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Mathematics 7 Online
OpenStudy (anonymous):

What is the value of the expression when a = 4? 2a3^

sammixboo (sammixboo):

First plug in the 4, and is there supposed to be anything after the ^?

OpenStudy (anonymous):

2(4)(3)^__

sammixboo (sammixboo):

2*4*3^?

OpenStudy (anonymous):

hes not answering

OpenStudy (anonymous):

yes

sammixboo (sammixboo):

What is after the ^

OpenStudy (anonymous):

4

OpenStudy (anonymous):

3*4*2^4

sammixboo (sammixboo):

OKay.. \(\sf \large \color{magenta}{2~x~4~x~3^4}\) Fist we do the exponents. What is \(\sf \large \color{magenta}{3^4}\)?

sammixboo (sammixboo):

You cannot switch the numbers up @maybell

OpenStudy (anonymous):

12

sammixboo (sammixboo):

It has to be in that same exact order

sammixboo (sammixboo):

No what is \(\sf \large \color{magenta}{3^4}\) which is \(\sf \large \color{magenta}{3~x~3~x~3~x3}\)

sammixboo (sammixboo):

?

OpenStudy (anonymous):

18

sammixboo (sammixboo):

\(\sf \large \color{magenta}{3~x~3~x~3~x~3}\) = \(\sf \large \color{magenta}{81}\) So now we take \(\sf \large \color{magenta}{81}\) and put it where \(\sf \large \color{magenta}{3^4}\) was in the problem lik so... \(\sf \large \color{magenta}{2~ x ~4 ~x81}\)

sammixboo (sammixboo):

Now what is \(\sf \large \color{magenta}{2~x~4}\)

OpenStudy (anonymous):

8

sammixboo (sammixboo):

Okay now we take \(\sf \large \color{magenta}{8}\) and put it where \(\sf \large \color{magenta}{2~x~4 }\) was like so \(\sf \large \color{magenta}{8~x~81}\)

sammixboo (sammixboo):

What is \(\sf \large \color{magenta}{8~x~81}\)?

OpenStudy (anonymous):

648

sammixboo (sammixboo):

And that is your answer

OpenStudy (anonymous):

you sure

sammixboo (sammixboo):

Yes put 2 x 4 x 3^4 in the calculator

sammixboo (sammixboo):

It will equal 648

OpenStudy (anonymous):

if u r right ill give u a medal

OpenStudy (anonymous):

it was 128

sammixboo (sammixboo):

If you put 2 x 4 x 3^4 in the calculator it will equal 648 not 128

sammixboo (sammixboo):

How can it be 128?

sammixboo (sammixboo):

Unless you wrote the problem wrong on here 2 x 4 x 3^4 = 648

sammixboo (sammixboo):

I can't see a way that it would equal 128

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