Answer should be b, not 100% sure
Answer:
The given statement Y = 7, x = 4 is False.
Step-by-step explanation:
We are given:
Y is inversely proportional to x, when Y = 7, x = 4.
We need to tell if the statement is True or False: the constant of proportionality, k, is 20.
Y is inversely proportional to x
We can write it as: 
Now, we need to check when Y=7, x = 4 is true or false
We are given k = 20
Now, I can find value of y, by putting values of k and x in the equation:

When we put x = 4, and k =20, we get Y=5 and not Y=7
So, The given statement Y = 7, x = 4 is False.
Answer:
4
Step-by-step explanation:
4=x
5x+7 =27
27=27
:(((
Answer:
Step-by-step explanation:
sorry but i dont get it its there a LIKEEE problem to answer
The percentage of price of mangoes was increased by 15% from November to January.
<u>Step-by-step explanation:</u>
- The price of mangoes in November = $12 per kilo
- The price of mangoes in January = $18 per kilo
- The cost has been increased from $12 to $18.
Therefore, the change in percentage is percentage increase.
Percentage increase = (difference between two prices / lower price) × 100
⇒ (18-12 / 12) × 100
⇒ (6 / 12) × 100
⇒ 50 %
Therefore, the percentage change from November to January is increase of 50 %.