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
timurjin [86]
3 years ago
10

4x + 3y = 16

Mathematics
2 answers:
GalinKa [24]3 years ago
6 0

Answer:A

Step-by-step explanation:

ArbitrLikvidat [17]3 years ago
3 0

Answer:

A

Step-by-step explanation:

Given the 2 equations

4x + 3y = 16 → (1)

7x + 6y = 31 → (2)

Multiplying (1) by - 2 and adding to (2) eliminates the term in y

- 8x - 6y = - 32 → (3)

Add (2) and (3) term by term

- x = - 1 ( multiply both sides by - 1 )

x = 1

Substitute x = 1 into either (1) or (2)

Substituting in (1), then

(4 × 1) + 3y = 16

4 + 3y = 16 ( subtract 4 from both sides )

3y = 12 ( divide both sides by 3 )

y = 4

Solution is (1, 4 ) → A

You might be interested in
Help me!! grade due tonight :(
Grace [21]
It’s c. hope this helps!
8 0
3 years ago
At a school carnival, the diameter of the mat of a trampoline is 10 feet and the diameter of its metal frame is 12 feet. What is
GaryK [48]

pi is the ratio of circumference to the diameter of same circle. The length of the metal frame of trampoline considered is: Option D:  37. 7 feet.

<h3>How to find the length of the outer line of a circle?</h3>

Length of the outer line of a circle is called its circumference.

If the circle has got radius of r units length, then

Circumference of that circle = 2π r units = πd units where d is diameter of that circle.

This is why, we get the ratio of circumference to diameter as:

\dfrac{Circumference}{Diameter} = \pi

It is given that the trampoline in consideration has got diameter of 12 feet.

It is said that π = 3.14 to be considered (its not its exact value though).

Therefore, we get

\rm Circumference/12 = 3.14\\\\\text{Multiplying 12 on both sides}\\\\Circumference = 12 \times 3.14 = 37.68 \: \rm feet \approx 37.7 \: feet

Hence, the length of the metal frame of trampoline considered is obtained as: Option D:  37. 7 feet.

Learn more about circumference of circle here:

brainly.com/question/15211210

5 0
2 years ago
A lidless box is to be made with a volume of 256256 ft cubed 3. Find the dimensions of the box that requires the least amount of
sveta [45]

The optimum shape of such a box is half a cube. The corresponding cube will have a volume of 2×256 ft³ = 512 ft³ = (8 ft)³. Such a box has a square base that is 8 ft on a side. If the height is half that of the cube, it will be 4 ft.

The dimensions of your box will be 8 ft square by 4 ft high.

_____

If the base dimension is x ft, the area (quantity of material) is

... a = x² + 4x(256/x²)

... a = x² + 1024x⁻¹

Then the derivative of area with respect to x is

... a' = 2x -1024x⁻²

Setting this derivative to zero and solving for x gives the value of x for minimum area.

... 0 = 2x -1024/x²

... 512 = x³

... x = 8 . . . . . . . . same as above.

7 0
3 years ago
there are 5280 feet in a mile. what part of a mile, in decimal form, will you drive until you reach the exit? pls someone help
garri49 [273]

Answer:

12

Step-by-step explanation:

you have to add everything

7 0
3 years ago
Donna de paul is raising money for the homeless. She discovers that each church group requires 2 hours of let her writing and 1
Salsk061 [2.6K]

Answer:

x  =  7

y  =  3

z (max)  =  4950/3  =  1650

Step-by-step explanation:

Let call  

x numbers of church goup and

y numbers of Union Local

Then  

First contraint

2*x + 2*y ≤ 20

Second one

1*x + 3*y ≤ 16

Objective Function

z = 150*x + 200*y

Then the system is

z = 150*x + 200*y To maximize

Subject to:

2*x + 2*y ≤ 20

1*x + 3*y ≤ 16

x ≥ 0 y ≥ 0

We will solve by using the Simplex method

z - 150 *x - 200*y = 0

2*x + 2*y + s₁ = 20  

1*x + 3*y + 0s₁ + s₂ = 16

First Table

z           x          y          s₁           s₂          Cte

1        -150    -200       0            0     =      0

0          2         2           1            0     =    20

0          1          3          0            1      =     16

First iteration:

Column pivot   ( y column ) row pivot (third row) pivot 3

Second table

z           x                y          s₁           s₂                Cte

1       -250/3           0          0         200/3    =    3200/3

0      - 4/3               0          -1           2/3       =    -20/3

0         1/3               1            0           1/3       =    -20/3

Second iteration:

Column pivot  ( x column ) row pivot  (second row)  pivot  -4/3

Third table

z           x                y          s₁           s₂                Cte

1            0               0      750/12    700/6    =   4950/3

0            1                0        3/4          -1/2     =    7

0            0                1         -1/4          1/2     =  9/3

5 0
3 years ago
Other questions:
  • Find the diameter of a cone that has a volume of 83.74 cubic inches and a height of 5 inches. Use 3.14 for pi.
    5·1 answer
  • How do you solve this question
    13·1 answer
  • Please help me !!!!!!!!!!!!!!
    6·1 answer
  • Help me in this problem please !!
    6·1 answer
  • I forgot how to do this.. i just need an explanation:)
    10·1 answer
  • Please answer Question #6
    15·1 answer
  • A taxi ride cost $1.25 plus $0.75 per mile. If the total cost of the trip is $12.50, how many miles did the passenger travel?
    13·1 answer
  • Three of seven students ate apples for lunch. What is the ratio of students who ate apples to students who did not eat apples fo
    7·1 answer
  • Plzz i need fasssssst​
    5·1 answer
  • Show the remainder of this problem as a fraction: <br><br> =45 /
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!