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1 year ago

3y+y+2y-4y3y+y+2y−4y please help

Mathematics

2 answers:

rusak2 [61]1 year ago

4 0

Simplified Answer: -4y^4 + 5y

Flura [38]1 year ago

3 0

-4y^4+5y you just have to combine like terms

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Elena is trying to draw a triangle with side lengths of 4 inches and 3 inches what could be the length of the third side in orde

earnstyle [38]

Elena should put a point where the two circles intersect and draw line segments connecting that point to points A and B to finish her triangle.

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2 years ago

Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p. n equals

Alekssandra [29.7K]

Answer:

(0.767,0.833)

Step-by-step explanation:

The 95% confidence interval for population proportion p can be computed as

$p-z_{\frac{\alpha }{2} } \sqrt{\frac{pq}{n} }$

The z-value associated with 95% confidence level is 1.96.

whereas p=x/n

We are given that x=440 and n=550.

p=440/550=0.8

$0.8-1.96\sqrt{\frac{0.8(0.2)}{550} }$

$0.8-1.96\sqrt{\frac{0.16}{550} }$

$0.8-1.96\sqrt{0.00029 }$

$0.8-1.96(0.01706)$

$0.8-0.03343$

$0.76657$

Thus, the required confidence interval is

0.767<P<0.833 (rounded to 3 decimal places)

Hence, we are 95% confident that our true population proportion will lie in the interval (0.767,0.833)

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2 years ago

In the souvenir shop, Gary finds a shirt and a key chain he would like to buy. The shirt costs $13.75 and the key chain costs $2

Firlakuza [10]

Answer:

$16.08

Step-by-step explanation:

13.75+2.33=16.08

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2 years ago

Please help me with these 2 questions!!

IceJOKER [234]

Answer: 53. B similar

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

HELP FAST PLEASE!!!

Alisiya [41]

Answer:

$y = -0.75x + 9.5$

Step-by-step explanation:

Equation of a circle is given as :

$(x-a)^{2} + (y-b)^2 = r^{2} \\(x-6)^{2} + (y-5)^2 = 4^{2}\\x^{2} - 12x + 36 + y^{2} -10y + 25 = 16\\x^{2} - 12x + y^{2} -10y + 45 = 0\\$

Take the derivative of the above with respect to x

$2x - 12 + 2y dy/dx - 10 dy/dy = 0\\\frac{dx}{dy} = \frac{6 - x}{y-5} \\At (2,8) dy/dx = (6-2)/(8-5) = 4/3\\dy/dx = 4/3\\The slope of the tangent to the circle, m = \frac{-1}{dy/dx} \\m = \frac{-1}{4/3}\\m= -0.75$

The equation of the tangent is given by :

$y - y_{1} = m(x - x_{1})\\ y - 8 = -0.75(x - 2)\\y - 8 = -0.75x + 1.5\\y = -0.75x + 9.5$

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2 years ago

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​ 3y+y+2y-4y3y+y+2y−4y please help

3y+y+2y-4y3y+y+2y−4y please help