Answer:
A and C ....................................
Answer:
B. 2 x 10^2 m^3
Step-by-step explanation:
Given
Volume of submarine when full of water= 7.8 × 10³ m³
Total mass of submarine =8× 10⁶ kg
Density of sea water= 1000 kg/m³
Volume to be occupied by sea water at given mass of submarine=?
Apply; Density=mass/volume ⇒⇒volume=mass/density
where M=mas, V=volume, D=density
Excess volume= 8×10³ - 7.8× 10³ = 2×10² m³
Answer:
a) 
is not a valid equality. So a) will not have a solution set of all real numbers.
b) 
is a valid equality for all real numbers. So b) will have a solution set of all real numbers.
c) is a valid equality for all real numbers. So c) will have a solution set of all real numbers.
d) 
is only valid for 
. So d) will not have a solution set of all real numbers.
Step-by-step explanation:
a)
is not a valid equality. So a) will not have a solution set of all real numbers.
b)
is a valid equality for all real numbers. So b) will have a solution set of all real numbers.
c)
is a valid equality for all real numbers. So c) will have a solution set of all real numbers.
d)
This is only valid for . So d) will not have a solution set of all real numbers.
Answer:
<h2><u>
it depends on what expression u want </u></h2>
Step-by-step explanation:
An example of a mathematical expression with a variable is 2x + 3. All variables must have a coefficient, a number that is multiplied by the variable. In the expression 2x + 3, the coefficient of x is the number 2, and it means 2 times x plus 3.
