Its 7xy/1y I understand it its pretty easy
Answer:
∠A is 30°
Step-by-step explanation:
Answer:
In alphabetic order:
x can be found with pythagorean theorem, since triangle ADC is right in D.

y and z are 7 times respectively the sine and cosine of angle ACB.

Finally,
can be calculated by determining the arc sine (or inverse sine) of the ratio CD over AC

The ages of Carl and Angela given from the expression is 25 years and 18 years respectively
<h3>Equation</h3>
- Angela's age = x
- Carl's age = x + 7
- sum of five times carl's age and four times angela's age is 197
5(x + 7) + 4x = 197
5x + 35 + 4x = 197
9x = 197 - 35
9x = 162
x = 162/9
x = 18
So,
Angela's age = x
= 18 years
Carl's age = x + 7
= 18 + 7
= 25 years
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The x-intercept is a point on the x-axis.
y=0 at every point on the x-axis.
-2x + 1/2(0) = 18
-2x = 18
Divide each side by -2 : x = -9