3 years ago

How do I solve this system using substitution: y = x + 4; y = 3x

Mathematics

2 answers:

Kisachek [45]3 years ago

8 0

Y = x + 4
y = 3x

3x = x + 4
- x - x 
2x = 4
2 2
x = 2
y = x + 4
y = 2 + 4
y = 6
(x, y) = (2, 6)

Olin [163]3 years ago

4 0

You just do
3x=x+4
subtract x from both sides
2x=4
divide 2 from both sides
x=2
y=2+4
y=6
(x,y)= (2,6)

You might be interested in

1. Sarah went to dinner, and the bill was $15.25. She left a 15% tip. How

mestny [16]

Answer:

$17.54

Step-by-step explanation:

15% percent of $15.25 is $2.29 so, add them together

3 0

3 years ago

Read 2 more answers

536 cm greater than or less than 53.6 dm

erastovalidia [21]

I think less than=)))

3 0

3 years ago

Read 2 more answers

Unit Test 4

o-na [289]

Answer:

C. 30

Step-by-step explanation:

circumference of the semicircular plot

$=\frac{1}{2}\times\pi d+d\\\\=\frac{1}{2}\times 3.14\times 35+ 35\\\\= \frac{1}{2}\times 109.9+35\\\\= 54.95+35\\\\= 89.95\\\\No. \: of\: poles= \frac{89.95}{3}\\\\= 29.98\\\\\approx 30$

3 0

3 years ago

const2013 [10]

35 x 0.14 = 4.9

The total tip would be $4.9

3 0

3 years ago

Read 2 more answers

Explain the different ways you can name an angle how can you determine if two triangles are similar

kogti [31]

Answer:

angle angle theorem.

Step-by-step explanation:

If you want to determine whether a few angles are similar you can use formulas such as SAS AAA ASA etc.

this means

side angle side

angle angle anlge

angle side angle

7 0

2 years ago