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snow_tiger [21]
1 year ago
7

What’s the sun of -6 4/5 and 6 4/5

Mathematics
2 answers:
Rainbow [258]1 year ago
7 0

Answer:

the answer is 0.

Step-by-step explanation:

When you are adding two of the same numbers together, and one of them is positive while the other is negative, they cancel each other out.  

finlep [7]1 year ago
4 0

\huge\textbf{Hey there!}


\mathsf{-6 \dfrac{4}{5} + 6 \dfrac{4}{5}}

\mathsf{= \dfrac{-6 \times 5 + 4}{5}+ \dfrac{6 \times 5 + 4}{5}}

\mathsf{= \dfrac{-30 + 4}{5}+ \dfrac{30 + 4}{5}}

\mathsf{= \dfrac{-34}{5} + \dfrac{34}{5}}

\mathsf{= 0}


\huge\textsf{Therefore, your answer should be: \boxed{\mathsf{0}}}\huge\checkmark


\huge\textbf{Good luck on your assignment \& enjoy}\\\huge\textbf{your day!}


~\frak{Amphitrite1040:)}

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Does anyone know the answer?I am stuck? Please explain it to me!
9966 [12]
We are given the length of AC and AB to be 20 and 6, respectively, so we can subtract 6 from 20 to find BC to be 14 cm.

The circumference of a circle is equal to 2 \pi r

C=2 \pi (14) = 28 \pi

The answer is approximately 87.96 cm
7 0
3 years ago
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Arnold records the number of chirps per minute (x) that crickets make
Sauron [17]

Answer:

X=0 the temperatures is 40

Step-by-step explanation:

y=1/4x +40

x=0

y=1/4*0+40

y=0+40

y=40

7 0
3 years ago
I really need help
Zielflug [23.3K]

Answer:

The answer is (C)

The equation of the circle is (x + 4)² + (y - 6)² = 81

Step-by-step explanation:

* To find the equation of the circle you need to know

  the center of the circle and the length of its radius

* The rule of the equation of the circle is:

  (x - h)² + (y - k)² = r²

  Where x and y is a general point on the circle,

  h and k are the coordinates of the center of the circle

  and r is the radius of the circle

∵ The center of the circle is (-4 , 6)

∵ The radius of the circle is 9

∴ (x - -4)² + (y - 6)² = 9²

∴ ( x + 4)² + (y - 6)² = 81

∴ The answer is (C)

3 0
3 years ago
9. Determine how long it takes for 80% of the material to decay.
Vilka [71]

Using an exponential function, it is found that it takes 18.6 days for 80% of the material to decay.

The amount of a substance after t days is modeled by:

A(t) = A(0)e^{-kt}

In which:

  • k is the decay rate, as a decimal.
  • A(0) is the initial amount.

The half-life is of 8 days, hence A(8) = 0.5A(0), and this is used to find k.

A(t) = A(0)e^{-kt}

0.5A(0) = A(0)e^{-8k}

e^{-8k} = 0.5

\ln{e^{-8k}} = \ln{0.5}

-8k = \ln{0.5}

k = -\frac{\ln{0.5}}{8}

k = 0.08664339757

Hence:

A(t) = A(0)e^{-0.08664339757t}

The time it takes for 80% of the material to decay it t for which A(t) = 0.2A(0), hence:

0.2A(0) = A(0)e^{-0.08664339757t}

e^{-0.08664339757t} = 0.2

\ln{e^{-0.08664339757t}} = \ln{0.2}

-0.08664339757t = \ln{0.2}

t = -\frac{\ln{0.2}}{0.08664339757}

t = 18.6

It takes 18.6 days for 80% of the material to decay.

To learn more about exponential functions, you can take a look at brainly.com/question/24906920

5 0
2 years ago
Which of the following is the inverse of y=3x?
shtirl [24]

Answer-

<em>The inverse of y=3^x is </em>

\boxed{\boxed{y=\log_3 x}}

<u>Solution-</u>

The given function is,

y=3^x

We can get the inverse by interchanging he variable x and y among themselves and then separating each variables.

So in the inverse would be,

\Rightarrow x=3^y

Taking log of both sides,

\Rightarrow \log x=\log 3^y

As,

\log a^b=b\times \log a

Applying the same,

\Rightarrow \log x=y\times \log 3

\Rightarrow y=\dfrac{\log x}{\log 3}

As,

\log_b a=\dfrac{\log a}{\log b}

Applying the same,

\Rightarrow y=\log_3 x

Therefore, the inverse of y=3^x is y=\log_3 x.

7 0
3 years ago
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