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JulsSmile [24]
3 years ago
14

The value of y is inversely proportional to the value of x. When y=42,x=6. What is the value of y when x=9?

Mathematics
1 answer:
o-na [289]3 years ago
7 0
Y= k/x
When y=42, x=6
42= k/6
k= 42x6
=252
When x=9,
y= 252/9
= 28
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5x-8y=29 find y when x= -1
Anettt [7]

Answer:

-4.25

Step-by-step explanation:

When x = -1, the equation is 5(-1) - 8y = 29. This simplifies to -5 - 8y = 29. Add 5 to both sides to get -8y = 34. Divide -8 from both sides to get y = -4.25.

Hope it helps!

7 0
3 years ago
In how many different ways can 5 books be arranged on a shelf?
lions [1.4K]
Permutation:

5! = 5 * 4 * 3 * 2 * 1 = 120
7 0
3 years ago
I don’t understand what to solve.
White raven [17]
Well since it gives you 2 gas stations it wants you to compare prices

Als gas station will be A
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since station A has $3.259/ gallon I assume
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just subtract them

so 3.259 -3.199 = 0.06

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3 0
3 years ago
Which graph best represents the feasibility region for the system shown above? ( pics are in this)
zalisa [80]

Consider the system of inequalities

\left\{ \begin{array}{l}  y\ge 2 \\  x\le 6 \\  y\le 3x+2 \\  y\le -x+10. \end{array}\right.

1. Plot all lines that are determined by equalities (see attached diagram)

\left\{ \begin{array}{l}  y=2 \text{ (red line)} \\  x= 6  \text{ (blue line)}\\  y=3x+2 \text{ (green line)} \\  y= -x+10  \text{ (orange line)}. \end{array}\right.

2. Determine which bounded part of the plane you should select:

  1. y\ge 2 means that you should take points with y-coordinates greater than or equal to 2 (top part of the coordinate plane that was formed by the red line);
  2. x\le 6 means that you should take points with x-coordinates less than or equal to 6 (left part of the coordinate plane that was formed by the blue line);
  3. for y\le 3x+2 you can check where the origin is placed. Since 0\le 3\cdot 0+2, the origin belongs to the needed part and you have to take the right part of the coordinate plane that was formed by green line.
  4. for y\le -x+10 you can check where the origin is placed. Since 0\le -1\cdot 0+10, the origin belongs to the needed part and you have to take the bottom part of the coordinate plane that was formed by orange line.

3. According to the previous explanations, the shaded region is as in A diagram.

Answer: correct choice is A.


5 0
3 years ago
Read 2 more answers
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iragen [17]

Answer:

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Step-by-step explanation:

every 8mins 4 laps are run

3 0
2 years ago
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