Answer: 5
Steps:
5x - 2y = 30
5(8) - 2y = 30
40 - 2y = 30
-2y = 30 - 40
-2y = -10
y = -10/-2
y = 5
I would appreciate the brainliest if this answer was correct and the steps were clear and helpful! :)
Question:
Use the expression to complete the statements.

________ is the power
.
(0.5) is the ________
A ______ is another way to write
Answer:
0.5 is the base
10 is the power
-- another way to write
Step-by-step explanation:
Given

Required
Fill ion the gaps
is pronounced as; 0.5 raise to the power of 10
From the above statement, we can deduce the following:
0.5 is the base
10 is the power
Lastly, another way to write 
Express 0.5 as a fraction

Simplify the fraction


Hence:

A ratio indicates how many times one number contains another examples 4:3 2:3
C.) 30h = 180
Since you already have your base all you have to do is find the height
BxH= A
30xH = 180
Answer:
42
Step-by-step explanation:
weight of medals:
30 (0,5) = 15 kg
cost of 5 kg:
28/2 = 14
cost of shipping:
14+28=42