We need to write the linear equation that is satisfied by (20,13) and (30,18).
$18 - $13 $5
The slope is m = --------------- = -------- = $0.50/mile
30 - 20 10
We need to find the y-intercept of this function. To do that, start with the slope-intercept form y = mx + b
and subst. the y and x values from one of the two given points. Suppose we choose (20,$13):
$13 = ($0.50/mile)(20 miles) + b
Then $13 = $10 + b, and b = $3.
There's an up-front charge of $3 just to step into the taxi.
The equation in question is y = ($0.50/mile)x + $3.00 (answer)
The answer to this is 68.7
The tenths place is the first term right after the decimal point. We see a "6" there. Look the number right after that. There is a "9". Since 9 is greater than 5, we round up the "6" to "7".
I hope this helps you
839-56=783
Answer:
-4 cot (-45)
Step-by-step explanation:
cos (390)
sin (330)
Cross multiplication will help with this! Since someone with 104 pounds is given a specific amount of medicine but another person with unknown pounds but known medicine is given, cross multiplication is helpful.
We can make it into a fraction, say pounds/milligrams
104 lbs/130mg=x (because it is unknown) lb/278.75
Then we can multiply it by crossing both sides.
130x=104(278.75)
130x=28990 Isolate x by dividing by 130
x=223
The person is 223 pounds who needs 278.75 mg of medicine.
