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2 years ago

A salesman earned commission of £2 520 for January. His rate of

Mathematics

1 answer:

Free_Kalibri [48]2 years ago

6 0

Answer:

I'm sorry but I don't know English so I can't help you

Step-by-step explanation:

how do i tell you i don't know english so i can't help you friendy and well, I don't know why it won't let me upload my answer xd

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A group of students are planning a mural at a wall the rectangular wall has dimensions of (6x+7) by (8x+5) and they are planning

zvonat [6]

Answer: $46x^2+73x+15$

Step-by-step explanation:

The area of a rectangle can be calculated with the formula:

$A=lw$

l: the length of the rectangle.

w: the width of the rectangle.

The area of the remaning wall after the mural has been painted, will be the difference of the area of the wall and the area of the mural.

Knowing that the dimensions of the wall are $(6x+7)$ by $(8x+5)$ , its area is:

$A_w=(6x+7)(8x+5)\\\\A_w=48x^2+30x+56x+35\\\\A_w=48x^2+86x+35$

As they are planning that the dimensions of the mural be $(x+4)$ by $(2x+5)$ , its area is:

$A_m=(x+4)(2x+5)\\\\A_m=2x^2+5x+8x+20\\\\A_m=2x^2+13x+20$

Then the area of the remaining wall after the mural has been painted is:

$A_{(remaining)}=A_w-A_m\\\\A_{(remaining)}=48x^2+86x+35-(2x^2+13x+20)\\\\A_{(remaining)}=48x^2+86x+35-2x^2-13x-20\\\\A_{(remaining)}=46x^2+73x+15$

8 0

3 years ago

Express 7. 66 repeating as a ratio of two integers.

OverLord2011 [107]

Method A: 7.6666.... = 7 + 0.6666... = 7 + 2/3 = 21/3 + 2/3 = 23/3

Method B: 10(7.666...) - 1(7.666...) = 76.666... - 7.666... = 69.000...
(10 - 1)(7.666...) = 69
7.666... = 69/9 = 23/3

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2 years ago

Using the figure below, find the lengyh of x.<br><br>

katrin [286]

Answer:

what i don't understand why you are not answer that question

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2 years ago

Which function is a shrink of the exponential growth function shown on the graph?

fgiga [73]

The exponential function shown in the graph is 3^x, so (1/2)3^x is a shrink of it.

Selection B is appropriate.

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2 years ago

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How many times larger is 9×10 to the fourth power than 3×10 to the second power

marin [14]

3 multiplied by ten to the second power

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2 years ago