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3 years ago

QUICK HELP!! If two linear equations have one solution, then the...

Mathematics

1 answer:

nevsk [136]3 years ago

3 0

Answer:

Step-by-step explanation:

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Doug bought a new car for $25,000. He estimates his car will depreciate, or lose value, at a rate of 20% per year. The value of

Ganezh [65]

These are the values you have:
P = 25000 (original car value)
r = 20% or .2 rate of decrease
t = 4 1/2 or 4.5

Plug these into the equation: $V=25000(1-.2)^4^.^5 = 9159$

5 0

3 years ago

Read 2 more answers

Determine the number of solutions of the system 4x - y = 6 8x -2y = 12

zepelin [54]

Answer:

one solution

Step-by-step explanation:

both equations equal out to y=-4x+6

6 0

3 years ago

Simplify (2x − 5)(3x² + 7x− 8)

Amanda [17]

Answer:

6x³-x²-51x+40

Step-by-step explanation:

(2x − 5)(3x² + 7x− 8)

6x³ +14x² -16x -15x² -35x +40

add like terms:

6x³ -x² -51x +40

3 0

3 years ago

The coordinates of point T are (0,3).The midpoint of ST is (5,-8).Find the coordinates of point S.

rewona [7]

$\bf ~~~~~~~~~~~~\textit{middle point of 2 points }
\\\\
S(\stackrel{x_1}{x}~,~\stackrel{y_1}{y})\qquad
T(\stackrel{x_2}{0}~,~\stackrel{y_2}{3})
\qquad
\left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right)
\\\\\\
\left( \cfrac{0+x}{2}~~,~~\cfrac{3+y}{2} \right)=\stackrel{midpoint}{(5,-8)}\implies
\begin{cases}
\cfrac{0+x}{2}=5\\[0.8em]
\boxed{x=10}\\[-0.5em]
\hrulefill\\
\cfrac{3+y}{2}=-8\\[0.8em]
3+y=-16\\
\boxed{y=-19}
\end{cases}$

8 0

3 years ago

Which of the following arrangement of the numbers 75, 4, 3,100 forms a proportion?

Klio2033 [76]

Answer:

b) 3,4,75,100

Step-by-step explanation:

Since in the question it is mentioned that

75,4,3,100

So here the arrangement that creates a proportion is

3,4,75,100

Therefore the option b is correct

6 0

3 years ago