5 We are going to show that (a, b) belongs to one of the two lines with equations b=a−−√ and b=1a√ as displayed on the following figure. It will give the answer, due to the symmetry of the system of equations with respect to the group of variables (a, b) vs. (c, d). Moreover, we will establish (see (*) at the bottom) that the last equation is superfluous.

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x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

£56

step-by-step explanation:

u divide 24 by 3 and u get 8 so if u do 8 time 7 or 8+8+8+8+8+8+8 u get 56 and 56 divided by 7 is 8.

30005

yes ok                                            

step-by-step explanation:

no solution.