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evablogger [386]
3 years ago
5

Solve the equation for y. 4.2x−1.4y=2.1

Mathematics
1 answer:
Vlada [557]3 years ago
7 0

Answer:

y=3x- 3/2

Step-by-step explanation:

4.2x−1.4y=2.1

Subtract 4.2x from each side

4.2x-4.2x−1.4y=-4.2x+2.1

-1.4y = -4.2x +2.1

divide each side by -1.4

-1.4y/-1.4y = -4.2x/ -1.4 +2.1/-1.4y

y=3x- 3/2

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Can someone please help me
Marrrta [24]

Based on the knowledge of <em>trigonometric</em> expressions and properties of <em>trigonometric</em> functions, the value of the <em>sine</em> function is equal to - √731 / 30.

<h3>How to find the value of a trigonometric function</h3>

Herein we must make use of <em>trigonometric</em> expressions and properties of <em>trigonometric</em> functions to find the right value. According to trigonometry, both cosine and sine are <em>negative</em> in the <em>third</em> quadrant. Thus, by using the <em>fundamental trigonometric</em> expression (sin² α + cos² α = 1) and substituting all known terms we find that:

\sin \theta = -\sqrt{1 - \cos^{2}\theta}

\sin \theta = - \sqrt{1 - \left(-\frac{13}{30} \right)^{2}}

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Based on the knowledge of <em>trigonometric</em> expressions and properties of <em>trigonometric</em> functions, the value of the <em>sine</em> function is equal to - √731 / 30.

To learn more on trigonometric functions: brainly.com/question/6904750

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7 0
2 years ago
Write an equation of a line with the given slope and y-intercept. m = –2, b = 4
Verdich [7]
Y= -2x+4 m represents the x value and b the y intercept
4 0
3 years ago
Read 2 more answers
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Step-by-step explanation:

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4 0
2 years ago
What is the hypotenuse of a right triangle?
Alex73 [517]
The hypotenuse^2 = leg1^2 + leg2^2
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6 0
2 years ago
The ratio of the side length of a square to the square's perimeter is always 1 to 4.
makvit [3.9K]

Answer:

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Step-by-step explanation:

Ratio is 1:4 (S:P).

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#:8, #=2. This is because 2/8 and 1/4 both = 0.25.

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Hope that helps

7 0
2 years ago
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