Answer:
the answer is 30
Step-by-step explanation:
hight x base²
Answer:
A. x=10
B. x=-19
C. x=53
D. x=-1/28
Step-by-step explanation:
A.
2x+3=23
2x=20
x=10
B.
-3(x+9)=30
x+9=-10
x=-19
C.
0.75x-12.75=27
0.75x=39.75
x=53
D.
1/2x+6=-8
1/2x= -14
1=-28x
x=-1/28
Answer:
768 tiles would be required to tile the floor.
Step-by-step explanation:
Let's first calculate the number of square meters that the rectangular floor represents, by using the formula for the area of a rectangle (length x width):
Floor area = 8 m x 6 m = 48
Next, let's convert the side of the square tiles into meters in order to keep the same units in both (floor area an tile area):
25 cm = 0.25 m
Then the are of a square tile can be obtained by the formula 0.25 m x 0.25 m = 0.0625
Now to find the number of tiles needed, we perform the division of the total floor area to be covered divided by the area covered by a single tile:
Number of tiles needed: 48 / 0.0625 = 768 tiles
Step-by-step explanation:
a) 2x(3x + 1)(4 - 2x) = 0
=> 2x = 0 (or) 3x + 1 = 0 (or) 4 - 2x = 0
=> x = 0 (or) x = -1/3 (or) x = 2
b) x²(2x + 1)(x - 3) = 0
=> x²=0 (or) 2x + 1=0 (or) x - 3=0
=> x = 0 (or) x = -1/2 (or) x = 3
Hope you've understood the solutions.