Answer:

Step-by-step explanation:



The answer is D
16.55 divide by 2= 8.275
8.275+8.275+16.55+16.55=49.65
3 because the x value has been repeated
So 5.10 is 100% and 0.57 is x%
percent means parts out of 100
5.10/100%=0.57/x% since they are equal (exg 2/4=3/6)
5.10/100=0.57/x
multipy both sides by x/0.57 to clear fraciton
(5.1x)/57=1
multiply both sides by 57 to get rid of the denomeator (bottom number
5.1x=57
divde both sides by 5.1
x=11.1765
increase of 11.2%
( an easy way is (0.57/5.1) times 100)
Answer
1.8/125 cm³
2. 13
3a. x³-17
3b. 3x-5
5. A) Power
Step-by-step explanation:
1. (2/5)³= 2/5 * 2/5 * 2/5
= 4/25 *2/5
=8/125
2. b³+(10-a)
= (2)³ + (10-5)
=(2*2*2) + (5)
= 8 + 5
= 13
3a. a number cubed = x³
seventeen less than = -17
3b. three times a number = 3x
five = 5
5. product is when two values are multiplied (13 and 3+x)