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Levart [38]
3 years ago
14

How many lines of symmetry does a decagon have...? A.0 B.5 C.10 D.20

Mathematics
2 answers:
liraira [26]3 years ago
8 0
The answer is C or 10
andreyandreev [35.5K]3 years ago
8 0
The answer is C, 10. 

Have a great day! :)
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What is the answer for 7x minus x
larisa86 [58]
\bf{7x-x}

We can take out x as a factor

\bf{x(7-1}

What is 7-1=?

6 !

So then that means

\bf{x(6)=6x}

So your final answer is

\boxed{\bf{6x}}
8 0
3 years ago
Read 2 more answers
Please help! This is due in less that 10 minutes! (Will mark Brainliest!)
Svetradugi [14.3K]

Answer:

<em>Answer: a = - 12</em>

Step-by-step explanation:

We have here two equations, one 18x + 12y = 36, the other ax - 8y = - 24;

Now if we were to consider making these two equations have a common y co - efficient, we would multiply the top equation by 2, the bottom consecutively by - 3. This would make a standard 24y ;

2 * ( 18x + 12y = 36 ),     ⇒       36x + 24y = 72

+ - 3 * (  ax - 8y = - 24 )            + - 3ax + 24y = 72

As you can see, all terms are equivalent, besides that of the co - efficient of x. Knowing that, it would be ax must be multiplied by - 3 to receive 36x, as the bottom equation is multiplied by - 3, where all terms are equivalent to the top terms;

- 3 * ax ⇒ 36x, - 3 * - 12x = 36x,

<em>Answer: a = - 12</em>

8 0
3 years ago
Joshua’s computer loan statement said he would pay $1,244.34 in simple interest for a three-year loan at 12.4%. How much did Jos
rusak2 [61]

Answer: Josh borrowed $ 876  to buy the computer.

Step-by-step explanation:

Formula for simple interest : I = Prt

, where P = principal amount

r= rate of interest ( in decimal)

t=time (in years)

Total amount with simple interest to pay : A = P+I

⇒ A = P +Prt

⇒ A = P(1 +rt)         (i)

As per given , A = $1,244.34

r= 12.4% = 0.124

t= 3 years

Now, put these values in (i) , we get

1244.34=P(1+0.124)^3\\\\\Rightarrow\ 1244.34=P(1.124)^3\\\\\Rightarrow\ 1244.34=P(1.420034624)\\\\\Rightarrow\ P=\dfrac{1244.34}{1.420034624}\\\\\Rightarrow\ P=876.27

Hence, Josh borrowed $ 876  to buy the computer.

4 0
2 years ago
The diameter of the circle above is 34 in. What is the circumference of the circle?
gavmur [86]
Circumference formula is πd

C = (3.14)(34)
C = 106.76

Hope this helps :)
3 0
3 years ago
A robot can complete 8 tasks in 5\6 hors what is the unit rate per task
mars1129 [50]

The robot can complete 9 and 3/5 of a task per hour. 
8 0
2 years ago
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