3 years ago

Identify the conic section of xy=4

Mathematics

1 answer:

anyanavicka [17]3 years ago

6 0

This is a hyperbola check wiki for some guidance or plot it with wolfram alpha.

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3(a+b)=a+2 make a subject of the formula

Anit [1.1K]

Answer:

a = 2 - 3b

Step-by-step explanation:

3(a + b) = a + 2 expand

3a + 3b = a + 2

3a - a = 2 - 3b

2a = 2 - 3b

a = 2 - 3b

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2 years ago

.(09.08HC) Prove that the two circles shown below are similar.

Leni [432]

Both circles middles are positive

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2 years ago

The year the Greek city of Helike disappeared is -1/5 times the year the US civil war ended. Let w represent the year the war en

Lostsunrise [7]

Answer:

ok so

-1/5x=w

w=1865

so -1/5x=1865

x=-9325

Hope This Helps!!!

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2 years ago

Read 2 more answers

In a certain city of several million people, 7.7% of the adults are unemployed. If a random sample of 300 adults in this city is

Lilit [14]

Answer: 0.2643

Step-by-step explanation:

Given : The proportion of adults are unemployed : p=0.077

The sample size = 300

By suing normal approximation to the binomial , we have

$\mu=np=300\times0.077=23.1$

$\sigma=\sqrt{np(1-p)}=\sqrt{300\times0.077(1-0.077)}\\\\=4.61749932323\approx4.62$

Now, using formula $z=\dfrac{x-\mu}{\sigma}$ , the z-value corresponding to 26 will be :-

$z=\dfrac{26-23.1}{4.62}\approx0.63$

Using standard distribution table for z , we have

P-value= $P(z\geq0.63)=1-P(z$

$=1-0.7356527=0.2643473\approx0.2643$

Hence, the probability that at least 26 in the sample are unemployed =0.2643

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2 years ago

Solve inequality √(2−x) < x.

Bond [772]

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3 years ago