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Lerok [7]
2 years ago
15

Find value of x please

Mathematics
1 answer:
Vera_Pavlovna [14]2 years ago
4 0

Answer:

144º

Step-by-step explanation:

In a octagon there are 8 total sides. And the angles added up all together should equal 1080º.

136 + 132 + 129 + 116 + 158 + 141 + 124 = 936

1080 - 936 = 144

x = 144º

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What is the volume of a rectangular prism with the dimensions: base 7 2 cm, height 3 2 cm, and length 9 2 cm?
noname [10]

Answer:

Step-by-step explanation:

first do 72times2,32times2,92times2,  then add them all

5 0
3 years ago
six times the sum of a number and 3 is 12 less than 12 times the number .Write and solve an equation to fine the number
Aloiza [94]

6 (x+3)=12x-12

6x+18=12x-12

6x-12x=-18-12

-6x=-30

x=5

4 0
3 years ago
Determine the value of K that would make this expression a perfect square
Mumz [18]

Answer: k=9/4

Step-by-step explanation: We can do this by finding a number that adds up to 3 when multiplied by 2. The best way to do this is to use ((b^2)/4) which can usually find you the number for a perfect square based on b, which we have. So, 3^2 / 4 =9/4, meaning k=9/4. We can check:

>x^2 +3x +9/4

> (x+3/2)(x+3/2)

Perfect square.

4 0
3 years ago
Will someone please go answer my other question??!!‍♀️
abruzzese [7]
The answer to your question is YES!
4 0
3 years ago
B) Your local shoe store anticipated giving away 2,500 pairs of shoes in one month, but they only sold 2,215 pairs of shoes. Wha
vampirchik [111]

Answer:

Approximate percent error = 15%

Step-by-Step Explanation:

Let the percentage of error be "e"

Anticipated sales = 2,500

Actual sales = 2,125

The percentage error "e" can be calculated as per the equation below:

2500*(1-e) = 2125

(1-e) = 2125/2500

1-e = 0.85

e = 1-0.85

e = 0.15

e = 15%

Approximate percentage error = 15%

6 0
3 years ago
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