The possible numbers that Melody could have picked are -4 and 4.
The operation that prevents us from knowing with 100% certainty the number Melody had picked is multiplication which is implied by the phrase "double the number".
Given, Let x be the number Melody had chosen.
Thus, tripling the number will give 3x, and
squaring this will result to (3x)² which is equals to 9x².
Dividing the square of the number by 2 and subtracting 30 from its quotient will give 42:
9x²/2 ₋ 30 = 42
9x²/2 = 42 ₊ 30
9x²/2 = 72
9x² = 72 × 2
9x² = 144
x² = 144/9
x² = 16
x = ±√16
x = ±4
x = ₊4 or x = 4
hence melody could have picked ₊4 or ₋4 numbers.
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Answer:
The equation of the least-squares regression line for this plot is approximately ŷ = 3.8 + two thirds times x.
Step-by-step explanation:
Answer:
13:35 (01:35)
Step-by-step explanation:
60-13= 47
6:47
+6:48
∴ Add 48 and 47 = 95 mins
so, 95- 60= 35 mins
The extra 60 mins (1 hr) is added to the hours on the left.
so, 6+1= 7 and then 7+6 = 13
∴ 13:35 pm , which can also be written as 01:35 pm in 12-hr-clock format.
Answer:
Step-by-step explanation:
The simple interest formula is equal to
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest
t is Number of Time Periods
step 1
Find the number of time periods t
in this problem we have
substitute in the formula above and solve for t
step 2
what will Rs 600 amount to at 11% in same time?
we have
substitute in the formula
Answer:
(-infinity,+infinity)
Step-by-step explanation:
Domain refers to the x-axis. So if we look from left to right along the x-axis we could conclude that the function will go infinitley from negative infinite to positive infinity.