<span>Solve this by substitution:
</span>Solve 5x - 4y = -13 for x:<span><span><span><span>5x </span>− <span>4y </span></span>+ <span>4y </span></span>= -<span>13 + <span>4y </span></span></span>(Add 4y to both sides)
<span><span><u>5x </u></span>= <span><span><u>4y - </u><u>13 </u></span><u> </u> </span></span>(Divide both sides by 5)
5 5
<span>x = <span><span><span><u>4</u></span> y </span>+ -<span><u>13</u><span>
</span></span></span></span> 5 5
You can use https://www.mathpapa.com/algebra-calculator.html
5x - 4y = -13, 8x +10y = 12 (enter both equations with a comma between them and it will solve for you and show you step by step.
Answer:
This may take awhile, but I'm willing to do it for you!
Step-by-step explanation:
- C
- B
- D
- B (2, 1/2)
- C
- It was too badly formatted I couldn't depict what it was asking. Sorry.
- A
- B
- Can't see the graphs. Sorry.
- B
- Can't see graphs. Sorry.
- B
- D
- Can't see graphs. Sorry.
Very glad I was able to help!!
One way it's useful is in the application of phasors in physics. Phasors require you to add up vectors of two different angles, so the cosine angle addition formula can be used if you already know the cosine and sine of the original vector angles.
Answer:
1.00 and 1.73
Step-by-step explanation:
1) Calculating the 1st and the 2nd leg using trigonometric function sine:
Once one leg is found there is another way to find the other leg, using Pythagorean Theorem too.
Sides
a hypotenuse: 2.00
-------------------------------
b leg: 1.73
--------------------------------
c leg: 1.00
--------------------------------
