$3x^{2} - 4xy + 2y { }^{2} - 1 \\ 3 \times ( - 3) { }^{2} - 4 \times ( - 3) \times 5 + 2 \times 5 {}^{2} - 1 \\ (3 \times 9) - ( - 60) + 50 - 1 \\ 27 + 60 + 50 - 1 \\ 165$

8 0

1 year ago

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What the heck is happening in this picture

ycow [4]

Answer:

nothing they just chillin chillin-.-

7 0

3 years ago

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A number has 2,5 and 7 as its prime factors. what are the four smallest values it and take

MA_775_DIABLO [31]

Answer:

70, 140, 280, 350

Step-by-step explanation:

Obviously, it must have the factors 2, 5, 7 as a minimum, so the smallest value is 2×5×7 = 70.

Any of these primes can be added to the product. In increasing order, the smallest additional factors will be 2, 4, 5, 7, 8, 10, ...

So, the four smallest numbers with prime factors of 2, 5, and 7 are ...

70 = 2·5·7

140 = 2²·5·7

280 = 2³·5·7

350 = 2·5²·7

3 0

3 years ago

The science club sponser is ordering caps and shirts for the boys and girls in the science club. There are 45 science club membe

mafiozo [28]

Answer:

9 packs of shirts and 15 packs of caps

8 0

3 years ago