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nadya68 [22]
3 years ago
10

A sound engineer is positioning a cardioid microphone for a music concert. Which equation corresponds to a microphone facing the

correct direction? O r = -4 + 4 sin(0) O r = 4 - 4 sin(0) O r = -4 + cos(0) Acos Or = 4 - 4 cos(0)​
Mathematics
1 answer:
Flura [38]3 years ago
5 0

Answer:

D r = 4 − 4 cos(θ)

Step-by-step explanation:

Right on edge

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Sin(5x) cos(3x)-1/2sin(8x) = sin(x) cos(x)
aleksandrvk [35]

Answer:

x=70

Step-by-step explanation:

7 0
3 years ago
A bookstore is having a sale in which customers can purchase 6 books for a price of b dollars. Which expression represents the p
Evgen [1.6K]
That would be 6/b <====
5 0
3 years ago
Find a solution to the linear equation −2x−2y=8 by filling in the boxes with a valid value of x and y.Provide your answer below:
inna [77]

Given

-2x-2y=8

To find a solution for the linear equation, the first step is to write the equation in slope-intercept form:

-Pass the x-term to the right side of the equation by applying the opposite operation to both sides of the equal sign:

\begin{gathered} -2x+2x-2y=8+2x \\ -2y=2x+8 \end{gathered}

-Divide both sides by -2:

\begin{gathered} \frac{-2y}{-2}=\frac{2x}{-2}+\frac{8}{-2} \\ y=-x-4 \end{gathered}

Once you have expressed the equation of the line in slope-intercept form, replace it with any value for x and calculate the corresponding value of y, for example, x=2

\begin{gathered} y=-(2)-4 \\ y=-2-4 \\ y=-6 \end{gathered}

One solution for the linear equation is x=2 and y=-6, you can check the solution by replacing the values on the original equation, with both values the result should be 8:

\begin{gathered} -2x-2y \\ -2\cdot2-2\cdot(-6) \\ -4+12=8 \end{gathered}

As you can see the values are a valid solution for the linear equation.

So the solution is:

-2(2)-2(-6)=8

6 0
1 year ago
Solve 19.9 = 9 y - 8.<br> Y=
Savatey [412]
The answer would be y = 3.1

19.9 + 8 = 9y

27.9 = 9y

27.9/9 = y

3.1 = y

y = 3.1.
3 0
3 years ago
A square pyramid is shown. What is the surface area? A 6.75 cm2
lions [1.4K]
It will be 6.75 cm2 because if you multiply 1.5 and 3 you get 6.75
7 0
3 years ago
Read 2 more answers
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