Answer:
x = 52, y = 26
Step-by-step explanation:
x - 2y = 0
40 - y = 14
(40 - 40) - y = 14 - 40
- y = -26
y = 26
x - 2(26) = 0
x - 52 = 0
x (- 52 + 52) = 0 + 52
x = 52
85 = 10x+15
70 = 10x
x = 7
180-85 = 95 = z
Answer:
i think their were 17 do you have any answer choices
If you see this as <span>cos[2(3x)]
Then what we can do is </span>letting a = 3x to make it easier
Then it will be <span><span>cos2a
Hope this helps a lot</span></span>
Explanation:
Draw altitude AD to segment BC such that point D is on BC. This creates right triangles ADB and ADC.
Hypotenuses AB and AC are given as congruent. Leg AD in each triangle is congruent to itself by the reflexive property of congruence.
Then the triangles ADB and ADC are congruent by the HL congruence theorem.
Angles B and C are corresponding parts of congruent triangles, so are congruent by CPCTC.
