1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ivann1987 [24]
3 years ago
8

Please explain how you got the answer, i dont understand the subject

Mathematics
1 answer:
KIM [24]3 years ago
5 0

Answer:

y=mx+c

We have to find the value of m and c.

Let's substitute the value of x and y from the table.

When x=1, y=15,

15= m(1)+c

m +c= 15 ------(1)

Now substitute another set of x and y values.

When x=2, y=24,

24= m(2)+c

2m +c= 24

c= 24 -2m ------(2)

Let me rewrite the two equations so that it is clearer for you to see.

m + c= 15 -----(1)

c = 24 -2m -----(2)

subst. (2) into (1):

m+ 24-2m= 15

-m= 15-24 (bring constants to 1 side, m terms to the other)

-m= -9 (simplify)

m= 9 ( divide by -1 throughout)

subst. m=9 into (2):

c= 24 -2(9)

c= 24-18

c= 6

Thus, the equation is y=9x+6.

When the cat is 3 years old, x=3.

When x=3,

y= 9(3)+6

y= 33.

Hence, the cat is 33 years old in human years.

You might be interested in
Which of the following statements must be true in order for the line represented by the equation y = mx + b to have a negative x
nekit [7.7K]
<span>The signs of the values of m and b<span> are the same.</span></span>
6 0
2 years ago
The price of a tv was decreased by 20% to £1440. What was the price before the decrease?
grigory [225]

Answer:

€7200

Step-by-step explanation:

20%---------1440

100%----------y

y= 100×1440/20

y= 144000/20

y= €7200

price before decrease= €7200

7 0
2 years ago
What one is it? help pls
MrMuchimi

Answer:

(-2, 0)

Step-by-step explanation:

the y-intercept is (-2, 0), therefore that the solution.

5 0
3 years ago
Write two subtraction equations to show how to find 15 - 7
pantera1 [17]
15-7=8         
i hope it helps
5 0
3 years ago
Read 2 more answers
Y’all help w this pls asap
patriot [66]

Answer:

x = 37

Joe Mama said to use to pythagorus theorem. Then u can sing super idol

8 0
2 years ago
Read 2 more answers
Other questions:
  • Which ratio is equal to 6/15?
    7·2 answers
  • X^3 = 216 (Solve for x)
    6·1 answer
  • Randy is flying a kite in which the length of the line to the kite is 88 feet long. If the height measurement shown of the kite
    8·2 answers
  • What is the length of leg s of the triangle below
    13·2 answers
  • a cleaning compony charges 125$ To visit a home. and 40$ to clean each room if the total bill was $365 how many rooms were clean
    11·1 answer
  • Y = x - 5 <br> x + y = -1
    5·1 answer
  • A car is driving down a long Steep Hill the elevation above sea level in feet of the car when it is D miles from the top of the
    5·1 answer
  • Sarah will take 8 algebra tests. On the first 7, Sarah's scores were 79, 86, 92, 89, 87, 80, and 82. What will Sarah need to sco
    6·1 answer
  • .........help...............
    8·2 answers
  • Help me please i need the lenght of yz . . . . . . . . . .. . . . . . .
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!