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Anit [1.1K]
3 years ago
15

Determine if

ass="latex-formula"> - 8m + 16 is a perfect square trinomial and factor.
Mathematics
1 answer:
I am Lyosha [343]3 years ago
4 0
M² - 8m + 16 =
m² - 2*4*m + 4² =
(m-4)²
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the pie factory sells an apple pie with a diameter of 16 in. for $10.99. What's the approximate cost per square inch of surface
AURORKA [14]
I'm going to assume the crust covered by the dosenot matter because the total surface area cannot be found without the depth of the pie.

So the surface are is the area of the top of the pie, the top of the pie is circular and is equal to 2\pir²

The diameter is the sum of 2 radii, hence r=8

D=12
  = 2r =12
r=8

With the raduis the area can be found
A= 2\pir²
A=2\pi8² 
A=2(64)\pi
A=128\pi

If the pie cost 10.99, the cost per inch can be found by dividing the area by cost

cost/inch =128 \pi/10.99
cost/inch =11.64\pi
               = 11.64(3.14)
               = 36.57

The pie costs 36 cents per square inch
5 0
3 years ago
Correlation is a measure of the direction and strength of the linear (straight-line) association between two quantitative variab
MariettaO [177]

Answer:

D

Step-by-step explanation:

The correlation coefficient r=-0.84 denotes that there is inverse relationship between x and y. It means that as the x values increase the y values decrease whereas as the x values decreases the y-values increases. Also, r=-0.84 denotes the strong relationship between  x and y because it is close to 1. So, r=-0.84 denotes that there is strong linear relationship between x and y with smaller x values tending to be associated with larger y values.

7 0
3 years ago
Sixteen added to a number is equal to forty. Find the number.
FinnZ [79.3K]

Answer:

The number is 24

Step-by-step explanation:

Let x = number

Add 16 to the number

x+16

Is equal to 40

x+16 = 40

Subtract 16 from each side

x+16-16 = 40-16

x = 24

6 0
3 years ago
what is the molariry of a solution that contains 1.22 mol of hydrogen chloride if the total volume of the solution is 1,251 mL?
hichkok12 [17]

Your molarity would be 0.975 M HCl because it’s moles of solute divided by liters of solvent

7 0
3 years ago
Read 2 more answers
Can you help with #6
ludmilkaskok [199]
If i simplify number 6 it would be -55/63
5 0
3 years ago
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