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3 years ago

PLZZZZZZZZZZZZZZZZZ HELP!

Mathematics

1 answer:

Svet_ta [14]3 years ago

5 0

answer: -5x+12=20

-12 -12

-5x/-5= 8/-5

x= -1.6

Check: rewrite the orignal problem

plug your variable

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Can anyone please help me?

DerKrebs [107]

Answer:

B. x =1 , y = -5

Step-by-step explanation:

So, what we can do is to simply plug in all of the equations and see which one fits. Equation: x - y = 6

A. x =1 , y = -6

1 -(-6) = 6

1 + 6 = 7

A would be incorrect.

B. x = 1, y = -5

1 - (-5) = 6

1 + 5 = 6

Therefore, B would be correct.

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3 years ago

I need help with the answer.

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In 2010 an item cost $9.00. The price increase by 1.5% each

erma4kov [3.2K]

Answer:

Step-by-step explanation:

Let P be price after t year . From the formula of compounding

P = 9 $(1.015)^t$

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ln P = ln 9 + t ln 1.015

= (2.197 + .0149t )

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3 years ago

Consider the piecewise function shown on the graph, which is composed of three different function types. ----- IMAGE ATTACHED BE

lesantik [10]

Answer:

$Domain = (-\infty,-2)$ --- quadratic function

$Domain = (-2,6)$ --- linear function

$Domain = (6,\infty)$ --- square root function

Step-by-step explanation:

Given

The attached graph

Required

The domain of each function

Starting from the left; the first function is the quadratic function.

The curve of the quadratic function stops at -2 So, the domain is:

$Domain = (-\infty,-2)$

The straight line that starts at -2 and ends at 6 is a linear function.

So, the domain is:

$Domain = (-2,6)$

Lastly, the square root function begins at 6. So, the domain is:

$Domain = (6,\infty)$

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3 years ago