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disa [49]
3 years ago
14

Please can I get an explanation, please!!

Mathematics
1 answer:
nekit [7.7K]3 years ago
7 0

Find the inverse of

y = \left( \dfrac 1 5 \right)^x

For the inverse we swap x and y and solve for y.

x = \left( \dfrac 1 5 \right)^y

Taking logs base 1/5

\log_{1/5} x = y

f^{-1}(x) = \log_{1/5} x

Answer: Second Choice

Note: There's more simplification to do but we'll stop here.

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Solve.<br>a - 6 &gt; 1<br>I need help quick!​
mariarad [96]

Answer: 8

Step-by-step explanation:

8-6 = 2 which is greater

anything above 7 is correct

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3 years ago
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Which expression is equivalent to this expression?<br><br> (-5cd-4)(2cd2)2
GarryVolchara [31]

Answer: If the answer needs to be simplified, then the answer would be

-20c^2 d^3 - 16cd^2

Step-by-step explanation:

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Jada is visiting New York City to see the Empire State building. She is 100 feet away when she spots it. To see the top, she has
Ilia_Sergeevich [38]
(sin(86.10) * 100 ) / (sin(3.90)) = 1466.85 ft.

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3 years ago
The height of a ball thrown vertically upward from a rooftop is modelled by h(t)= -4.8t^2 + 19.9t +55.3 where h (t) is the balls
nikitadnepr [17]

By applying the <em>quadratic</em> formula and discriminant of the <em>quadratic</em> formula, we find that the <em>maximum</em> height of the ball is equal to 75.926 meters.

<h3>How to determine the maximum height of the ball</h3>

Herein we have a <em>quadratic</em> equation that models the height of a ball in time and the <em>maximum</em> height represents the vertex of the parabola, hence we must use the <em>quadratic</em> formula for the following expression:

- 4.8 · t² + 19.9 · t + (55.3 - h) = 0

The height of the ball is a maximum when the discriminant is equal to zero:

19.9² - 4 · (- 4.8) · (55.3 - h) = 0

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19.2 · (55.3 - h) = -396.01

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h = 55.3 + 20.626

h = 75.926 m

By applying the <em>quadratic</em> formula and discriminant of the <em>quadratic</em> formula, we find that the <em>maximum</em> height of the ball is equal to 75.926 meters.

To learn more on quadratic equations: brainly.com/question/17177510

#SPJ1

6 0
1 year ago
What is the area of rectangle ABCD?<br> A)12<br> B)14<br> C)16<br> D)18
blagie [28]

Answer:12

Step-by-step explanation:

4 by 3

so 4x3=12

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