Answer:
n = -4
Step-by-step explanation:
Step 1 :
Equation at the end of step 1 :
((6n - 2 • (4n + 7)) + 4) - -2 = 0
Step 2 :
Step 3 :
Pulling out like terms :
3.1 Pull out like factors :
-2n - 8 = -2 • (n + 4)
Equation at the end of step 3 :
-2 • (n + 4) = 0
Step 4 :
Equations which are never true :
4.1 Solve : -2 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation :
4.2 Solve : n+4 = 0
Subtract 4 from both sides of the equation :
n = -4
One solution was found :
n = -4
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plz mark me as brainliest if this helped :)
Your answer would be A.) False; either both are right or one is obtuse
Two acute angles added could never equal 180
Hope this helps!
Answer:
B = 160°
Step-by-step explanation:
This is how I solved it (I hope the explanation isn't too confusing):
Since L and K are parallel, I drew a straight line from A to B. By doing this, I'm making a triangle: ΔABC
Then I solved for the angles of the triangle. First, we are given that ∠C = 80° and ∠A = 120°. Although, when I drew the vertical line from A to B, it made a 90° (see attachment).
So what we basically did was break ∠A into two parts: an angle inside ΔABC and one outside. To find the interior angle, simply subtract 90° from 120° to get 30°.
There are 180° in a triangle, so add the two interior angles you know:
30° + 80° = 110°
Then subtract 110° from 180° to find the final interior angle which is:
180° - 110° = 70°.
To find the measure of angle B, you must add all of the parts together, so the 90° outside angle and the 70° interior angle:
90° + 70° = 160°
Step-by-step explanation:
The given sample space of S is = {ABC, ABD, ACD, BCD},
And from this sample space it can be deduced that;
(a) There can be four ways to choose the committee.
(b) There can be three ways in which person D is always included.
(c) And if persons B and C are necessarily be included, then there are two ways to form the committee.
