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blsea [12.9K]
3 years ago
13

A weather station in Antarctica reports that the temperature is currently -44 °C and has been rising at a constant rate of 4.5 °

C per hour. What will the temperature be in Antarctica in 6 hours
Mathematics
1 answer:
-Dominant- [34]3 years ago
6 0

Answer:

-17

Step-by-step explanation:

4.5*6=27

so -44++27

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A parabola has a vertex at (-2,6) and roots at 7 and m. Find the value of m
Archy [21]

Answer:

So m= - 11

Step-by-step explanation:

* THe vertex is (-2,6), then the equation is y = a(x+2)^2 +6, a is to find out.

* A root is 7 means x=7 and y=0, then :

0 = a(7+2)^2 +6

0=81a+6 or a= -6/81  = -2/27.

* We have the equation: y= -2/27 (x+2)^2 +6=-2/27 [ (x+2)^2-81]

y= -2/27 (x-7)( x+11).

So m= - 11

Hope that you understand.

8 0
3 years ago
If Gina leaves now and drives at 66km/h she will reach Alton just in time for her appointment on the other hand if she has lunch
Stolb23 [73]

Answer:

165km

Step-by-step explanation:

If Gina leaves now and drives at 66km/h she will reach Alton just in time for her appointment

Now:

Distance=Speed X Time

D=66 X t=66t.....(I)

If she leaves in 40 minutes,and she must get there at the same time, her new drive time will be:

t hours - 40 minutes

=(t-40/60)hours=( t-2/3) hours

Her Distance this time

D=90(t-2/3)=90t-60.....(ii)

Since the distance to Alton does not change, we equate (I) and (ii)

66t=90t-60

60=90t-66t

60=24t

t=2.5 hours

From equation (I)

Distance=66t=66X2.5=165km

Distance to Alton is 165km.

3 0
3 years ago
Jasmine set up counters at four major intersections, keeping track of how many cars passed by each on a daily basis over the cou
netineya [11]

Answer:

c is correct i tested it

Step-by-step explanation:

8 0
3 years ago
What is the slope of the line that passes through (2 -- 3) and (-2, 10)
VMariaS [17]

Answer:

13 / -4

Step-by-step explanation:

7 0
3 years ago
4x+15y=10 3x+10y=5<br><br><br><br><br><br><br><br><br><br>please help​
Kamila [148]

Answer: 7x+25y=15

Step-by-step explanation: combine all like terms

8 0
3 years ago
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