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2 years ago

Solve each system by substitution. y = -4x - 18 y = -3x - 13

Mathematics

1 answer:

evablogger [386]2 years ago

7 0

Answer:

x=5 and y=2

Step-by-step explanation:

hope it will enough to explain u .... if anything extra needed then ask me in comment section

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Solve for x. x−2.7 ≥ 10.3x

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$0.23893805309 \geq x$

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3 years ago

The parallelogram shown represents a map of the boundaries of a natural preserve. Walking trails run from points A to C and from

Citrus2011 [14]

y+2 = 3y-4 =

y+6 = 3y

6 =2y

y = 3

y+2 = 3+2 = 5

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answer is C

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3 years ago

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There is a row of 15 trees in a garden. Starting from the first tree, a gardener marked every second tree, then, on his way back

zzz [600]

Answer:2

Step-by-step explanation:

15/3 = 5

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= 13

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4 0

1 year ago

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We were never taught this in class, and I understand it, kind of... but i'm just confused with everything.

GaryK [48]

$\bf \cfrac{x^3y}{xy^5}\cdot \cfrac{x^2y^9}{x^8}\implies \cfrac{x^3x^2y^1y^9}{x^1x^8y^5}
\\ \quad \\
\textit{now, using exponent rules, same base, different exponent}
\\ \quad \\
\cfrac{x^{3+2}y^{1+9}}{x^{1+8}y^5}\implies \cfrac{x^5y^{10}}{x^9y^5}\\
----------------------------\\$ $\bf \textit{now, keep in mind that}
\\ \quad \\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}\qquad \qquad

\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\\ \quad \\
% negative exponential denominator
a^{{ n}} \implies \cfrac{1}{a^{- n}}
\qquad \qquad 

\cfrac{1}{a^{- n}}\implies \cfrac{1}{\frac{1}{a^{ n}}}\implies a^{{ n}}
\\ \quad \\
thus\\
----------------------------\\
$ $\bf \cfrac{x^5y^{10}}{x^9y^5}\implies \cfrac{x^5y^{10}}{1}\cdot \cfrac{1}{x^9}\cdot \cfrac{1}{y^5}\implies x^5y^{10}\cdot x^{\boxed{-9}}\cdot y^{\boxed{-5}}
\\ \quad \\
x^5x^{-9}y^{10}y^{-5}\implies x^{5-9}y^{10-5}\implies x^{-4}y^5
\\ \quad \\
\cfrac{1}{x^{\boxed{4}}}\cdot \cfrac{y^5}{1}\implies \cfrac{y^5}{x^4}$

8 0

3 years ago

PLEASE HELP PLEASE HELP PLEASE

olasank [31]

Answer:

your answer is c hope this helps

Step-by-step explanation:

6 0

2 years ago

Solve each system by substitution. y = -4x - 18 y = -3x - 13​

Solve each system by substitution. y = -4x - 18 y = -3x - 13