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expeople1 [14]
2 years ago
12

Ms. Lance is planning a birthday party. She decided that she

Mathematics
2 answers:
Mariana [72]2 years ago
8 0

Answer:

15n + 45 ≤ 120

n ≤ 5

She can buy up to 5 balloons.

Step-by-step explanation:

Fixed amount: $45

Amount per balloon: $15

Let n = number of balloons

Total expense: maximum of $120, which means less than or wequal to $120

15n + 45 ≤ 120

15n ≤ 75

n ≤ 5

She can buy up to 5 balloons.

chubhunter [2.5K]2 years ago
7 0

Answer:

The answer is 3

Step-by-step explanation:

You have to subtract 120-45 and that gets you to 75 Then divide 75 by 15 and that gives you 3. So the answer is 3

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Divide -3x^3-2x^2-x-2 by x-2
tatuchka [14]
In this case, you must synthetic division. You are given x-2. You need to set that to zero so that you now have x-2=0. You then need to get x by itself. So:
x-2(+2)=0(+2) \\ x=2.
You then need to use that final part as the beginning of your synthetic division.
To continue, you must find the leading coefficients of every degree (remember: your degree is found by your largest exponent) beginning with your highest degree, in this case it is 3, and use the front number of the term. BE SURE TO BE AWARE OF NEGATIVES (indicated by subtraction signs)!!! Then you continue down the equation from x^{3} down tox^{2} then x^{1} then x^{0} (which is just the number without an "x") doing the same thing. So your setup should look similar to as follows:

2 l -3  -2  -1  -2
   l__________

The numbers inside the box should be added down (the first number is added to nothing, so it is added to zero. Then it is multiplied by the outside number (2). Then that multiplied number continues into the next slot within the box which is then added to the number above it, and so the process repeats. So the process should go like this.

2  l -3  -2  -1  -2
    <u>l  </u><u>0              
</u>      -3
2  l -3  -2  -1  -2
<u />    <u>l </u><u> 0  -6         </u>
      -3  -8
2  l -3  -2  -1  -2
    <u>l  </u><u>0  -6 -16    
</u>      -3  -8 -17
2  l -3  -2  -1  -2
    <u>l  </u><u>0  -6 -16 -34
</u>      -3  -8 -17 -36
So now you are left with -3, -8, -17, and -36. This is to be expected. Now, those new numbers are your new leading coefficients. Remember your first degree? It was 3, now, you need to take your leading degree and subtract it by one. That is your new degree. So now, going left to right on the synthetic division chart, you add "x" and your degree descending as you go further to the right. So, your new equation is -3 x^{2} -8 x-17.
There is a problem though, because there is still that -36. This is where that original piece that you divided the equation by comes in handy. You divided everything by x-2, so, you must add your remainder divided by x-2 to the rest of the equation.
So, the final equation is equal to:
-3 x^{2} -8x-17- \frac{36}{x-2}

That is your final answer.
4 0
4 years ago
When this car moves forward by 180 cm, each wheel does one full turn.
Andre45 [30]
D is the diameter of the wheel
the circle is π.d = 180
so d = 180/π = 57 cm
3 0
4 years ago
The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f (x )equalsStartFraction x
ankoles [38]

Answer:

The rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities are:

a) 0.52

b) 2.63

Step-by-step explanation:

The rate of change of a function at a given point P can be obtained by evaluating the 1st derivative of the function in P. Thus,

f(x)=\frac{x^2}{2(1-x)}

\frac{df(x)}{dx} = \frac{d(\frac{x^2}{2(1-x)})}{dx} \\\frac{df(x)}{dx}  =\frac{x}{1-x}  + \frac{x^2}{2(1-x)^2} \\\frac{df(x)}{dx} = -\frac{x(x-2)}{2(x-1)^2}

Now for we just need to evaluate in each of the given points

a) \frac{df(0.3)}{dx} =-\frac{0.3(0.3-2)}{2(0.3-1)^2}\\\boxed{\frac{df(0.3)}{dx} =0.520408 \approx 0.52}

b)\frac{df(0.6)}{dx} =-\frac{0.6(0.6-2)}{2(0.6-1)^2}\\\boxed{\frac{df(0.6)}{dx} = 2.625\approx 2.63}

4 0
3 years ago
Write an equation for the cubic polynomial functior
d1i1m1o1n [39]

So, the cubic polynomial function is x^3-10x^2+31x-30=0

No, none of the roots have multiplicity.

Step-by-step explanation:

We need to write an equation for the cubic polynomial function

whose graph has zeroes at 2, 3, and 5.

Zeros mean:

x=2, x=3 and x=5

or

x-2=0, x-3=0 and x-5=0

Multiplying all the factors:

(x-2)(x-3)(x-5)=0\\(x-2)(x(x-5)-3(x-5))=0\\(x-2)(x^2-5x-3x+15)=0\\(x-2)(x^2-8x+15)=0\\x(x^2-8x+15)-2(x^2-8x+15)=0\\x^3-8x^2+15x-2x^2+16x-30=0\\x^3-8x^2-2x^2+15x+16x-30=0\\x^3-10x^2+31x-30=0\\

So, the cubic polynomial function is x^3-10x^2+31x-30=0

No, none of the roots have multiplicity, A root has multiplicity if it appears more than 1 time. Like if (x-1)^2 is a root then 1 has multiplicity 2

Keywords: Polynomial Function

Learn more about Polynomial Function at:

  • brainly.com/question/1414350
  • brainly.com/question/1464739
  • brainly.com/question/2568692

#learnwithBrainly

6 0
3 years ago
What is the solution to the system of equations?
dlinn [17]

Answer:

(6-1) = 5 Because Obio 6 minus 1 equals 5

5 0
3 years ago
Read 2 more answers
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