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astra-53 [7]
3 years ago
7

6c-9d=111 5c-9d=103how to solve this problem ​

Mathematics
2 answers:
Tema [17]3 years ago
7 0

Answer:

it is a simultaneous equation.

the -9d can be cancelled to find the answer

trapecia [35]3 years ago
4 0

Answer:

C=8 and d=-7

Step-by-step explanation:

first both equations are subtract we find the value of C and then putting the value of C in any equation then wo find value of d

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Find the slope of a line that is perpendicular to the line containing the points (–2, –1) and (2, –3). (1 point)
maw [93]
Didn't you already get this question right because it says 1/1 point?
8 0
4 years ago
How to find the real number solution of the equation x3+27x=9x2+27?
Alina [70]
Well think the answer is x = 14/9 but I don't think there is a full number for this equation.
3 0
3 years ago
What term can you add to 5/6x-4 to make it equivalent to 1/2x-4?
patriot [66]

\frac{-1}{3}x can be added to \frac{5}{6}x-4 to make it equivalent to \frac{1}{2}x-4.

Step-by-step explanation:

Let,

y be the term that can be added to given fraction.

Therefore;

(\frac{5}{6}x-4)+y=\frac{1}{2}x-4

Subtracting \frac{5}{6}x-4 from both sides to find y

(\frac{5}{6}x-4)-(\frac{5}{6}x-4)+y=\frac{1}{2}x-4-(\frac{5}{6}x-4)\\\\\frac{5}{6}x-4-\frac{5}{6}x+4+y=\frac{1}{2}x+4-\frac{5}{6}x+4\\\\y=\frac{1}{2}x-\frac{5}{6}x\\\\y=\frac{3-5}{6}x\\\\y=\frac{-2}{6}x\\\\y=\frac{-1}{3}x

\frac{-1}{3}x can be added to \frac{5}{6}x-4 to make it equivalent to \frac{1}{2}x-4.

Keywords: fraction, subtraction

Learn more about fractions at:

  • brainly.com/question/7153188
  • brainly.com/question/7151553

#LearnwithBrainly

6 0
4 years ago
Which is greater: 2 feet or 1 yard?<br> Explain.
Ivahew [28]

Answer:

1 yard

Step-by-step explanation:

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7 0
3 years ago
9 (x-y)^2-9 (x+y)(x-y)
bazaltina [42]
<h2>Answer</h2>

This answer is 18y • (y - 1)

<h2>Explanation</h2>

Step by step solution:

Equation at the end of step 1:

9 (x - y) ^2 - 9 (x^{2} - y^{2})

Equation at the end of step 2:

9 (x^2 + y^2 - 2xy) - 9 (x^2 - y^2)

Equation at the end of step 3:

9x^2 + 9y^2 - 18xy - 9x^2 + 9y^2

Equation at the end of step 4:

After performing basic +, - operation we get:

18y^2 - 18xy

Answer is: 18y. (y – x)


3 0
3 years ago
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