Answer:
Step-by-step explanation:
1). y = - 4x + 7
Reflected across what????
if x-axis, then y ⇒ - y
So the answer would be <em>y = 4x - 7</em>
2). <em>y = 2x - 14</em>
3). <em>y = 2x - 8</em>
4). <em>y = 12x + 9</em>
18 * 5 = 90
90 represents 100%, because there are 5 20% in 100%
In total there are 90 club members
80% = 71 do not have birthdays in the summer.
Answer: $8
Step-by-step explanation: When ordering pizzas there will be an initial fee, followed by the cost per pizza. Call the initial fee f and the cost per pizza p, and you get for the second and first equation respectively; 5p+f=49; 3p+f=33; you subtract these in that order and you get 2p=16 so p =8! Hope this helps!
Answer:
=209.09 mg
Step-by-step explanation:
given: material= radium
half life= 1590 years
initial mass 
=500mg
we know that to calculate the amount left we use
= 
therefore
= 
=209.09058407921 mg
=209.09 mg amount left after 2000 years
The merchandise shop sells 80 CDs for every 1 vinyl record. We have to find how many vinyl records they are likely to sell if the merchandise shop sells 760 CDs:
80 CDs -------------------- 1 vinyl record
760 CDs --------------------- x vinyl records
---------------------------------------------------------
80 : 760 = 1 : x
80 x = 760
x = 760 : 80
x = 9.5 or 9 ( we need a whole number )
Answer: They are likely to sell 9 vinyl records.
