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UkoKoshka [18]
3 years ago
5

Find the value of both variables.

Mathematics
1 answer:
ella [17]3 years ago
8 0

\cos(45)  =  \frac{5 \sqrt{2} }{x}  \\  \frac{1}{ \sqrt{2} }  =  \frac{5 \sqrt{2} }{x}  \\ x = 10 \\  \\  \tan(45)  =  \frac{y}{5 \sqrt{2} }  \\ 1 =  \frac{y}{5 \sqrt{2} } \\ y = 5 \sqrt{2}

I hope I helped you ^_^

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Dicriminant of x² – 49 = 0
Mama L [17]

Answer:

196

Step-by-step explanation:

The discriminant (Δ) is given by:

\Delta = b^2-4ac

Where the polynomial is in the form:

ax^2+bx+c=0

In this problem, a = 1, b = 0, and c = -49. Thus, plugging it into the formula:

\Delta = 0^2-4(1)(-49) = -(-196) = 196

Thus, the discriminant of x² – 49 = 0 is 196.

6 0
3 years ago
Please answer with explanation, I don't understand.<br><br> <img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%5E2-14x%2B49%7D%20%3Dx
Crank

Answer: x ≥ 7

Step-by-step explanation:

You have to square both sides of the equation. You can manipulate an equation or function any way imaginable as long as it is done equally and helps the problem become easier. If we square this, the radical will cancel and we will get two trinomials equal to each other.

x^2-14x+49=(x-7)^2\\x^2-14x+49=x^2-14x+49

We can see the two expressions are exactly equal to each other. All real numbers are solutions, besides a few. These few are when the radical is equal to a negative number. So lets set up an inequality stating that the radical must be greater than or equal to 0.

x^2-14x+49\geq 0\\(x-7)^2 \geq 0\\x \geq 7

6 0
3 years ago
Select the correct answer.
kherson [118]

Answer:

d.2/6 has a repeating decimal form

3 0
3 years ago
HELP PLEASE I honestly need help please help
eduard

9514 1404 393

Answer:

  5.  x = 160; y = 20

  6.  h = 125°; g = i = 55°

Step-by-step explanation:

Vertical angles are found on opposite sides of a point where lines cross. Each angle is formed from rays opposite those of the other angle. Vertical angles are congruent.

5. x° and 160° are vertical angles: x° = 160°

  y° and 20° are vertical angles: y° = 20°

__

6. h° and 125° are vertical angles: h° = 125°

The angles g° and 125° form a "linear pair" so total 180°.

  g° = 180° -125° = 55°

  g° and i° are vertical angles: g° = i° = 55°

4 0
3 years ago
sunscreen is priced at $10 per bottle plus 8% tax if Tanya purchases a bottle of sunscreen with a $20 bill then what is her chan
alina1380 [7]

$9.20

10*1.08 is 10.80. 20 - 10.80 is 9.20.

3 0
3 years ago
Read 2 more answers
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