Answer:
d
Step-by-step explanation:
Answer:
Step-by-step explanation:
Sum of angle in a triangle = 180°
<A+<B+<C = 180
Given <B = 50°
Substituting into the formula
<A+50+<C = 180
<A+<C = 180-50
<A+<C = 130°
Since the ∆ABC is an acute triangle, the angles <A and <C must be angles less than 90° since acute angles are angles less than 90°
The possible values of <A and <C that will be acute and give a sum of 130° are;
∠A= 58° and ∠C= 72°
∠A= 80° and ∠C= 50°
∠A= 60° and ∠C= 70°
You can see that all the Angles are less than 90° and their sum is 130°
![4x^2-100=0 \ \ \ \ \ \ |+100 \\ 4x^2=100 \ \ \ \ \ \ \ \ \ \ \ |\div 4 \\ x^2=25 \\ x=\pm \sqrt{25} \\ x=\pm 5 \\ x=-5 \hbox{ or } x=5](https://tex.z-dn.net/?f=4x%5E2-100%3D0%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%7C%2B100%20%5C%5C%0A4x%5E2%3D100%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%20%7C%5Cdiv%204%20%5C%5C%0Ax%5E2%3D25%20%5C%5C%0Ax%3D%5Cpm%20%5Csqrt%7B25%7D%20%5C%5C%0Ax%3D%5Cpm%205%20%5C%5C%0Ax%3D-5%20%5Chbox%7B%20or%20%7D%20x%3D5)
The answer is (3) -5 and 5.
Answer:
15
Step-by-step explanation:
10 is 5 less than fifteen.
Sorry if its wrong
Answer:
x=−3 and y=5
Step-by-step explanation: