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netineya [11]
2 years ago
14

Question is in the picture. please help this is for finals.​

Mathematics
1 answer:
Darya [45]2 years ago
6 0
I think it might be 16
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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.

Thus, we have;

0=-4.9t^2+6t+50

Switch sides, we get;

-4.9t^2+6t+50=0

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)}

Simplifying, we get;

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

t=\frac{-6 \pm \sqrt{1016}}{-9.8}

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}

t=-2.4    and   t=3.9

Since, the value of t cannot be negative, then t=3.9

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

Hence, Option B is the correct answer.

5 0
3 years ago
DUE TODAYYYYYYYYYYYY HELP
Kisachek [45]

Answer:ed

Step-by-step explanation:

g

8 0
2 years ago
Read 2 more answers
Consider these functions f(x)=3x-7 g(x)=x+1/x-1 what is the of f(g(3)) answer
JulijaS [17]

Answer:

\boxed{-1}

.

Step-by-step explanation:

g(3) = \frac{3 + 1}{3 - 1}  = 2

f(g(3)) = 3(2) - 7 = -1

3 0
2 years ago
Find the perimeter of the shape<br> 5cm<br> 6cm<br> 17cm<br> 8cm<br> Perimeter = [perimeter] cm
exis [7]
To find perimeter you add up all the sides so 5cm+6cm+17cm+8cm. This will get you 36cm.
8 0
3 years ago
A forest covers 43,000 acres. A survey finds that 0.7​% of the forest is​ old-growth trees. How many acres of​ old-growth trees
Goryan [66]

Answer:

301 acres

Step-by-step explanation:

43,000 acres of forest

0.7% is old-growth

0.7% = 0.007

43,000 * 0.007 = 301 acres

7 0
2 years ago
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