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Hitman42 [59]
3 years ago
14

2x+y=3 x=3+y This is an equation of substitution and I need help

Mathematics
2 answers:
Aliun [14]3 years ago
7 0
2(3+y)+y=3
6+3y=3
Y=-1
Substitute to solve for x
X=3-1
X=2
laiz [17]3 years ago
7 0
Solution:(1,1)
replace the x if the first equation with the second equation then solve. Then take that solution and put it in for the y and solve.
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I can solve these for you

a:
-2+x=-x+2
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b:
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3 0
3 years ago
Given a required reserve ratio of 10 percent for all banks, total bank reserves of $400 billion could support maximum deposits o
serious [3.7K]

Answer:

The maximum deposit is $4,000 billion.

Step-by-step explanation:

Consider the provided information.

It is given that the required reserve ratio of 10 percent for all banks.

It is given that total bank reserves of $400 billion.

Let the maximum deposit is x.

Therefore, 10% of x = $400 billion

\frac{10}{100}\times x=\$400\text{ billion}

x=\frac{100}{10}\times \$400\text{ billion}

x=10\times \$400\text{ billion}

x=\$4000\text{ billion}

Hence, the maximum deposit is $4,000 billion.

8 0
3 years ago
Find the values for each function for x = 0,1,2,3, and 4. Analyze the pattern in the outputs to determine if the sequence is ari
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The area of a square floor on a scale drawing is 25 square centimeters, and the scale drawing is 1 centimeter:4 ft. What is the
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2 years ago
a math student is standing 40 feet from the base of a water tower. the angle of elevation from her horizontal line of sight is 7
Lerok [7]

9514 1404 393

Answer:

  128 ft

Step-by-step explanation:

The height of the tower above eye-height is related to the angle by ...

  Tan = Opposite/Adjacent

  tan(72°) = (tower height above eye height)/(40 ft)

  tower height above eye height = (40 ft)×tan(72°) = 123 ft

Since eye height is 5 ft, the total height of the tower from the ground is ...

  tower height = eye height + height above eye height

  tower height = 5 ft + 123 ft

  tower height = 128 ft

4 0
2 years ago
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