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  

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

hreryryrranswer:

step-by-step explanation: