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3 years ago

I need help for the Iready end of the year test plzzzzzzzzzzzzzz

Mathematics

1 answer:

tresset_1 [31]3 years ago

3 0

Answer: The first option, the one in orange.

Step-by-step explanation:

This is the associative property.

Hope this helps, good luck on the test! :)

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Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

What is the slope of a line that contains the points (-1, 9) And 5, 21)

TEA [102]

C.) 2

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3 years ago

If tanx =√24 and cosx =−2√23, find sinx.

mylen [45]

Answer:

Step-by-step explanation:

sin(x)=cos(x) × tan(x)

=(-2√23)×(√24)

=(-2√23)×(2√6)

=(-4√138)

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3 years ago

The circumference of a circle is 15n cm what is the area of the circle in terms of n

Mice21 [21]

Answer:

Area of circle is $\dfrac{225n^{2}}{4\pi} cm^{2}$

Step-by-step explanation:

Formula for circumference of circle is given as,

$C=2\pi r$

Given that C = 15 n cm,

Substituting the value,

$15n=2\pi r$

Solving above equation for r, divide both side by $2\pi$

$\dfrac{15n}{2\pi}=\dfrac{2\pi r}{2\pi}$

Simplifying,

$\dfrac{15n}{2\pi}=r$

Formula for area of circle is given as,

$A=\pi r^{2}$

Substituting the value of r,

$A=\pi \left(\dfrac{15n}{2\pi}\right)^{2}$

Squaring the parenthesis,

$A=\pi \left(\dfrac{225n^{2}}{4\pi^{2}}\right)$

Cancelling out the common term,

$A=\dfrac{225n^{2}}{4\pi}$

Therefore, area of circle in terms of n is $A=\dfrac{225n^{2}}{4\pi} cm^{2}$

5 0

4 years ago