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Karo-lina-s [1.5K]
3 years ago
8

Please could someone help the problem is on the picture. ( Idk if this is right but I think the answer is 50%?

Mathematics
1 answer:
never [62]3 years ago
3 0

Answer:

20%

Step-by-step explanation:

If he lowers it by 20% to get the sale price then he must raise it 20% to get the retail price

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Integrate with respect to x <br><br> 1/√(1-2x)
Ilia_Sergeevich [38]

Answer:

-√(1 - 2x) + C

Step-by-step explanation:

1/√(1-2x)

We want to integrate it. Thus;

∫1/√(1 - 2x) dx

Let u = 1 - 2x

Thus;

du/dx = -2

Thus, dx = -½du

Thus,we now have;

-½∫1/√(u) du

By application of power rule, we will now have;

-½∫1/√(u) du = -√(u) + C

Plugging in the value of u, we will have;

-√(1 - 2x) + C

3 0
3 years ago
A population of flies grows according to the function p(x)=6(3)^x, where x is measured in weeks. A local spider has set up shop
Doss [256]
The final population of the flies is equal to the growth rate minus the number of flies consumed by the spiders. That is,
                          final population = 6(3^x) - (4x + 1)
Substituting 2 to the x of the equation above,
                         final population = 6(3²) - (4(2) + 1) = 45
Thus, the final population of the flies would be 45. 
7 0
2 years ago
Solve using ELIMINATION (with step by step explanation) Please<br><br> 3x+y=-9<br> y=5x+7
Yuki888 [10]

Answer:

<h2>x = -2 (verified by algebra) ✅</h2>

Step-by-step explanation:

Since we are given the value of y, we can replace it with 5x + 7.

We now have: 3x + 5x + 7 = -9

We can now simplify by adding 3x and 5x to get 8x.

8x + 7 = -9

We can subtract 7

8x = -16

And now, we divide by 8

x = -2

We can check to make sure we are correct

3(-2) + 5 (-2) + 7 = -9

-6 + -10 + 7 = -9

-9 = -9 ✅

7 0
3 years ago
5 1/3 expressed in percent is
Dvinal [7]

Answer:

533.3%

Step-by-step explanation:

simplify the fraction to 16/3 (3x5+1=16)  then you multiply the fraction by 100

which is 533.3 or 533 1/3 %

7 0
2 years ago
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