3 years ago

The sum of the digits in a two-digit whole number is 9. The number in the

Mathematics

1 answer:

Arte-miy333 [17]3 years ago

8 0

Answer:

Step-by-step explanation:

x = # in ones place

y = # in tens place

x + y = 9

y = x - 3

substitute:

x + x-3 = 9

2x - 3 = 9

2x = 12

x = 6

y = 3

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Let f(x) = 4x + 3 and g(x) = -2x + 5. Find.(f o g) (5)

daser333 [38]

f(x) = 4x + 3
g(x) = -2x + 5

(f o g) (5) means the function of g when g is a function of 5
(the function of the function concept)

so we need to get g(5) firstly


g(x) = -2x + 5
g(5)= -2(5) + 5 = -5

After that, f(g(5)) = f(-5) = 4(-5) + 3 = -20 + 3 = -17

I hope that helps

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bogdanovich [222]

Answer:

The mean is 23!

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