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2 years ago

PLEASE HELP ASAP!! 180x=2(30÷3)+17-5•11+2÷1 = ?

Mathematics

2 answers:

Georgia [21]2 years ago

7 0

180x=2(30÷3)+17-5•11+2÷1 = ?

Simplify the right side:

180x = 2(10) + 17 - 55 + 2 =

180x = 20 + -36 =

180x = -16

Now divide both sides by 180:

x = -16 /180

x = -4/45 or -0.0888

Rainbow [258]2 years ago

4 0

Answer:

x = -4/45

Step-by-step explanation:

180x=2(30÷3)+17-5•11+2÷1

We need to simplify the right hand side. The first step is the parentheses

180x=2(10)+17-5•11+2÷1

Then multiply and divide, working left to right from the equals sign.

180x=20+17-5•11+2÷1

180x=20+17-55+2÷1

180x=20+17-55+2

Now we add and subtract working left to right from the equals sign.

180x=37-55+2

180x =-18+2

180x = -16

Divide each side by 180

180x/180 = -16/180

x = -4/45

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And we can use the following excel code to find it: "=NORM.INV(0.01,0,1)"

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And we can use the following excel code to find it: "=NORM.INV(0.1,0,1)"

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Step-by-step explanation:

Data given and notation

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X represent the people indicated that they watch the late evening news on this local CBS station

$\hat p=0.36$ estimated proportion of people indicated that they watch the late evening news on this local CBS station

$p_o=0.41$ is the value that we want to test

$\alpha=0.05$ represent the significance level

Confidence=95% or 0.95

z would represent the statistic (variable of interest)

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Alternative hypothesis: $p < 0.41$

Part 2

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Part 3

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Since we have all the info requires we can replace in formula (1) like this:

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$z_{crit}=-1.28$

And we can use the following excel code to find it: "=NORM.INV(0.1,0,1)"

Part 6

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