Question

A)m+5m+2m+3m , m=0,5 b)-8(k-3)+4(k-2)-2(3k+1) , k=2,43 Очень срочно

Answer 1

А)0,5+5*0,5+2*0,5+3*0,5=5,5

Б)-8(к-3)+4(к-2)-2(3к+1)=-8к+4к-6к+24-8-2=-10к+14=-24,3+14=-10,3

Answer 2

A) To evaluate the expression m+5m+2m+3m when m=0.5, we substitute the value of m into the expression:

m + 5m + 2m + 3m = 0.5 + 5(0.5) + 2(0.5) + 3(0.5) = 0.5 + 2.5 + 1 + 1.5 = 5.5

Therefore, when m=0.5, the value of the expression m+5m+2m+3m is 5.5.

B) To evaluate the expression -8(k-3)+4(k-2)-2(3k+1) when k=2.43, we substitute the value of k into the expression:

-8(k-3) + 4(k-2) - 2(3k+1) = -8(2.43-3) + 4(2.43-2) - 2(3(2.43)+1) = -8(-0.57) + 4(0.43) - 2(7.29+1) = 4.56 + 1.72 - 2(8.29) = 4.56 + 1.72 - 16.58 = -10.3

Therefore, when k=2.43, the value of the expression -8(k-3)+4(k-2)-2(3k+1) is -10.3.