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3 years ago

((PLEASE ANSWER WITH A B C or D))

Mathematics

1 answer:

natali 33 [55]3 years ago

8 0

Answer:

D. 60°

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that the relationship of interest is ...

Sin = Opposite/Hypotenuse

sin(M) = ON/OM = 4(√3)/8 = (√3)/2

M = sin⁻¹((√3)/2) = 60°

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So this is the question 68x21m=?

zepelin [54]

Answer:

1428m

Step-by-step explanation:

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3 years ago

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A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 respondents,

nataly862011 [7]

Answer:

n=500 represent the random sample taken

$\hat p=0.12$ estimated proportion of people that chose chocolate pie

$\hat q =1-\hat p=1-0.12=0.88$ represent the people that NOT chose chocolate pie

E=0.05 represent the error or margin of error given by the following formula:

$ME=z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

p= true population proportion of people that chose chocolate pie

If the confidence level is 90 %, what is the value of alpha ?

$\alpha=1-0.9 =0.1$ and the value of $\alpha/2 =0.05$ ,

$z_{\alpha/2}=-1.64$ and $z_{1-\alpha/2}=1.64$

$ME=1.64 \sqrt{\frac{0.12(1-0.12)}{500}}=0.0238$

Step-by-step explanation:

Data given and notation

What values do ModifyingAbove p with caret , ModifyingAbove q with caret , n, E, and p represent?

n=500 represent the random sample taken

X represent the people that chose chocolate pie

$\hat p=0.12$ estimated proportion of people that chose chocolate pie

$\hat q =1-\hat p=1-0.12=0.88$ represent the people that NOT chose chocolate pie

E=0.05 represent the error or margin of error given by the following formula:

$ME=z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

z would represent the quantile of the normal standard distribution

p= true population proportion of people that chose chocolate pie

The confidence interval for the population proportion is given by this formula :

$\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

If the confidence level is 90 %, what is the value of alpha ?

On this case the value for the significance would be $\alpha=1-0.9 =0.1$ and the value of $\alpha/2 =0.05$ , we can find the quantiles of the normal standard distribution given by:

$z_{\alpha/2}=-1.64$ and $z_{1-\alpha/2}=1.64$

And with the following excel codes:

"=NORM.INV(0.05,0,1)" "=NORM.INV(1-0.05,0,1)"

And we can find the margin of error like this:

$ME=1.64 \sqrt{\frac{0.12(1-0.12)}{500}}=0.0238$

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4 years ago

How many pounds of blueberries can u buy for 1.00

navik [9.2K]

Depends on your store and how much they cost this isn’t a mathematics question and most people buy blueberries in little packets not by the pound

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3 years ago

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A bucket holds b liters of water. But a jar holds 8 fewer liters than the bucket. How many times can the bucket hold than the ja

kykrilka [37]

Answer:

b / (b - 8)

Step-by-step explanation:

Given that :

Litres of water held by bucket = b

Jar holds 8 litres fewer than bucket; hence, litres held by jar = b - 8

The number of times bucket can hold than jar is :

Litres held by bucket / litres held by jar

b / (b - 8)

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3 years ago

2+2+2+2+10+20+800=x+1/2

zhannawk [14.2K]

First add <span>2+2+2+2+10+20+800.

</span><span>2+2+2+2+10+20+800 = 838

838 = x + 1/2

change 1/2 = 0.5 (as 1 divided by 2 = 0.5)

838 = x + 0.5

isolate the x by subtracting 0.5 from both sides

838 (-0.5) = x + 0.5 (- 0.5)
x = 838 - 0.5
x = 837.5

hope this helps</span>

3 0

3 years ago