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DerKrebs [107]
3 years ago
13

Which equations represent functions?

Mathematics
1 answer:
never [62]3 years ago
4 0

Answer:

2x + 3y = 10,  3y = 18  (in both cases, for each input x, there is exactly one output y.

Step-by-step explanation:

3y = 10 - 2x, or y = (1/3)(10 - 2x)   Yes, this is a function.

4x = 16 → x = 4        NOT a Function, because for x = 4 there are an infinite number of possible y -values

2x - 3 = 14 →  2x = 17  →  x = 17/2  Not a function.  See reason given above.

3y = 18 →  y = 6   Function

2x = 14.6   →  x = 7.3  Not a function.  See reason given above

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Mr. Weaver has 36 history students. The ratio of girls to boys is 2:1. How many girls does he have in his class?​
mina [271]

Answer:

24 girls

Step-by-step explanation:

24:12

2:1

5 0
3 years ago
Zeke read z books over the summer. Michelle read twice as many books over the summer as Zeke. Tay read 3 more books over the sum
Vikki [24]

Answer: 4z + 3

Step-by-step explanation:

Number of books read by Zeke = z

Michelle read twice as many book as Zeke. This will be: = 2 × z = 2z

Tay read 3 more books than Zeke. This will be: = z + 3

The expression that represents the total number of books read over the summer by Zeke, Michelle and Tay would be the addition of the books read by each person. This will be:

= z + 2z + z + 3

= 4z + 3

6 0
3 years ago
Given cos C = cos N in triangle ABC and triangle LMN, select all of the true statements
vlada-n [284]
What are the statements to the equation
Tips to answer
-look up on google for any equation you may need
-if c=cos n in triangle abc find cos c (if that’s needed for the statements)
-look at all answers since they all could be true
~sorry I cannot help more with this~
3 0
3 years ago
Lee wanted to visit his grandmother who lives 1,400 air miles
77julia77 [94]

Answer:

Lee's flight would take 3.5 hours.

Step-by-step explanation:

1400 ÷ 400 = 3.5

4 0
2 years ago
It takes 198198198 seconds to boil a perfect egg at the lowest place possible, the edge of the Dead Sea, which has an altitude o
Juli2301 [7.4K]

Given that,

An egg takes 198 seconds to boil a perfect egg has an altitude of -418 m.

Also it takes 209 seconds at an altitude of 8848 m.

To find,

The domain of T.

Solution,

Domain is the set of input values for which the function is defined. The least value is -418 m and the highest value is 8848 m. So, the domain is :

-418\le x \le 8848

Therefore, this is the required solution.

3 0
3 years ago
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