∡3 and ∡7 are corresponding angles, so m(∡3) = m(∡7) = 115°
∡7 and ∡5 are verically opposite angles, so m(∡7) = m(∡5) = 115°
The answer to the expansion of the expression, 3+5^2 is 28
<h3>How to expand an expansion</h3>
An expansion of an expression is the evaluation of the expression to its simplest form
Given:
3+5^2
= 3 + 5²
= 3 + (5 × 5)
= 3 + 25
= 28
Therefore, answer to the expansion of the expression, 3+5^2 is 28
Learn more about expansion:
brainly.com/question/13602562
Answer:
that would be 1
Step-by-step explanation:
i divided the 2 fractions and got 1
Answer:
None of these answers are correct.
Step-by-step explanation:
Perpendicular lines have opposite and reciprocal slopes, which means that we take the slope and we flip it. After we've done that, we change the sign.
Since the original slope is -7, first we flip it and get -1/7. Now we change the sign and get 1/7. Therefore, the perpendicular slope of this line would be 1/7
Xy = -900
x + y = 5
x + y = 5
x - x + y = -x + 5
y = -x + 5
xy = -900
x(-x + 5) = -900
x(-x) + x(5) = -900
-x² + 5x = -900
-x² + 5x + 900 = 0
-1(x²) - 1(-5x) - 1(-900) = 0
-1(x² - 5x - 900) = 0
-1 -1
x² - 5x - 900 = 0
x = -(-5) ± √((-5)² - 4(1)(-900))
2(1)
x = 5 ± √(25 + 3600)
2
x = 5 ± √(3625)
2
x = 5 ± 5√(145)
2
x = 2.5 ± 2.5√(145)
x + y = 5
2.5 ± 2.5 √(145) + y = 5
- (2.5 ± 2.5√(145) - (2.5 ± 2.5√(145)
y = 2.5 ± 2.5√(145)
(x, y) = (2.5 ± 2.5√(145), 2.5 ± 2.5√(145))
The two numbers that add up to 5 and multiply to -900 are 2.5 ± 2.5√(145).