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musickatia [10]
3 years ago
10

Find the area of the triangle,

Mathematics
1 answer:
Alenkasestr [34]3 years ago
8 0

Answer:

114.75

Step-by-step explanation:

  • 6x3=18
  • 8x10=80
  • 8.5
  • Add all together, you get = 229.5
  • Divided by 2 you get = 114.75
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Find center,foci, and vertices of ellipse (x+3)^2/21+(y-5)^2/25=1
sasho [114]
I don't know if we can find the foci of this ellipse, but we can find the centre and the vertices. First of all, let us state the standard equation of an ellipse. 

(If there is a way to solve for the foci of this ellipse, please let me know! I am learning this stuff currently.) 

\frac{(x-x_{1})^2}{a^2}+ \frac{(y-y_{1})^2}{b^2}=1

Where (x_{1},y_{1}) is the centre of the ellipse. Just by looking at your equation right away, we can tell that the centre of the ellipse is: 

(-3,5)

Now to find the vertices, we must first remember that the vertices of an ellipse are on the major axis. 

The major axis in this case is that of the y-axis. In other words, 

b^2>a^2 

So we know that b=5 from your equation given. The vertices are 5 away from the centre, so we find that the vertices of your ellipse are: 

(-3,10)
 & (-3,0)

I really hope this helped you! (Partially because I spent a lot of time on this lol) 

Sincerely,

~Cam943, Junior Moderator
6 0
4 years ago
I don't understand what I should do for this ?I am very stuck.
Nana76 [90]
We can solve this by remembering that in each box, there are 10 grapefruit. This means we should multiply the number of boxes (20,400) by 10.

20400
*10
-----------
204,000

Using the calculation above, we know that 204,000 grapefruit were shipped.
3 0
3 years ago
Find the 10th term in the arithmetic sequence -2, -5, -8, -11
lara31 [8.8K]
The answer is -29, hope this helps 

5 0
3 years ago
Read 2 more answers
Find the perimeter of the figure. Round to the nearest hundredth and show work.
dolphi86 [110]

Answer:

38 cm

Step-by-step explanation:

The perimeter of the figure is the sum of the lengths of all its sides.

We have two unknown length, so let's find their lengths first.

x= 10 -6= 4 cm

y= 9 -2= 7cm

Let's add all the lengths together to find the perimeter:

Perimeter

= 9 +10 +2 +6 +7 +4

= 38 cm

3 0
2 years ago
Bobby has eaten bubblegum sticks. He has two friends that he wants to share with. How will he split the gum so that each of the
Mariana [72]
He will split the gum into thirds if he wants more for himself and so his friends all get an equal amount
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4 years ago
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