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Mariana [72]
2 years ago
7

Y’all i need help on the last one

Mathematics
2 answers:
stira [4]2 years ago
5 0

Answer:

Step-by-step explanation:

Kindly share the exact question

Alex787 [66]2 years ago
3 0
If you send a better picture I can’t really see the last answer
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Kailey buys a greeting card for $3.79. She then buys 3 postcards that all cost the same amount. The total cost is $6.04. How muc
leonid [27]

Answer:

0.75 was how much she paid for each postcard.

Step-by-step explanation:

6.04-3.79

=2.25

so take 2.25 divided by 3

= o.75

equations would be 6.04-3.75=b/ 3

5 0
3 years ago
Oil is pumped continuously from a well at a rate proportional to the amount of oil left in the well. Initially there were 3 mill
abruzzese [7]

Answer:

V' = -0.11552 *V\\= -0.11552(1.8)\\ \\=-0.20794 million per year

Step-by-step explanation:

Given that oil is pumped continuously from a well at a rate proportional to the amount of oil left in the well. Initially there were 3 million barrels of oil in the well; six years later 1,500,000 barrels remain.

i.e. if V stands for volume of oil, then

V' =kV\\dv/V= kdt\\ln V = kt+C\\V = Ae^{kt}

To find A and k

V(0) = A = 3 million

Hence V = 3e^{kt}

V(6) = 1.5

i.e. 1.5 = 3e^{6k}\\ln 1.5 =ln 3 +6k\\k = -0.11552

V(t) = 3e^{-0.11552t}

a) Using the above value of k , we have

V' = -0.11552 *V\\= -0.11552(1.8)\\ \\=-0.20794 million per year.

4 0
3 years ago
The functions fand g are defined as follows.
Rudik [331]

Answer:

hi

Step-by-step explanation:

hi how are you doing?

5 0
3 years ago
Hello :) so I'm horrible at math, but since finals are coming up I want to calculate what my final grade will be if I were to fa
Natalka [10]

Answer:91

Step-by-step explanation:

If the best grade is 100,91 is it.

6 0
2 years ago
Read 2 more answers
The coordinates of point D are (7, 4) and the coordinates of point E are (1, −3) . What is the slope of the line that is perpend
Katarina [22]
The slope of a line is given by the change in y coordinates over the change in x coordinate.
The slope of line DE will be (4 - -3)/ (7-1) = 7/6
If M1 and M2 are slopes of two perpendicular lines at a point then
 M1× M2 = -1
 Thus, the slope of a perpendicular to line DE will be -6/7.
7 0
3 years ago
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