All categories

2 years ago

What’s the solution of x+y=29 and y=4x-11

Mathematics

1 answer:

tia_tia [17]2 years ago

6 0

Answer:

x = 8

y = 21

Step-by-step explanation:

y = 4x − 11

x + y = 29

Solve for x:

x + y = 29

x + 4x − 11 = 29

5x − 11 = 29

5x = 40

x = 8

Solve for y:

y = 4x − 11

y = 4 × 8 − 11

y = 21

You might be interested in

When placed end to end, three red rods are 2 cm longer than than 2 blue rods. Three blue rods are 2 cm longer than four red rods

Oxana [17]

Answer:

Red = 10 cm, blue = 14 cm

Step-by-step explanation:

Let the length of each red rod be r and each blue rod be b

Then we have:

3r - 2b = 2
3b - 4r = 2

Multiply the first equation by 3 and the second one by 2:

9r - 6b = 6
6b - 8r = 4

Add the equations to eliminate one of variables:

9r - 8r = 6 + 4
r = 10 cm

Find the value of b:

3*10 -2b = 2
30 - 2 = 2b
2b = 28
b = 14 cm

5 0

3 years ago

Please round any decimal points to one decimal place!

Akimi4 [234]

Answer:

1) 7.9

2) 5.2

3) 20.3

4) 27.9

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

The polynomial function g(x) = 2x4 - 9x3 - 12x2 + 29x + 30 has

Nataliya [291]

Answer:

the answer is

Step-by-step explanation:

the answer is

6 0

3 years ago

15:45 in simplest form

mylen [45]

15:45 in simplest form is 1:3

the LCM of 15 and 45 is 15, and when you divide both by 15, you get 1:3

7 0

3 years ago

What are the variables in the expression x+8-y?

maksim [4K]

x and y i think, I haven't done that in a long time.

4 0

3 years ago

Read 2 more answers