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Nookie1986 [14]
3 years ago
9

Find the coefficient of x in the expansion of (x+7). Using the triangle.

Mathematics
1 answer:
andrew11 [14]3 years ago
5 0

Answer:

wouldnt it b 1

Step-by-step explanation:

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PLEASE HELP WITH MATH! 100 PTS
timurjin [86]

Answer:

1.) step No.3 x(2x-5) - (2x-5)

2.) 16 +28i-28i - 49i²

but we know i² = -1

the expression becomes

16 + 49

= 66

6 0
3 years ago
Read 2 more answers
In a class of 50 students, everyone has either a pierced nose or a pierced ear. The professor asks everyone with a pierced nose
Tems11 [23]

Answer:  3

Step-by-step explanation:

Let E be the event of that student pierces ear and N be the event of that student pierces nose.

Given: n(E\cup N=50)

n(E)=46\\\\n(N)=7

For any two event A and B, we have

n(A\cup B)=n(A)+n(B)-n(A\cap B)

Similarly , n(E\cup N)=n(E)+n(N)-n(E\cap N)

50=46+7-n(E\cap N)\\\\\Rightarrow\ n(E\cap N)=53-50=3

Hence, 3 students have piercings both on their ears and their noses.

7 0
3 years ago
Which ones arent parrellograms?
MAVERICK [17]

Answer:

Hi, There! I'm Here to help :)

<em>I would Say the 1st Section On the Right Meaning the 1st Block on the right.</em>

<em />

Step-by-step explanation:

A parallelogram is a quadrilateral with opposite sides parallel (and therefore opposite angles equal)

.Few examples of a parallelogram are rhombus, rectangle, and square.

6 0
2 years ago
If a&lt;=b&lt;=c&lt;=d&lt;=e&lt;=110 and the average of a,b,c,d,e is 100 what is the least possible value of a?. . options: 0 ,
VikaD [51]

The least possible value of a would be 60. The correct answer between all the choices given is the fourth choice or letter D. I am hoping that this answer has satisfied your query about and it will be able to help you, and if you’d like, feel free to ask another question.

7 0
3 years ago
Ann took a taxi home from the airport to taxi fare was $2.10 per mile and she gave the driver a tip of five dollars and paid a t
GaryK [48]

Answer:

2.10x+5=49

Step-by-step explanation:

2.10x represents how much she is paying per mile

The five represents the tip she gave the driver

49 represents the total amount she paid

With this information, you can create this equation to solve for the amount of miles.

Hope this helps!

7 0
3 years ago
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