Answer:
Perimeter = 42 cm
Step-by-step explanation:
A square has all equal sides so you would just add 10.5 + 10.5 + 10.5 + 10.5 to get 42 cm.
Answer:
the third one
Step-by-step explanation:
Answer:
Step-by-step explanation:
D. D is the answer
Answer:
The weight of container C is 2.1kg.
Step-by-step explanation:
This question is solved using a system of equations.
I am going to say that:
x is the weight of container A.
y is the weight of container B.
z is the weight of container C.
The average weight of 3 containers A,B and C is 3.2kg.
This means that the total weight is 3*3.2 = 9.6kg. So
Container A is twice as heavy as container B.
This means that 
.
Containers B is 400 g heavier than container C.
400g is 0.4kg. So
This means that 
, or 
Replacing y and z as functions of x in the first equation:
Container C
The weight of container C is 2.1kg.
Answer:
$0.24
Step-by-step explanation:
Given:
At full price, Melvin would pay for per liter of gasoline = $1.679
Using his loyalty card, Melvin only pays = $1.439
Question asked:
How much less does Melvin pay per liter using his loyalty card?
Solution:
At full price, Melvin would pay for per liter of gasoline = $1.679
Using his loyalty card, Melvin only pays = $1.439
To find that that how much less amount Melvin pay for per liter of gasoline using his loyalty card, we will subtract the payment using loyalty card from payment without using loyalty card.
$1.679 - $1.439 = $0.24
Therefore, $0.24 less amount Melvin pay for per liter of gasoline using his loyalty card.
