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pickupchik [31]
3 years ago
6

5)

Mathematics
1 answer:
masya89 [10]3 years ago
7 0

Answer:

9.95

Step-by-step explanation:

you add 4 miles + 5.2 miles which is 9.2 miles then u add the 3/4 mile which is .75 in a decimal form which equals 9.95

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Which is the equation for the line perpendicular to y = –5/3 x + 11 1/3 and containing P(–2, 3)?
kati45 [8]
Okay, to answer this question, 
<span>Perpendicular lines have slopes that are inverse of one another and with opposite signs so, 
If a line has a slope of m= -2 than a perpendicular line will have slope m=1/2
If a line has a slope of m= -3/4 than a perpendicular line will have slope m=4/3 If a line has a slope of m= 6 than a perpendicular line will have slope m=-1/6

So, just find the slope of your line, using it, get the slope of the line that will be perpendicular and then just get the equation for a line that has that slope and passes through point (-2,3) using: y - y1 = m(x - x1)
I hope I helped you with my answer</span>
7 0
3 years ago
~~~30 POINTS~~~<br> Please answer these three math questions!
Dominik [7]
9. I think Austin has more rainfall.
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8 0
3 years ago
A substance with a half life is decaying exponentially. If there are initially 12grams of the substance and after 70 minutes the
dybincka [34]

Answer:

Step-by-step explanation:

Use the half life formula

N=N_0e^{kt} where N is the amount after decay, No is the initial amount, e is Euler's number, k is the decay constant, and t is the time in minutes. For us, the first equation looks like this:

7=12e^{k(70)} and we will solve that for k and then use that value of k in the second equation to find time.

Begin by dividing 7 by 12 to get

\frac{7}{12}=e^{k(70)} Now take the natural log of both sides since the natural log and that e are inverses. The e then disappears:

ln(\frac{7}{12})=k(70)

Plug the left side into your calculator and then set it equal to the right side, giving us:

-.5389965007=70k

Divide both sides by 70 to get the k value of

k = -.00769995

Now the second equation looks like this:

2=12e^{(-.00769995)t where t is our only unknown now that we know k.

Begin by dividing both sides by 12 to get

\frac{1}{6}=e^{-.00769995t and take the natural log of both sides again to eliminate the e:

ln(\frac{1}{6})=-.00769995t

Take care of the left side on your calculator to get

-1.791759469 = -.00769995t and divide both sides by -.00769995 to get

t = 232.697 minutes

4 0
3 years ago
Two parallel lines are crossed by a traversal. What is the value of y?
deff fn [24]

Answer:

y = 50 is answers and it is alternate angle

6 0
3 years ago
Read 2 more answers
If f(x)=4 what is x?
kakasveta [241]

Answer:

x = \frac{4}{f}

Step-by-step explanation:

f(x)=4

fx=4

÷f on both sides

x=\frac{4}{f}

7 0
3 years ago
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