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IRINA_888 [86]
2 years ago
6

How do you solve -2(x + 3y) = 18

Mathematics
1 answer:
sergiy2304 [10]2 years ago
5 0

solving equation in terms of x we get x=-9-3y

solving equation in terms of y we get y=-3-1/3x

Step-by-step explanation:

We need to solve the equation: -2(x + 3y) = 18

Solving the equation:

-2(x + 3y) = 18\\-2x-6y=18

Simplifying and finding value of x:

-2x-6y=18\\-2x=18+6y\\-2x/-2=18/-2+6y/-2\\x=-9-3y

We can simplify and find value of y as well:

-2x-6y=18\\-6y=18+2x\\-6y/-6=18/-6+2x/-6\\y=-3-1/3x

So, solving equation in terms of x we get x=-9-3y

solving equation in terms of y we get y=-3-1/3x

Keywords: Solving Equations

Learn more about Solving Equations at:

  • brainly.com/question/1563227
  • brainly.com/question/2403985
  • brainly.com/question/11229113

#learnwithBrainly

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Which is not an equation of the line going through (3,-6) and (1, 2)?
Olegator [25]

Answer:

○ \displaystyle y - 1 = -4(x - 2)

Step-by-step explanation:

When you plug these coordinates into this equation, they will be confirmed as <em>false</em>.

I am joyous to assist you anytime.

3 0
3 years ago
Holly says 4.131131113... is a rational number. Which of the following best describes whether Holly is correct and why?? a.Holly
Leni [432]

Answer:

A. Holly is correct. Repeating decimals are always rational numbers.

Step-by-step explanation:

Rational number is the subset of:

  • Whole number (Positive integer + 0)
  • Natural number
  • Negative integers
  • Fractions
  • Decimals (Whether positive or not, whether terminating or non terminating)

Hope this helps ;) ❤❤❤

7 0
3 years ago
Read 2 more answers
What is the the area of a sector of a circle with a radius of 9 centimeters and formed by a central angle that measures 120
dem82 [27]

Answer:

27π cm²

Step-by-step explanation:

step 1

Find the area of the complete circle

The area of the circle is equal to

A=πr²

we have

r=9 cm

substitute

A=π(9)²=81π cm²

step 2

Remember that the area of complete circle subtends a central angle of 360°

so

using proportion

Find the area of a sector formed by a central angle that measures 120°

81π/360°=x/120°

x=120°*81π/360°

x=27π cm²

5 0
2 years ago
Consider the function g(x)=5x2−18x+35. find the area under the curve g(x) from x = 0 to x = 13 and then subtract from it the are
Black_prince [1.1K]
We integrate the given equation such that,

    integral of g(x) = (5/3)x³ - 9x² + 35x

Substituting,
   x = 13
    integral of g(x) = (5/3)(13³) - 9(13)² + 35(13) 
                  = 2595.67

and,   x = 0
   integral of g(x) = 0
  
 The area is 2595.67 - 0 = 2595.67

For the second part,
   x = 1
  integral of g(x) = (5/3)(1)³  - 9(1)² + 35(1)  
             = 27.67

Area under the curve between x = 0 and x = 1 is 27.67


The difference between the two areas is,
    2595.67 - 27.67 = 2568.0

Answer: 2568.0 units squared
8 0
2 years ago
Find the sum and express it in simplest form.<br><br> (-5y^3 - 7y) + (7y^3 + 8y +9)
Tema [17]
<span>(-5y^3 - 7y) + (7y^3 + 8y +9)
</span>

-5y^3+7y^3-7y+8y+9   <---- Group like terms
 
-5y^3+7y^3+y+9  <---- Add similar elements 

Answer: 2y^3+y+9

Read it carefully as it may look confusing with the symbols. 
6 0
2 years ago
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