3 years ago

Solve the system of equations.

Mathematics

1 answer:

Tems11 [23]3 years ago

6 0

Your answer is: D. (-4.25, -0.5)

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The height of a projectile in the air t seconds after it is shot can be modeled by the function y = -16t^2 + 3200t + 2, where t

Talja [164]

Answer:

160002 feet

Step-by-step explanation:

y(t)=-16t^2+3200t+2

We need y’ to find a maximum

y’(t)=-32t+3200

y’(t)=0 if t=100

Notes that y’(t)>0 if t<100, and fot t>100 y’(t)<0. Now we can conclude that y(t) has maximum in t=100

Y(100)=-16*10000+3200*100+2

Y(100)=160002 feet

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3 years ago

4x+y=10 what is the missing value

Mandarinka [93]

Answer:

Step-by-step explanation:

if x = 0 ,y =10

4×0+10

=10

if x = 1, y = 6

=4×1 + 6

=4 +6

=10

if x = 2, y = 2

=4×2 +2

=8 + 2

=10

u can substitute any value for x and y ...i have only used positive values here

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3 years ago

Draw triangle pqr and name it's vertices sides and angles

Galina-37 [17]

Answer:

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2 years ago

If we consider the simple random sampling process as an experiment, the sample mean is a. a random variable. b. always zero. c.

marta [7]

The sample mean is an estimate of the population mean.

The sample mean is exactly equal to the population mean

<h3>How to determine the true statement</h3>

When the population mean is known; the value of the population mean can be used as the sample mean.

This is so because:

The sample mean is an estimate of the population mean.

And it is represented as:

$\bar x = \mu$

Hence, the true statement is that the sample mean is exactly equal to the population mean