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Inessa [10]
4 years ago
8

If y varies inversely as x, and y = 5 as x = -2, find y for the x-value of 3.

Mathematics
2 answers:
mr Goodwill [35]4 years ago
6 0
Since y varies inversely to x
xy = k
so 5*-2 = -10

plug x and k into xy = k

-10 = 3y
divide both sides with 3
y = -10/3  or -3.3333
sergiy2304 [10]4 years ago
5 0
Y varies inversly as x means
y=k/x

k is constantt
find k

so
5=k/-2
times -2 both sides
-10=k

y=-10/x

when x=3

y=-10/3
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6 0
4 years ago
The sum of two numbers is -18. If the first number is 10, which equation represents this situation, and what is the second numbe
ki77a [65]
Don’t know if there’s much of an equation for it, but I guess the best way to write it out is 10 + x = -18. Then, you would subtract the 10 from both sides in order to isolate the x. So then you’re left with x = -28. So -28 is your answer.
8 0
3 years ago
Help this will save my grade. I’m right on the edge of failing!
8090 [49]

Answer:

Step-by-step explanation:

1.  The slope is -5/2

2. There is no slope for the second one it's just y=3

3. The slope is 3

4. These are perpendicular lines

5. These lines are parallel.

6. These lines are neither perpendicular nor parallel.

7. These lines are perpendicular

8.  y = 4/3x - 2

9.  y = -1/2x + 5

10. x = -1  

Hope this helps!

5 0
3 years ago
HELP PLEASE. I don't understand this
Musya8 [376]
Repeating &/&/:$:38$:$;
3 0
3 years ago
Read 2 more answers
What is 3/8 equal to in decimals..?
MrRissso [65]

Answer: 0.375

Step-by-step explanation:

Hey there! If you have any questions feel free to leave them in the comments below.

To find the answer you would divide the numerator by the denominator. \frac{3}{8} would be equal to 0.375

~I hope I helped you :)~

3 0
3 years ago
Read 2 more answers
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