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Fittoniya [83]
2 years ago
14

HELP PLEASE I NEED THIS TO PASS

Mathematics
2 answers:
KatRina [158]2 years ago
5 0

Answer:

X=45

Step-by-step explanation:

X=180-[60+75]=45

Lerok [7]2 years ago
4 0

answer: the sum of all the sides of a triangle=180

75+60+x=180

135+x =180

x =180-135

x = 45

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Step-by-step explanation:

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(x,y) =(

2

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​

,

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b+d

​

).

x=

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2 years ago
On a given day at a local amusement park, 77% of those in attendance rode the roller coaster. There were 1,200 people at the par
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3 years ago
four friends buy tickets for two shows on consecutive nights. They use a coupon for $5 off each ticket. They pay a total of $416
Serjik [45]

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6 0
3 years ago
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F(t)=t^2+19t+60<br> What are the zeros of the function and what is the vertex of the parabola?
SVEN [57.7K]

Answer: -4,-15;\ \left(-\dfrac{19}{2},-\dfrac{121}{4}\right)

Step-by-step explanation:

Given

Function is F(t)=t^2+19+60

Zeroes of the function are

t^2+19t+60=0\\\\\Rightarrow t=\dfrac{-19\pm\sqrt{19^2-4\times 1\times 60}}{2\times 1}\\\\\Rightarrow t=\dfrac{-19\pm \sqrt{121}}{2}\\\\\Rightarrow t=\dfrac{-19\pm 11}{2}\\\\\Rightarrow t=-4,-15

Using completing the square method

y=t^2+2\times \dfrac{19}{2}t+\dfrac{19^2}{2^2}-\dfrac{19^2}{2^2}+60\\\\y=\left(t+\dfrac{19}{2}\right)^2+60-\dfrac{361}{4}\\\\y=\left(t+\dfrac{19}{2}\right)^2-\dfrac{121}{4}\\\\y+\dfrac{121}{4}=\left(t+\dfrac{19}{2}\right)^2\\\\\left(y-(-\dfrac{121}{4}\right)=\left(t-(-\dfrac{19}{2})\right)^2\\\\\text{The vertex is }\left(-\dfrac{19}{2},-\dfrac{121}{4}\right)

4 0
3 years ago
The frequency of the musical note E3 is about 164.81 Hz.
laiz [17]
A perfect fifth above a note has a frequency ratio of 3 to 2.
Therefore, we can set the proportion:
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which gives:
x = <span>164.81 </span>× 3 ÷ 2
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Hence, the perfect fifth above E₃ will have a frequency of 247.21Hz which corresponds to a B₃.
6 0
3 years ago
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