<span>x=<span><span>2</span><span><span>−1+<span>√<span><span><span>53</span></span><span></span></span></span></span></span><span></span></span>,<span><span>2</span><span><span>−1−<span>√<span><span><span>53</span></span><span></span></span></span></span></span><span></span>
I hope this helps. :)</span></span>
The square root of 73. Since the theorem is a^2+b^2=c^2 and only works with right triangles. You take 2/2 the base so you have a right triangles with a hypotenuse if 9 and a side of 3. Then you just plug in to solve.
If you mean subtraction, then its 417.
Answer:
the numbers are 7 and -3
Step-by-step explanation:
Mrs Kennedy is buying pencils for 315 students.
The pencils are sold in boxes of 10.
Therefore the number of pencils she needs to buy should be a multiple of 10, so that she can buy boxes of 10 pencils each.
number of students are 315 but 315 is not a multiple of 10
so we have to round off 315 to the nearest ten, that's 320.
so then she has to buy 320 pencils
number of boxes she needs - 320 / 10 = 32 boxes of pencils
she only needs pencils for 315 students so she will have 5 extra pencils
she will have to buy 32 boxes
