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yanalaym [24]
3 years ago
14

Identify the value of a

Mathematics
1 answer:
Amanda [17]3 years ago
4 0
Use exponential law, we have

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What is 1/4+3/8+1/2+5/8+7/8
Vadim26 [7]

Answer:

2⅝

Step-by-step explanation:

You must convert each fraction to a <em>common denominator</em>.

The <em>least common multiple</em> of 2, 4, and 8 is 8.

  1/4  +3/8  + 1/2  + 5/8 + 7/8     Convert to a common denominator

= 2/8 + 3/8 + 4/8 + 5/8 + 7/8

= (2   + 3     + 4    + 5     + 7)/8

= 21/8                                        Convert to a mixed number

= (16 + 5)/8

=  2  +  ⅝

= 2⅝  

6 0
3 years ago
please someone help with this question we are doing angle properties in polygons and I can't figure out b) i will give brainest
labwork [276]

 Answer:

a)  a = 60°  b = 60°   c = 120°  d = 60°

b)  a = 140°   b = 20°  c = 60°    d = 60°

Step-by-step explanation:

a)   Sum of the angles of a hexagon = (6 - 2)180 = 720

Since the hexagon is regular, c = 720/6 = 120

a and c are supplementary, so a = 180 - 120 = 60

d = 120/2 = 60

b)  

sum of the angles of a nonagon = (9 - 2)180 = 1260

a = 1260/9 = 140

140 + 2b = 180

         2b = 40

           b = 20

c = 60  and d = 60  (This is really difficult to explain with the vertices being labeled)

7 0
2 years ago
Simplify the following expression,<br><br> 2(k - 9) + 12
Phoenix [80]

Answer:

2k - 6

Step-by-step explanation:

Distribute:

2k - 18 + 12

Add:

2k - 6

8 0
3 years ago
Solve the equation (y x y or y squared) y^2 –9y + 14 = 0
stepladder [879]
What 2 numbers multiply to 14 and add to -9?
-7 and -2
(y-7)(y-2)=0
set to zero

y-7=0
y=7

y-2=0
y=2

y=2 or 7
6 0
3 years ago
three of four numbers have a sum of 22. if the average of the four numbers is 8, what is the fourth number?
MakcuM [25]
The 4th number is 10, since you need to add 10 to get 32 so that when you divide by 4 you get 8
4 0
3 years ago
Read 2 more answers
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