4 1/2 = 9 / 2 ;
Then, ( 9 / 2 ) ÷ ( 3 / 4 ) = ( 9 / 2 ) × ( 4 / 3 ) = ( 36 / 6 ) = 6 ;
Finally, ( 4 1/2 ) × 6 = ( 9 / 2 ) x 6 = 54 / 6 = 9 ;
y = 9.
Answer:
Around 120,000 bacteria.
Multiply the amount of estimated bacteria by the amount of square millimeters.
Answer:
10 x 15 = 150
Area of trapezoid:
10 + 20 = 30
30 x 5 = 150
20 - 15 = 5
150 divided by 2 ( x 1/2) = 75
75 + 150 = 225 square cm
Formula of a trapezoid:
B1(base1) + B2(base2) x H (Height) x 1/2 (basically dividing by 2)
E. 5x+3 = 28
5x = 28 - 3
Divide by 5
Final answer = 5
F. 3x-9 = 18
3x = 18 + 9
18 + 9 = 27
Divide by 3
Final answer: 9
G. 8x-1=7
8x = 7 + 1
7 + 1 = 8
8x = 8
Divide by 8
Final answer: 1
H. 3x+5 = 10
3x = 10 - 5
10 - 5 = 5
Divide by 3
Final answer: 5/3
i. 13 + 7x = -1
7x = -1 - 13
-1 - 13 = -14
Divide by 7
Final answer: -2
j. 14 = 3x + 5
-3x + 14 = 5
-3x = 5 - 14
-3x = -9
Divide by - 3
Final answer: 3
K. 4x - 7 = -13
4x = -13 + 7
4x = -6
Divide by 4
Final answer: -3/2
l. -3 = 2x+ 9
-2x - 3 = 9
-2x = 9 + 3
9 + 3 = 12
2x = 12
Divide it by -2
Final answer: -6
104 minutes all You have to do is add them both together
