3 years ago

Assignment

Mathematics

2 answers:

stich3 [128]3 years ago

8 0

Answer:

Step-by-step explanation:

Irina-Kira [14]3 years ago

5 0

Manda una captura a ver

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This is a test so it would be great if you could help! I suck at math lol

inna [77]

Answer:

3/2

Step-by-step explanation:

Order y pairs, you could do x pair if u wanted.

(9,3,3)

(6,2,2)

If u divided 9/6 it gives you 3/2 same with the other two pairs.

6 0

3 years ago

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 $(b).$

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3 years ago

The ratio of the surface areas of two similar solids is 49:100. What is the ratio of their corresponding side lengths?

algol13

<span>ratio of surface area = 49:100
ratio of corresponding lengths = √49:√100 = 7:10
answer: C

Hope this helps

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3 years ago

Read 2 more answers

The diagram shows a cuboid.

nika2105 [10]

Cuboid has 6 faces. If each face was 2m squared, that would be 2m squared times 6 which is 12m squared

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3 years ago

What multiplication problem equals 130

love history [14]

26*5 130 divided by 6=5

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3 years ago