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2 years ago

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Here are the scores of 16 students on an algebra test. 63, 64, 68, 71, 72, 73, 74, 75, 75, 85, 86, 87, 90, 91, 92, 93 Notice tha

t the scores are ordered from least to greatest. Make a box-and-whisker plot for the data.

1 answer:

Studentka2010 [4]2 years ago

3 0

here you go, I think this is right

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SinA=√1-x÷√1+X<br> Find the value of cosA

Irina-Kira [14]

The value of cos A is √(1 + x²)/ (1 - x²) /√1 + x

<h3>Trigonometric ratios</h3>

It is important to note that

sin A = opposite/ hypotenuse

cos A = adjacent/ hypotenuse

Then,

opposite = $\sqrt{1} - x$

Hypotenuse = $\sqrt{1} + x$

Let's find the adjacent side using the Pythagorean theroem

$(\sqrt{1} + x)^2 = (\sqrt{1 -x } )^2 + x^2$

$1 + x^2 = 1 - x^2 + x^2$

$x = \sqrt{\frac{1 + x^2}{1 -x^2} }$

cos A = x/hypotenuse

$cos A = \frac{\sqrt{\frac{1+x^2}{1 -x^2} } }{\sqrt{1} +x}$

cos A = √(1 + x²)/ (1 - x²) /√1 + x

Thus, the value of cos A is √(1 + x²)/ (1 - x²) /√1 + x

Learn more about trigonometric identities here:

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6 0

1 year ago

Why are inequalities important in equations

Delicious77 [7]

Because the tell if he number is big or small

4 0

2 years ago

An oil tanker empties at 3.5 gallons per minute. Convert this rate to cups per second. Round to the nearest tenth.

ss7ja [257]

If given ratio is 3.5 gallons per minute and we want to cups per second we can do this knowing that
1 gallon= 16cups
1min = 60sec
ratio=3.5 $\frac{gallon}{minute}=3.5* \frac{16cups}{60 seconds} =3.5*0.266=0.933 \frac{cups}{sec}$
Its the result

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3 years ago

alukav5142 [94]

I think it was √(a^2+b^2. I think.

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2 years ago

X-y=1/5 slope intercept form

Irina18 [472]

Answer:

<u>y = x - 1/5</u>

Step-by-step explanation:

x - y = 1/5

5x - 5y = 1

5y = 5x - 1

<u>y = x - 1/5</u>

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2 years ago