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Makovka662 [10]

3 years ago

13

I wanna buy 3/8 a pound of Swiss cheese and 1/4 pound of American cheese.which pairs of fractions are equivalent to the amount a

lana bought ?

1 answer:

Diano4ka-milaya [45]3 years ago

4 0

B, and D i think is right

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Find the exact area of the sector of the circle with the following radius and central angle

Lostsunrise [7]

THe area of the whole circle is pi r^2 = 6^2 * pi = 36pi

There are 360 degrees in a crcle so this sectors area i (30/360) *36pi

= 3 pi

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Write a number that is the same when rounded to the nearest hundred and ten

inn [45]

202 because you can round it to 200

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3 years ago

Which expression is not equivalent to others? Explain.

slega [8]

B. This is the answer because it is not equivalent to anything else, and the answer simplified is: -18.

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2 years ago

Which of the following choices is the simple formula for the nth term of the following arithmetic sequence?

kkurt [141]

$\bf 7~~,~~\stackrel{7-4}{3}~~,~~\stackrel{3-4}{-1}~~,~~\stackrel{-1-4}{-5}~~,~~\stackrel{-5-4}{-9}~~,~~...$

so namely, the "common difference" d = -4, and the first term a₁ = 7.

$\bf n^{th}\textit{ term of an arithmetic sequence}
\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
d=-4\\
a_1=7
\end{cases}
\\\\\\
a_n=7+(n-1)(-4)\implies a_n=7+(4-4n)
\\\\\\
a_n=11-4n\implies a_n=-4n+11$

8 0

3 years ago