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MrRissso [65]
3 years ago
6

If x = 3, then x^2 = 3x what property

Mathematics
1 answer:
atroni [7]3 years ago
8 0
X=3
(3)^2=3(3)
9=9
true
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krok68 [10]
Reading and Writing ✍
3 0
4 years ago
After sitting in a refrigerator for a while, a turkey at a temperature of 34 degrees F is placed on the counter and slowly warms
Anton [14]

Answer:

  • k = 0.006
  • T = 48 °F

Step-by-step explanation:

The initial temperature difference of 72 -34 = 38 °F is reduced to a difference of 72 -41 = 31 °F after 35 minutes. The exponential term in the temperature expression could have the factor ...

  (31/38)^(t/35) = e^(-kt)

Taking the natural log, we find ...

  (t/35)ln(31/38) = -kt

  k = ln(38/31)/35 ≈ 0.00581711

To the nearest thousandth, this is ...

  k ≈ 0.006

Using this in the equation for temperature, we have ...

  T = 72 -38e^(-0.006t)

Filling in the desired value for t (80), we find the turkey temperature after 80 minutes to be about

  T = 72 -38e^(-.006×80) = 72 -38e^-.48 ≈ 48.49

  T ≈ 48 °F

The value of k is about 0.006, and the turkey temperature is about 48 °F.

4 0
3 years ago
What are the solutions of the equation
Snowcat [4.5K]
C^2 - 10c = 0
c^2 - 10c + 25 = 25
(c - 5)^2 = 25
c - 5 = sqrt 25
c = 5 (+-) sqrt 25
c = 5 (+-) 5

c = 5 + 5 = 10
c = 5 - 5 = 0

solutions are 0,10

3 0
4 years ago
KI's football team was playing against Wunderlich. On the first play the KI lost 8 yards. On the second play the team gained 12
jeka94

Step-by-step explanation:

6 points for the touchdown

4 0
3 years ago
Which pairs of rectangles are similar polygons?
kobusy [5.1K]

the longer side / the shorter side must be the same for rectangles to be similar.

For  A:  105 / 80  =  1.32

For  B:  120 / 90  =  1.33

For  C:  100 / 75  =  1.47

 

So... only  A  and  B are similar.

3 0
4 years ago
Read 2 more answers
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