1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kakasveta [241]
3 years ago
14

Suppose you bought supplies. Three rolls of streamers and 15 party hats cost $30. Later, you bought 2 rolls of streamers ad 4 pa

rty hats for $11. Solve a system of equations to determine the cost of streamers and party hats, find their costs.
Mathematics
1 answer:
Zolol [24]3 years ago
6 0
Since 30÷15 is 2 you now know each party hat is 2 dollars. Now we know that and we can easily find out how much a roll of streamer is. 11-(4x2)=3. 3÷2=1.5. One roll of streamer is $1.50 and one party hat is $2. I'm pretty sure I did this right lol I hope it helps
You might be interested in
Can someone help me here please!?
Maksim231197 [3]
The answer is A p = 1.6m
7 0
2 years ago
Read 2 more answers
X^2 + 32x + 256 = 1<br>please show steps​
Elena L [17]

\boxed{x_{1}=-15} \\ \\ \boxed{x_{2}=-17}

<h2>Explanation:</h2>

In this case, we have the following equation:

x^2+32x+256=1

But we can write this equation as:

x^2+32x+256=1 \\ \\ Subtract \ -1 \ from\ both \ sides: \\ \\ x^2+32x+256-1=1-1 \\ \\ x^2+32x+255=0

So this final result is a quadratic equation written in Standard Form (ax^2+bx+c=0). We need to find the solutions to this equations, so let's use quadratic formula:

x=\frac{-b \pm \sqrt{b^2-4ac}}{2a} \\ \\ a=1 \\ b=32 \\ c=255 \\ \\ \\ x=\frac{-32 \pm \sqrt{(32)^2-4(1)(255)}}{2(1)} \\ \\ x=\frac{-32 \pm \sqrt{1024-1020}}{2} \\ \\ x=\frac{-32 \pm \sqrt{4}}{2} \\ \\ x=\frac{-32 \pm 2}{2} \\ \\ Finally, \ two \ solutions: \\ \\ \boxed{x_{1}=-15} \\ \\ \boxed{x_{2}=-17}

<h2>Learn more:</h2>

Quadratic Equations: brainly.com/question/10278062

#LearnWithBrainly

3 0
3 years ago
Si una galleta de chocolate aporta un aproximado de 150 kcal y un viaje en bicicleta se quema por media hora se que mas 340 kcal
Elanso [62]

Answer:

Una persona necesitará 2 horas y 30 minutos de viaje en bicicleta para quemar el contenido kilocalórico de cinco galletas.

Step-by-step explanation:

De acuerdo con este problema, la cantidad de calorías que se quema es directamente proporcional al tiempo de viaje en bicicleta. Si sabemos que una galleta aporta 150 kilocalorías, entonces 5 galletas equivalen a 750 kilocalorías.

Por regla de tres simple calculamos el tiempo requerido para quemar 750 kilocalorías:

x = 30\,min \times \frac{750\,kcal}{150\,kcal}

x = 150\,min

Es decir, una persona necesitará 2 horas y 30 minutos de viaje en bicicleta para quemar el contenido kilocalórico de cinco galletas.

6 0
2 years ago
A coffee shop sells bags of coffee for a regular price of $5 per bag. Ravi bought some bags and used a coupon for $20 off his en
Sliva [168]

Answer: He bought 7 bags

Step-by-step explanation: So if he bought 7 bags then the cost will be $35. And he used a $20 off coupon for his entire purchase, so $15.

Hope this helps and a brainliest would be appreciated

8 0
2 years ago
A retail clothing store offers customers an opportunity to open up a credit card during checkout. One location of the retail clo
svetoff [14.1K]

A function assigns the value of each element of one set to the other specific element of another set. The total amount of credit cards opened at the two locations is given as 45+3t.

<h3>What is a Function?</h3>

A function assigns the value of each element of one set to the other specific element of another set.

Given that the number of credit cards, A, that is opened t months since January can be modeled by the function A(t) = 20 + 4t, while the number of credit cards opened at another location, B, is defined by the function B(t)=25−t.

Now, the total number of credit cards that are opened at both the location together will be,

Total number of credit cards = A(t) + B(t)

                                                = 20 + 4t + 25 - t

                                                = 20 + 25 + 4t - t

                                                = 45 + 3t

Hence, the total amount of credit cards opened at the two locations is given as 45+3t.

Learn more about Function here:

brainly.com/question/5245372

#SPJ1

3 0
2 years ago
Other questions:
  • Stacy rolls a pair of six-sided fair dice.
    9·1 answer
  • Lindsay has 9 blue envelopes. She has 7 fewer yellow envelopes than blue envelopes. She has 4 times as many green envelopes as y
    10·2 answers
  • What is the answer help
    9·1 answer
  • A pizza shop charged $49.57 for 3 large pepperoni pizza's. The price included a $2.50 delivery fee
    10·1 answer
  • The graph shows the rate at which the depth of the water in a pond is changing over time. On a coordinate plane, a graph titled
    9·2 answers
  • 4/5×10 please tell me the answer
    12·2 answers
  • Graph x + 3y &lt; 6 <br> Help
    14·1 answer
  • Find the value of this expression if x = 4 x^2 -8
    6·1 answer
  • If the edge length of a cube is 5 cm. , then the sum of all edges =<br><br><br><br>​
    15·1 answer
  • What is the solution to -3(4x - 8) = -36<br> A)3<br> B)-5<br> C)-3<br> D)5 help please
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!