10. 4w^2 + 7w^2 + 7z^2
Combine each term with the same variable.
11w^2 + 7z^2
This is in simplest form.
11. 3x + 4(5x + 2)
Multiply each term inside the parentheses by 4.
3x + 20x + 8
Combine all the terms with the same variable.
23x + 8
This is in simplest form.
They do not mean the same thing:
4 in 4000 stands for 4 thousands
4 in 400 stands for 4 hundreds
In this case:
You can see, that first '4' means 4 000, while the second one means 400, so the first one is 10 times greater.
Answer:
75
Step-by-step explanation:
let the number of texts equal T
total amount charged by talk company - 15 + 0.1T
total amount charged by mobile service = 0.3T
we are to find the number of texts that would make the charges equal
15 + 0.1T = 0.3T
Collect like terms
15 = 0.3T - 0.1T
15 = 0.2T
T = 15/0.2 = 75
Answer:
Step-by-step explanation:
WX = 23 – 2x,
TV = 64 – 10x,
First, create an equation you will use to find the value of x.
Thus:
(midsegment theorem of a ∆)
(substitution)
Multiply both sides by 2
Collect like terms
Divide both sides by -6
Find TV:
Plug in the value of x