3 years ago

Solve by Substitution: 3x - y = 4 y = 6 - 2x

1 answer:

4 0

Substitute 6 - 2x for y in the first equation

3x - (6 - 2x) = 4

5x - 6 = 4

5x = 10

x = 2

Plug 5 for x in either equations (I'll use the second equation)

y = 6 - 2 * 2

y = 6 - 4

y = 2

(2,2) is the solution.

You might be interested in

Write an expression equivalent to 6 - 2x +5+ 4x that only has two terms

Leya [2.2K]

Answer:23

Step-by-step explanation:

8 0

3 years ago

A dealer marks his goods at 35% above the cost price and allows a discount of 20% on the marked price. Find his gain or loss per

vovikov84 [41]

Answer:

Step-by-step explanation:

100(1.35(0.8)p-p)/p=8%

Since this is positive the dealer makes an 8% profit.

6 0

3 years ago

Please help please :')

Alexandra [31]

___25%___50%___75%___100%__125%___150%

12.50___25___37.5___50__62.5__75

3 0

3 years ago

susan is driving to mount shasta .on her map she is a distance of 7 inches away .the scale of the map is 1/2 inch=50 miles.how f

DochEvi [55]

Answer:

700 miles

Step-by-step explanation:

Given:

Scale of the map is $\frac{1}{2}\textrm{ in}=50\textrm{ mi}$

∴ $1\textrm{ in}= \frac{50}{\frac{1}{2}}=50\times 2=100\textrm{ mi}$

Distance of Susan from mount Shasha on the map is 7 inch.

Therefore, Number of miles = $7\times 100=700\textrm{ mi}$

Hence, Susan must travel 700 miles to reach her destination.

6 0

3 years ago

5 + ( −3 ) ( 6x − 5 ) ?

arlik [135]

Answer:

=-18x+20

Step-by-step explanation

6 0

3 years ago