15 points need answer asap
find the product. (6m2 – 5m + 4)(–4m2 – 3m – 7)

(a) 2m2 – 8m – 3

(b) –24m4 + 2m3 – 43m2 + 23m – 28

(c) –24m2 + 15m – 28

(d) –24m4 – 38m3 – 73m2 – 47m – 28

The answer to your question is letter B

Step-by-step explanation:

Product

                     (6m² - 5m + 4) ( -4m² - 3m - 7)

1.- Multiply -4m² by each term of the first  group

           ( 6m² - 5m + 4)(-4m²) = -24m⁴ + 20m³ - 16 m²

2.- Multiply -3m by each term of the first group

          (6m² - 5m + 4) (-3m) = -18m³ + 15m² - 12m

3.- Multiply -7 by by each term of the first group

         (6m² - 5m + 4) (-7) = -42m² + 35m - 28      

4.- Simplify

      -24m⁴ + 20m³ - 16 m²  -18m³ + 15m² - 12m -42m² + 35m - 28      

     -24m⁴ + 2m³ - 43m² + 23m - 28

9) i can't see the angle so whatever it is just do this: cos(angle) x hypotenuse and then use that answer and they hypotenuse and plug it into this: (answer you just got)^2 + b^2 = (hypotenuse)^2. the first answer will be the answer of the adjacent side and the second answer after this equation will be the opposite side.

10) y = 14 x = √147 or 12.12435565

11) x = 4.8

12) x = 4.2

13) x = 9.3

14) pq: 13.2

qr : 17.6

angle p: 53º

15) angle c: 54.3º

angle a: 35.7º

16) h = 21040

v = 1841

step-by-step explanation:

10) 7/sin(30) = 14 = y

7^2 + b^2 = 14^2

49 + b^2 = 196

b^2 = 196 - 49

√b^2 = √147

x = √147

11) cos(70) x 14 = 4.788282007

x = 4.8

12) tan(25) x 9 = 4.196768923

x = 4.2

13) sin(31) x 18 = 9.270685348

x = 9.3

14) pq: sin(37) x 22 = 13.23993051

pq: 13.2

qr: cos(37) x 22 = 17.56998122

qr : 17.6

angle p: 180 - (37 + 90) = 53º

15) cos-1(7/12) = 54.31466529

angle c: 54.3º

angle a: 180 - (90 + 54.31466529) = 35.68533471

angle a: 35.7º

16) 4 x 5280 = 21120

cos(5) x 21120

h = 21039.63202

h = 21040

sin(5) x 21120

v = 1840.729287

v = 1841