Annabelle and navene are multiplying (4275)(4372). annabelle's work navene's work (4275)(4372) = 42 + 375 + 2 = 4577 (4275)(4372) = 42⋅375⋅2 = 46710 is either of them correct? explain your reasoning. you get (30) points if you answer within 20 min

Neither are correct.

Navene has broken the problem up and simply added numbers together to get "4577"

Annabelle is also wrong because whereas she multiplied, she also broke up the numbers in the equation to get "46710"

The answer should be 18,690,300

(4275)(4372) = 42 + 375 + 2 = 4577

Here, annabelle just "broke" the numbers and add them, you can't do this in multiplication (or in any operation really)

(4275)(4372) = 42⋅375⋅2 = 46710

Navene also "broke" the numbers, the only difference is that she multiplied them, but this is still wrong

solving the multiplication:

(4275)*(4372) = (4000 + 275)*(4000 + 372) = 4000*4000 + 275*4000 + 372*4000 + 275*372 =18690300

there i splitted a kinda hard multiplication in 4 simpler ones that are much easier to solve.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.