anonymous one year ago 1. What is the expression written using each base only once? 48 × 43 (1 point) 411 1211 424 6411 What is the simplified form of each expression? 2. 7x–8 × 6x3 (1 point) Alg 1 Alg 1 42x11 13x–5 3. (–2x8) · 3y9 · 2x4 (1 point) 3x12y9 –12x72y9 –12xy21 –12x12y9 Find the simplified form of the expression. Give your answer in scientific notation. 4. (8 x 107) (7 x 104) (1 point) 1.5 × 1012 5.6 × 1012 1.5 x 1029 5.6 x 1029 5. (7 × 10–4)(9 × 10–10) (1 point) 6.3 × 10–13 63 × 10–13 6.3 × 10–15 6.3 × 10–16

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1. anonymous

2. mathmate

@breaking_benjamin123 If you have a number such as $$4^8\times4^3$$, the only right way to write it is 4^8*4^3 unless you write it out completely using LaTeX. The ^ sign means the following number is written small and higher up (an exponent). The way you wrote it, 48 × 43, will be simply 2064, not quite the answer you want.

3. anonymous

can you help with all of them? @mathmate