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3 years ago

8x + y = -39 2x - 5y = 27 Solve the system by elimination

Mathematics

1 answer:

Ahat [919]3 years ago

5 0

Answer:

(-4, -7)

Step-by-step explanation:

21y=-147

y=-7

2x-5x(-7)=27

x=-4

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What is the largest integer that can be divided into 14, 28 and 42?

Murljashka [212]

Answer:

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Step-by-step explanation:

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3 years ago

13 + k3= 11 Show work pls

zaharov [31]

13+3k=11
-Move constant to the right-hand side and change its sign
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4 years ago

Enter an algebraic expression to model the given context. Give your answer in simplest form. The original price p of an item les

ra1l [238]

Answer:

Step-by-step explanation:

Let

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3 years ago

Three times the difference of eight and twice a number is five times the number.

Softa [21]

Answer:

Step-by-step explanation:

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3 years ago

A Geometric series has a first term of 4 and a common ratio of 6. what formula is equivalent to the partial sum of the first n t

IRISSAK [1]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=4\\
r=6
\end{cases}
\\\\\\
S_n=4\left( \cfrac{1-6^n}{1-6} \right)\implies S_n=4\left( \cfrac{1-6^n}{-5} \right)$

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3 years ago