Which one should I choose

Mathematics

2 answers:

umka21 [38]3 years ago

7 0

Answer:

12x^5

Step-by-step explanation:

when simplifying an expression, you add the exponents, but multiply the bases :)

i hope u have a great day :)

bulgar [2K]3 years ago

5 0

Answer:

I believe the answer is 12x 5

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Use ΔABC to find the value of cos B A) 12/13 B) 12/5 C) 5/13 D) 5/12

Ivanshal [37]

Answer:

C) 5/13

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that the cosine ratio is ...

Cos = Adjacent/Hypotenuse

For the given problem, this means ...

cos(B) = BC/BA = 15/39

cos(B) = 5/13

7 0

3 years ago

Find two positive numbers such that the sum of the first and twice the second is 56 and whose product is a maximum

Svetlanka [38]

Let
x-------> the first number
y-------> the second number
P-----> product

we know that
x+2y=56----------> 2y=56-x-----> y=28-0.5x------> equation 1
P=x*y----> equation 2

substitute equation 1 in equation 2
P=x*[28-0.5x]-----> P=28x-0.5x²

using a graph tool
see the attached figure
the vertex is the point (28,392)
that means
for x=28
the product is 392 (maximum)
find the value of y
y=28-0.5x----> y=28-0.5*28----> y=14

the answer is
the numbers are 28 and 14