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ipn [44]
4 years ago
3

Which expression represents the distance between point (0, a) and point (a, 0) on a coordinate grid?

Mathematics
2 answers:
yanalaym [24]4 years ago
8 0

Answer:

A

Step-by-step explanation:

castortr0y [4]4 years ago
4 0

Answer:

\sqrt{2a^2}

Step-by-step explanation:

The distance between two points (x₁ , y₁) and (x₂ , y₂) is d

d= \sqrt{(x2-x1)^2+(y2-y1)^2}

For the given points (0, a) and (a, 0)

Substitute at the previous equation

d=\sqrt{(a-0)^2+(0-a)^2}=\sqrt{a^2+a^2}=\sqrt{2a^2} =a\sqrt{2}

So, the expression represents the distance between point (0, a) and point (a, 0) on a coordinate grid is <u>StartRoot 2 a squared EndRoot ⇒</u>\sqrt{2a^2}<u></u>

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Let ∠D be an acute angle such that sinD=0.19. Use a calculator to approximate the measure of ∠D to the nearest tenth of a degree
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Answer:

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Step-by-step explanation:

18+3930

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4 years ago
Luka buys a special pass to a fair for $7 that allows him to go on every ride for $1 each. How many rides will Luka need to ride
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Answer:

He would have to do 13 rides.

Step-by-step explanation:

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5 0
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Help asap plzz<br> -3x + 7 = -8
viva [34]

Answer:

x=5

Step-by-step explanation:

-3x+7=-8

Bring 7 to the other side, it becomes negative

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Hope it helps!

8 0
3 years ago
Read 2 more answers
Marshall left home biking at a constant rate of 20 mph. One hour later, it looked like it may rain, so his friend, brett, set ou
Lana71 [14]

Answer:

0.5

Step-by-step explanation:

First, we need to find how far ahead Marshall was.  Since he had been biking at 20 mph for one hour, he had gone 20 miles.

Next, we need to find how long it will take Brett to catch up to Marshall.  In order to do this, we need to find how much faster Brett is going than Marshall.  We do this by subtracting Marshall's speed from Brett's speed.

60 - 20 = 40.  So, Brett is catching up to Marshall at 40 mph.  Now, we figure out how long it will take for someone going 40 miles per hour to go 20 miles.  We find this by dividing 40 miles per hour by 20.  This is equal to 1/2 hour.  So, it will take Brett 0.5 hours to catch up to Marshall.  This is the same as A, so A is the correct answer.

We can check our answer by seeing how far Marshall and Brett will have gone.  Marshall will have been biking for 1.5 hours, so we multiply 20 * 1.5 = 30.  Marshall went 30 miles.

Brett drove for .5 hours at 60 mph, so he went 30 miles.  Since Brett and Marshall went the same distance, our answer is correct.

4 0
3 years ago
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