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3 years ago

HELP HELP PLEASE ILL MARK BRAINLIEST

Mathematics

2 answers:

irina [24]3 years ago

6 0

Answer: C

Explanation: The variable is in the denominator

Maurinko [17]3 years ago

3 0

Answer:

third one

Step-by-step explanation:

cuz its a fraction, and fractions arent polynomials

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Describe the direction of the parabola and determine the y-intercept and zeros. f(x) = 3x^2 + 4x +16

miv72 [106K]

For y=ax²+bx+c
if a>0 then it opens up
if a<0 then it opens down

hmm, y intercept is where x=0
x intercept is where y=0

so

f(x)=3x²+4x+16
3>0 so opens up
y intercep
x=0
3(0)²+4(0)+16
16
y intercept is y=16

x intercept
0=f(x)=3x²+4x+16
there are no real solutions since the discriminant is negative
no x intercepts or no zeroes

so
opens up
y intercept of 16
no zeroes

8 0

3 years ago

2. The Youngs decided to book the room at the price that Mrs. Young was given, $1879, because it included breakfast for both of

leonid [27]

Answer:

yes

Step-by-step explanation:

5 0

3 years ago

PLEASE HELP ASAP!!!

Natalka [10]

Answer:

The company can manufacture 135 boxes of stuffed animals for $5000

Step-by-step explanation:

To find b, substitute $5000 for c(x), so

5000 = 20b + 2300

Then subtract 2300 from both sides of the equation, so

5000 (-2300) = 20b + 2300 (-2300)
2700 = 20b

Finally divide both sides of the equation by 20, so

2700/20 = 20b/20
135 = b

To check your answer substitute 135 in as b...

c(x) = 20(135) + 2300
c(x) = 5000

5 0

3 years ago

What is the solution to the system of equations below? Y=-1/4x+2 and 3y=-3/4x-6

fgiga [73]

Answer:

There are infinite solutions to the system of equations given

Solution:

The given equations given are,

$y=-\frac{x}{4}+2$ ------ (i)

$3 y=-\frac{3 x}{4}-6$ ---- (ii)

Now putting the value of (i) in (ii) we get,

$3 \times\left(-\frac{x}{4}+2\right)=-\frac{3 x}{4}-6$

$\Rightarrow-\frac{3 x}{4}+6=-\frac{3 x}{4}-6$

$\Rightarrow\frac{3 x}{4}-\frac{3 x}{4}=-12$

$\Rightarrow0 \times x=-12$

$\Rightarrowx=(\frac{-12}{0})=\infty$

So, there are infinite solutions to the system.

4 0

3 years ago

a 16 inch wire is to be cut. one piece is to be bent into the shape of a square, whereas the other piece is to be bent into the

Lyrx [107]

1. Let x be a length of square side, then the square perimeter is 4x (you need to cut 4x from 16 in. to make a square with side x in.). Then 16-4x is remained length of wire and you have to make form this piece a rectangle with sides one of which is twice bigger than another. If y is length of the smaller side, then 2y is length of the bigger side and rectangle perimeter is y+2y+y+2y=6y. You have 16-4x in. of wire left, so 6y=16-4x and $y= \frac{16-4x}{6}$ .

2.
$A_{square}=x^2 \\ A_{rectangle}=y\cdot 2y=\frac{16-4x}{6}\cdot2\cdot\frac{16-4x}{6}= \frac{(16-4x)^2}{18} \\ A(x)=A_{square}+A_{rectangle}=x^2+\frac{(16-4x)^2}{18}$ .

3. Find the derivative of the function A(x):
$A'(x)=2x+ \dfrac{2(16-4x)\cdot(-4)}{18} =2x- \dfrac{4(16-4x )}{9}$ .

4. Solve the equation A'(x)=0:
$2x- \dfrac{4(16-4x )}{9}=0 \\ 18x-64+16x=0 \\ 34x=64 \\ x= \frac{32}{17}$

5. Since $y= \frac{16-4x}{6}$ you have

$y= \dfrac{16-4 \frac{32}{17} }{6} = \dfrac{16\cdot17-4\cdot32}{6\cdot 17} = \dfrac{24}{17}$ .

Answer: the width of the rectangle is $\frac{24}{17}$

6 0

4 years ago