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3 years ago

A circle has a radius of 5/3 units and is centered at (9.2. -7.4).

Mathematics

1 answer:

Irina-Kira [14]3 years ago

5 0

Answer:

Step-by-step explanation:

eq. of circle is (x-a)²+(y-b)²=r²

where (a,b) is the centre and r the radius.

(x-9.2)²+(y+7.4)²=(5/3)²

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Write 3x = 66 as a logarithmic function.

Musya8 [376]

Log(3) + log(x)=log(66)
log(x)=log(66)-log(3)
log(x)=log(66/3)
log(x)=log(22)
x=22

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3 years ago

Read 2 more answers

A scalene triangle is obtuse. <br> Determine if the statement is always, sometimes, or never true.

valentina_108 [34]

Answer:

sometimes

Step-by-step explanation:

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2 years ago

What is the solution to he equation (y/y-4)-(4/y+4)=3^2/y^2-16

kicyunya [14]

Answer:

$y=\pm i \sqrt{7}$

Step-by-step explanation:

Given equation is $\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{3^2}{(y^2-16)}$

Factor denominators then solve by making denominators equal

$\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{3^2}{(y^2-16)}$

$\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{9}{(y+4)\left(y-4\right)}$

$\frac{y\left(y+4\right)-4\left(y-4\right)}{\left(y-4\right)\left(y+4\right)}=\frac{9}{(y+4)\left(y-4\right)}$

$y\left(y+4\right)-4\left(y-4\right)=9$

$y^2+4y-4y+16=9$

$y^2=9-16$

$y^2=-7$

take squar root of both sides

$y=\pm \sqrt{-7}$

$y=\pm i \sqrt{7}$

Hence final answer is $y=\pm i \sqrt{7}$ .

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3 years ago

A sample has a sample proportion of 0.3. which sample size will produce the

jasenka [17]

The sample size of 36 will produce the widest 95% confidence interval when estimating the population parameter option (b) is correct.

<h3>What are population and sample?</h3>

It is described as a collection of data with the same entity that is linked to a problem. The sample is a subset of the population, yet it is still a part of it.

We have:

A sample has a sample proportion of 0.3.

Level of confidence = 95%

At the same confidence level, the larger the sample size, the narrower the confidence interval.

As we have a 95% confidence interval the sample size should be lower.

The sample size from the option = 36 (lower value)

Thus, the sample size of 36 will produce the widest 95% confidence interval when estimating the population parameter option (b) is correct.

Learn more about the population and sample here:

brainly.com/question/9295991

#SPJ1

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1 year ago

True or False? A right triangle can have a leg measuring 10cm and a hypotenuse measuring 10cm

Citrus2011 [14]

True, and it's called an isosceles right triangle :D

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2 years ago