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hichkok12 [17]
3 years ago
6

What is the solution to the system of linear equations? {2x+4y=38

Mathematics
1 answer:
bija089 [108]3 years ago
6 0

2x+4y=38\\10x+3y=105\\\\-5(2x+4y = 38) => -10x-20y=-190\\\\-10x-20y=-190\\10x+3y=105\\\\-20y+3y=-190+105\\\\-17y=-85\\y=5\\\\2x + 4(5) = 38\\2x = 18\\x=9

x= 9

y= 5

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Lars is planning to purchase a home. He has been approved for a $420,000, 20-year mortgage with an APR of 5.125%.
Alenkasestr [34]

Answer:

Wow - you are asking a LOT of questions.  The Monthly Payment Formula is really tricky so I'll solve that for you.  

The time of the loan = 20 years * 12 = 240 months

We have to convert the annual rate to a monthly rate and that is done by:

monthly rate = 5.125 / 1,200 = 0.00427083333333333

Monthly pmt = 0.00427083333333333 + [0.00427083333333333 / (1.00427083333333333^240) -1 ] * 420,000

Monthly pmt = 0.00427083333333333 + [0.00427083333333333 / 2.7810190076 -1] * 420,000

Monthly pmt = (0.00427083333333333 +0.0023979718) * 420,000

Monthly pmt = 2,800.90

A calculator to double check is here: https://www.1728.org/calcloan.htm

Step-by-step explanation:

6 0
3 years ago
Conan O'Brien hosts the Conan show and Andy Richter, his sidekick, writes for it. Conan needs 4 hours to rehearse and host a goo
andrew-mc [135]

Answer:

C

Step-by-step explanation:

1. Conan needs 4 hours to rehearse and host a good show.  Andy needs 10 hours to do the same. So, Cohan needs 6 hours less than Andy to  rehearse and host a good show. This means Cohan has an absolute advantage in the production of show hosting.

2. Conan writes one usable joke in an hour,  Andy needs 2 hours to do the same. So, Cohan has an absolute advantage in the production of joke writing.

Thus, Cohan has an absolute advantage in the production of both show hosting and joke writing.

Correct option is option C.

4 0
3 years ago
Z^2 - x; use x = 1, and z = 3
elena55 [62]

Answer:

8

Step-by-step explanation:

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2 years ago
What is the volume of a rectangular sandbox that is 3 feet by 4 feet by 1 foot?
bixtya [17]

Answer:

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Step-by-step explanation:

welcome

8 0
3 years ago
Read 2 more answers
Water tank is being filled with water. Before water is pumped in, the water level in the tank is 12 inches high. After 20 minute
zhenek [66]

Answer:

D. H = 2.1t + 12

Step-by-step explanation:

Let us assume the t be the time in minutes

And h be the water level

Now before reaching to the equation that need to be used

before this, determine the inches per minute i.e.  

= 54 inches - 12 inches

= 42 inches in 20 minutes.

Now for per minute, it would be

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= 2.1 inches per minute

After this, multiply the inches per minute with the minutes t and add the sale to the beginning value i.e. 12

So the equation is

H = 2.1t + 12

hence, the last option is correct

7 0
3 years ago
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