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ahrayia [7]
3 years ago
8

I need helps with this

Mathematics
1 answer:
slega [8]3 years ago
3 0

Answer:

A. -3(5x - 13)

Step-by-step explanation:

When you open the bracket

You have -3 x 5x -3(-13)

Negative negative gives you positive

Then it becomes

-15x + 39

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Write an exponential function in the form y=ab^x that goes through points (0,12) and (3,6144)
skad [1K]

Given:

An exponential function goes through points (0,12) and (3,6144).

To find:

The exponential function.

Solution:

The general exponential function is:

y=ab^x           ...(i)

The function goes through point (0,12). Substituting x=0,y=12, we get

12=ab^0

12=a

The function goes through point (3,6144). Substituting a=12, x=3,y=6144 in the general exponential function, we get

6144=12b^3

\dfrac{6144}{12}=b^3

512=b^3

512^{\frac{1}{3}}=b

8=b

Putting a=12,b=8 in (i), we get

y=12(8)^x

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Answer:

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As Robert is 7 year old . He can groups the milk in the cup according to size , shape and color. He has a better understanding of numbers and can understand problems easily.

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