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Monica [59]
3 years ago
8

Is x^2 a quadratic expression?

Mathematics
2 answers:
givi [52]3 years ago
5 0
Yes it is a quadratic expression
kotykmax [81]3 years ago
4 0
I think it should be so yes
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5) Establish the indentity (cot + tan ) sin = sec . Show each step to justify your conclusion.
katen-ka-za [31]

Answer:

Step-by-step explanation:

Identities : -

cot = cos / sin

tan = sin / cos

( cot + tan ) sin = sec

LHS

= ( cot + tan ) sin

= ( ( cos / sin ) + ( sin / cos ) ) sin

= ( ( cos sin ) / sin ) + ( sin² / cos )

= cos + ( sin² / cos )

LCM = cos

= ( cos² / cos ) + ( sin² / cos )

= ( cos² + sin² ) / cos

Identity : -

cos² + sin² = 1

= 1 / cos

= sec

= RHS

Hence proved.

3 0
2 years ago
5. An airplane takes 4 hr to travel a distance of 4100 km. Another airplane travels at a speed
Mazyrski [523]

Answer:

4.969696 hours

Step-by-step explanation:

The distance traveled is shown through the following equations

Distance = velocity * time

This means that

4100=velocity*4

This means that ariplane 1 travles at 1025 km/hr

We can then subtract 200 from this to find that airplane two travels at a speed of 825 km/hr

Now we need to find how long it takes for that plane to travel 4100

So using the same equation

4100=825*time

Divison will tell us that the answer is around 4.9696 hours which is pretty much 5

7 0
3 years ago
Y=-4x graph equation
AleksandrR [38]

y = -4x

y = mx+b

b = 0

m = -4

here are some basic directions:

1. mark the point (0, 0) on the coordinate plane since b, aka the x intercept (where the line intersects with the x axis)

2. mark another point (1, -4) on the coordinate plane since we have defined a hawt slope ykyk

3. use the two points to guide ur ruler and draw a line idk how to describe it but yeah <3

4 0
2 years ago
The school has 1600 students but the club members are not sure how many tamales to make one day during lunch the club asked rand
nadezda [96]

300 tamales is what i got

let me know if its wrong

8 0
2 years ago
10PTS PLEASE HELP!!!!!!!
Nostrana [21]

The equation of a circle:

(x-h)^2+(y-k)^2=r^2

(h, k) - a coordinates of the center

r - a radius

A diameter d = 2r

We have

x^2+(y-2)^2=100\to r^2=100\to r=\sqrt{100}\to r=10

Answer: d = 2 · 10 = 20

6 0
3 years ago
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