Answer:
Hope that helps
Step-by-step explanation:
b) two pairs that are solutions
x>=-4
x>=-4x<=1
-4<=x<=1
two pairs that are not solutions
-18<x<-13
Answer:
a) Two half lives, b) 
Step-by-step explanation:
a) The polonium-210 has a half life of 138.4 days. Therefore, 1.994 half lives have past.
b) Mass decay is described by the following exponential model:
The time constant for the isotope is:
The mass of the isotope after 276 days is:
Answer:
88 u²
Step-by-step explanation:
The formula for the area of a trapezoid is:
A = 
where h = height and 
=length of one base and 
=length of the other base.
Given the measurements in the diagram:
h = 4 units
= 17 units
= 17 + 5 + 5 = 27 units
Plug them into the equation: A = 
(4)(17 + 27) = 88 units²
9514 1404 393
Answer:
D. If a sum of two numbers is multiplied by a factor, you can multiply each number by that factor and then add the products.
Step-by-step explanation:
The point of the distributive property is that it allows multiplication to be distributed over addition. That is, ...
a(b +c) = ab +ac
The product of a factor and a sum is the same as the sum of the products of that factor with each of the elements of the sum. This is expressed in statement D.
__
Statement A refers to the commutative property of multiplication.
Statement B is a restatement of the multiplication rule in the "order of operations."
Statement C refers to the associative property of multiplication.
Statement D is a restatement of the distributive property.
Answer: the equation is 6+5x=3x+10.
Step-by-step explanation:
to find the number
add 5x+3x
then add 10+6
8x=16
divide by 2 each side.
x=2
