The price of the sofa will be $490
he saved $210 :)
4. In cell-B8, create a formula without using a function that multiplies the value.in.cell.B7. by the value-in-cell-B6-andthen adds-the-value in B7..Update.the-cell-reference to cell: B6, from a relative reference to a mixed-reference by making an absolute-reference to row.6..Copy-the-formula-from-cell-B8-to-the-range-B9:B11-and-then-copy-the-formulas. from the range-B8:B11-to-the-range-C8:H11.1 13. SALO extend the list of years to the range A15:A17.1 In-cell-B13, create-a formula without a function using absolute references that subtracts the values of cells.B5 and B7.from.cell-B6 and then multiplies the result.by.cell-B8. Copy the formula-from-cell-B13 to the range C13:H13.1 In-cell-B14, create-a formula without using a function that adds.1.to the value-in-cell B12 and then multiplies the result by the value-in-cell-B13Update-the-referenceto-cell B12, from a relative-reference to a mixed-reference by making an absolute reference to row.12. Copy the formula-from-cell-B14-to-the-range-B15:B17 and then copy the formulas.from-the-range-B14:B17 to the range-C14H17.1
Answer:
-16/65
Step-by-step explanation:
Given sinα = 3/5 in quadrant 1;
Since sinα = opp/hyp
opp = 3
hyp = 5
adj^2 = hyp^2 - opp^2
adj^2 = 5^2 = 3^2
adj^2 = 25-9
adj^2 = 16
adj = 4
Since all the trig identity are positive in Quadrant 1, hence;
cosα = adj/hyp = 4/5
Similarly, if tanβ = 5/12 in Quadrant III,
According to trig identity
tan theta = opp/adj
opp = 5
adj = 12
hyp^2 = opp^2+adj^2
hyp^2 = 5^2+12^2
hyp^2 = 25+144
hyp^2 = 169
hyp = 13
Since only tan is positive in Quadrant III, then;
sinβ = -5/13
cosβ = -12/13
Get the required expression;
sin(α - β) = sinαcosβ - cosαsinβ
Substitute the given values
sin(α - β) = 3/5(-12/13) - 4/5(-5/13)
sin(α - β)= -36/65 + 20/65
sin(α - β) = -16/65
Hence the value of sin(α - β) is -16/65
Next step would be 5x10x5
Answer:
C.h=infinitely many solution
