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3 years ago

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Jose and Tamara are decorating for a party. They have two different color streamers, red and blue. The ratio of length of red to

length of blue is 2 to 3. If there is 38 ft of red streamer, how many feet of blue do they have?

2 answers:

tia_tia [17]3 years ago

4 0

57

38*1.5

It’s a proportionate relationship

Kaylis [27]3 years ago

4 0

The Answer Is 57 since it’s a proportionate relationship

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Ming works as a quality assurance analyst at a bottling factory. She wants to use a one-sample z interval to estimate what propo

Nastasia [14]

Answer:

Sample size is $n=423$

Step-by-step explanation:

Given that,

Margin of error $=4$ %

Confidence level $=90$ %

Suppose, sample proportion $=0.5$

i.e. $\hat{P}=0.5$

We know that,

Margin of error $=2^*\sqrt{\frac{\hat{p}(1-\hat{p})}{n} }$

∴ $1.64\sqrt{\frac{0.5(0.5)}{n} } \leq 4\%$

$\Rightarrow 1.64\sqrt{\frac{0.25}{n} } \leq 0.04$

$\Rightarrow \frac{0.5}{\sqrt{n} } \leq \frac{0.04}{1.64}$

$\Rightarrow \frac{0.5}{\sqrt{n} } \leq 0.0243$

$\Rightarrow \sqrt{n}\geq \frac{0.5}{0.0243}$

$\Rightarrow \sqrt{n}\geq 20.57$

squaring on both side,

∴ $n=423.1249$

Hence, the sample size is,

$n=423$

Hence, the correct option is $(b).$

7 0

3 years ago

A person invests $125 at 3% interest. how long will it take to be worth 300

aleksandr82 [10.1K]

A tad more than 29 years, but that depends on the number of times it is being compounded

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3 years ago

PLEASE ANSWER QUICK!!! Identify the equation of the circle that has its center at (-8, 15) and passes through the origin.

valentinak56 [21]

(X+8)^2+(y-15)^2=289 would be the equation to the circle

6 0

3 years ago

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(2.5×10−8)(9×10−10)<br><br> Express your answer in scientific notation.

Lunna [17]

Answer: 2.25x $10^{-17}$

Scientific notation is used in science because the number can be vary from so much that using decimal is making it hard. The number expressed in $10^{x}$ form. Both number in the question is already in scientific notation. Then to multiply the number and keep it at scienfitic notation the calculation should be:

2.5 x $10^{-8}$ x 9 x $10^{-10}$ = 22.5 x $10^{-18}$ = 2.25x $10^{-17}$

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3 years ago

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Free 50 point your welcome fam

Travka [436]

Answer:

That pretty cute

Step-by-step explanation:

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3 years ago

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