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
8090 [49]
3 years ago
7

Explain your answer !! Have a nice day Will give braisnlt

Mathematics
1 answer:
11111nata11111 [884]3 years ago
3 0

Answer:

The price of hot dog is $2.5 and that of a pretzel is $1.25.

Step-by-step explanation:

Let the cost of hotdogs be x and that of pretzels be x.

So,

4x+3y = 13.75 ...(1)

and

2x+5y = 11.25 ...(2)

Multiply equation (2) by 2.

4x+10y = 22.5 ...(3)

Subtract equation (1) from (3).

4x+10y-(4x+3y) = 22.5-13.75

4x+10y-4x-3y = 8.75

7y = 8.75

y = 1.25

Put the value of y in equation (1).

4x+3(1.25) = 13.75

4x+3.75 = 13.75

4x = 13.75-3.75

4x = 10

x = 2.5

So, the price of hot dog is $2.5 and that of a pretzel is $1.25.

You might be interested in
2) Use spherical coordinates to find the integral of f(x,y,z) = z over x^2 + y^2 + z^2 < 4 and x,y,z < 0
777dan777 [17]
1. Denote by \mathcal D the region bounded by the cylinder x^2+y^2=9 and the planes z=0 and z=6. Converting to cylindrical coordinates involves setting


\begin{cases}x=r\cos u\\y=r\sin u\\z=v\end{cases}


and \mathcal D is obtained by varying the parameters over 0\le r\le3, 0\le u\le2\pi, and 0\le v\le6. The volume element is


\mathrm dV=\mathrm dx\,\mathrm dy\,\mathrm dz=r\,\mathrm dr\,\mathrm du\,\mathrm dv

so the integral becomes

\displaystyle\iiint_{\mathcal D}xz\,\mathrm dV=\int_{v=0}^{v=6}\int_{u=0}^{u=2\pi}\int_{r=0}^{r=3}r^2v\cos u\,\mathrm dr\,\mathrm du\,\mathrm dv=0

2. Now let \mathcal D denote the region bounded by the sphere x^2+y^2+z^2=4 and the coordinate planes in the octant in which each coordinate of the point (x,y,z) is negative.

Converting to spherical coordinates, we set

\begin{cases}x=\rho\cos u\sin v\\y=\rho\sin u\sin v\\z=\rho\cos v\end{cases}

where we obtain \mathcal D by varying over 0\le\rho\le2, \pi\le u\le\dfrac{3\pi}2, and \dfrac\pi2\le v\le\pi. The volume element is now

\mathrm dV=\rho^2\sin v\,\mathrm d\rho\,\mathrm du\,\mathrm dv

so the integral becomes

\displaystyle\iiint_{\mathcal D}z\,\mathrm dV=\int_{v=\pi/2}^{v=\pi}\int_{u=\pi}^{u=3\pi/2}\int_{\rho=0}^{\rho=2}\rho^3\cos v\sin v\,\mathrm d\rho\,\mathrm du\,\mathrm dv=-\pi
8 0
3 years ago
Find the volume of the object.<br> 1. the cylindrical part of the measuring cup<br> 6.3 cm<br> 7 cm
Goryan [66]
Uhhhhhhghgdhsjsjs sbhssisiisnsbss suisis
5 0
2 years ago
Which statement would be true if you evaluate the expression 15x(465x4)
Morgarella [4.7K]

Answer:

c. the solution is 3 times as large as 5x(465x4)

Step-by-step explanation:

I assume you are using the letter x as the multiplication sign.

Start with:

15 x (465 x 4)

We know that 15 = 3 x 5

Now we replace 15 with 3 x 5 in the original expression.

15 x (465 x 4) = 3 x 5 x (465 x 4)

Answer: c. the solution is 3 times as large as 5x(465x4)

4 0
3 years ago
Two angles supplementary to the same angle must be congruent.
Ann [662]
Yes, that is factual I believe.
7 0
3 years ago
Solve for x. −4≤11−3x Enter your answer as an inequality in the box.
Mamont248 [21]

Answer:

x\leq 5

Step-by-step explanation:

  • the given expression is : −4≤11−3x
  • we use following operations to solve the inequality:
  • by adding 4 on both sides, the inequality will become :

-4+4 ≤ 11-3x +4

0 ≤ 15 -3x

  • adding 3x on both sides, the inequality will become:

3x ≤ 15

  • dividing both the sides of the inequality by 3, the inequality will become:

3x/3 ≤ 15/3

x ≤ 5                  ( since, 15/3 = 5)

  • therefore the solution for x as an inequality will be x ≤ 5
6 0
3 years ago
Other questions:
  • Which number is irrational?
    12·2 answers
  • Three times a number plus five is less than three fourths of the number
    14·2 answers
  • Find the length of the side of an equilateral triangle whose area is 9√3 cm2
    5·1 answer
  • Log (base 8) 2 +log (base 8) 4x^2 =1
    12·1 answer
  • I need it quick!!!!!What is 9 plus 3 5/6
    8·1 answer
  • Please help!! I’m confused :(
    7·2 answers
  • The volume of a cone is 16 cubic inches. Its height is 12 inches. What is the radius of the cone?
    6·1 answer
  • A 25-foot magazine rack begins 20 feet south of the checkout desk and continues south. What are the coordinates of the beginning
    8·2 answers
  • Members of a park-walking club were asked how often do they visit a gym or other exercise facility outside their home. The follo
    10·1 answer
  • What is the area of this figure?<br><br> Enter your answer in the box.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!