Answer:
1.)16
2.)10.5
Step-by-step explanation:
Answer:
23.9 (rounded)
Step-by-step explanation:
First find the mean of all the numbers
this is 79.3
then find the distance from every number from the mean
15- 64.3
60- 19.3
90- 10.7
90- 10.7
100- 20.7
100- 20.7
100- 20.7
then find the average of the distances
which is 23.9
hope this helps
Answer:
Difference in temperature = 25°C
Step-by-step explanation:
Given:
Temperature 1 = -51°C
Temperature 2 = -76°C
Find:
Difference in temperature
Computation:
Difference in temperature = Temperature 1 - Temperature 2
Difference in temperature = -51°C - [-76°C]
Difference in temperature = -51°C + 76°C
Difference in temperature = 25°C
I'm pretty sure you are looking for factored forms as an equivalent equation, so here is how you do it.
This equation would be solved by difference of squares. 16, x^4, and 81 are all perfect squares ( which means that it is a number multiplied by itself, 16 is 4 x4 for example). So the first thing you want to do is recall the formula which is
(a^2 - b^2) = (a - b)*(a + b)
(16x^4 - 81)= 0
Find the sq. root of 16 which is 4, and of x^4 which is x^2, and 81 which is 9. Now re write it in the (a - b)*(a + b) format. ----> (4x^2 - 9)*(4x^2 + 9) = 0
