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arsen [322]
2 years ago
7

Find the area of triangle ABC (I’ll give you the branliest answer if correct) :)

Mathematics
1 answer:
Dmitriy789 [7]2 years ago
5 0

I can't see pictures T^T.

To find the are of a triangle, you multiply the dimensions as you would a rectangle, but divide the product by 2.

Example:

The dimensions of triangle B are 4 and 9.

4x9=36

Now divide.

36/2=18

So the area of triangle B is 18.

---

hope it helps

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If y=14 when x=20, find x when y=3.5
Kruka [31]
I hope this helps you





when y=14 x=20


y=3,5 x=?



?.14=20.3,5


?=20.3,5/14


?=5
7 0
2 years ago
Find the vertex of the quadratic function: y= 2x^2 - 12x + 9
masha68 [24]

Answer:

6+_3√2/2

Step-by-step explanation:

y=2x²-12x+9

y=6+3√2/2

4 0
3 years ago
Brock spent $20 at the arcade. This represents 10% of the money earned by working at the pizza parlor last week. How much money
marusya05 [52]
The answer will be $200
7 0
2 years ago
How do you model .7 on a number line
Rasek [7]

Answer:

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3 0
3 years ago
Read 2 more answers
A farmer has 1,200 feet of fencing and wants to fence off a rectangular field that borders a straight river. He needs no fence a
iVinArrow [24]
Yay, derivitives
I'mma ignore that x is the shorter side because I don't know which one has to be shorter yet


we need to find the max area
but with 3 sides

area=LW
let's say the sides are z and y
zy=area

and the relatiionship between them is
hmm,
z+2y=1200
because one side has no fencing
so
z+2y=1200
solve for z
z=1200-2y
sub for z in other

(1200-2y)(y)=area
expand
1200y-2y²=area
take derivitive
1200-4y=dy/dx area
max is where dy/dx goes from positive to negative
solve for where dy/dx=0
1200-4y=0
1200=4y
300=y

at y<300, dy/dx<0
at y>300, dy/dx>0
so at y=300, that is the max

then
z=1200-2y
z=1200-2(300)
z=1200-600
z=600

so then
z=600
y=300
300<600

so the shorter side would be y

so then we see our choices and noticed that
erm
I think it is f(x)=1200x-2x²
takind the derivitive yeilds none of the others


so ya, you are right
6 0
3 years ago
Read 2 more answers
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