All categories

3 years ago

Maths I’ll give the brainiest

Mathematics

1 answer:

Helga [31]3 years ago

4 0

Answer:

x= 4/5

y= 2/5

Step-by-step explanation:

3x-y=2

2x+y=5

solve them so that they are in y=mx+b form

3x-y-3x=2-3x

-y= -3x+2

y= 3x -2

2x+y -2x= 2-2x

y= -2x+2

now use the substitution method to get your points

3x -2= -2x+2

3x -2+2= -2x+2+2

3x= -2x+4

3x+2x= -2x+4+2x

5x=4

x= 4/5

now substitute x into any of the 2 equations

y= 3x -2

y= 3(4/5) -2

y= 2 2/5 -2

y= 2/5

Hope this helped!

You might be interested in

The 16 oz jar of Peanut Butter costs $4.82. What is the cost per oz?

mr_godi [17]

Answer:

$.30 per ounce

Step-by-step explanation:

Take the price and divide by the number of ounces to get the cost per ounce

4.82/16

$.30125 per ounce

Rounding to the nearest cent

$.30 per ounce

7 0

2 years ago

I need to know the answer

Shkiper50 [21]

Answer:

x = 17

Step-by-step explanation:

-1 is the same as minus-ing it by 1.

10 + x - 1 = 26.

10 + 16 - 1 = 25, so it must not be x = 16.

x = 17. lets try it.

10 + 17 - 1 = 26!!

5 0

2 years ago

Read 2 more answers

Can someone help me please.

zhannawk [14.2K]

Answer:

Lena's Method: 280
Jackson's Method: 280

Step-by-step explanation:

Lena's Method:

8 + 12 = 20
Plug 20 in: 14(20)
14(20) = 14 × 20 = 280

Jackson's Method:

14 × 8 = 112
14 × 12 = 168
Re-write the expression: 112 + 168
112 + 168 = 280

I hope this helps!

8 0

3 years ago

A. 0.643 B. 0.933 C. 0.600 D. 0.321

PolarNik [594]

Answer:

0.321 (Answer D)

Step-by-step explanation:

Note that the event "A and Y" happens 9 times. That's 9 times out of (6+9+8+5) outcomes, or 28 outcomes.

Hence, P(A and Y) = 9/28, or 0.321 (Answer D)

4 0

3 years ago

Natalie consumes only apples and tomatoes. Her utility function is U(x, y) = x 2y 8 , where x is the number of apples consumed a

Kamila [148]

Answer:

16 apples.

Step-by-step explanation:

$U(x, y) = x^2y^8$

$MU_x =\frac{\partial U}{\partial x} = 2xy^8\\MU_y = \frac{\partial U}{\partial x} = 8x^2y^7\\$

Price of apples, Px=$4

Price of tomatoes, Py=$3

Ratio of their Marginal Utilities

$\frac{MU_x}{MU_y} = \frac{Px}{Py}$

$\frac{y}{4x} = \frac{4}{3}$

$y=\frac{16x}{3}$

Since Natalie’s income is $320

320 = xPx+yPy

$320=4x + 3*\frac{16x}{3} \\320= 4x+16x = 20x\\x=\frac{320}{20} = 16\\Also\\y=\frac{16x}{3}=\frac{16X16}{3}=\$85.33$

Since x=16, Natalie will consume 16 apples.

6 0

3 years ago