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mash [69]
3 years ago
15

In a direct variation y=18 when x=6

Mathematics
1 answer:
Nookie1986 [14]3 years ago
8 0

Answer:

y=18 when x=6 k = 3

Step-by-step explanation:

y varies directly as x

y= kx,where k is constant

there,making k the subject of the formulae

k=y/x

k=18/6

k=3

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7th grade math need asap. Lilliana is training for a marathon. She runs the same distance every day for a week. On Monday, Wedne
jolli1 [7]

Answer:

5 Laps

Step-by-step explanation:

The question says that she runs the same distance everyday. This shows us that...

2 laps on a running trail and 6 more miles = 4 laps on a running trail and 2 more miles

We can turn laps into the variable L and miles into the variable M to create an equation

2 L + 6 M = 4 L + 2 M

We can start by subtracting 2 M from both sides to get:

2 L + 4 M = 4 L

Now, we can subtract 2 L from both sides

4 M = 2 L

This tells us that 2 laps are 4 miles which means that 1 lap is 2 miles.

Now, we can break down either side of the equation. Let's break down

2 L + 6 M

First, we can turn the miles into laps. We know that 2 miles is one lap so we can divide 6 by 2. Our Equation:

2 L + 3 L

Now, we can simplify this :

5 L

Now we know that she ran 5 laps on saturday.

Hope this Helps!!! :)

Let me know in the comments if this answer was perfect or if I should change anything!!!

5 0
3 years ago
-7m= -49 <br><br>solve for x
Luba_88 [7]
Divide both sides by -7 and the result is m=7
5 0
3 years ago
Read 2 more answers
Find the nature of the roots of the roots of the equation (x-705)(x-795)+800(x-750)(x-835)=0.
alexandr402 [8]

Answer:

B

Step-by-step explanation:

If you are allowed to use a graphing calculator, this can solve a lot of time. Graphing y = (x - 705)(x - 795) + 800(x - 750)(x - 835) gets us a parabola with x-intercepts of 749.97 and 834.924.

These roots are real and distinct, or choice B.

If you aren't allowed to use a graphing calculator, you can expand and combine like terms to get 801x^2 − 1269500x + 501560475. Looking at the discriminant, we see that (−1269500)^2 - 4*801*501560475 = 4630488100 is greater than 0 and not a perfect square, so it is real and distinct, or choice B.

I hope that helps!

5 0
3 years ago
The given measurements may or may not determine a triangle. If not, then state that no triangle is formed. If a triangle is form
kolbaska11 [484]

h=(a)(sinC)=19(sin37)

That means h ≈11.43

Since c<h, There is no triangle

6 0
3 years ago
Read 2 more answers
How many fiths are in 1 whole
sattari [20]
Five fifths are in one whole. 
Don't believe me?
So you just do 1÷5
which is 5!
~JZ
Hope it helps you :)!
6 0
3 years ago
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