Determine whether each of the following sets are subspaces of r3 under the operations of addition and scalar multiplication defined on r3. justify your answers
w1={(a1,a2,a3)∈r3: a1=3a2 and a3=−a2}

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo

21/58.

hope to be marked brainliest

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²

so, converting firstly the mixed fractions to improper fractions and then "adding".