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dem82 [27]
2 years ago
14

A rectangle has an area of 15/100 square unit. The length of the rectangle is 3/10 unit. What is the width of the rectangle?

Mathematics
1 answer:
marysya [2.9K]2 years ago
4 0
Hope this helps. Let me know if you have more questions.

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Please help quick!! i’ll give brainliest!!
Bas_tet [7]

Answer:

its the second one i belive

Step-by-step explanation:

8 0
3 years ago
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 215 vinyl​ glov
pickupchik [31]

Answer:

z=\frac{0.7-0.07}{\sqrt{0.385(1-0.385)(\frac{1}{215}+\frac{1}{215})}}=13.42  

p_v =P(Z>13.42)\approx 0  

So the p value is a very low value and using any significance level given \alpha=0.01 we se that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that vinyl gloves have a greater virus leak rate than latex gloves at 1% of significance.

Step-by-step explanation:

Data given and notation  

n_{V}=215 sample of vinyl gloves selected

n_{L}=215 sample of latex gloves selected

p_{V}=0.7 represent the proportion of vynil gloves with leaked viruses

p_{L}=0.07 represent the proportion of latex gloves with leaked viruses

z would represent the statistic (variable of interest)  

p_v represent the value for the test (variable of interest)

Concepts and formulas to use  

We need to conduct a hypothesis in order to check if the vinyl gloves have a greater virus leak rate than latex gloves , the system of hypothesis would be:  

Null hypothesis:p_{V} \leq p_{L}  

Alternative hypothesis:p_{V} > \mu_{L}  

We need to apply a z test to compare proportions, and the statistic is given by:  

z=\frac{p_{V}-p_{L}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{V}}+\frac{1}{n_{L}})}}   (1)

Where \hat p=\frac{X_{V}+X_{L}}{n_{V}+n_{L}}=\frac{0.7+0.07}{2}=0.385

Calculate the statistic

Replacing in formula (1) the values obtained we got this:  

z=\frac{0.7-0.07}{\sqrt{0.385(1-0.385)(\frac{1}{215}+\frac{1}{215})}}=13.42  

Statistical decision

Since is a one right tailed test the p value would be:  

p_v =P(Z>13.42)\approx 0  

So the p value is a very low value and using any significance level given \alpha=0.01 we se that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that vinyl gloves have a greater virus leak rate than latex gloves at 1% of significance.

3 0
3 years ago
Read 2 more answers
The hands of a clock show the time 12:25 what kind of angle exists between the hands od the clock
Karo-lina-s [1.5K]

Answer:

Obtuse Angle

Hope this helps :)

7 0
3 years ago
Marisol is preparing a care package to send to her brother. The package will include a board game that weighs 4 lb and several 1
masya89 [10]
Let x be the number of snack packs, then
4 + 14x < 25
14x < 25 - 4
14x < 21
x < 21/14
x < 1.33


5 0
2 years ago
Convert 15 kilograms to pounds.
seraphim [82]
Your answer would be 33 lb. hope that helped
8 0
3 years ago
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