Multiply. express the product in simplest form. 210·20=n 40 4 1100 20

The number which has to be put in simplest form:

n= 210 × 20=4200

Factorizing 210 and 20 in terms of prime factors,

210 = 2 × 3 × 5 × 7

20= 2 × 2× 5

210 × 20=4200

= 2× 3× 5×7×2×2×5

= 2×2×2×3×5×5×7  

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47