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erma4kov [3.2K]
4 years ago
15

angela fully charged her laptop, then unplugged it and tracked the battery level at certain times under constant use. the table

below shows her findings. find an equation for the line of best fit, then estimate the battery level after two hours of constant use unplugged. What’s the equation we use ? Solution ? Someone please help fast

Mathematics
1 answer:
DochEvi [55]4 years ago
3 0

Answer:

%=-7t

solution -7% per 1:00

Step-by-step explanation:

Hope this helps

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What's the circumference of a circle with a diameter of 12 inches? Use 3.14 for pi
Sloan [31]

Answer:

37.68 inches

Step-by-step explanation:

Circumference = 12 x 3.14

Circumference = 37.68

Hope that helps!

3 0
3 years ago
Consider A = (-9,4) and B (11,17). = Point P₂ partitions the segment from B to A in a 3:5 ratio. Find the coordinates of point P
Bogdan [553]

An easy way to do this is to parameterize the directed line segment from B to A by the function

\ell_{B\to A}(t) = (1-t) B + t A = (1 - t) (11, 17) + t (-9, 4)

with 0 ≤ t ≤ 1.

The point P₂ splits up AB so that BP₂ = 3/8 AB and AP₂ = 5/8 AB. Then we reach the point P₂ when t = 3/8, so its coordinates are

P_2 = \ell_{B\to A}}\left(\dfrac38\right) = \dfrac58 (11,17) + \dfrac38 (-9,4) = \boxed{\left(\dfrac72, \dfrac{97}8\right)}

3 0
2 years ago
Simplify this expression<br>​
anastassius [24]

Answer:

-   \frac{1}{3}  {x}^{4}  -  \frac{4}{7}  {x}^{2}  +  \frac{16}{3}

Step-by-step explanation:

add/subtract the terms with same power of variable

(  \frac{1}{6}  {x}^{4}  -  \frac{1}{2}  {x}^{4} ) + ( -  \frac{ 3}{7} {x}^{2}   -  \frac{1}{7}  {x}^{2} ) + (5 +  \frac{1}{3} )

8 0
3 years ago
Read 2 more answers
How many permutations exist of the letters PQRS and T taking four at a time
lakkis [162]
Looking at the permutation formula, we have n!/(n-r)!. n is the number of objects to select from and r is how many are to be picked at once. And 1 means multiply from there down basically. 5!/(5-4)!= 5*4*3*2*1/1. 5 times 4 is 20 times 3 is 60 times 2 is 120 times 1 is 1 so 120/1 is 120. There are 120 total combinations to be made from P, Q, R, S and T. 

5 0
3 years ago
Read 2 more answers
What is the measure of ZB?​
r-ruslan [8.4K]

Answer:

b = 28

Step-by-step explanation:

131 + 21 + b = 180

152 + b = 180

b = 28

6 0
3 years ago
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