3 years ago

Please help... I don't know what I'm doing.. I will give a thanks and a brainliest to whoever helps!

2 answers:

7 0

A. 3 feet 7 inches is a known value and will not change to anything else.
B. The height of the building is unknown and can be any positive value.
C. 2 o'clock is a known time that will not change.
D. 4 quarts in a gallon is a defined conversion value that will not change.

Allisa [31]3 years ago

6 0

2oclock in The afternoon

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Y = – x – 6 y = x – 4 solve the system of equations using substition. HELP NEEDED IMMEDITLY!!!!!!!!

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Answer:

x=-1 y= -5

Step-by-step explanation:

y = – x – 6

y = x – 4

Substitute into y = -x-6 into the second equation

y =x-4

-x-6 = x-4

Add x to each side

-x-6+x =x-4+x

-6 =2x-4

Add 4 to each side

-6+4 =2x-4+4

-2 = 2x

Divide by 2

-2/2 =2x/2

-1 = x

Now find y

y =-x-6

y = -(-1) -6

y =1-6

y = -5

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Step-by-step explanation:

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Answer:

x=40

Step-by-step explanation:

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3 years ago

The function f(x) = 1.50x – 30 gives the amount of money Amelia has to spend each week for x school lunches, after taking money

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To find the inverse, switch the x and y, and then solve for y (f(x) is the same as y)

So we get:
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