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3 years ago

In 25 minutes, Jay can run 10 laps around the track. Write an equation to represent the relationship.

1 answer:

5 0

Hi there!

Remember that speed=distance/time
Let s be the speed in laps per minute
Therefore, we can say that s=10/25
We could also say that 25s=10, or 25=10/s
Hope this helps!

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What is 18% of 50? _90 _50 _36 _9 _18

FrozenT [24]

Answer:

Step-by-step explanation:

percentages are reversable. like instead of 18% of 50 you could reverse it and say what is 50% of 18. which is 9.

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3 years ago

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Rewrite the following equation in slope-intercept form. 17x – 7y = 19 I need help with this

Semenov [28]

Answer:

Step-by-step explanation:

17x – 7y = 19

17x – 19 = 7y

y = (17/7)x - 19/7

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2 years ago

Please help

ASHA 777 [7]

Answer:

(-6,4)

Step-by-step explanation:

The equations are:

$x^2+4y^2=100\\4y-x^2=-20$

Solving for x^2 of the 2nd equation and putting that in place of x^2 in the 2nd equation we have:

$4y-x^2=-20\\x^2=4y+20\\-------\\x^2+4y^2=100\\4y+20+4y^2=100$

Now we can solve for y:

$4y+20+4y^2=100\\4y^2+4y-80=0\\y^2+y-20=0\\(y+5)(y-4)=0\\y=4,-5$

So plugging in y = 4 into an equation and solving for x, we have:

$x^2=4y+20\\x=+-\sqrt{4y+20} \\x=+-\sqrt{4(4)+20} \\x=+-\sqrt{36} \\x=6,-6$

So y = 4 corresponds to x = 6 & x = -6

The pairs would be

(6,4) & (-6,4)

we see that (-6,4) falls in the 2nd quadrant, thus this is the solution we are looking for.

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3 years ago

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3 years ago

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Alika [10]

Answer: $x=52$

Step-by-step explanation:

$x-45+45=7+45\\x=52$

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2 years ago