Answer:
y + 5 = -2(x - 7)
Step-by-step explanation:
The slope of the line y = (1/2)x + 4 is 1/2. Any line perpendicular to this one will have a slope which is the negative reciprocal of 1/2: -2.
Using the point-slope form, the desired equation is:
y + 5 = -2(x - 7)
Answer:

Step-by-step explanation:
Temperature in the room 
Decrease in the temperature(outdoors)
in
.
Rate of decrease

(a) After

But it is not possible as outdoor temperature is
so after
temperature decrease will not occur.
Hence after
more minutes temperature=
(b) Let after
temperature is 
Here 

Answer:
He has to run a total of 12 miles and has 3 more miles to run
Step-by-step explanation:
Well we know that 3/4 is 9 out of the total miles he is willing to run. We can divide 9 by 3 to get 1
Now we know 1/4 of his run is 3 miles
3*4= 12
He has to run a total of 12 miles and has 3 more miles to run
The product of the number and 500 will be 2100000.
<em><u>Explanation</u></em>
Suppose, the number is 
The number is 42,000 when multiplied by 10. So, the equation will be......

So, <u>the number will be 4200</u>
Now, the product of this number and 500 will be: 
Answer:
Use the distance formula to determine the distance between two points.
Exact Form:
4
√
10