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Karo-lina-s [1.5K]
3 years ago
12

Determine if the following graphs are functions

Mathematics
2 answers:
dmitriy555 [2]3 years ago
5 0
The first and the last ones are tge only functions
Setler [38]3 years ago
3 0

Answer:

yes, no, no, yes

Step-by-step explanation:

i am on this test so please let me know if i am wrong :)

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for a trip, one high school rented and filled 2 vans and 8 buses with 176 students.another high school instead fit its 164 stude
vodka [1.7K]

Answer:

A bus carries 20 students while the van carries 8 students

Step-by-step explanation:

Let's assume that the number of students that the bus can carry is X And

The number of students that the van can very be y

From first statement,

8x + 2y = 176______ first equation

From Second statement,

7x + 3y = 164______ second equation

The above is a simultaneous equation and we will use the elimination method to solve for both x and y

But if we take a look at both equations,we will find out that we can't make use of the elimination method since the coefficients of both x and y aren't same in both equations.

What we have to do now is to multiply equation 1 by 3 and multiply equation 2 by 2 so as to get the coefficients of y in both equation to be the same.

Initially, both equation are

8x + 2y = 176____ first equation

7x + 3y = 164____ second equation

They will now be :

24x + 6y = 528(was multiplied by 3)

14x + 6y = 328(was multiplied by 2)

Now subtract equation 2 from 1 and we have

10x = 200

X = 20

Now substitute x = 20 in equation 1 above

8x + 2y = 176

(8 × 20) + 2y = 176

2y = 176 - 160

Y = 8

Remember that we assumed that the number of students that each bus carried was x and van was y,now we know the values of c and y to be 20 and 8 respectively.

Therefore, each bus carried 20 students and each van had 8 students on it

8 0
3 years ago
Read 2 more answers
A skydiver accelerates downward at 8m/s^2 during the first second. Her weight is -540 N. The net force on the skydiver is -290 N
nikdorinn [45]

Answer:

formula of force in mass*acceleration

Step-by-step explanation:

7 0
2 years ago
Leo is ordering more cannery see you before the pet store if there canneries eat four bags of seed in a month how many bags the
olga55 [171]
So you would do 4 times 12 which gets you 48 which is your answer because they went through 4 bags in 1 month and you want to find how many bags they went through so the equation would be 4times 12 or 12 times 4
5 0
3 years ago
seven friends go to the store and each wants a drink if each drink costs $2 how much was the total bill
White raven [17]

Answer:

7 friends multiply $2

Its product is: $14

Step-by-step explanation:

5 0
3 years ago
The ration of red marbles to white ones is 13 to 12. If there are 3,081 red marbles how many white ones are there?
Black_prince [1.1K]

Answer:

2844

Step-by-step explanation:

13 is to 12 as 3081 is to x. 13/12 = 3081/x. 12 * 3081 = 13x.

36972 = 13x. divide both sides by 13, you're left with 2844.

7 0
3 years ago
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