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Katen [24]
3 years ago
7

Which number line would not describe a situation where the midpoint between points A and B is 2 1/2?

Mathematics
2 answers:
andre [41]3 years ago
8 0
Answer: (-4, 8)

Options (A, B):
1. (2, 3)
2. (-4, 9)
3. (-4, 8)
4. (-0.75, 5.75)
inessss [21]3 years ago
4 0

Answer:

Option C

Step-by-step explanation:

We know that in a number line numbers all (rational preferably) would be marked on a line in a chronological order.

Mid point of A and B would be the average value of A and B.

Here given that mid point is 2 1/2

This implies average of A and B is 2 1/2

Or total of A and B should be 5

Out of 4 options let us check which gives total 5.

A) (2,3) .. Total is 5

B) (-4,9)..Total is again 5

C) (-4,8)..Total is not 5 but 4

D) (-0.75, 5,75) .. Total is 5

So out of these 4 options only C would not describe a situation where the midpoint between points A and B is 2 1/2

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Karo-lina-s [1.5K]

Answer:

a is 60 b is 48

Step-by-step explanation:and i will get the rest to you when i am done

5 0
3 years ago
Solve the following system: <br> 3x + 2y = 7 <br> -4.5x - 3y = -10.5
valentina_108 [34]

Answer:

<u>infinitely many solutions</u>

Step-by-step explanation:

The system of equations :

  1. 3x + 2y = 7
  2. -4.5x - 3y = -10.5

Multiplying Equation 1 times 3 and Equation 2 times 2 :

  • 9x + 6y = 21
  • -9x - 6y = -21

Putting the equations in standard form after simplifying :

  1. 6y = -9x + 21 ⇒ <u>y = -1.5x + 3.5</u>
  2. -6y = 9x - 21 ⇒ <u>y = -1.5x + 3.5</u>

<u />

As both equations are the same, the system will have <u>infinitely many solutions</u>.

4 0
2 years ago
The sum of the angle measures of a polygon with n sides is 1260. find n.
Murrr4er [49]
Knowing the interior angle sum formula is; 

180x(n-2)

180x(n-2)=1260 (solve for n here) 
180n-360=1260 
180n=1260+360
180n=1620 
n=1620/180 
n=9

Therefore, this polygon has 9 sides.

Hope I helped :) 
4 0
3 years ago
Which expression represents 8 less than 3 times a number?<br><br> 3n-8<br> 8-3n<br> 3-8n<br> 3-8
TEA [102]

Answer:

I'm pretty sure its b but I'm not sure I'm sorry if it's wrong

4 0
2 years ago
Read 2 more answers
Create an equivalent expression by simplifying the expression below.
BabaBlast [244]

Answer:

see explanation

Step-by-step explanation:

Given

- \frac{1}{2} [ - \frac{3}{2} c + 6c + 1 ] - 3c

Distribute the square bracket by - \frac{1}{2}

= \frac{3}{4} c - 3c - \frac{1}{2} - 3c ← combine like terms

= \frac{3}{4} c - 6c - \frac{1}{2}

= \frac{3}{4} c - \frac{24}{4} c - \frac{1}{2}

= - \frac{21}{4} c - \frac{1}{2}

6 0
3 years ago
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