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viktelen [127]
3 years ago
15

There are 30 students in a math class.

Mathematics
2 answers:
jenyasd209 [6]3 years ago
6 0

Answer:

93%

Step-by-step explanation:

28 divided by 30= 0.93

0.93= 93%

Nataliya [291]3 years ago
4 0

Answer:

100%

Step-by-step explanation:

30 +28=58 this is the total of people in class

58/58× 100=100%

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A bird sees a worm on the ground 50 m. below. The bird dives for the worm at a speed of 6 m/sec. The function h\left( t \right)
iragen [17]

<u>Given</u>:

The height of the bird at time t is given by the function h(t)=-4.9t^2+6t+50

We need to determine the time it takes the worm to be eaten by the bird.

<u>Time taken:</u>

The time can be determined by substituting h(t) = 0 in the function.

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Let us solve the equation using the quadratic formula.

Thus, we get;

t=\frac{-6 \pm \sqrt{6^{2}-4(-4.9) 50}}{2(-4.9)}

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t=\frac{-6 \pm \sqrt{36+980}}{-9.8}

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t=\frac{-6 \pm 31.87}{-9.8}

The values of t are given by

t=\frac{-6 + 31.87}{-9.8}   and   t=\frac{-6 - 31.87}{-9.8}

t=\frac{25.87}{-9.8}    and   t=\frac{-37.87}{-9.8}

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Thus, the time taken by the bird to eat the worm is t=3.9 seconds.

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3 years ago
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9514 1404 393

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The inscribed angle (?) is half the measure of the arc it intercepts:

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  ? = 45°

7 0
3 years ago
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