Lets start with the algebraic equation
5x=15
you want to isolate the variable in the equation so you end up with x= ...
x is being multiplied by 5, in order to cancel out the 5 divide the entire equation by 5 (BOTH SIDES OF THE EQUATION)
5x=15
———
5
5x becomes x
15 becomes 3
you are left with x=3
Okay follow these patterns and you will always get your answer
Cone = (13)πr2h, where r is the radius and h is the height.
Cube = s2, where s is the length of the side.
Cylinder = πr2h, where r is the radius and h is the height.
Rectangular prism= l×w×h, where l is the length, w is the width and h is the height.
Sphere = (43)πr3, where r is the radius.
ANSWER: (D) 904.78 cm^3
Answer:
A, 3/4(4/3)x=-6(4/3)
Step-by-step explanation:
Multiplying each side of the equation by 4/3 isolates x and solves the equation in one step.
Answer:
i) 1.25m
ii) 32 books
Step-by-step explanation:
60 identical books occupies = length of 1.5m
(i) the length occupied by 50 such books on
a shelf,
If:
60 books = 1.5m
50 books = y m
60 × ym = 1.5 × 50
ym = 1.5 × 50/60
= 1.25 m
Therefore, 50 of such books occupies a length of 1.25m
(ii) the number of such books needed to completely
occupy a shelf that is 80 cm long.
100 cm = 1m
80 cm = x m
Cross Multiply
xm = 80/100
= 0.8 m
If : 1.5 m = 60 books
0.8 m = y books
Cross Multiply
= 1.5m × y books = 60 books × 0.8m
y books = 60 books × 0.8m/1.5m
y books = 32 books
Therefore, 32 books occupies a shelf that is 80 cm or 0.8 m long