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romanna [79]
3 years ago
12

Evaluate the expression for x=2 and y=4 when 16x^0+2x^2

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
8 0

21

Is the answer of course

Tema [17]3 years ago
7 0

Answer:

21

Step-by-step explanation:

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You buy $2.75$ pounds of pistachios and $2$ pounds of cashews. Do you pay more for the pistachios or for the cashews?
olya-2409 [2.1K]

Answer:

what's the rate? ........

7 0
3 years ago
A soccer ball is kicked toward the goal. The height of the ball is modeled by the function h(t) = −16t2 + 48t where t equals the
Stolb23 [73]

Answer:

  • t = 1.5; it takes 1.5 seconds to reach the maximum height and 3 seconds to fall back to the ground.

Explanation:

<u>1) Explanation of the model:</u>

  • Given: h(t) = -16t² + 48t

  • This is a quadratic function, so the height is modeled by a patabola.

  • This means that it has a vertex which is the minimum or maximu, height. Since the coefficient of the leading (quadratic) term is negative, the parabola opens downward and the vertex is the maximum height of the soccer ball.

<u>2) Axis of symmetry:</u>

  • The axis of symmetry of a parabola is the vertical line that passes through the vertex.

  • In the general form of the parabola, ax² + bx + c, the axis of symmetry is given by x = -b/(2a)

  • In our model a = - 16, and b = 48, so you get: t = - ( 48) / ( 2 × (-16) ) = 1.5

<u>Conclusion</u>: since t = 1.5 is the axys of symmetry, it means that at t = 1.5 the ball reachs its maximum height and that it will take the same additional time to fall back to the ground, whic is a tolal of  1. 5 s + 1.5 s = 3.0 s.

Answer: t = 1.5; it takes 1.5 seconds to reach the maximum height and 3 seconds to fall back to the ground.

8 0
3 years ago
In most places, it is only possible to see 2,000 stars in the nighttime sky due to light pollution. This is 4/15 as many stars a
emmainna [20.7K]

Let the no. of stars one can expect to see at Bryce Canyon be x.

Given that : No. of stars visible in the night sky = 2000

Also, given that, it is 4/15 of x.

Now, we have

\frac{4}{15}x = 2000\\\\x= \frac{2000 * 15}{4} = 7500

∴  You can expect to see 7,500 stars at Bryce Canyon.

5 0
3 years ago
price of ice hockey match was 14.50. the price has increased by 7%. how much is a ticket after the increase
rjkz [21]
7%=0.7 14.5×.07=1.01500. 1.01500 1.02. 14.50+1.02=$15.52.
3 0
3 years ago
Read 2 more answers
Josie has $47 left on her checking account. If she writes a check for $55,
kozerog [31]

Answer:

-8

Step-by-step explanation:

47-55=-8

3 0
2 years ago
Read 2 more answers
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