All categories

3 years ago

X-4y=16 5x+4y=8 Math math math

Mathematics

2 answers:

pychu [463]3 years ago

5 0

Answer:

(4,-3)

Step-by-step explanation:

x-4y=16

5x+4y=8

find x for one equation

x=4y+16

Now plug this into the other equation

5(4y+16)+4y=8

20y+80+4y=8

24y=-72

y=-3

x=4

Nina [5.8K]3 years ago

3 0

Answer:

y=-3

x=4

Step-by-step explanation:

You might be interested in

If the demand function for a commodity is given by the equation

Margarita [4]

Answer:

Equilibrium quantity = 26.92

Equilibrium price is $31.13

Step-by-step explanation:

Given :Demand function : $p^2 + 16q = 1400$

Supply function : $700 -p^2 + 10q = 0$

To Find : find the equilibrium quantity and equilibrium price.

Solution:

Demand function : $p^2 + 16q = 1400$ --A

Supply function : $p^2-10q=700$ ---B

Now to find the equilibrium quantity and equilibrium price.

Solve A and B

Subtract B from A

$p^2-10q -p^2-16q=700-1400$

$-26q=-700$

$26q=700$

$q=\frac{700}{26}$

$q=26.92$

So, equilibrium quantity = 26.92

Substitute the value of q in A

$p^2 + 16(26.92) = 1400$

$p^2 + 430.72 = 1400$

$p^2 = 1400- 430.72$

$p^2 = 969.28$

$p = \sqrt{969.28}$

$p = 31.13$

So, equilibrium price is $31.13

7 0

4 years ago

If ☆ x 2 = 0, then ☆ 8 will equal: 0 + 6 O + 8 0 x 2 O X4 0 x 8

soldier1979 [14.2K]

The last one I think

3 0

3 years ago

Save and

Darya [45]

Answer: 6/5

Step-by-step explanation:

7 0

3 years ago

Help me please!!! :(

Archy [21]

Answer:

There is no solution because the graphs do not intersect

Step-by-step explanation:

Both of theses equations do intersect with one another when graphed. In conclusion, there is no solution.

6 0

3 years ago

If 3(x – 2) = 2x + 6, the value of x is i will give you 35 points

Kryger [21]

3x - 6 = 2x + 6
3x = 2x + 6 + 6
3x = 2x + 12
3x - 2x = 12
x = 12

4 0

4 years ago