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lions [1.4K]
3 years ago
11

Complete the solution of the equation. find the value of y when x equals 10. 5x-y=54

Mathematics
2 answers:
Feliz [49]3 years ago
8 0
The answer is y=51/1x+-5
Snezhnost [94]3 years ago
8 0
To find the value of y, we must substitute x with 10 in the equation.
5x - y = 54
5(10) - y = 54

Simplify
50 - y = 54

Move 50 to the right side. After moving to other side, it becomes negative.
50 - y = 54
     - y = 54 - 50
     - y = 4
----------------------- divide both side by -1
       y = -4

The value of y is -4
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Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult tick
kirill115 [55]

Answer:

child's ticket =  4.75        adult ticket=10.75.

Step-by-step explanation:

The cost of an adult ticket is 6 more than that of a child ticket, so will be denoted by c+6. Now, we are told that the cost of four child tickets and two adult tickets is 40.50, so we can put this in an equation and solve for c:

(c+6)+(c+6)+c+c+c+c=40.50

6c+12=40.50

6c=28.50

c=4.75

Therefore the cost of a child's ticket (c) is 4.75 and the cost of an adult ticket (c+6) is 10.75.

4 0
3 years ago
Identify the variables in the graph describe how the variables are related
Alex17521 [72]
The time(h), would be the independent variable and the temperature(C) would be the dependent variable. 
3 0
4 years ago
Hi! Does any one know how to do proportions? If so can you please help me out with these 2 problems? please show work on how you
Nataly [62]
Answers:

1.) 18 lemons
2.) 80 minutes

Explanation:

Porportions are a lot like fractions. For the first question, you can make the fraction 6/8, or 3/4 simplified. This means that for every 8 cups of water, you need 6 lemons.

Then, to find the amount of lemons you need if you have 24 cups of water, you need to think about what×8= 24. If we divide 24 by 8, we get 3, so if we multiply our fraction by 3/3, we should get the answer.

If we do 6/8 × 3/3, we get 18/24. This means that we need 18 lemons if we were to use 24 cups of water.

For the next question, our fraction 15/60, for 15 cakes baked in 60 minutes. Now we need to divide 20 cakes by 15.

This question is a little different from the first one because there will be a decimal involved. If we do 20/15, we get 1⅓. This means that this time, we will multiply 15/60 by (1⅓)/(1⅓).

If we multiply 60 by 1⅓, we get 80, which is the number of minutes needed to bake 20 cakes.

Hope this helps :)
6 0
3 years ago
Suppose f varies inversely with g and that f = 28 when g = 2. What is the value of f when g = 7?
Lesechka [4]

Make up the proportion

28*2=x*7\\7x=56\\x=8

P.S. Hello from Russia

3 0
3 years ago
Read 2 more answers
Factorise fully <br>-14x - 8<br><br>ease do quick, will mark brainiest!​
OleMash [197]

Answer:

-2( 7x+4)

Step-by-step explanation:

-14x - 8

Factor out -2

-2*7x -2*4

-2( 7x+4)

5 0
4 years ago
Read 2 more answers
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