3 years ago

Help! please explain but if you don't explain that okay Too!!mark as brain

Mathematics

1 answer:

Mandarinka [93]3 years ago

4 0

Answer:

A=2(wl+hl+hw)

that the formula

Length

L 11

W 8

H 21

8 x 11 + 21 x 11 + 21 x 8

SA = 974in^2

Step-by-step explanation:

Hope this helps :)

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3 years ago

Which is the factorization of 8x2 13x – 6? (8x – 3)(x 2) (x – 6)(8x 1) (2x – 2)(4x 3) (4x – 1)(2x 6)

vagabundo [1.1K]

we have

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$8(x^2+\frac{13}{8}x+\frac{169}{256}) = 6 +\frac{169}{32} \\ \\ 8(x+\frac{13}{16} )^{2} =\frac{361}{32} \\ \\ (x+\frac{13}{16} )^{2} =\frac{361}{256}\\ \\ (x+\frac{13}{16} ) =(+/-)\sqrt{\frac{361}{256}} \\ \\ (x+\frac{13}{16} ) =(+/-)\frac{19}{16} \\ \\ x1=-\frac{13}{16} +\frac{19}{16} =\frac{6}{16}\\ \\ x2=-\frac{13}{16} -\frac{19}{16}=-2$