 is the line (D')

PartB : solution of the system  : y = (-1/6)x+1 ....(1)    color  red

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is the intersection point : (6 ; 0)

PartC : Algebraically  by (1) and (2) : (-1/6)x+1 =  (1/3)x -2

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3 0
3 years ago
This is very hard for me I need to know how to do it
insens350 [35]

The zeros of a function are the values of x that make the function be equal to zero.

When graphing a quadratic equation, the graph is a parabola, and the zeros of the function are the x-intercepts of the graph, which are the points where the graph intersects the x-axis.

So, if the zeros of this function are x = -8 and x = 2, that means the parabola crosses the x-axis at x = -8 and x = 2.

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6 0
10 months ago
It takes 22 hours for a hosepipe with a flow of 12 litres per minute to fill a swimming pool. How long will it take if its flow
Monica [59]

Answer:

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Step-by-step explanation:

The volume of the swimming pool can be written as;

Volume V = flow rate × time

V = R×t

V = R1×t1 = R2×t2

R1×t1 = R2×t2

t2 = R1×t1/R2 ........1

Given;

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time t1 = 22 hours

Substituting the given values into equation 1;

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13 is the answer if I'm correct
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