5x+3y=39
x+y=3
*ELIMINATION METHOD *
Answers
x+y=3
we will eliminate the y terms first
multiply bottom equation by -3
-3x-3y=-9
add this to the first equation
5x-3x+3y-3y=39-9
2x+0=30
divide both sdies by 2
x=15
subsitute into second equation
x+y=3
15+y=3
subtract 15 from both sdies
y=-12
x=15
y=-12
Related Questions
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on january 1,1999,the price of gasoline was$1.39 per gallon .if the price of gasoline increased by 0.5%per month ,what was the was the cost of one gallon of gasoline,to the nearest cent,on january 1 one year later?
Evaluate the expression: -6 - |3 - 7| × 4 ÷ 8 - (-2) =
Helppppppppppppppppppppppppp
Answers
The perimeter of an office whose floor area is 225 square units is 60 units
Further Explanation
Area
- Area is a measure of how much space is occupied by a given shape.
- Area of a substance is determined by the type of shape in question.
For example;
- Area of a rectangle is given by; Length multiplied by width
- Area of a triangle = 1/2 x base x height
- Area of a circle = πr². where r is the radius of a circle,
- Area of a square = S², Where s is the side of the square.etc.
Perimeter
- Perimeter is defined as the distance along a two dimension shape. Perimeter of different shapes is given by different formulas
For example;
- The perimeter of a rectangle = 2(length+width)
- The perimeter of a triangle = a+b+c; where a, b and c are the sides of the triangle. etc.
In this case;
We are given the area of a square as 225 square units
Therefore; since the area of a square is given as s², where s is the side of the square.
Then; s² = 225
s = √ 225
= 15 units
But Perimeter of a square is given by; 4 × s
Thus; Perimeter = 4 × 15 units
= 60 units
Keywords; Perimeter, Area
Learn more about;
- Perimeter of a square example: brainly.com/question/3619302
- Area of a square: brainly.com/question/7511709
Level: Middle school
Subject; Mathematics
Topic: Area and Perimeter
A = 255
A = a^2
255 = a^2 |sqrt
15 = a
P = 4a
P = 4*15 = 60
Answers
Answer:
-35/8
Step-by-step explanation:
−1 1/2−(3 1/2)−(−5/8)
Convert all fractions into improper fractions:
- 3/2 - (7/2) - (-5/8)
Make all denominators:
-12/8 - () - (-5/8)
-12/8 - () + 5/8
-35/8
How much does he earn for each car sold?
A) $0
B) $1,000
C) $2,000
D) $3,000
Answers
The answer is 2,000.
The variable x is how many cars he sold. In this one.
Now the equation is this: 2000 + 1000(1)
Now solve.
2000 = 1000(1) = 2000 + 1000 = 3000
So our car salesman would have made $3,000 in a month.
Answers
So it could be 91 + 20, 68 + 43, 45 + 66, 75 + 36, etc.
Final answer:
The four equivalent expressions for 90 + 21 can be represented as separate sums, number line jumps, or real world problems, all of which equal 111.
Explanation:
The student has asked for four equivalent expressions for 90 + 21. Here are four possible representations:
- Adding the subsequent numbers in a sequence where the numbers are 90 and 21, which simplifies to 111.
- Calculating the total value of two separate groups, one of 90 and another of 21, which when combined gives 111.
- A number line representation where one starts at position zero and makes two jumps, one of 90 units and a second jump of 21 units, which lands at 111.
- A real-world problem where one has 90 of something and is given 21 more, resulting in a total of 111.
Learn more about Math here:
#SPJ3
Answers
Answers
Answer:
Really I mean just ugh really 3 gallons is by far the biggest
Step-by-step explanation:
16 cups are one gallon
3 fluid ounces is 0.37 cups
Please for the love of God actually learn this don't just cheat your way to an A
Oh and a teaching lesson
8 fluid ounces is rounded up to a cup
2 cups make a pint
2 pints make a quart
2 quarts make half a gallon
2 half gallons make a gallon