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Brut [27]
3 years ago
11

5x + 25y =100 x+ 3y =12

Mathematics
1 answer:
andrew-mc [135]3 years ago
5 0
Please clarify your question because based on experience, there was never a question involving more than 1 " = "
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If f(x) = x2 + 7x and g(x) = 3x - 1, what is f(g(x))?
Burka [1]

Answer:

f(g(x)) = 9x^2 + 15x - 6

Step-by-step explanation:

We are using function g(x) = 3x - 1 as the input to function f(x) = x^2 + 7x.

Starting with f(x) = x^2 + 7x, substitute g(x) for x on the left side and likewise substitute x^2 + 7x for each x on the right side.  We obtain:

f(g(x)) = (3x - 1)^2 + 7(3x - 1).

If we multiply this out, we get:

f(g(x)) = 9x^2 - 6x + 1 + 21x - 7, or

f(g(x)) = 9x^2 + 15x - 6

6 0
3 years ago
A blueprint of a house shows a dining room with
Gnom [1K]

Actual area = 42ft²

The actual area will simply be calculated as:

= 6 × 7

= 42 feet²

8 0
2 years ago
The amount of a 500 g sample of a radioactive substance that remains over time is given by the equation , where d is the number
Vlada [557]
Non-linear

The line should be an exponential function, as it halves in mass every time a certain amount of time has passed.
4 0
3 years ago
Which of the following are in the correct order from least to greatest?
Cloud [144]
The first option because turn them all into degrees and it says:
54, 60, 90, 120, 255
7 0
3 years ago
Read 2 more answers
What's the answer and the work
erma4kov [3.2K]
For the first 6 trips she walked 3.2 kilometers and for the next 6 she made another 3.2 which would be 6.4 kilometers for 12 trips now she made 3 more trips which is half of the amount she originally did so it would be half of the distance also so 3.2 divided by 2 is 1.6 kilometers so for the last 3 trips she walked 1.6 kilometers. now add up all the distance she walked so 6.4 kilometers for the 12 trips plus the 1.6 for the other 3 trips is 8 kilometers in total. she walked 8 kilometers after 15 trips.
3 0
3 years ago
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