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nlexa [21]
3 years ago
5

How much sides do a octagon has

Mathematics
2 answers:
fiasKO [112]3 years ago
5 0
Octo means eight, so an octagon has 8 sides.

Always look to the prefix for the number of sides...

Tri = 3
quad = 4
penta = 5
hexa = 6
hepta = 7
octo = 8
nona = 9
deca = 10
babymother [125]3 years ago
4 0
Eight sides and angles too
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What is the value of x?
olga_2 [115]

Answer:

<x = 20°

Step-by-step explanation:

<x = 1/2(arc UT - arc SV)

<x = 1/2(65° - 25°)

<x = 1/2 (40°)

<x = 20°

3 0
3 years ago
If you spend $8 dollars every school day on fast food. How much money would you spend in 1 school year
Nadya [2.5K]
8 * 5 = 40

40 * 4 = 160

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6 0
3 years ago
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PLEASE HELP ASAP ILL GIVE BRAINLIEST!!
8_murik_8 [283]

Answer:

A

Step-by-step explanation:

We can see that the -5 means that we move 5 unites down

Only A has this option

4 0
3 years ago
Find f(g(x)). State the domain of the composite function.<br> f(x) = 3x-2/x+1<br> g(x) = x+5/2x-3
AnnyKZ [126]

Answer:

ℝ - {(-2/3),(3/2)}

Step-by-step explanation:

We want the domain of f(g(x)). So, firstly, we have to find the domain for g(x) and, then, for f(g(x)).

- Domain of g(x): Since the expression is a fracion, we must exclude the values of x that make null the denominator. Hence,

g(x)=\dfrac{x+5}{2x-3}\Longrightarrow 2x-3\neq 0\iff \boxed{x\neq\dfrac{3}{2}}

- Domain of f(g(x)): We'll find its expression:

f(x) = \dfrac{3x-2}{x+1}\\\\f(g(x)) = \dfrac{3g(x)-2}{g(x)+1}\\\\f(g(x)) = \dfrac{3\cdot\dfrac{x+5}{2x-3}-2}{\dfrac{x+5}{2x-3}+1}=\dfrac{~~~\dfrac{3(x+5)-2(2x-3)}{2x-3}~~~}{\dfrac{(x+5)+(2x-3)}{2x-3}}\\\\f(g(x)) =\dfrac{3(x+5)-2(2x-3)}{(x+5)+(2x-3)}=\dfrac{3x+15-4x+6}{x+5+2x-3}\\\\\boxed{f(g(x)) =\dfrac{21-x}{3x+2}}

Now, once again, we have to exclude the values of x that make the denominator equals to zero. Thus,

f(g(x)) =\dfrac{21-x}{3x+2}\Longrightarrow 3x+2\neq0\iff \boxed{x\neq-\dfrac{2}{3}}

Lastly, we may write the domanin of f(g(x)):

D(f(g(x)) = \left]-\infty,-\dfrac{2}{3}\right[\cup\left]-\dfrac{2}{3},\dfrac{3}{2}\right[\cup\left]\dfrac{3}{2},\infty\right[

or, just writing in a shorter way:

\boxed{D(f(g(x)) = \mathbb{R}-\left\{-\dfrac{2}{3},\dfrac{3}{2}\right\}}

7 0
2 years ago
Zoe and Hannah share tips in the ratio 3:7 . Last week Zoe received £24 . How much did Hannah receive last week?
Anna35 [415]

Answer:

56 euros

Step-by-step explanation:

3=24

7=x

7 x 24=56

6 0
3 years ago
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