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bekas [8.4K]
3 years ago
11

Show your work please

Mathematics
1 answer:
maria [59]3 years ago
8 0
1) would be 2 boxes because the room is 25 ft²
2) $99.50 if you do 25 x 3.98, or if they want 40 x 3.98 it would be $159.20
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Please help look at the picture
k0ka [10]

Answer:

y = - 5x - 1

Step-by-step explanation:

The first thing to do (always) is pay attention to x =0. That at least gives you a partial answer. y = y' - 1. when you put 0 in for whatever y' is you get 0. What about the other numbers? How did they come about.

We have another clue. Whenever you put in a positive number for x, you get a negative answer for y. That's interesting. So y' has a minus sign associated with it.

y = -ax - 1    Make a>0 so there is only 1 minus sign. x cannot have an even power, because an even power would make everything positive except the -1.  

So we'll start with y= - ax - 1 We'll also make the assumption that a = 1

y = - x - 1 That won't work. a >1 otherwise x = 2 won't give - 11

y = -ax - 1

let x = 2

let y = - 11 Solve for a

y = - ax - 1

- 11 = -a*-2 - 1       add   1  to both sides

-11 + 1 = - a(-2) - 1 + 1

- 10 = -2a             Divide by - 2

- 10/-2 = -2a/-2

a = 5

Answer: y = - 5x - 1

8 0
2 years ago
Sonia's check at Aubrey's Kitchen is $14.25. In order to leave a 10% tip, how much should she pay? Round to the nearest cent.
Sidana [21]

Answer:

Nearest cent- $1.43

Step-by-step explanation:

14.25x0.10=1.425

7 0
2 years ago
Aaron made a picture frame with the dimensions shown in the figure. What is the area of the picture frame? 120 square centimeter
Temka [501]
72 square centimeters because 
<span>(12×10)−(8×6)</span>
<span>120−48</span>
<span>72</span>
7 0
3 years ago
Read 2 more answers
X/x+2 = 4/5. Solve for x.
gregori [183]
<span>X/x+2 = 4/5

5x = 4x + 8

5x - 4x = 8

x= 8


</span>
4 0
2 years ago
Read 2 more answers
Factor this trinomial completely.
zmey [24]
First you want to write 7x as a sum or difference: 15x-8x
Now, the expression would look like this: 10x^2+15x-8x-12
Next, factor out the 5x and -4 from the expression: 5x(2x+3)-4(2x+3)
Now, factor out the 2x+3 from the expression and you have your answer:
(2x+3)(5x-4)
4 0
3 years ago
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