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Virty [35]
3 years ago
12

Please help, show work!!! :))

Mathematics
1 answer:
otez555 [7]3 years ago
4 0
25.59- 9.99= 15.60
15.60/ 0.05 = 312
312 minutes this month
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Given tan θ = 2 and sin θ < 0. Find cos(θ +pi/4)
Lera25 [3.4K]

Answer:

√10 / 10

Step-by-step explanation:

tan θ > 0 and sin θ < 0, so θ is in quadrant III.  That means cos θ < 0.

cos(θ + π/4)

Use angle sum formula.

cos θ cos(π/4) − sin θ sin(π/4)

½√2 cos θ − ½√2 sin θ

Factor.

½√2 cos θ (1 − tan θ)

½√2 cos θ (1 − 2)

-½√2 cos θ

Write in terms of secant.

-½√2 / sec θ

Use Pythagorean identity (remember that cos θ < 0).

-½√2 / -√(1 + tan²θ)

-½√2 / -√(1 + 2²)

½√2 / √5

√10 / 10

5 0
3 years ago
6x - 5 = 5x + 3<br> If you get it right you get brainest
matrenka [14]

Answer:

x = 8

Step-by-step explanation:

6x - 5 = 5x + 3

6x - 5x = 3 + 5 (combining like-terms)

x = 8

Hope this helps!

4 0
3 years ago
Compare the slopes of parallel lines and perpendicular lines?​
Gnesinka [82]

Answer: C

Step-by-step explanation: l-7&!:

4 0
3 years ago
I NEED HELP (GONE WRONG) (NOT CLICKBAIT)
const2013 [10]

Answer:

Overhand Throw

Step-by-step explanation:

The ball is thrown over the shoulder so it is considered an overhand throw. Plus they only use an underhand and sidearm in baseball.

3 0
3 years ago
Read 2 more answers
Suppose you inherited a house that was purchased in 1950 for 20,000. It is now 2015 and the value of the house has increased by
Masja [62]

Answer:

I think the house would now costs $85,000

Step-by-step explanation:

First, I multiplied by how many years between 1950 to 2015 and 5 to get 325.

Next, I divided 20,000 by 100 to get 200 to find 1% of 20,000.

Then, I multiplied 325 by 200 to get 65,000

Finally, I added 20,000 to 65,000 to get 85,000

So, I guess/answer is $85,000

If I was wrong, then just say, "Sorry, but that was incorrect."

5 0
3 years ago
Read 2 more answers
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