Answer:
11.) 10w^2 + 43w + 21.
12.) -15y^2 - 2y + 8
Check the explanation for details
Step-by-step explanation:
11.) You are meant to multiply each row by both columns. For instance, multiply 5w by 2w and 7 you will get 10 w^2 and 35 w
Also, multiply 3 by both 2w and 7 you will get 6w and 21. Therefore,
Expansion of ( 5w + 3 )( 2w + 7 ) will produce 10w^2 + 37w + 6w + 21
= 10w^2 + 43w + 21.
12.) Repeat the same process by multiplying row by column.
Multiply -3y by 5y and 4 you will get -15y^2 and -12y.
Also, multiply 2 by same 5y and 4. You will get 10y and 8
Therefore, the expansion of
( -3y + 2 )( 5y + 4 ) will be
-15y^2 - 12y + 10y + 8
-15y^2 - 2y + 8
Answer:
A. It does not matter. The volumes of X and Y are equivalent.
Step-by-step explanation:
Volume of the pyramid = Base area × Height
For rectangular pyramid X:
Given Height of pyramid = 10cm
Base area = Length × Breadth
Base Area = 6cm×5cm = 30cm²
Volume = 10×30
Volume of the pyramid = 300cm²
For pyramid Y:
Given Height = 10cm
Base area = 1/2 base×height
Base area ,= 1/2 × 7.5×8
Base area = 30cm²
Volume of the triangular pyramid = 10×30 = 300cm³
We can see that the volume of X and Y is the same, therefore the type of chocolate Jeremy chose doesn't matter.
Answer:
Step-by-step explanation:
-24, 24, 48, 72
Hope this helps :)
