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ioda
3 years ago
10

How many degrees has been rotated counterclockwise about the origin? A. 90 B. 360 C. 180 D. 270

Mathematics
2 answers:
Vinil7 [7]3 years ago
4 0

Answer:

A - 270°

Step-by-step explanation:

Shkiper50 [21]3 years ago
3 0
It’s been rotated 90 degrees so A
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On a 3-week vacation to Paris, Martha's expenses for food, gifts, and accommodations was 80$ less than 3 times her airfare. If t
Nady [450]
Martha’s airfare is$2410
5 0
3 years ago
Which of the following shows the extraneous solution(s) to the logarithmic equation? log4 (x) + log4(x - 3) = log4 (-7x + 21)
Salsk061 [2.6K]
First join the log4 on the left:

log4( x*(x-3) = log4(-7x+21)

Then x = -7, works: -7*(-10)=70 = -7*(-7)+21

x=-3, 18 = 42, does not work

x=3 0=0 works,

However, when one puts x = -7 in the *original* exression, log4(-7) or log4(-10) do not exist (you know why?). So x= -7 is extraneous.

Now x=3 gives log4(0) on the left and right, which does not exist.

So, C is the answer, both are extraneous. Seem to work but indeed don't work in the *original* equation
 
6 0
3 years ago
Read 2 more answers
If 23 people shake each others hands once how many hands are shook in all
AURORKA [14]
This is the number of combinations of 2 from 23
 23C2   = 23! / 2! 21!

A quick way to do this   is  23*22 / 2   =   253
7 0
3 years ago
Four more than the quotient of a number and 3 is 9
barxatty [35]

The algebraic expression of "Four more than the quotient of a number and 3 is 9" is \frac{x}{3}+4=9

The value of x=15

Step-by-step explanation:

We need to express "Four more than the quotient of a number and 3 is 9" as algebraic expression.

Let the number = x

Solving:

quotient of a number and 3: \frac{x}{3}

Four more than the quotient of a number and 3: \frac{x}{3}+4

Four more than the quotient of a number and 3 is 9: \frac{x}{3}+4=9

Now, finding value of x:

\frac{x}{3}+4=9\\Adding\,\,-4\,\,on\,\,both\,\,sides:\\\frac{x}{3}+4-4=9-4\\\frac{x}{3}=5\\Multiply\,\,both\,\,sides\,\,by\,\,3:\\x=5*3\\x=15

So, value of x = 15

Keywords: Algebraic expression

Learn more about algebraic expression at:

  • brainly.com/question/1600376
  • brainly.com/question/1617787
  • brainly.com/question/9720317

#learnwithBrainly

4 0
3 years ago
The figure shows the dimensions of the side of a house. Find the area of the side of the house.
vladimir1956 [14]

Answer:

Answer is 75cm squared.

Step-by-step explanation:

10x15 = 150

divide by 2

final answer is 75.

6 0
3 years ago
Read 2 more answers
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