Answer:
80°
Step-by-step explanation:
The sum of the marked angles is 145°, so we have ...
(4x+5)° +(6x -10)° = 145°
10x -5 = 145 . . . . . . . . . . divide by °, simplify
10x = 150 . . . . . . . . add 5
x = 15 . . . . . . . . divide by 10
Then the measure of angle XMN is ..
angle XMN = (6x -10)° = (6(15) -10)° = 80°
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<em>Check</em>
angle ZMX = (4(15)+5)° = 65°
and 65° +80° = 145° . . . . as required
Combine like terms
2a² + 6a² = 8a²
8a² - 5
Minus 4x^2 both sides
25y^2=100-4x^2
divide both sides by 25
y^2=4-4x^2/25
Answer: he bought 5 binders in total (sry if it’s wrong)
Step-by-step explanation: