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3 years ago

9

I WILL MARK BRAINLIEST!! PLEASE HELP ASAP!!!

2 answers:

Andrej [43]3 years ago

8 0

For answer 3 the correct answer is D because when you plug in 7 for t you get 2376
It is an exponential function
Swamp would be cheaper as when you find the cost in 4 hours is less for it

goblinko [34]3 years ago

3 0

Answer:

Answer 1 is C) Exponential Function

For answer 2

65x4=260 +50 = 310 The answer is Swamp Lover, because it is cheaper

75x4=300 + 45= 345

For answer 3

$1200x1.05^{7} =1689 (rounded)$

Therefore the correct answer is C 1200, 5% anually, and 1689

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Write any equation in slope intercept form of the line that passes through the given point and it's parallel to the graph of the

Orlov [11]

Paralalell means that is has the same slope
y=mx+b
m=slope
y=-1x-2
slope=-1

the equation of a line that passes through the point (x1,y1) and has a slope of m is y-y1=m(x-x1)
given
(2,-2) and slope is -1
y-(-2)=-1(x-2)
y+2=-x+2
minus 2
y=-x
answer is y=-x

4 0

3 years ago

Do you agree with the statement that " cubic functions must have at least 1 x-intercept but not more than 3, whereas quadratic f

vladimir2022 [97]

Answer:

Yes, I agree

Step-by-step explanation:

For the cubic function

A cubic function is represented as:

$f(x)=ax^3+bx^2+cx+d$

A cubic function may have 1, 2 or 3 x intercepts. This is shown below

For 3 x intercepts

$y = x^3 - x$

Equate y to 0

$x^3 - x = 0$

Expand

$x(x^2 - 1) = 0$

Express $x^2 - 1$ as difference of two squares

$x(x - 1)(x +1 ) = 0$

<em>x = 0 or 1 or -1</em>

For 2 x intercepts

$y = x^3 - x$

$y =(x-5)^2)(x+7)$

Equate y to 0

$(x-5)^2(x+7) = 0$

Expand

$(x-5)(x-5)(x+7) = 0$

<em>x= 5 or x = -7</em>

For 1 x intercept

$y = x^3$

Equate y to 0

$x^3 = 0$

Take cube roots of both sides

$x = 0$

It has been shown above that a cubic function may have 1, 2 or 3.

So, I agree to the statement

For the quadratic function

A quadratic function will not have any x intercept when the function can not be factorized;

E.g.

$y = x^2 + x + 17$

<em>The above function has no x intercept.</em>

A quadratic function will have at least 1 x intercept when the function can be factorized;

E.g.

$y = x^2- 6x + 9$

Equate y to 0

$x^2- 6x + 9 = 0$

Expand

$x^2 - 3x - 3x + 9 = 0$

$(x - 3)(x-3) = 0$

$x = 3$

We've shown that a quadratic may have no x intercept, and it may also have x intercept(s)

Hence, I agree to both statement

3 0

2 years ago

On what interval is the function f(x) = -1272 +452 - 54 decreasing?

vova2212 [387]

Answer:

mume le land mujhe chod na mat sekha

Step-by-step explanation:

laude ke bal

3 0

2 years ago

PLEASE HELP <br> What is the volume, in cubic m, of a cube with an edge length of 14m?

Lera25 [3.4K]

Answer:

v = 2744 m³

Step-by-step explanation:

Volume of cube

= length³

= l³

= 14³

= 2744 m³

make as the brainliest

5 0

3 years ago

Wat does 6units equal as a mixed number you will get brainly!

cestrela7 [59]

6 units as a mixed number will get you to 16

3 0

3 years ago

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