Select the description that is true of the equation 2x+4y=2

Aliun [14]

C = 2 pi r
C = 2 x 3.14 x 5
C = 31.4 yd

A = pi r^2
A = 3.14 x 5^2
A = 3.14 x 25
A = 78.5 yd^2

4 0

3 years ago

21 POINTS!! Thank you so much!! There’s also things on my page worth lots points points as well! So if you could help with those

Art [367]

Answer:

Second one

third one

fifth one

last one

Step-by-step explanation:

Based on the x intercepts we can write

a(x+1)(x-5)

where a is some constant

solve for a by plugging in some coordinates

let's plug in (1,-8)

-8=a(1+1)(1-5)

-8= -8a

a=1

therefore the quadratic is (x+1)(x-5)

expand this

x²-4x-5

To find out where something is decreasing/increasing it's easiest to take the first derivative

x²-4x-5= 2x-4

set this equal to 0

2x-4=0

2x=4

x=2

Which means that our two intervals are

(-∞,2)U(2,∞)

plug in any values in the intervals to see whether or not the function is increasing/decreation

Let's plug in 0 for (-∞,2)

2(0)-4

-4

It's negative so it's decreasing on this interval

DO the same thing with the other one

let's plug in x=3

2(3)-4

2

this is positive so it's increasing on this interval

Go back to the critical value of x=2 and plug this into the equation to find the max/min

(2+1)(x-5)= -9

This is a minimum because the cofeccient for the degree is positive

For the limit one notice that we have a positive, even degree which means the end behavior is positive, positive

what this means is as x approaches negative infinity it's infinity

and as x approaches infinity it's infinity

6 0

3 years ago

Can someone help me? Thank you so much

Lady_Fox [76]

1. Not enough information??
2. SAS
3. ASA
4. HL??
5. SSS
6. AAS

7 0

3 years ago

PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

adoni [48]

Answer:

the 3rd one pretty easy man

Step-by-step explanation:

6 0

3 years ago

We are standing on the top of a 1024 foot tall building and launch a small object upward. The object's vertical altitude, measur

Ne4ueva [31]

Answer:

The highest altitude of that object is 1,600 feet.

Step-by-step explanation:

Given that,

$h(t) = -16t^2+192 t+1024$

where h(t) is the height of the object after t seconds.

$h(t) = -16t^2+192 t+1024$

Differentiating with respect to t

h'(t)= -32t+192

Again differentiating with respect to t

h''(t)= -32

To find the maximum or minimum value, first we set h'(t)=0.Then we get a equation of t and solve it. Assume t=a is the solution of the equation .

Now check h''(t) at t=a, if h''(a)<0 then the function h(t) has a maximum value at t=a

If h''(a)>0 then the function h(t) has a minimum value at t=a.

Now,

-32t+192=0

⇒32t=192

$\Rightarrow t=\frac{192}{32}$

⇒t= 6

h''(6) = -32<0, So the object reaches at its highest altitude after 6 seconds.

Now plunging t=6 in the given function

h(6)= -16 (6)²+192×6 +1024

=1600 feet

The highest altitude of that object is 1,600 feet.

6 0

3 years ago

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