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3 years ago

Could you help please i will give points but please explain

Mathematics

1 answer:

Leno4ka [110]3 years ago

4 0

Answer: 7/12

Step-by-step explanation: Given that,

(5/6) - (1/4) = ?

The difference Will be, take L.C.M. of 6 and 4 which is 12, then we get,

= ( 10 - 3 ) / 12

= 7 /12

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Aubrey, a pet store employee, wants to fit two fish tanks on one table. One fish tank is 1/6 of a foot wide and the other fish t

Anna007 [38]

Answer:

1/1

Step-by-step explanation:

1/6+5/6 simple adding with fractions its would be 1 foot

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3 years ago

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A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Houston. The stud

iris [78.8K]

Answer:

$-0.048$

Do not reject $H_0:P_1-P_2=0$

Step-by-step explanation:

From the question we are told that

Sample size $n_1=350$

Sample size $n_2=250$

Sample proportion 1 $\hat P= \frac{25}{350} =>0.07$

Sample proportion 2 $\hat P= \frac{19}{250} =>0.076$

95% confidence interval

Generally for 95% confidence level

Level of significance

$\alpha = 1-0.95=>0.05$

$\alpha /2=\frac{0.05}{2} =>0.025$

Therefore

$Z_a_/_2=1.96$

Generally the equation for confidence interval between $P_1 - P_2$ is mathematically given as

$(\hat P_1-\hat P_2)\pm Z_a_/_2\sqrt{\frac{\hat P_1(1-\hat P_1)}{n_1}+\frac{\hat P_2(1-\hat P_2)}{n_2} }$

$(0.07-0.076)\pm 1.96\sqrt{\frac{0.07(1-0.07)}{350}+\frac{0.076(1-0.076)}{250} }$

$(0.07-0.076)\pm 1.96\sqrt{4.66896*10^-^4 }$

$(-0.006)\pm 0.042$

$(-0.006)- 0.042=>-0.048$

$(-0.006)+ 0.042=>0.036$

Therefore

Confidence interval is

$-0.048$

Conclusion

Given the confidence interval has zero

Therefore do not reject $H_0:P_1-P_2=0$

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2 years ago

The area of Jackson's rectangular garden is 64 square ft. If the length of the garden is 16 ft, what is the width of the garden?

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The width of the garden is 4

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3 years ago

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Find the area of a quarter circle with the radius of 6cm

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Answer:

28.27cm³

Step-by-step explanation:

Area of a circle:

$A=\pi r^2$

First, find the area of a full circle with this given radius:

$\rightarrow A=(3.14159)(6)^2\\\rightarrow A=(3.14159)(36)\\\rightarrow A=113.09734\\$

Now, to find the radius of a quarter circle with the same radius, just divide by 4:

$\rightarrow A = \frac{113.09734}{4}\\\rightarrow A = 28.27433$

The radius of the quarter circle is about 28.27cm³

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2 years ago

Mathematics inequality

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A
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3 years ago