Answer:
The first answer is 3) 9(3r-4) and 27r-36
The second answer is 2) Y squared - 36/6
The third answer is 1) 300
Step-by-step explanation:
<u>First answer :</u>
Equivalent expressions are expressions that work the same even though they look different.
9(3r-4) is equal to 27r-36.
9 x 3r = 27r
9 x 4 = 36
27r-36
<u>Second answer :</u>
"The square of y decreased by quotient of 36 and 6" Explains the answer which is Y squared - 36/6
<u>Third answer :</u>
The formula you want to follow is: 2(LW+WH+HL)
2(LW+WH+HL) = 2(12x9+9x2+2x12)
2(12x9+9x2+2x12) = 300
What you need to do is very easy. If K=2 and m=5 all you need to do is put them in place. So the 2 would go in front of the 5 and the 5 would go right after the multiplication symbol.
25*5 but better way is to have parentheses so it wont look like 25.
2(5)*5= 50
Step-by-step explanation:
f (x) = x
y = x
it goes through... (-1,-1), (0,0),(1,1), (2,2) ....
Answer:
A = 20sinθ(6 + 5 cosθ) cm²
Step-by-step explanation:
Drop perpendiculars DE and CF to AB.
Then, we have congruent triangles ADE and BCF, plus the rectangle CDEF.
The formula for the area of the trapezium is
A = ½(a + b)h
DE = 10sinθ
AE = 10cosθ
BF = 10cosθ
EF = CD = 12 cm
AB = AE + EF + BF = 10cosθ + 12 + 10 cosθ = 12 + 20cosθ
A = ½(a + b)h
= ½(12 +12 + 20 cosθ) × 10 sinθ
=(24 + 20 cosθ) × 5 sinθ
= 4(6 + 5cosθ) × 5sinθ
= 20sinθ(6 + 5 cosθ) cm²