2 years ago

What are three ratios that are equivalent to 12:18

Mathematics

1 answer:

kari74 [83]2 years ago

4 0

Answer:

6:9, 4:6, 24:36

Step-by-step explanation:

To get these, you can divide both numbers by the same number or multiply

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What is the greatest common factor and least common multiple of 45 75 and 90?

Ghella [55]

15 and 450 because you divide and multiply until you get the same number

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3 years ago

One side of a triangle is two times the second side. The third side is 5 feet longer than the second side. The perimeter of a tr

Sphinxa [80]

Second side= x
First side = 2x
Third side = x+5
x+2x+x+5=49
4x=44
x=11

1st side= 22
2nd side = 11
3rd side = 16

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2 years ago

43 people are going to a club. A taxi can carry 7 people how many takis do they need?

irina1246 [14]

Answer:

They need 7 taxis

Step-by-step explanation:

43/7 is 6.14, and since their cant be .14 f a person you have to round up

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3 years ago

X + 8 < 10<br><br> Please help

taurus [48]

In this question, you're solving the inequality by solving for x.

Solve for x:

x + 8 < 10

<em>subtract 8 from both sides</em>

x < 2

Answer:

x < 2

8 0

3 years ago

Two Physics classes at Jefferson High School took the same quiz. Mr. Spears had 20 students in his class with a mean score of 80

andriy [413]

Answer:

The mean score for all students on the quiz was 86.

Step-by-step explanation:

This question is solved by a weighed average.

To find the weighed average, we add the values multiplied by their weight, and after that we divide by the sum of weights.

In this problem, we have that:

Mr. Spears had 20 students in his class with a mean score of 80.

So 80 has a weight of 20.

Mrs. Guyton's class of 30 students had a mean score of 90.

So 90 has a weight of 30.

Overall, what was the mean score for all students on the quiz

$M = \frac{80*20 + 90*30}{20 + 30} = 86$

The mean score for all students on the quiz was 86.

4 0

3 years ago