Step-by-step explanation:
law of cosine :
c² = a² + b² - 2ab×cos(C)
with c being the side opposite of C.
so, in our case
3² = 3² + 3²×3 - 2×3×3×sqrt(3)×cos(A)
0 = 3²×3 - 18×sqrt(3)×cos(A)
27 = 18×sqrt(3)×cos(A)
cos(A) = 27/(18×sqrt(3)) = 3/(2×sqrt(3)) =
= 0.866025404...
A = 30°
FYI : since it is an isoceles triangle, C = A = 30°.
and therefore B = 180 - 30 - 30 = 120°.
as the sum of all angles in a triangle is always 180°.
The conclusions that can be drawn about f–1(x) are:
has an x-intercept of (-36, 0)- has a range of all real numbers.
<h3>Calculations and Parameters:</h3>
Given:
To find x, we would multiply both sides by -2/3
= 
Therefore, has an x-intercept of (-36, 0)
Furthermore, has a range of all real numbers.
Read more about real numbers here:
brainly.com/question/17020343
#SPJ1
In order to solve the problem what you must do is 5- .99 to get 5.01
Answer:
The only possible answer that is correct is the first one, x = -4.
Step-by-step explanation:
Simplify the given inequality as much as possible, and then substitute each of the given x values one by one to determine which is in the solution set.
9(2x + 1) < 9x - 18 becomes 18x + 9 < 9x - 18, which, if reduced by dividing all four terms by 9, becomes 2x + 1 < x - 2.
Simplifying further, we get x < - 3. The only possible answer that is correct is the first one, x = -4. -4 < -3 is true.
The answer is 1561 yuans and 27 jiao.
