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Gennadij [26K]
3 years ago
10

Find the value of 2a² + 5b² when a= -6 and b= 2

Mathematics
2 answers:
sashaice [31]3 years ago
4 0
2(-6^2)+5(2^2)
2(36)+5(4)
72+20
92
poizon [28]3 years ago
3 0
Plug in the values -6 into 'a' and 2 into 'b'. 

2a² + 5b² 
2(-6)² + 5(2)²
First solve the exponents  ⇒  -6² means -6 * -6, which equals 36
2² = 2*2 = 4

2(36) + 5(4)
2*36 → 72
5*4 = 20
72 + 20 = 92  

Final answer → 92

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Step-by-step explanation:

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 7√(x²)          7√(x²)

------------- = ----------------------

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We want to get the fractional exponent out of the denominator.  To do this, multiply both numerator and denominator by y^(1/2):

 7√(x²)          7√(x²)                y^(1/2)      7√(x²)·y^(1/2)       7x√y

------------- = --------------------- * ----------- = --------------------- = ----------

  5 √(y³)        5√( y^(3/2) )       y^(1/2)        5 √(y²)                  5y

This is the final answer.  We have succeeded in removing radicals / fractional exponents from the denominator.

3 0
3 years ago
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Step-by-step explanation:

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8 0
2 years ago
Mateo has 60 wooden tiles in the shape of diamonds as shown below. He plans to glue these tiles side by side onto a tabletop.
Rudik [331]

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He's using 60 tiles. Multiple the area of 1 tile which is 27 by 60 wooden tiles to find the area of the parallelogram. 27 multipled by 60 tiles= 1620 inches squared

8 0
3 years ago
Read 2 more answers
-5x + 11 __) Please show your work!
timofeeve [1]
-1 (5x 11) i hope that helps
5 0
3 years ago
Can u answer this question I need help
maks197457 [2]
The easiest way to do this is find all your basic info for a data set for both of the locations and cross check with the options what is true.
6 0
3 years ago
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