The required value of is m∠2 = 18°.
Given that,
First complementary adjacent angel m∠1 = 72°
We have to find,
Second complementary adjacent angle m∠2.
According to the question,
In geometry, the two angles are said to be complementary angles if they add up to 90 degrees.
Such as, m∠1 + m∠2 = 90°.
Where, m∠1 = 72°
Putting the value of m∠1 = 72° in the equation,
72° + m∠2 = 90°
m∠2 = 90° - 72°
m∠2 = 18°
Hence, The required value of is m∠2 = 18°.
For more information about Complementary adjacent angles click the link given below.
brainly.com/question/24502946
Hi there! The answer is A.
(2x² + 3x - 10) - (x² - x + 111)
Let's solve this problem step by step!
First work out the parenthesis. Because we multiply by negative 1, we mustn't forget to change the symbols in front of the factors.
2x² + 3x - 10 - x² + x - 111
Now rearrange our expression, in order to collect the terms later.
2x² - x² + x + 3x - 10 - 111
And finally collect the terms.
x² + 4x -121
The answer is A.
~ Hope this helps you!
Answer:
True
Step-by-step explanation:
First statement
[a b c | d][x]
[a b c]x=d
ax+bx+cx=d
Second statement
Ax=d
Given that A = [a b c]
[a b c]x=d
ax+bx+cx=d
ax+bx+cx=d
Then, they are going to have the same solutions
x is the number of adults and y is the number of children.
x + y = 12
<span>14x + 10y = 140
lets multiply the first equation by -10 and then add it to the second equation:
-10x - 10y = -120
</span>14x + 10y = <span>140
</span>-----------------------
4x + 0 = 20
x = 20/4
x = 5
then substitute in the original equation:
x + y = <span>12
</span>5 + y = <span>12
</span>y = 12 - 5
y = 7
therefore there were 5 adults and 7 children
