Answer:
5m-50
Step-by-step explanation:
Let Diego current age be x,
Given that Diego’s current age is five times Martina’s age ten years ago
Martina current age = m years
10 years ago Martina's age = m-10
Hence we have
x = 5(m-10) = 5m-50
So we find that Diego's current age can be expressed in terms of m as
Deigo's current age= 5m-50
Verify:
Deigo current age = 5m-50
Hence Martina age 10 years ago = 5m-50 divided by 5 = m-10
Martina current age = m-10+10 = m
Verified.
Answer:
25
Step-by-step explanation:
x = the number
2x - 7 = 43
+7 +7
-----------------
2x = 50
------------
2 2
<u>x = 25</u>
Putting this in mathematical terms
(-5)x/2-5=-55
Multiplying throughout by ‘-1’
(5x)/2+5=55
5x/2=50
x=+20
Thus 20 is the required value of x.
Answer:
H0: the new commercial increases brand recognition
Step-by-step explanation:
The null hypothesis is a statement about the given population of interest which is believed to be true and a contradiction of the alternative hypothesis.
In this question, we are testi whether a new commercial increases brand recognition. So the null hypothesis,
H0 would be,
The new commercial increases brand recognition