Answer:
see below
Step-by-step explanation:
the temperature rose by 11. +11
the temperature dropped by 14 - 14
Let t = temperature
The expression is
t + 11 -14
Let x be positive chips and y be negative chips
xxxxx xxxxx x
yyyyy yyyyy yyyy
The result is -3
t-3
(g-h)(x) = 2x+1 -(<span>x-2)
</span>(g-h)(x) = 2x+1 - x + 2
(g-h)(x) = x + 3
Answer:m =-1
Step-by-step explanation:
To solve m=-(4+m)+2
Open the brackets
m=-4-m+2
Collect like terms
m+m=-4+2
2m=-2
Divide through by -2
m=-1
Answer:
Step-by-step explanation:
Volume of water in the swimming pool
= 25 x 11 x 3.1
= 852.5 m³
mass of water in the pool
= volume x density of water
m = 852.5 x 10³ kg
We shall consider the height H by which the centre of mass of the water-body is increased to lift the water .
H = 3.1 / 2 = 1.55 m
Work done in pumping the water out of pool
mgH ,
= 852.5 x 10³ x 9.8 x 1.55
= 13 x 10⁶ J
Answer:
376
Step-by-step explanation:
16×16+16×15÷2
=256+120
=376