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vovangra [49]
3 years ago
15

Find the value of x.

Mathematics
1 answer:
Doss [256]3 years ago
8 0

Answer:

lakvdhsiysvsbs403735gc sbbsvs s bwhchus

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Which two winding rates represent a unit rate 2/3 of foot per second?
olganol [36]

Answer:

fruiwehwe

Step-by-step explanation:hjhenrefen

3 0
3 years ago
Find the derivative of f(x) = 9x + 5 at x = 7.
Sergeeva-Olga [200]
The derivative of a variable raised to exponent of n, x^n is equal to the product of n and x raised to exponent of n-1.
                                   d(x^n) = (n)(x^n-1)
So, from the given
                                 d(9x + 5) = (1)(9x^1-0)  + 5(0)
                                                = 9
The given value of x is irrelevant to this item because the derivative does not contain any variable x. 
8 0
4 years ago
Read 2 more answers
(1 point) The intensity of light at a depth of x meters below the surface of a lake satisfies the differential equation dIdx=(−1
snow_tiger [21]

Answer:

0.573 m

Step-by-step explanation:

a. To find the depth, x, we first solve the differential equation to find the expression for I  

dI/dx = (-1.21)I

dI = (-1.21)Idx

dI/I = -1.21dx

Integrating both sides, we have

∫dI/I = ∫-1.21dx

㏑I = -1.21x + C

I = exp(-1.21x + C)

I = exp(-1.21x)exp(C) Let exp(C) = A

I =Aexp(-1.21x)

when x = 0, I = L. Substituting these into the equation, we have

L = Aexp(-1.21 × 0)

L = Aexp(0)

L = A

So, I = Lexp(-1.21x)

we want to find x when I = L/2.

So, L/2 = Lexp(-1.21x)

1/2 = exp(-1.21x)

-1.21x= ㏑(1/2)

-1.21x= -㏑2

x = -㏑2/-1.21

x =  0.693/1.21

x = 0.573 m

6 0
3 years ago
Ethane (C2H6) is one of many compounds that burns in oxygen to form carbon dioxide and water, as represented by the equation.
liq [111]

Answer:

Water (H2O)

Step-by-step explanation:

When hydrocarbons undergo combustion reactions (I.e reactions with oxygen) carbon (iv) oxide and water are usually produced.

In this case, the only difference is the numbe of moles between the product and reactant

Equation of reaction;

2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

Reactants:

1. Ethane = C₂H₆

2. Oxygen = O₂

Product:

1. Carbon(iv) oxide = CO₂

2. Water = H₂O

4 0
4 years ago
Can someone please answer. There is a picture. There is only one problem. Thank you so much!!!
madam [21]
Hello,

x²/25+y²/9=1

a=5, b=3 c²=a²-b²=25-9=16=4²

Foci are (0,4) and (0,-4)
Answer C
============
3 0
3 years ago
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