You earn a 90% on his science test you answer 18 questions correctly how many questions were on the test

Mathematics

2 answers:

Bogdan [553]2 years ago

8 0

Hello there!

The correct answer is 20.

Hope This Helps You!
Good Luck :)

gogolik [260]2 years ago

5 0

We can write a ratio equation 90/100 =18/x to show how many problems he got right on his science test.

We can cross multiply to simplify our equation to 90x=1800.

Now we divide by 90 on both sides to get x=20.

There were 20 questions on the science test, if you answered 18 questions correct, your test score would be a 90%.

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Aidan is participating in an 8 mile walk for his favorite charity. The organizers used a coordinate grid to plot the course. The

Travka [436]

Answer:

Aidan is 2 miles far from the ending point when he reaches the water station.

Step-by-step explanation:

The locations of the starting point, water station and ending point are (3, 1), (3, 7) and (3, 9), all expressed in miles. First we determine the distances between starting and ending points and between starting point and water station by the Pythagorean Theorem:

From starting point to ending point:

$D = \sqrt{(3-3)^{2}+(9-1)^{2}}$ (Eq. 1)