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Digiron [165]
3 years ago
14

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th

e given equation. Using this equation, find the time that the rocket will hit the ground, to the nearest 100th of second.
y=-16x^2+116x+75
Mathematics
2 answers:
fgiga [73]3 years ago
4 0
16 2 didoskskdififof
IrinaK [193]3 years ago
3 0

Answer:

7.85

Step-by-step explanation:

the other guy is incorrect,

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Margarite owns a boutique. She sells her jewelry at a 30% markup. If she buys a bracelet for $22, what would she sell it for aft
olga nikolaevna [1]

Answer:

selling price is $26.4

Step-by-step explanation:

Here, we want to apply the markup percentage so as to get the price of the jewelry

mathematically, we have the selling price as;

$22 + (30% of $22)

= $22 + 4.4

= $26.4

4 0
3 years ago
sunlight can penetrate a certain Lake to the depth of fifteen meters the lake is five and a half times deeper than the depth of
gizmo_the_mogwai [7]
Fifteen times Fifteen point Five equals 82.2 so the answer would be 82.2 Meters

4 0
3 years ago
Please help on this question
son4ous [18]
The perimeter would be 48 feet
6 0
3 years ago
The Demand function for a product is given by:
VikaD [51]

Answer:

The average rate of change of Demand between 40 and 175 units sold is of -0.1045.

Step-by-step explanation:

Average rate of change:

The average rate of a function f(x) in an interval [a,b] is given by:

A = \frac{f(b) - f(a)}{b - a}

In this question:

D(q) = -0.0003q^2 - 0.04q + 23.56

What is the average rate of change of Demand between 40 and 175 units sold?

a = 40, b = 175. So

D(40) = -0.0003*40^2 - 0.04*40 + 23.56 = 21.48

D(175) = -0.0003*175^2 - 0.04*175 + 23.56 = 7.3725

So

A = \frac{f(b) - f(a)}{b - a} = \frac{7.3725 - 21.48}{175 - 40} = -0.1045

The average rate of change of Demand between 40 and 175 units sold is of -0.1045.

3 0
3 years ago
10. Mr. Guerrero left his house and drove north at an average speed of 40 mph.Two hours later, his daughter Miranda left the hou
Charra [1.4K]
Speed=distance / time  ⇒ distance=time x speed
distance=d
time=t
speed= s

d=s*t

Distance  traveled by Mr Guerrero, when his daugther left the house
Data:
s=40 miles/ hour
t=2 hours
d=40 miles/ hour * 2 hours=  80 miles

Total distance traveled by Mr Guerrero:
d=80 miles + 40 miles/hourt    ⇒d=80+40t      (1)

d=total distance.
s=speed.
t=time spent by Miranda for she overtook her father.

Distance traveled by Miranda.
data:

s=48 miles/ hour
d=total distance.
t=time spent by Miranda for she overtook her father.

d=48 miles/hour * t      ⇒d=48t       (2)

With the equations (1) and (2), we make an system of equations:

d=80+40t
d=48t

We can solve this system of equation by equalization method.

80+40t=48t
80=48t-40t
80=8t
t=80/8=10

d=48t
d=48*10=480

Answer: the thistance will be 480 miles.
3 0
3 years ago
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