Answer:
D.
Step-by-step explanation:
Area=w*h
w*h=(2h)*(h)=2h^2
dA/dt=2(2h)=4h
dA/dt=4h dh/dt in^2/sec
Answer:
40% OR -1/4
Step-by-step explanation:
It could be 40% as all the other numbers are in fraction form while this one is written as a percent.
It could also be -1/4 because that is the only negative number.
Answer:
try to multiply the $400 to the interest and divided by $22.40
Answer:
58
Step-by-step explanation:
33+5·5
PEMDAS
Multiply first
33 + 25
Then add
58
Answer:
45/4
Step-by-step explanation:
We can interpret the question to have two equation which can be solve simultaneously
a+b=7------------(1)
a-b=2------------(2)
From eqn(2) make a subject of formula
a=2+b--------(3)
Substitute the (3) into eqn(1)
a+b=7------------(1)
2+b+b=7
2b=7-2
2b=5
b=5/2
From equation (3) substitute value of b to find a
a=2+b--------(3)
a= 2+5/2
a=9/2
Then What is the value of a x b ?
9/2× 5/2
=45/4
