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agasfer [191]
3 years ago
15

I really need helpthx

Mathematics
1 answer:
scZoUnD [109]3 years ago
8 0
5) 2*5
     over             which equals 10/40 or 1/4
    5*8

6)8*3=24 
   15*10=150  answer is 24/150

7)2*12=24
  9*13=117   answer 8/39 

8)7*12=84
   8*1=8  answer 8 and 1/2 or 84/8

9)4*5=20
   12*1=12 answer 1and 2/3 or 20/12 

10) 4*4=16
      9*9=81   answer 16/81

11)3*7=21
    14*9=126 answer 1/6

12)8*24=192
     9*11=99 answer 1 and 31/33 or 192/99


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How many sides does a regular polygon have with one central of 18 degrees?
Natalka [10]
All of the centra angles in a regular polygon must add up to 360 degrees. Also, because you're told that it is a regular polygon, the "regular" indicates that all of the central angles will be the same. Divide 360 degrees by 18 degrees to get the number of central angles, which is the same as the number of sides. 360/18 = 20. Therefore, the polygon has 20 sides. Hope that helps!
7 0
2 years ago
In his freshman year, Mario earned a C in algebra, a B in English, an A in science, and a C- in geography. As a sophomore, he ea
Leya [2.2K]

from what I know

A=4

B=3

C=2

and a plus adds 0.33 and a minus minuses 0.33

question wants us to find yearly average or average per 1 year

since these grades span over 2 years, we must divide the total average by 2

averagefresh=sum of fresh grades/4 grades per year

averagesoph=sum of soph grades/4 grades per year

yearlyaverage=(averagefresh+averagesoph)/2


freshman:

(C)+(B)+(A)+(C-)=2+3+4+(2-0.33)=10.67


sophomore:

(B+)+(A-)+(C+)+(B-)=(3+0.33)+(4-0.33)+(2+0.33)+(3-0.33)=12


averagefresh=10.67/4=2.6675

averagesoph=12/4=3

yearlyaverage=(2.6675+3)/2=2.83375

so it's about a B^{-} average

7 0
3 years ago
Identify the x-intercept and the y-intercept of the graph of 6x +15 y=-30
Alex777 [14]

Answer:

y intercept:-45 and x intercept: -45/6

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Help me, please !!!!!
vova2212 [387]

Answer: 100

Hi!

ok so the Pythagorean theorem is

c=\sqrt{x} a^2+b^2=\sqrt{x} 8^2+6^2=10

so the other side is 10.

the square 8 is 8*8

and square 6 is 6*6

so the other square is 10*10=100.

so the area of the blank square is 100.

Step-by-step explanation:

Can I have brainliest?

Thanks!

Have a nice day!

4 0
3 years ago
List the factors of each number 5
tigry1 [53]

The answer to your question is 5 and 1.


Have a nice day :)

7 0
2 years ago
Read 2 more answers
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