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madam [21]
3 years ago
6

I need to find the total area of the rectangles

Mathematics
1 answer:
Shalnov [3]3 years ago
8 0
10 x 9 = 90
8 x 7 = 56
90 + 56 = 146
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Completely factorize (2x+3)^-2 + 2x(2x+3)^-3
Alexxx [7]
Hello,

\dfrac{1}{(2x+3)^2} + \dfrac{2x}{(2x+3)^3} \\

= \dfrac{(2x+3)+2x}{(2x+3)^3}\\

= \dfrac{4x+3}{(2x+3)^3}
4 0
2 years ago
Welcome to Gboard clipboard, any text you copy will be saved here.​
Dafna11 [192]

Answer:

yooo i got the new rank im now expert :0

Step-by-step explanation:

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4 0
2 years ago
At a bake sale for every 8 cupcakes sold you earn 5.00. If u made 45 how many cupcakes did you sell?
grandymaker [24]
45 divided by 5 is 9 and 9 times 8 is 72 so the answer is 72.
3 0
3 years ago
A store owner is interested in opening a second shop. She wants to estimate the true average daily revenue of her current shop t
Alex
Every confidence interval has associated z value. As confidence interval increases so do the z value associated with it. 
The confidence interval can be calculated using following formula:
\overline{x} \pm \frac{zs}{\sqrt n}
Where \overline{x} is the mean value, z is the associated z value, s is the standard deviation and n is the number of samples.
We know that standard deviation is simply a square root of variance:
s=\sqrt{315900.20}=\$562.05
The confidence interval of 95% has associated z value of <span>1.960.
</span>Now we can calculate the confidence interval for our income:
3472.00\pm \frac{1.960\cdot 562.05}{\sqrt{60}}\\ \$3472.00\pm142.22


6 0
3 years ago
I need some help with binomial theorems. can anyone help solve this?
Svetlanka [38]
Use Pascal's Triangle

1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1
1 9 36 84 126 126 84 36 9 1 (this is the row you use)

So, the seventh term of (3x + 2y)^9 will be 84xy
8 0
3 years ago
Read 2 more answers
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