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kvasek [131]
3 years ago
5

If y=3x^3-2x and (dx)/(dy) = 3, find (dy)/(dt) when x=-2​

Mathematics
1 answer:
lesya692 [45]3 years ago
4 0

Answer:

dy/dx = 9x²+2

dy = (9x²+2) dx

dy/dt = (9x²+2) dx/dt

if x = 2 and dx/dt=5 then

dy/dt = (9*2²+2)*5 = 38*5 = 190

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An architect designs a rectangular flower garden such that the width is exactly two-thirds of the length. If 340 feet of antique
KIM [24]

Answer:

The dimensions of the garden is 102 feet by 68 feet

Step-by-step explanation:

Here, we want to get the width and length of the garden

The perimeter is represented by the length of the fencing

From the question;

w = 2l/3

The formula for the perimeter is;

P = 2(l + w)

Thus;

340 = 2(l + 2l/3)

170 = (l + 2l/3)

Multiply through by 3

510 = 3l + 2l

5l = 510

l = 102 feet

w = 2/3 * l

w = 2/3 * 102

w = 68 feet

7 0
3 years ago
Look at the tree diagram for tossing a coin three times. Find the probability of getting exactly two tails.
lana66690 [7]

Answer:

3/4

Step-by-step explanation:

use a calculator

6 0
3 years ago
The graph below could be the graph of which exponential function?
IgorLugansk [536]
B is the answer your welcome
8 0
2 years ago
Write 6 as a fraction with 3 in the denominator
tekilochka [14]
To find the correct fraction, multiply 6 by 3.
This gives you 18. Therefore the fraction is 18/3
Hope this helps!
6 0
3 years ago
Read 2 more answers
The perimeter of a rectangular field is 354 yards. If the width of the field is 82 yards, what is its length
GenaCL600 [577]
Length is 95 yards.

The perimeter of a rectangle is the sum of four sides. The four sides are either its length or width.

A rectangle has four sides where its angles are all right angles and its opposite sides are congruent or of equal size.

Perimeter = 2length + 2width ==> P = 2L   + 2W

354 = 2L + 2(82)
354 = 2L + 164
to get the length. we must transfer all like signs.
2L = 354 - 164
2L = 190
2L / 2 = 190 / 2
L = 95 yards.
4 0
3 years ago
Read 2 more answers
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