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aev [14]
3 years ago
7

20 POINTS!!

Mathematics
2 answers:
Pavlova-9 [17]3 years ago
7 0
Use the Pythagoras Theorem 
Tasya [4]3 years ago
4 0
20^2 + 21^2 = 27^2
400 + 441 = 729
881 = 729 (does not equal)

Not a right traingle
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Sin(x)-tan(x)cos(x)+cos(π/2-x)
Gala2k [10]

Answer:

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Step-by-step explanation:


7 0
3 years ago
Alan's dogs have a total of 24 legs (l). If each dog has 4 legs, which equation gives the number of dogs (d) that Alan has?
N76 [4]
Your answer would be A
He had 6 dogs 
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3 0
3 years ago
Two pounds of bananas cost $1.16 what would be the cost of 5pounds s of bananas
ivann1987 [24]
If 2 lb of bananas cost $1.16, then each pound costs $0.58.

0.58 * 5 = 2.9

So 5 lb of bananas will cost $2.90.

Hope this helps!
6 0
3 years ago
Read 2 more answers
If 5 + 6i is a root of the polynomial function f(x), which of the following must also be a root of f(x)? –5 – 6i 5 – 6i 6 – 5i 6
san4es73 [151]

Answer: 5-6i

The rule is that if f(x) has real number coefficients, then a root of x = a+bi pairs up with its conjugate pair of x = a - bi. In this case, a = 5 and b = 6.

4 0
3 years ago
Read 2 more answers
If 3x - y = 3 and -x + y = 3 then xy=___?
mamaluj [8]

First find x and y.

Solve system of equations by elimination.

  3x-y=3

+(-x+y=3)

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

2x=6

x=3

Now plug in x into one of the equations to find y.

-3+y=3

y=6

xy=3x6=18

5 0
3 years ago
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