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just olya [345]

3 years ago

6

Hey guys do any of you guys know the answer to this? I’m struggling with it and I still don’t know the answer plz help me! Thank

s!

1 answer:

Sunny_sXe [5.5K]3 years ago

4 0

Answer:

steps below

Step-by-step explanation:

DE/WX = 15/35 = 3/7

DF/WY = 24/56 = 3/7

EF/XY = 18/42 = 3/7

ΔDEF similar to ΔWXY (sss) : 3 corresponding sides are in the same ratio

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PLZ HELP!!!!! Find the slope of each line that passes through the given points. (−2, 1) and (6, −5)

EastWind [94]

Answer:

m = -3/4

Step-by-step explanation:

-5 - 1 / 6 - -2 = -6/8 = -3/4

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Allie went trick - or - treating one day. she wanted to dress up as a princess but her costume costs $340. she only as $119. how

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459

Step-by-step explanation:

340+119=459

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2 years ago

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What is the sum of the geometric series in which a1 = 4, r = 3, and an = 324?

olganol [36]

$\bf n^{th}\textit{ term of a geometric sequence}\\\\
a_n=a_1\cdot r^{n-1}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=4\\
r=3\\
a_n=324
\end{cases}
\implies 
324=4(3)^{n-1}
\\\\\\
\cfrac{324}{4}=3^{n-1}\implies 81=3^{n-1}\implies 3^4=3^{n-1}\implies 4=n-1
\\\\\\
\boxed{5=n}\\\\$

$\bf -------------------------------\\\\
\qquad \qquad \textit{sum of a finite geometric sequence}\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=4\\
r=3\\
n=5
\end{cases}
\\\\\\
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and surely you know how much that is.

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3 years ago

What would the second point be with point (-2,-5) to get a line with the slope of -1

choli [55]

Answer:

A second point would be (-1, -6)

Step-by-step explanation:

Because the slope is -1, we know that for every number that x increases, we change y the amount of the slope. So, if we increase x by 1, we change y by -1.

x value

-2 + 1 = -1

y value

-5 - 1 = -6

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3 years ago

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Pachacha [2.7K]

Y=3/4x-2

the y intercept is -2
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3 years ago