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Valentin [98]
3 years ago
15

:()))()()((;(;((()))))))))))))))))))

Mathematics
2 answers:
kupik [55]3 years ago
8 0
6. a + 14
7. 10x
8. 3m+3n
leonid [27]3 years ago
8 0

Answer: 1. 2a+14

               2.10x

              3.3m+3n

Step-by-step explanation: Hope this helps!

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Nita uses 1/2 of a class period to read 1/12 of a book. How many periods must be set aside if she is to read the entire book?
strojnjashka [21]

Answer: 6 class periods

Step-by-step explanation: If she reads 1/12 of the book and 1/12 times 12 is equal to 1 then it will take 12 classes

hope this helps mark me brainliest if you can

3 0
3 years ago
Read 2 more answers
I really need help with this.
aniked [119]

9514 1404 393

Answer:

  a.  (1.4, 2.6)

  b.  (3, 2)

Step-by-step explanation:

a. The circumcenter is the intersection point of the perpendicular bisectors of the sides of the triangle.

For points X(a, b) and Y(c, d), the perpendicular bisector of XY can be written as ...

  (c -a)(x -(c+a)/2) +(d -b)(y -(d+b)/2) = 0

Then the equation of the perpendicular bisector of MN is ...

  (-2-4)(x -(-2+4)/2) +(4-0)(y -(4+0)/2) = 0

  -6(x -1) +4(y -2) = 0

  3x -2y = -1 . . . .  divide by -2 and put in standard form

Similarly, the perpendicular bisector of NO is ...

  (0-(-2))(x -(0-2)/2) +(6 -4)(y -(6+4)/2) = 0

  2(x +1) +2(y -5) = 0

   x + y = 4 . . . . divide by 2 and put in standard form

So, the point of intersection is ...

  (3x -2y) +2(x +y) = (-1) +2(4) . . . . . add twice the 2nd equation to the 1st

  5x = 7 . . . . . . simplify

  x = 1.4 . . . . . . divide by 5

  y = 4-1.4 = 2.6 . . . . . find y from the second equation

The coordinates of the circumcenter are (1.4, 2.6).

__

b. The centroid is the average of the vertex coordinates.

  centroid = (A +B +C)/3 = ((1, 2) +(3, 4) +(5, 0))/3 = (1+3+5, 2+4+0)/3 = (9, 6)/3

  centroid = (3, 2)

3 0
3 years ago
1cm represents 5.4miles on a scale drawing, what distance does 17.1cm on the scale drawing represent in real life.
patriot [66]

Answer:

0.00011

Step-by-step explanation:

5 0
3 years ago
A study concludes that 15 percent of all college students attend a gym class. Which of the following statements is true? 15 perc
yanalaym [24]
I think it is 15 percent is a statistic.
I am not 100% sure if it is right or not but I hope it helps!
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10 cm<br>12 cm find area each shaded area​
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Do u have a diagram to show
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