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Stels [109]
3 years ago
14

2.

Mathematics
1 answer:
Iteru [2.4K]3 years ago
5 0

answer:

x = 0.80

y = 1.50

step-by-step explanation:

x = cost of tacos

y = cost of burritos

both equations:

3x + 2y = 5.40

2x + 1y = 3.10

             ^

turn this | into this |

                             v

               y = 3.10 - 2x

then add it to the equation :

3x + 2 [ 3.10 - 2x ] = 5.40

3x + 6.2 - 4x = 5.40

-1x = - 0.8

x= 0.80

then add x = 0.80 to the equations to get :

3 [ 0.80 ] + 2y = 5.40

2.4 + 2y = 5.40

2y = 3

y = 1.5

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I believe your answer would be c

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2 3/4 + 12 6/8 = answer
svet-max [94.6K]

Answer:

15 1/2

Step-by-step explanation:

6 0
3 years ago
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PLEASE HELP(will mark brainiest) Draw a quadrilateral A'B'C'D' that is a translation (x + 2, y - 4) of quadrilateral ABCD.
yuradex [85]

Answer:

New coordinates:

A: (2,-4)

B: (6,-4)

C: (7,1)

D: (3,1)

Step-by-step explanation:

You translate each of the starting coordinates by adding or subtracting them by the coordinates given.  

x coordinates:  0+2=2              y coordinates:   0-4= -4

                         4+2=6                                         0-4= -4

                         5+2=7                                          5-4= 1

                         1+2=3                                           5-4= 1

7 0
3 years ago
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Pleaz Helpz!!! I needz this done before my final!!!
Marta_Voda [28]

the perimeter of the field is 442

width=w

the length of the field is 9 yards less than quadruple W

L=4x - 9

the perimeter is P=2L+2W

you can plug in the values

P= 2(4w-9) + 2W

plug in 442 for P

442= 2(4w- 9) + 2W

442= 8w - 36 + 2W

478 =8w + 2W

478= 10W

47.8 is your answer!!!

4 0
2 years ago
Explain how to solve 5x2-3x=25 by completing the square. What are the solutions
Vilka [71]

5x2-3x=25

Divide each term by 5:

x^2 - 3/5x = 5

Make a trinomial square of the left side by taking the square of half of the coefficient of x.

The coefficient of x is -3, so the square would be (-3/10)^2

Add that to both sides of the equation.

Now you have:

x^2 - 3/5x + (-3/10)^2 = 5 + (-3/10)^2

Simplify both sides:

x^2 -3/5x +9/100 = 509/100

Factor the trinomial:

(x-3/10)^2 = 509/100

Solve for x, , take the square root of both sides:

x-3/10 = +/-√509 / 100

Simplify the right side:

x-3/10 = +/-√509/10

Add 3/10 to both sides:

X = +/-√509/10 + 3/10 ( this is the exact form)

You can then find the decimal answer if needed.

4 0
3 years ago
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