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lys-0071 [83]
3 years ago
11

Find the x-intercepts of the parabola with vertex (-1,-108) and y-intercept (0,-105).

Mathematics
1 answer:
bagirrra123 [75]3 years ago
8 0
 Intercepts are (7,0) and (-5,0).

Hope i helped :)


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You have 480 grams of a radioactive kind of samarium. If its half-life is 90 years,
lisov135 [29]

Answer:

120 grams will be left after 180 years.

Step-by-step explanation:

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay and its given by

                                             N(t)=N_0(\frac{1}{2})^\frac{t}{t_{1/2}}

where,

N(t) = quantity of the substance remaining

N_0 = initial quantity of the substance

t = time elapsed

t_{1/2} = half life of the substance

From the information given we know that:

  • The initial quantity is 480 g,
  • The half-life is 90 years,
  • 180 years is the time elapsed.

And we want to find how much will be left. For this we use the above formula.

N(t)=480\left(\frac{1}{2}\right)^{\frac{180}{90}}\\\\N(t)=480\left(\frac{1}{2}\right)^2\\\\N(t)=480\cdot \frac{1}{2^2}=120

120 grams will be left after 180 years.

3 0
3 years ago
Is y=3x+4 a function?
Oxana [17]

Answer:

Yes, it is a function

Step-by-step explanation:

Every possible input x value is paired with a unique output y value.

Another approach is to graph the function then conduct the VLT (vertical line test) at which point you will realize that any vertical line will intersect the graph at one point only meaning it is a function.

Hope this helps.

5 0
1 year ago
I need to find the product help
Licemer1 [7]
I'm assuming you mean

2\times\frac{17}{10}

Write the 2 as a fraction 2/1 and multiply.

\frac{2}{1}\times\frac{17}{10}=\frac{34}{10}=\frac{17}{5}


7 0
3 years ago
Solve the system of 2x-5y+z=1 3 y+2z=5-24z=48
motikmotik
<span>A) 2x -5y +z = 1
B) 3 y + 2z = 5
C) -24 z = 48
Those 3 equations you typed were somewhat squished together.
Did I retype those correctly?
Let me know and I'll solve it.


</span>
8 0
3 years ago
What number is halfway between eight and nine
stellarik [79]

Answer:

8.5

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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