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myrzilka [38]
3 years ago
12

TEST

Mathematics
1 answer:
inysia [295]3 years ago
5 0
The answer to this is c
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A sound engineer is positioning a cardioid microphone for a music concert. Which equation corresponds to a microphone facing the
Flura [38]

Answer:

D r = 4 − 4 cos(θ)

Step-by-step explanation:

Right on edge

5 0
3 years ago
Which of the following functions represents an exponential decay with a 15% rate of change where A represents the initial value
melisa1 [442]

The function that represent this exponential decay is given as y = A(0.85)ˣ

<h3>What is an exponential function?</h3>

An exponential function is in the form:

y = abˣ

Where a is the initial value and b is the multiplication factor.

Given that A is the initial value, there is a decay of 15%, hence:

b = 100% - 15% = 0.85

The function that represent this exponential decay is given as y = A(0.85)ˣ

Find out more on exponential function at: brainly.com/question/12940982

3 0
2 years ago
PLEASE HELP!!! ITS TWO PARTS
tresset_1 [31]

Answer:

$78, $79.20

Step-by-step explanation:

PART A: $60 times 1.3 = $78

you add 30% to 100% to get 130% since it is a mark up, and then you convert to a decimal by going to the left twice then multiplying by original price.

PART B

Since it is a discount you subtract 15 percent from 100, but then add back 5 percent since there is tax applied to get 90%, convert to decimal and multiply by original price to get $88 x .9 = $79.20

6 0
3 years ago
Transform the equation to isolate x: ax=bx+1. How is the value of x related to the difference of a and b
nasty-shy [4]

Answer:

x is the reciprocal of the difference of a and b.

Step-by-step explanation:

ax=bx+1

Subtract by bx on both sides

ax-bx=1

x(a-b)=1

x= 1/(a-b)

8 0
2 years ago
Read 2 more answers
Write the expression x^-5 in positive exponential form <br> Answer for brainliest!
vladimir1956 [14]

It's 1/x^5

Hope it helps

8 0
3 years ago
Read 2 more answers
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