No you need a better calculator

Use mode 5 3

The one that we did with the calculator. You press mode 5 then 3 and enter a,b and c .... We have done so many problems

Look if we follow the trinomial rule then use your calculator (mode 5 then 3) put a=1 b= 0 (because we don't have x) then c = 25 Your calculator will give two Xs one 5 and the other -5 So we put them by reversing sign as usual and get (x-5)(x+5) A better method is to know that if you have a minus between two squares ( the x^2 and the 25 which is 5^2) Then you don't need a calculator. Just put two brackets with different signs (x-5)(x+5) So if you understand that the second problem will be (x-3)(x+3)... Hope this helps 😁

1/3 it says from shaded to A so it gets smaller. We divide image over original

We divide image over original so it is 1/3

Volume = area of base x height 21 = 7 x h So h = 3 cm Total S.A is now easy to calculate Two opposite sides of each S.A = 2×7 + 2(7×3) + 2( 1×3) S.A = 14 + 42 + 6 = 62 cm^2

First step we use interior angles to calculate the 67 Then remember that the bearing has to be clockwise from the North so 360 - 67 = 293

First shade all the complete squares and count them then add each two halves or parts that form 1 square together until you finish all .. it will never be accurate that's why they say estimate

Draw a line from the top vertex to the mid of the bottom base That's line number 1 now do that from another vertex to the mid of its opposite side that's number 2 and so on ... please try with a pencil

From every vertex to the mid of the opposite side. We have 5 vertices so 5 lines of symmetry

Get 25^2 + 60^2 = 4225 Then get square root of the answer which is 65 cm

@Adham Mohamed I said 8 m which means 4 cm

Yes so far so good :) -n = 2 so multiply both sides by (-1) we do that mental and it becomes n = -2

No The line away from the Patio is right, but around the tree you draw a circle not a square with radius 8m which means 4 cm

count the spaces as he did in his example to get the new dimensions

As you did ..You look for the point where the two lines intersect and get the x and y of that point

Yes but the line could have passed by the points more precisely ... But yes correct :)

@Ali Elsaadany Make sure your calculator reads degrees Press shift mode and choose degrees. A small D should be in the middle of the screen not r and not g. That is very important