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tigry1 [53]
3 years ago
14

Hey, Whats The answer please explain your answer marking brainliest:D...

Mathematics
1 answer:
lina2011 [118]3 years ago
7 0
I believe the answer is A because it doesn’t make sense lol.
and number b makes sense because if you distribute you’d get 2x+2
number c makes sense as well because no matter the value of x there will be addition in the equation
and number d also shows that the question is equivalent because any value of x makes them equivalent for example pretend x=5 2(5+1) —> 2(6) = 12
2(5) + 2—> 10+2= 12
Therefore the expression is equivalent
and the best answer to this question is A
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If f(x)=x^2-11x+18 what are the zeros of the function?
UkoKoshka [18]
X= 9 x=2
-2 × -9=18
-2 + -9= -11
8 0
3 years ago
Situation:A researcher in North America discoversa fossile that contains 65% of its originalamount of C-14..-ktN=NoeNo inital am
zheka24 [161]

SOLUTION

We have been given the equation of the decay as

\begin{gathered} N=N_0e^{-kt} \\ where\text{ } \\ N_0=initial\text{ amount of C-14 at time t} \\ N=amount\text{ of C-14 at time t = 65\% of N}_0=0.65N_0 \\ k=0.0001 \\ t=time\text{ in years = ?} \end{gathered}

So we are looking for the time

Plugging the values into the equation, we have

\begin{gathered} N=N_0e^{-kt} \\ 0.65N_0=N_0e^{-0.0001t} \\ e^{-0.0001t}=\frac{0.65N_0}{N_0} \\ e^{-0.0001t}=0.65 \end{gathered}

Taking Ln of both sides, we have

\begin{gathered} ln(e^{-0.000t})=ln(0.65) \\ -0.0001t=ln(0.65) \\ t=\frac{ln(0.65)}{-0.0001} \\ t=4307.82916 \end{gathered}

Hence the answer is 4308 to the nearest year

8 0
9 months ago
sandra bought 120 square feet of carpet for her room in her house. if the room is a square, what is the side length of each side
fenix001 [56]
√120 ≈ 10.95
and 10.95²≈ 120 
therefore each side of this square room is about 10.95 feet.
8 0
3 years ago
An ice cream shop uses 4 pints of ice cream to make 6 sundaes how many pints of ice cream are used for each sundae
dsp73
0.666• To get the answer you divided 4 by 6.

4÷6=0.6666
3 0
3 years ago
A function is shown below
Scrat [10]

Answer:

  • 13

Step-by-step explanation:

<u>Put input value instead of the x into equation and calculate the output:</u>

  • y = -5x - 7

<u>x = -4, then find the value of y:</u>

  • y = -5(-4) - 7 = 20 - 7 = 13

The output is 13 when the input is -4

6 0
2 years ago
Read 2 more answers
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