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borishaifa [10]
3 years ago
14

What is the side length of an equilateral triangle that has a perimeter of 24.6 cm ?

Mathematics
1 answer:
stepan [7]3 years ago
4 0
The length of an equilateral triangle is C. 8.2 cm
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F(x) = { -2x -1, x ≤ 2
Degger [83]

Answer:

Use the appropriate entry method for piecewise functions for the graphing calculator of interest.

Step-by-step explanation:

For Desmos, the entry looks like ...

f(x) = {x ≤ 2: -2x-1,-x+4}

_____

For a TI-84 calculator, the entry may look like ...

Y₁ = (-2X–1)(X≤2) + (-X+4)(X>2)

The symbols ≤ and > come from the TEST menu, which is the (2nd) shift of the MATH key.

Note that the function is the sum of the pieces, each piece multiplied by a test. For something like 0≤x<2, the multiplier would be a pair of tests:

... (0≤X)(X<2)

8 0
3 years ago
Find Y of the polygon
Deffense [45]
I that 'y' is 45 degrees because of alternate angles (I think its called).

If you look at the large triangle on the left where the corner angles are 35 and 80 and 20+an unknown angle. We can work out the missing angle by doing 180-80-35-20= 45. 

And so if we use the fact that alternate angle must be equal then y= 45 degrees (I think!)

7 0
3 years ago
Read 2 more answers
A zoo train ride costs $3 per adult and $1 per child. On a certain day, the total number of adults (a) and children (c) who took
PIT_PIT [208]
A=adult
c=children
total lumber=30
total number=adults+children
a+c=30

total cost=50
total cost=acost+ccost

acost=a times cost per adult=a times 3=3a
ccost=c times cost per child=c tiems 1=1c=c
total cost=3a+c
50=3a+c

equiaotn are
a+c=30
3a+c=50
multiplyu first by -1 and add
3a-a+c-c=50-30
2a=20
a=10
sub
10+c=30
c=20

answer is A
4 0
3 years ago
Read 2 more answers
I need help with a perimeter problem
adelina 88 [10]
What is the permiter problems first?? all you need to do to find perimeter is multiply the length by the width
6 0
3 years ago
Wich fraction can be replaced with one half when estemating fraction
s2008m [1.1K]
<span>Wich fraction can be replaced with one half when estemating fraction

Example
</span>\dfrac{3}{4}* half=   \dfrac{3}{4}*  \dfrac{1}{2}=  \dfrac{3*1}{4*2}= \boxed{ \frac{3}{8} }<span>
</span>
4 0
3 years ago
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