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3 years ago

What is the value of x in the equation 3 x minus 4 y equals 65, when y equals 4?

Mathematics

2 answers:

Murrr4er [49]3 years ago

6 0

Answer:

x = 27

Step-by-step explanation:

Given

3x - 4y = 65 ← substitute y = 4 into the equation

3x - 4(4) = 65

3x - 16 = 65 (add 16 to both sides )

3x = 81 ( divide both sides by 3 )

x = 27

Andrei [34K]3 years ago

5 0

Answer:

X=27

Step-by-step explanation:

Finished the assignment

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Read 2 more answers

Two supplementary angles are in the ratio of 31:5 find angles

ad-work [718]

Answer:

The angles are 155° and 25°.

Step-by-step explanation:

Given:

Two supplementary angles are in the ratio of 31:5.

Now, to find the angles.

The sum of two supplementary angles = 180°

Let the ratio of the angles be $31x\ and\ 5x$ .

So, according to question:

$31x+5x=180\°$

$36x=180\°$

Dividing both sides by 36 we get:

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7 0

2 years ago

What is the side length a in the triangle below?

grigory [225]

Answer:

a=5

Step-by-step explanation:

a^2+b^2=c^2

c^2-b^2=a^2

13^2-12^2=a^2

169-144=a^2

25=a^2

5=a

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