All categories

3 years ago

How many solutions does the following system have? 3x+2y=1 -9x-6y=3

2 answers:

6 0

3x + 2y = 1...multiply by 3
-9x - 6y = 3
--------------
9x + 6y = 3 (result of multiplying by 3)
-9x - 6y = 3
-------------add
0 = 6 (incorrect)

no solution...these r parallel lines that never intersect

guajiro [1.7K]3 years ago

3 0

Divide second equation by -3
3x+2y=1
other equatin is
3x+2y=1
since same equation, they are same line and lines are infinite so infinite solutions is answe

You might be interested in

Solve for x in each of the equations or inequalities below, and name the property and/or properties used:

nordsb [41]

Answer

a) 3/4 x = 9

x = $\dfrac{9\times 4}{3}$

x = 12

b) 10+ 3x = 5x

2 x = 10

x = 5

c) a + x = b

x = b - a

d) c x = d

x = $\dfrac{d}{c}$

e) $\dfrac{1}{2} x - g < m$

$\dfrac{1}{2} x< m + g$

x < 2( m + g)

f) q + 5 x = 7 x - r

q + r = 2 x

$x = \dfrac{q + r}{2}$

4 0

3 years ago

$90 with 25% off (SHOW WORK)

Ivahew [28]

Answer:

$22.5

Step-by-step explanation:

25% of $90

25% x 90

0.25 x 90

$22.5

4 0

2 years ago

Read 2 more answers

Victoria has $2.90 in quarters, dimes and nickels. The numbers of nickels is one more than six times the number of quarters, and

maria [59]

Answer:

Step-by-step explanation:

She has 290 cents.

Nickels: 6x+1

Quarters: x

Dimes: 4x

Now that we've converted it algebraically, we can add them

6x+1 + x + 4x = 11x+1 = 290

11x = 289

x = 289/11

let me know if incorrect, i will fix

8 0

2 years ago

I furniture sales person sells account for $1560 she receives a 2.75% commission on the sale of the cat how much did she earn on

horrorfan [7]

Just 1560x.0275

$42.90

5 0

3 years ago

Write a rule for each sequence. Find the next three terms.<br><br> 8,14,20,26

anastassius [24]

Aruthmetic sequene is
an=a1+(n-1)d
where d=common difference between terms
adds 6 every time
d=6
first term is 8
a1=8
8+6(n-1)
distribute
8+6n-6
8-6+6n
2+6n is answer

8 0

3 years ago