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uranmaximum [27]
3 years ago
12

Round to the nearest tenth if necessary

Mathematics
1 answer:
GREYUIT [131]3 years ago
8 0

Answer:

Step-by-step explanation:

a=30

b= 17

c= 18

we actually already found angles B and C for the last problem I think we said 30 and 32 so we would be able to guess that angle A is about 118° but.. let's do the math... and see

angle A = arcCos[ b^2 + c^2 - a^2 / 2*b* c ]

A = arcCos[ 289 +324 - 900 / 2*17*18]

A = arcCos[ -287 / 612 ]

A = arcCos[ -0.468954 ]

A = 117.9664 °

ohh and we're off by 0.0336   phooy  :P soo far off... :P

rounding to nearest 10th

A = 118.0 °  ( ohh right on the money  :P)  yay, I feel better.  :P

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A magazine article conducted a survey of 525 people in New York City and found that 30% of the population believe that the Yanke
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Answer:

In this case, the 30% represents the proportion of the sample. It is a statistic that can be used to estimate a parameter of the population.

Step-by-step explanation:

In this case, the 30% represents the proportion of this specific sample (survey taken by the magazine).

It is a statistic that can be used to estimate a parameter of the population. In this case, it may be used to estimate the true proportion of "people in New York who believe that the Yankees will miss the playoffs this year".

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3 0
3 years ago
I need not just the answer but the work written out
Mekhanik [1.2K]

Answer:

A(3) = -6 + (3 - 1) (5)

-6 + (2)(5)

-6 + (10)

4

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A(10) = -6 + (10 - 1) (5)

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6 0
3 years ago
Please help with this question!! I need serious help!!
asambeis [7]

Answer:

<h2>The circumference is multipled by 4.</h2>

Step-by-step explanation:

The formula of an area of a circle"

A=\pi r^2

The formula of a circumference of a circle:

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The area multipled by 16:

16A=16\pi r^2\\\\16A=\pi(4^2r^2)\\\\16A=\pi(4r)^2

The radius has increased fourfold, therefore:

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The circumference is multipled by 4.

You can calculate the area and check the circumference:

r=11.6\ in\\\\A=\pi(11.6)^2=132.56\pi\\\\16A=(16)(134.56\pi)=2152.96\pi\ in^2

Calculate the radius:

\pi r^2=2152.96\pi             <em>divide both sides by π</em>

r^2=2152.96\to r=\sqrt{2152.96}\\\\r=46.4\ in

Calculate the circumference of both circles:

r=11.6\ in\\\\C=2\pi(11.6)=23.2\pi\ in

r=46.4\ in\\\\C'=2\pi(46.4)=92.8\pi\ in

\dfrac{C'}{C}=\dfrac{92.8\pi}{23.2\pi}=4\to C'=4C

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( 2 , - 2 )

................

................

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