<h3>Given</h3>
right triangle with side "a" = 12 and hypotenuse "c" = 15
<h3>Find</h3>
cos(∠A)
<h3>Solution</h3>
The Pythagorean theorem tells you
... b = √(c² - a²) = √(225 - 144) = √81 = 9
The definition of the cosine tells you
... cos(A) = b/c = 9/15
... cos(A) = 3/5 . . . . . . reduce the fraction
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<span>Question:
</span>------------------------------------<span>
3n - 7 + 2n = 8n + 11
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Combine like terms:
</span>------------------------------------<span>
5n - 7 = 8n + 11
</span>------------------------------------<span>
subtract 8n from both sides:
</span>------------------------------------<span>
-3n - 7 = 11
</span>------------------------------------<span>
Add 7 to both sides
</span>------------------------------------<span>
-3n = 18
</span>------------------------------------
Divide by -3 on both sides:
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n = -6
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Answer: n = -6
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Answer:
whats the question
Step-by-step explanation:
?
Answer:
2. y intercept is at 0 because it needs to go through the origin if it is proportional
3. y intercept is positive the line crosses above 0. when y intercept negative the line crosses below 0
4. y intercept is 0
5. y intercept is 1.8. it represents the time remaining as its starting timer.
6. (0, 1). y intercept is 1
7. y intercept is -4
8. y intercept is 0
9. 80m
Answer:
x = 1
Step-by-step explanation:
Given
5(2x - 8) + 15 = - 15 ( subtract 15 from both sides )
5(2x - 8) = - 30 ( divide both sides by 5 )
2x - 8 = - 6 ( add 8 to both sides )
2x = 2 ( divide both sides by 2 )
x = 1
