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ss7ja [257]
3 years ago
12

What is the first step in solving, 3x - 12y=5 3y -x=9, using the elimination method

Mathematics
1 answer:
mote1985 [20]3 years ago
3 0
3x-12y = 5
-x+3y = 9

First step is to make the coefficient of either x or y same.

3x-12y = 5
(-x+3y = 9)3

3x-12y = 5
-3x+9y = 27

-4y = 32
y = -8
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Please urgent fast thanks
stich3 [128]

Answer:

A) I = $171.73

B) $4771.73

Step-by-step explanation:

We are told her loan is $4600 for 7 months.

Thus;

Principal; P = 4600

Time; T = 7 months = 7/12 year

Interest rate is given as 6.4%

Thus; r = 6.4

A) To get the interest, the Formula is;

I = PRT/100

I = (4600 × 6.4 × (7/12))/100

I = $171.73

B) Since interest is $171.73, it means amount she owes after the 7 months = $4600 + $171.73 = $4771.73

6 0
3 years ago
7 + 5v − 0 + 2v − 1 = ______
Nuetrik [128]
7 + 5v - 0 + 2v - 1
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3 years ago
What is an equation for (0,1), (1,3), (2,9), (3,27), (4,81)
Gennadij [26K]

Answer:

y = 3^x

Step-by-step explanation:

Each y is 3 times the last one, so it's geometric, so exponential.  3 should appear as the base.

4 0
3 years ago
A car can travel 476 miles on 14 gallons of gas how many gallons of gas does this car need to travel 578 miles
mr_godi [17]
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3 years ago
Help me please this is due tommorow morning
nataly862011 [7]

Answer:

E: (2, -1)

F: (3, -1)

G: (3, -2)

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Step-by-step explanation:

Reflect all coordinates over an x-axis

Because you are reflection 180 degrees over the x axis, the y-axis is going to stay the same (because you are not moving the square left or right. When reflecting over axis always add the same amount you took away from the other side, if that makes any sense.

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