The answer is
B, C, and D
The angles are B and C.
The three angles add up to 180º
A=80º
B
C
A+B+C=180º
80º+B+C=180º
B+C=180º-80º
B+C=100º (1)
The ratio between A and B is 7/13 ; therefore:
B/C=7/13 ⇒B=7C/13 (2)
With the equations (1) and (2), we make a system of equations:
B+C=100
B=7C/13
We can solve this system of equations by substitution method:
7C/13 + C=100
least common multiple=13
7C+13C=1300
20C=1300
C=1300/20
C=65
B=7C/13
B=7*65/13
B=455/13
B=35º
Answer: The measures of those two angles are 65º and 35º.
Is about the same as the posting you had before.
bear in mind that in an exponential equation the initial amount is usually the one outside the parentheses, the one that doesn't have an exponent
128(0.50)ˣ, that'd be 128.
<span>Given:
r
= 3 sin 2θ</span>
<span>
Find:</span>
Graph
that matches the polar equation
<span>Solution:
Use the polar graph type in the graphing calculator and enter the following
values: 3sin (2 theta).</span>
<span>Please
see the attached image for the answer. The graph would look like butterfly
wings.</span>