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horrorfan [7]
3 years ago
8

PLEASE HELP IM BEGGING YOU PLEASEEE THABK U SO MUCH

Mathematics
2 answers:
k0ka [10]3 years ago
8 0

Step-by-step explanation:

not sure for the answer but take how many triangles there are if they are all same same size then use this equation x÷t=a x is 360° t is how many triangles in the octagon and a is ur answer

Lemur [1.5K]3 years ago
5 0
Angle a Central angles are 22.5 degrees. 360 divided by 16

Angle b 180-(90+22.5) = 67.5 degrees
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Show that the equation x^3+6x-5=0 has a solution between x=0 and x=1
Mnenie [13.5K]

Answer:

Since the value of f(0) is negative and the value of f(1) is positive, then there is at least one value of x between 0 and 1 for which f(x) =0.

Step-by-step explanation:

The equation f(x) given is:

f(x) = x^3+6x-5

For x = 0. the value of the expression is:

f(0) = 0^3+0-5\\f(0) = -5

For x = 1, the value of the expression is:

f(1) = 1^3+6-5\\f(1)=2

Since the value of f(0) is negative and the value of f(1) is positive, then there is at least one value of x between 0 and 1 for which f(x) =0.

In other words, there is at least one solution for the equation between x=0 and x=1.

6 0
2 years ago
A line passes through (−1, 5) and (1, 3)
ikadub [295]
I hope this helps you

8 0
3 years ago
The sum of 237 and six times the opposite of a number is 405. What is the number?
IgorC [24]
The number is 28.

The equation would be:

237 + 6(x) = 405

The problem states that 6 times the opposite of a number, however, since the number sign was not given, we do not know whether it is in a positive or negative form. So we leave it as only x.

237 +  6x = 405
6x = 405 - 237
6x = 168
6x / 6 = 168 / 6
x = 28

To check:

237 + 6 (28) = 405
237 + 168 = 405
405 = 405
8 0
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Step-by-step explanation:

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