Answer:
see explanation
see explanationStep-by-step explanation:
21
Note that
(a - 
)²
= a² - 2 + 
= a² + - 2
= 11 - 2
= 9
Thus
(a - )² = 9 ( take the square root of both sides )
a - = 3
22
Since the expression is a perfect square, then
(4x + 5y)²
= 16x² + 40xy + 25y²
Comparing coefficients, then
a - 1 = 40 ( add 1 to both sides )
a = 41
23
99² - 87² ← is a difference of squares and factors as
= (99 - 87)(99 + 87)
= 12 × 186 = 1152, thus
24a = 1152 ( divide both sides by 24 )
a = 48
A triangle is an isosceles if two sides are equal, it’s an equilateral if all three sides are equal.
Answer:
Step-by-step explanation:
Well, one example would be
459620
Any digit from 1 to 9 can replace the 0 and leave a result of a 4 that is 10 times larger than the given 4.
Answer:
following. Write your answer as fraction in lowest terms. (f + g)(-5) = d. [4 pt.] ...
10 pages·
Step-by-step explanation:
marke me as brainst plz
Answer:
<h3>There is no slope and no y-intercept.</h3>
This is a line that is parallel to Y-axis
