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Radda [10]
3 years ago
8

Plz help I don’t know it

Mathematics
2 answers:
Arte-miy333 [17]3 years ago
8 0

Answer:

Ummmm I have no idea but if I have time to anwser I wold

Step-by-step explanation:

Nata [24]3 years ago
5 0
It is used for finding an unknown side or a triangle

The formula is a^2+b^2=c^2 (a squared plus b squared equals C squared)

I’m not sure about the last thing
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The average a of two numbers c and d is equal to half the sum of c and d.
monitta

Answer:

\frac{c + d}{2} =  \frac{c + d}{2}

5 0
3 years ago
Can someone help me in number 3 please
Sholpan [36]

Area of rectangle is the multiplication between the sides.


The first rectangle:


A = (2x + 5) . (3x - 2)

A = 2x . 3x - 2 . 2x + 5 . 3x - 2 . 5

A = 6x² - 4x + 15x - 10

A = 6x² + 11x - 10


The second rectangle:


A = (5y + 5) . (2y - 3)

A = 5y . 2y - 3 . 5y + 5 . 2y - 3 . 5

A = 10y² - 15y + 10y - 15

A = 10y² - 5y - 15

4 0
3 years ago
What number is 40% of 180?
Olin [163]

Answer:

72

Step-by-step explanation:

You can find ten percent of 180 pretty easily, it is 18 (divide by 10) then multiply by 4 to get 40%.

4 0
2 years ago
Read 2 more answers
Which linear system of equations does the matrix represent?<br><br> -3 5 | 15<br> 2 3 | -10
Gre4nikov [31]
Actually the answer is
-3x + 5y = 15
2x + 3y = -10
4 0
3 years ago
Find the four geometric means between 486 and 2
melamori03 [73]

Answer:

486, 486r,486r^2,486r^3,486r^4,2

------------------------------------  

2 = 486r^5

-----

r^5= 1/243

----

r = 1/3

---

------

Ans: 486*(1/3),486*(1/9),486(1/27),486(1/81)

-----

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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