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LiRa [457]
3 years ago
8

Evaluate 28/a + 6 when a = 7. 28/a + 6 = Help plsss

Mathematics
1 answer:
koban [17]3 years ago
6 0
This is your answer

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A regular octagon with side length a cm can be made by cutting off
Ksivusya [100]

Answer:

one side = \frac{a\sqrt{2}}{2}

Step-by-step explanation:

if you draw an octagon on a piece of paper, you can draw a square around it, you should be able to see a diagram of this attached, ignore the 6.

Let's say TP = a

since it's a regular octagon, TP = HT

and using the Pythagoras Theorem,  we know a² + b² = c² and thus:

√(AT² + HA²) = HT

and since AT = HA which we will call x, the equation becomes:

√(2x²) = HT = a

rearrange the equation to solve for x and you get:

2x² = a²

x² = \frac{a^{2} }{2}

x = \frac{a}{\sqrt{2}}

which, if you rationalise the denominator, you get:

x = \frac{a\sqrt{2}}{2}

5 0
3 years ago
HELP PLEASE!!!!!!!!!!!!
sleet_krkn [62]

Answer:

7 and 14

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Ashton answer this what is 8x8
yaroslaw [1]

Answer:

64

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Trigonometry
Alla [95]

90° is equal to  \frac{\pi}{2} or 1.5707 radians.

Step-by-step explanation:

Step 1:

If an angle is represented in degrees, it will be of the form x°.  

If an angle is represented in radians, it will be of the form \frac{\pi}{x} radians.

To convert degrees to radians, we multiply the degree measure by \frac{\pi}{180}.

For the conversion of degrees to radians,

the degrees in radians = (given value in degrees)(\frac{\pi}{180}).

Step 2:

To convert 90°,

90 (\frac{\pi}{180} ) = \frac{\pi}{2}.

0.5 \pi = 1.5707 radians.

So 90° is equal to \frac{\pi}{2} or 1.5707 radians.

3 0
4 years ago
HELP WHAT EQUATION MATCHES THE GRAPH? PLEASE HELP ME​
Alexandra [31]

Step-by-step explanation:

I think no. c is correct

if it helps you then plzz mark me brainliest

8 0
3 years ago
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