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timofeeve [1]
4 years ago
10

If Gabby wants to make an octagon with a side length of 20 inches using a wire how much wire does she need

Mathematics
1 answer:
Dennis_Churaev [7]4 years ago
4 0
A octagon has 8 sides  and one side is = 20inches ,so 20*8 is  equal to 160  so all the sides together is 160 inches
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What is the result of subtracting the second equation from the first?
Ronch [10]

Answer:

-5x + 0y = -11

The y terms are eliminated

Step-by-step explanation:

- 4x – 2y = -2

X - 2y = 9

We want to subtract the second equation from the first

Distribute a minus sign to all the terms in the second equation

- 4x – 2y = -2  

X - 2y = 9

= (-5x + 0y = -11)

6 0
3 years ago
HELPPP !! LOOK AT PICTURE
WINSTONCH [101]

Answer:

A) (-infinity,-2] and D) [0,2]

Step-by-step explanation:

7 0
3 years ago
If a number is chosen at random from the set {1, 2, 3, 4, . . ., 18}, what is the probability that the number chosen is a factor
choli [55]
Looking at the set, we are given 18 elements. 17 is prime; it has only two factors: 1 and 17, since 1•17=17. So, the question is really asking what is the probability the numbers 1 or 17 is chosen. As mentioned earlier, 17 is prime, so there are two possible choices: 1 and 17.

P (probability) = possible outcomes / total outcomes

It is important to note that these events are “or” events, meaning that the probability can only be determined by choosing a 1 or a 17; you can’t randomly chose a 1 and 17 at the same time. So, the formula is:

P(A or B) = P(A) + P(B)

All this is saying is that given two possible outcomes, the probability occurs independent of each event; they don’t occur at the same time.

P(1 or 17) = P(1)/18 + P(1)/18

P(1 or 17) = 2/18

Since 17 is prime, it’s two and only factors are 1 and 17. The probability of randomly choosing a 1 or 17 is 2/18, meaning that there are 2 elements in the set out of a possible 18 elements that can be randomly chosen.

2/18 simplifies to 1/9


So, your answer is 1/9
5 0
2 years ago
(40 points) I need some help please. An answer definition is appreciated as well.
ExtremeBDS [4]

Answer:

-9

Step-by-step explanation:

We are summing the 3rd 4th and 5th terms because k goes from 3 to 5

The third term is

-2(3) +5 = -6+5 = -1

The fourth term is

-2(4) + 5 = -8+5 = -3

The fifth term is

-2(5) +5 = -10 +5 = -5

Add these 3 terms together

-1+-3+-5 = -9

7 0
3 years ago
Read 2 more answers
51.8 + (-0.8) i dont like how you suposse to have20 letters
Marizza181 [45]

Answer:

51

Step-by-step explanation:

51.8-0.8=51

8 0
3 years ago
Read 2 more answers
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