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Serjik [45]
2 years ago
5

Simplify expression. help me please

Mathematics
1 answer:
tatuchka [14]2 years ago
6 0

Answer:

\frac{-1}{x+3}

Step-by-step explanation:

Hope this helps!

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7 MORE THAN TWICE a number n
Sever21 [200]

Answer:

2n+7

Step-by-step explanation:

7 more than twice n would be:

2n+7

this is because twice n would mean that you'd multiply n by 2, and by 7 more than they mean you would add 7 to that.

5 0
2 years ago
The city council is considering a law that would ban smoking in all public facilities. A sample has been selected from the commu
lisov135 [29]

Answer:

Reject Null Hypothesis given that  P-value < ∝

Step-by-step explanation:

Applying the Five ( 5 ) step model and assuming ∝ = 0.05

First step : determine the Null hypothesis

H0 : Age and support for Anti-smoking = independent

Second step : Determine the alternate hypothesis

Ha : Age and support for Anti-smoking ≠ independent

Thirdly : Identify significance level ( ∝ ) = 0.05

4th step : Calculate the Test statistic and P-value

Chi-squared test = 36.1429 using excel function

P-value =  1 - CHISQ.DIST(36.1429, 1, TRUE)  < 0.0001

finally : we can conclude that Age and support for Anti -smoking are not Independent hence we Reject The Null hypothesis. Given that

P-value < ∝

3 0
3 years ago
Convert r=53sinθ−cosθ to rectangular form.
Helga [31]

Answer:

y = \frac{1}{3} x + \frac{5}{3}

Step-by-step explanation:

r = 5/(3sinθ-cosθ)

multiply both sides by (3sinθ-cosθ):

r(3sinθ-cosθ) = 5

expand:

3rsinθ-rcosθ = 5

replace rsinθ with y and rcosθ with x:

3y-x = 5

add x to both sides:

3y = x + 5

divide both sides by 3:

y = 1/3x + 5/3

: )

3 0
3 years ago
Help me please i need this urgent
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8 0
3 years ago
A model of a​ tractor-trailer is shaped like a rectangular prism and has width 3 in.​, length 10 in.​, and height 4 in. The scal
aleksandr82 [10.1K]
33 plus 4 is 37 and 10plus 1 is 12 so add that and get 49
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3 years ago
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