3/4 + n = 1/2 help me pls

Solve the following system using substitution:
{y + 2.3 = 0.45 x
{-2 y = -3.6

In the second equation, look to solve for y:
{y + 2.3 = 0.45 x
{-2 y = -3.6

-3.6 = -18/5:
-2 y = -18/5

Divide both sides by -2:
{y + 2.3 = 0.45 x
{y = 9/5

Substitute y = 9/5 into the first equation:
{4.1 = 0.45 x
{y = 9/5

In the first equation, look to solve for x:
{4.1 = 0.45 x
{y = 9/5

4.1 = 41/10 and 0.45 x = (9 x)/20:
41/10 = (9 x)/20

41/10 = (9 x)/20 is equivalent to (9 x)/20 = 41/10:
{(9 x)/20 = 41/10
{y = 9/5
Multiply both sides by 20/9:
Answer: {x = 82/9
{y = 9/5

3 0

3 years ago

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Write an equation about having 6 puzzles, getting 5 more and having a lot now.

sattari [20]

6+5=11
or
6+5=?
It shows we originally have 6 and now have 5 more having a total of 11

8 0

4 years ago

If the purchase price for a house is $218,500, what is the monthly payment if you put 3.5% down for a 30 year loan with a

sashaice [31]

Answer:

218,500 - (3.5% down payment) =

210,852.50

30 years = 360 months

rate 6.5%

Use the loan payment formula (REALLY complex - see attached).

rate = 6.5/1,200 = 0.005416667

monthly payment = (rate + [rate / (((1 + rate)^months) -1)] * principal

monthly payment = (0.005416667 + [0.005416667 / (((1.005416667)^360)-1)] * principal

monthly payment = 0.005416667 + [(0.005416667 / 6.9917988084 -1)] * 210,852.50

monthly payment = 0.005416667 + [(0.005416667 / 5.9917988084)] * 210,852.50

monthly payment = (0.005416667 + 0.0009040135) * 210,852.50

monthly payment = 0.0063206805 * 210,852.50

monthly payment = 1,332.73

Answer is a.

3 0

3 years ago

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