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qaws [65]
2 years ago
6

The system

Mathematics
1 answer:
hram777 [196]2 years ago
4 0
Solve by Equation

2 + 3y = 8 equation (1)
4x - y = 2 equation (2)

Equation (1) - (2)

2 - 4x + 3y - y = 8 - 2

-4x + 2y + 2 = 6

-4x + 2y + 2 -6 = 0

-4x + 2y -4 = 0

2y = 4x + 4

y = 2x + 2 equation (3)

In equation (1),

2 + 3(2x + 2) = 8

2 + 6x + 6 = 8

6x = 8 - 6 - 2

6x = 0

x = 0

In equation (2),

4(0) - y = 2

0 - y = 2

-y = 2

y = -2

Answer x = 0 and y = -2

By Sai Mont (Myanmar)
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Which number can each term of the equation be multiplied by to eliminate the fractions before solving?
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Answer:

would multiply everything by the common denominator of 4

-3/4m - 1/2 = 2 + 1/4m....multiply everything by 4 and u get :

-3m - 2 = 8 + m

that will get rid of the fractions....but u could multiply by -4 ...giving u :

3m + 2 = -8 - m

Step-by-step explanation:

7 0
2 years ago
A large high school offers AP Statistics and AP Calculus Among the seniors in this school 65% take AP Statistics, 45% take AP Ca
Igoryamba

Answer:

0.8

Step-by-step explanation:

P(AP statistics) = 65%

P(AP Calculus) = 45%

P(AP statistics n AP Calculus) = 30%

Probability of AP statistics or AP Calculus but not both :

Probability of event A or B :

P(AUB) = p(A) + p(B) - p(AnB)

P(AP statistics U AP Calculus) = P(AP statistics) + P(AP Calculus) - P(AP statistics n AP Calculus)

= 0.65 + 0.45 - 0.30

= 0.8

= 80%

4 0
2 years ago
(6x + 7) - (9x + 9) simpilest form pls
My name is Ann [436]

Answer:

-3x+16

Step-by-step explanation:

7 0
3 years ago
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Zolol [24]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Which is the most economic way to lessen electric consumption?
AysviL [449]

Answer:

1) c. Use only appliances to do the most important task in the house.

2) b. 112kwh

3) b. 111kwh

Step-by-step explanation:

Energy can be defined as the ability (capacity) to do work and it's measured in Joules. The various forms of energy are solar energy, chemical energy, thermal energy, wind energy, nuclear energy, electrical energy, etc.

Power can be defined as the energy required to do work per unit time.

Mathematically, it is given by the formula;

Power = \frac {Energy}{time}

Energy consumption is the total amount of power used by an electronic device per unit time and it's measured in Watt-hour or Kilowatt-hour.

Mathematically, it is given by the formula;

Energy = power * time

Generally, the most economic way to lessen electric consumption is by ensuring only the important electrical appliances are used at all times.

2. Given the following data;

Previous reading = 2156 KWh

Present reading = 2268 KWh

To find how many kilowatt-hour was consumed;

Energy consumption = present reading - previous reading

Energy consumption = 2268 - 2156

<em>Energy consumption = 112 KWh</em>

3. Given the following data;

Previous reading = 5512 KWh

Present reading = 5623 KWh

To find the electrical consumption of Falogme Family;

Electrical consumption = present reading - previous reading

Electrical consumption = 5623 - 5512

<em>Electrical consumption = 111 KWh</em>

6 0
2 years ago
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