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astra-53 [7]
3 years ago
5

Could someone pls help?

Mathematics
1 answer:
Elden [556K]3 years ago
5 0
12%









She Henie tjebrirbid
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What equation relates a and s to the total of 50 tickets sold?
kirza4 [7]
The answer is 105+5a=50
7 0
3 years ago
Shaggy earned an average of $112 per day for solving mysteries last week Monday through Friday. What was Shaggy total earnings l
kati45 [8]

112 x 5=560

Hay que multiplicar 112 x 5 y listo.

4 0
3 years ago
If f(y) = e^(9y) + e^(-9y), find f'(y). Use exact values.
Westkost [7]

Given:

f(y)=e^{9y}+e^{-9y}

To find:

The f'(y).

Solution:

Chain rule of differentiation:

[f(g(x))]'=f'(g(x))g'(x)

Differentiation of exponential:

\dfrac{d}{dx}e^x=e^x

We have,

f(y)=e^{9y}+e^{-9y}

Differentiate with respect to y.

f'(y)=e^{9y}\dfrac{d}{dx}(9y)+e^{-9y}\dfrac{d}{dx}(-9y)

f'(y)=e^{9y}\cdot 9(1)+e^{-9y}\cdot (-9)(1)

f'(y)=9e^{9y}-9e^{-9y}

Therefore, the differentiation of the given function is f'(y)=9e^{9y}-9e^{-9y}.

5 0
3 years ago
What is the solution to the system of equations x - y=5 and 3x + 7y =
Setler [38]

Answer:

I could help you, but first-

are you missing an number at the end of "3x+7y=" ?

3 0
4 years ago
A parabola has its vertex at (2, 2), and the equation of its directrix is y = 2.5. The equation that represents the parabola is
Xelga [282]

Answer:

In vertex form the equation is y=-\frac{1}{2}(x-2)^2+2

In standard form the equation is y=-\frac{1}{2}x^2+2x

Step-by-step explanation:

The equation of the directrix tells us that this is an x-squared parabola.  Because the directrix is above the vertex, the parabola will open downward.  The vertex form of this equation is:

4p(y-k)=-(x-h)^2

where p is the number of units between the directrix and the vertex.  The number of units here is .5 or 1/2.  Filling in the coordinates of the vertex and the p value of 1/2:

4(.5)(y-2)=-(x-2)^2

Simplifying we have:

2(y-2)=-(x-2)^2

Divide both sides by 2 to get:

y-2=-\frac{1}{2}(x-2)^2

Add 2 to both sides to get the final vertex form:

y=-\frac{1}{2}(x-2)^2+2

If you want that in standard form, you first need to expand the squared term to get:

y=-\frac{1}{2}(x^2-4x+4)+2

Order of operations tells us that we have to distribute in the -1/2 first to get:

y=-\frac{1}{2}x^2+2x+2-2

which simplifies to the standard form:

y=-\frac{1}{2}x^2+2x

5 0
3 years ago
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