3 years ago

Evaluate z^2−3 z+4 , when z=−4

Mathematics

2 answers:

taurus [48]3 years ago

7 0

It should be -19

I got the answer by plugging it into Desmos scientific calculator.

Maru [420]3 years ago

6 0

Answer:

Step-by-step explanation:

=z²-3z+4 when z is 4

=4²-3(4)+4

=16-12+4

You might be interested in

A hovercraft takes off from a platform.

lubasha [3.4K]

Answer:

81 meters.

Step-by-step explanation:

The height (in meters), h(x) of a hovercraft x seconds after takeoff, is modeled by:

$h(x)=-3(x-3)^2+108$

We are to determine its height at the time of takeoff.

Now, at the time of takeoff, x=0.

We substitute x=0 to solve for h.

$h(0)=-3(0-3)^2+108\\=-3(-3)^2+108\\=-3(9)+108\\=-27+108\\=81$ meters$

The height of the hovercraft at takeoff is 81 meters.

7 0

2 years ago

Read 2 more answers

The Jackson family drove 496 miles in 8 hours. Which is the unit rate in fraction form?

vagabundo [1.1K]

You find the unit rate by dividing 496 by 8
so
$\frac{496}{8} = \frac{62}{1}$

Hope I helped

3 0

3 years ago

Read 2 more answers

Is ABD = CDB?? Justify the answer I will mark the brainiest :))

mel-nik [20]

Yes ABD=CBD since they both are just half of the triangle

3 0

2 years ago

Read 2 more answers

Pls help <br><br> :)<br><br> Marking as brainlist

Nezavi [6.7K]

The area is 19.5 and the perimeter is 23.1

8 0

3 years ago

When steve woke up. his temerature was 102. two hours later it was 3 lower what is his temerature now?

valentina_108 [34]

Steve's original temperature - 102

2 hours later it dropped 3 degrees

102 - 3 = 99

Steve's current temperature is 99.

8 0

3 years ago