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IRISSAK [1]
3 years ago
14

PLEASE HELP ME ASAP I'LL GIVE BRAINLEST DON'T ANSWER IF YOU DON'T KNOW

Mathematics
2 answers:
telo118 [61]3 years ago
4 0

Answer:

Exactly one

Step-by-step explanation:

otez555 [7]3 years ago
4 0
Exactly 1




Step by step explanation
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PLZ HELP WILL GIVE 50 POINTS - QUADRATIC APPLICATIONS
Contact [7]

Answer:

The bird will be at a ground distance of 10.04 units away.

Step-by-step explanation:

Vertex of a quadratic function:

Suppose we have a quadratic function in the following format:

f(x) = ax^{2} + bx + c

It's vertex is the point (x_{v}, y_{v})

In which

x_{v} = -\frac{b}{2a}

y_{v} = -\frac{\Delta}{4a}

Where

\Delta = b^2-4ac

If a<0, the vertex is a maximum point, that is, the maximum value happens at x_{v}, and it's value is y_{v}.

Equation for the height:

The height of the bird after x seconds is given by:

h(x) = -0.114x^2 + 2.29x + 3.5

Which is a quadratic equation with a = -0.114, b = 2.29, c = 3.5.

When the bird is at its highest?

Quadratic equation with a < 0, and thus, at the vertex. The ground distance is the x-value of the vertex. Thus

x_{v} = -\frac{b}{2a} = -\frac{2.29}{2(-0.114)} = 10.04

The bird will be at a ground distance of 10.04 units away.

6 0
3 years ago
Round 25,000 to the nearest ten thousand
Ede4ka [16]

Answer: 30,000

Step-by-step explanation:

Round 5 up to 10 25000 to 30000

6 0
3 years ago
Read 2 more answers
Evaluate the function when x=5<br> F(5)=?
kenny6666 [7]

Step-by-step explanation:

When evaluating piecewise function, make sure the x value satisfies the function we use.

since 5>3, we use the second equations

That function is a constant function, this means at any x>3, exclusive, we will have a y value of -1.

So

f(5) =  - 1

7 0
2 years ago
Multiply (x-5)(x^2+4x-2)
barxatty [35]

Answer:

x^ 3 − x^ 2 − 22 x + 10

6 0
3 years ago
Read 2 more answers
A man commutes to work a distance of 4040 miles and returns on the same route at the end of the day. His average rate on the ret
Vladimir [108]

Answer:

T(x) =  \frac{80x+1000}{x^2+25x}

T(30) = \frac{3400}{1650} = 2.061

Step-by-step explanation:

If the rate is x, then the rate of the return is x+25. In both trips, he has 40 miles to travel, therefore, it will take 40/x hours in the first trip and 40/x+25 for the return. As a consecuence

T(x) = \frac{40}{x} + \frac{40}{x+25} = \frac{40 ( x+(x+25))}{x(x+25)} = \frac{80x+1000}{x^2+25x}

Also,

T(30) =  \frac{80*30+1000}{30^2+25*30} = \frac{3400}{1650} = 2.061

This means that if he starts at 30 miles per hour, it will take a bit more than 1 hour to be there: 1 hour and 20 minutes in the first trip, and a bit more than 40 minutes (40/55 hours) in the return.

8 0
3 years ago
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