3 years ago

Brainliest!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Genrish500 [490]3 years ago

6 0

Answer:

Step-by-step explanation:

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A wheel make 192 revolutions per minutes. how many revolutions does it make per second

valina [46]

$\frac{192 revs}{min} * \frac{1 min}{60 secs}$

The minutes cancel out leaving you with:

$\frac{192 revs}{60 secs}$ = 3.2 revs per second.

The wheel does 3.2 revolutions per second.

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3 years ago

Pls answer...thanks.

Sonja [21]

I think it whether 90 or 180 is there multiple choices?

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2 years ago

What's the answer for these two?<br> y= -2x+9<br> y=4x-3

Klio2033 [76]

Answer:

4.5 and .75 or 9/2 and 3/4

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2 years ago

the local independent party wants to poll registered voters to see the proportion who would consider voting for an independent c

SpyIntel [72]

Answer: 1308

Step-by-step explanation:

Given : Level of confidence = 0.97

Significance level : $\alpha=1-0.97=0.03$

Critical value : $z_{\alpha/2}=2.17$

Margin of error : $E=0.03$

If prior proportion of population is unknown , then the formula to find the population proportion is given by :-

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2$

$\Rightarrow n=0.25(\dfrac{2.17}{0.03})^2=1308.02777778\approx1308$

Hence, the minimum sample size needed =1308

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2 years ago

PLEASE HELP

Sati [7]

Answer:

The answer is A, ab<cd.

Step-by-step explanation:

If a, b, c, d are positive, and if a b < c d , then Ab>cd is always true

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3 years ago