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liraira [26]
3 years ago
5

F9

Mathematics
1 answer:
viktelen [127]3 years ago
8 0

Answer:

just crop it ok

Step-by-step explanation:

I'm not sure ok

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The coefficient of the second term in the expansion of the binomial (4x+3y) to the 3rd power
kaheart [24]
You can solve this easily by using Pascal's Triangle (look that up if need be).

Here are the first four rows of P. Triangle:

                 1
           1           1
     1          2          1
1        3            3       1
 
 example:  expand (a+b)^3.
 
 Look at the 4th row.  Borrow and use those coefficients:
 
 1a^3 + 3 a^2b + 3ab^2  + b^3

Now expand (4x+3y)^3:

1(4x)^3 + 3(4x)^2(3y)  + 3(4x)*(3y)^2 + (3y)^3

Look at the 2nd term (above):

              3(4x)^2(3y)   can be re-written as 144x^2y.
 
The coeff of the 2nd term is 144.  Note that (4)^2 = 16    
3 0
3 years ago
Find the area of the trapezoid.
Aliun [14]
The area equation is A=\frac{a+b}{2} *h

the trapezoid is actually on its side
so a=10.2
b=12.2
h=12.6

A=\frac{10.2+12.2}{2} *12.6\\
=\frac{22.4}{2} *12.6\\
=11.2*12.6\\
=141.12\\
3 0
4 years ago
According to a study conducted by an​ organization, the proportion of Americans who were afraid to fly in 2006 was 0.10. A rando
jeyben [28]

Answer:

Event is not unusual(p>0.05).

Step-by-step explanation:

Given that :

p=0.10\\\\n=1100\\\\x=121

#The sample proportion is calculated as:

\hat p=\frac{x}{n}\\\\=\frac{121}{1100}\\\\=0.1100

#Mathematically, the z-value is the value decreased by the mean then divided  the standard deviation :

z=\frac{\hat p- p}{\sqrt{\frac{p(1-p)}{n}}}\\\\\\\\=\frac{0.11-0.10}{\sqrt{\frac{0.10(1-0.10)}{1100}}}\\\\\\=1.1055

#We use the normal probability table to determine the corresponding probability;

P(X\geq 121)=P(Z>1.1055)\\\\=0.1314

Hence, the probaility is more than 0.05, thus the event not unusual  and thus  this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased.

8 0
3 years ago
WILL MAKE BRAINLIEST! ANSWER AND ILY<br><br> what are the slopes of each line?
Crazy boy [7]

Answer:

Top left is A

Top right is B

Bottom left is D

Bottom right is A

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
PLESSE HELPP I NEED HELPPP ASAPPPPPPPP
Akimi4 [234]
D. (2,3)

Explanation:

We already know that x=2, so of we plug in 2 for x, we should get the y value.

Once we plug in 2 for x we should get the equation:

2(2)+3y=13.

Simplify that and we get:

4+3y=13.

Subtract 4 from both sides and we get:

3y=9.

Divide both sides by 3 and we get:

y=3.

This means that your ordered pair should be (2,3).

Hope this helps :)
4 0
3 years ago
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