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3 years ago

4

29 points!!!! Help me!!!

2 answers:

Dmitriy789 [7]3 years ago

7 0

The answer is: X = 6

White raven [17]3 years ago

4 0

4/5 (15x+20) - 7x =5/6 (12x -24) +6 x=6

2x-4/5 = x+4 x=-8

hope this helped

p.s brainliest would help :) have a nice day

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3.14159265358979 is the first ten digits of pi.

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Describe fully the graph which has equation x2 + y2 = 9

zmey [24]

Answer:

The graph is a circle with a radius of 3 and a center of (0,0).

Step-by-step explanation:

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3 years ago

If z^2+1/z^2=11 , find the value of z^3-1/z^3,using only the positive value of z-1/z

vredina [299]

Hello,

Let's assume

$t=z- \dfrac{1}{z} \\\\

t^2=z^2-2+ \dfrac{1}{z^2}= 11-2=9==\ \textgreater \ t=3\\\\

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3 years ago

Answer this problem.<br><br> Simplify <br><br> a. 63.19<br> b. 25.84<br> c. 81.49<br> d. 94.57

just olya [345]

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4 years ago

In a random sample of 300 attendees of a minor league baseball game, 182 said that they bought food from the concession stand. C

horrorfan [7]

Answer:

<em>90% confidence interval for the proportion of fans who bought food from the concession stand</em>

(0.5603,0.6529)

Step-by-step explanation:

<em>Step(i)</em>:-

<em>Given sample size 'n' =300</em>

Given data random sample of 300 attendees of a minor league baseball game, 182 said that they bought food from the concession stand.

<em>Given sample proportion </em>

<em> </em> $p^{-} = \frac{x}{n} = \frac{182}{300} =0.606$

level of significance = 90% or 0.10

Z₀.₁₀ = 1.645

<em>90% confidence interval for the proportion is determined by</em>

$(p^{-} - Z_{0.10}\sqrt{\frac{p(1-p)}{n} } , p^{-} +Z_{0.10}\sqrt{\frac{p(1-p)}{n} })$

$(0.6066 - 1.645\sqrt{\frac{0.6066(1-0.6066)}{300} } ,0.6066+1.645\sqrt{\frac{0.6066(1-0.6066)}{300} })$

(0.6066 - 0.0463 ,0.6066 + 0.0463)

(0.5603,0.6529)

<u>final answer</u>:-

<em>90% confidence interval for the proportion of fans who bought food from the concession stand</em>

(0.5603,0.6529)

5 0

3 years ago