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prohojiy [21]
3 years ago
6

You earned 90% on a science quiz. You answered 27 questions correctly. How many questions were on the test?

Mathematics
1 answer:
Scilla [17]3 years ago
7 0

Answer:

There were 30 questions on the test.

Step-by-step explanation:

1. Set up your equation: 27/90 = y/100

2. Next you want to cross multiply: 2700 = 90y or 270 = 9y

3. Divide 270 by 9 to find your y: y = 30

There were 30 questions on the test.

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PYTHAGOREAN THEOREM IN 3D URGENT PLEASE PHOTO INSERTED
Andrews [41]

To find the length of the diagonal, we need to calculate the length of the base first and then use the value to calculate the diagonal since we are given the value of height of the triangle.

<h3>Pythagorean Theorem</h3>

This theorem is used to find the missing side of a right angle triangle given that we have the length of two sides.

To calculate the base of the triangle, let's use Pythagorean theorem here

x^2 = y^2 + z^2\\x^2 = 2^2 + 3^2\\x^2 = 4 + 9 \\x^2 = 13\\x = \sqrt{13} \\x = 3.61

Having the length of the base, let's consider the height of the triangle which is 6 and substitute the values.

d^2 = 6^2 + 3.61^2\\d^2 = 36 + 13.0321\\d^2 = 49.0321\\d = \sqrt{49.0321} \\d = 7.00

From the calculations above, the values of the triangle are

  • diagonal = 7
  • base = 3.61
  • height = 6

Learn more on pythagorean theorem here;

brainly.com/question/231802

#SPJ1

7 0
2 years ago
I think I got the answer but I need someone to help
GuDViN [60]
That’s a hard one for sure but I would say six
3 0
3 years ago
After travelling 2/5 of a Journey
Trava [24]

Answer:

= 100 km

Step-by-step explanation:

Total length = 5/5

Covered length = 2/5

Remaining length = 5/5 - 2/5 = 3/5

If 3/5 = 60 km

What about 5/5 = ?

= 5/5 x 60 x 5/3 (reciprical)

= 60 x 5/3

= 300/3

= 100 km

Covered distance = 100 - 60 = 40 km

6 0
3 years ago
Kevin can travel 22.50 miles in 0.3. What is his average speed in miles per hour?
weeeeeb [17]
His average speed will be 75 miles per hour. Hope it help!
7 0
3 years ago
20) Your goal is to earn at least $234.50 this week. If you earn $8.00 per hour plus a bonus amount of $130.50, how many hours d
NISA [10]

Answer:

13

Step-by-step explanation:

243.50 - 130.50 = 104

104 ÷ 8 = 13

6 0
3 years ago
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