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Elodia [21]
3 years ago
7

Need help with this pls!! (Show work pls)

Mathematics
1 answer:
Gekata [30.6K]3 years ago
5 0

Answer:

marks wage is 12$ and he earned 72$

Stevens wage is 15$ and earned 75$

Step-by-step explanation:

5(x+3)+6x=147\\5x+6x+15=147\\11x=132\\x=132/11\\x=12

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Trigonometric Identities and Applications? help
Vadim26 [7]
\bf h=-15cos\left( \frac{2\pi }{5}t \right)\qquad \boxed{h=8}\qquad 8=-15cos\left( \frac{2\pi }{5}t \right)
\\\\\\
\cfrac{8}{-15}=cos\left( \frac{2\pi }{5}t \right)\implies cos^{-1}\left(  \frac{8}{-15}\right)=cos^{-1}\left[ cos\left( \frac{2\pi }{5}t \right) \right]
\\\\\\
cos^{-1}\left(  \frac{8}{-15}\right)=\cfrac{2\pi }{5}t\implies \cfrac{5}{2\pi }\cdot  cos^{-1}\left(  \frac{8}{-15}\right)=t\\\\
-------------------------------

\bf cos^{-1}\left(  \frac{8}{-15}\right)=\stackrel{radians}{\stackrel{II~quadrant}{\approx 2.13}~~,~~\stackrel{III~quadrant}{\approx 4.15}}\qquad \qquad 
t=
\begin{cases}
\frac{5}{2\pi }\cdot 2.13\\\\
\frac{5}{2\pi }\cdot 4.15
\end{cases}
3 0
3 years ago
Q7Which statement is incorrect for the graph of thefunction y = -5 cosGcos( 3 (x – 3)) +62The period is 4.The amplitude is 3.The
guajiro [1.7K]

The given function is,

y=-5\cos (\frac{\pi}{2}(x-3))+6

The graph can be drawn as,

The period will be distance between two consequetive maximas,

\text{Period}=1-(-3)=4

Thus, period is correct.

The amplitude can be determined as,

\begin{gathered} Amplitude=\frac{\max -\min }{2} \\ =\frac{11-1}{2} \\ =5 \end{gathered}

Thus, amplitue is incorrect.

The range is,

y\in\lbrack1,11\rbrack

Thus, the range is correct.

The midline is,

\begin{gathered} \text{midline}=\frac{\max +\min }{2} \\ =\frac{1+11}{2} \\ =6 \end{gathered}

Thus, the midline is correct.

Thus, option (b) is the solution.

5 0
1 year ago
What is the y-intercept of the graph that is shown below?
Gnoma [55]

Answer:

(0,4)

Step-by-step explanation:

The y intercept is where the x value is zero

x=0 and y =4

The y intercept is (0,4)

7 0
3 years ago
Rectangle ABCD is congruent to rectangle. Which sequence of transformations could have been used to transform rectangle ABCD to
il63 [147K]
Rectangle ABCD was rotated 90° counterclockwise around the origin and then translated 8 units down.
7 0
3 years ago
What is 2 1/4 equal to
Crazy boy [7]

Answer:

2.25

Step-by-step explanation:

divide

5 0
2 years ago
Read 2 more answers
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