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juin [17]
3 years ago
5

PLEASEEEE HELLLP REALLL ANSWERSSSS two stores both purchase cellphones from the manufacturer for $180 each. store a marks up the

phones 90% while stores b marks up the phone 65% what is the final retail price of the phone from each store??? store A: $ ?? store B: $??​
Mathematics
1 answer:
dexar [7]3 years ago
7 0

Answer:

A: $342 B: $297 easy peasy

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I'm so confused, pls help
Vera_Pavlovna [14]

Answer:

x = 14      D

Step-by-step explanation:

(18x + 36) / 3 = 6x + 12

6x + 12 = -16 + 8x

-6x .                -6x

12 = -16 + 2x

+16 . +16

28 = 2x

/2 .   /2

14 = x

8 0
2 years ago
Please help <br><br>y≥1/3x-3​
zloy xaker [14]

Answer:

B, the one with the line and shaded the top on the right side. (The one that goes to 7 on the x axis).

Step-by-step explanation:

First I find which graph as y -intercept of -3, which is all of them.

Next, I find with graph has a slope of 1/3. (rise 1 run 3). Only B and D has a slope of 1/3 (The ones that has a less steep graph. )

Then, I use the coordinate (0,0) to see which side the graph shades. I plug it into the inequality. (0)≥1/3(0)-3​. Solve. Is 0 greater than -3. YES! so we shade the part where (0,0) is shaded which is B.

6 0
3 years ago
Simplify<br> x + x + y x y?
saw5 [17]

Answer: 2x+y^2

Step-by-step explanation:

x\:+\:x\:+\:y\:\cdot \:y

x+x+yy

2x+yy

2x+y^2

8 0
3 years ago
Read 2 more answers
Find the derivative of StartFraction d Over dx EndFraction Integral from 0 to x cubed e Superscript negative t Baseline font siz
Valentin [98]

Answer: (a) e ^ -3x (b)e^-3x

Step-by-step explanation:

I suggest the equation is:

d/dx[integral (e^-3t) dt

First we integrate e^-3tdt

Integral(e ^ -3t dt) as shown in attachment and then we differentiate the result as shown in the attachment.

(b) to differentiate the integral let x = t, and substitute into the expression.

Therefore dx = dt

Hence, d/dx[integral (e ^-3x dx)] = e^-3x

8 0
3 years ago
Read 2 more answers
14. Determine if the statement is true or false.
Effectus [21]
It depends if x is positive or negative and the same as in y
7 0
3 years ago
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