2 years ago

2x+y=5 , 3x+2y=8 solve using cross multiplication

Mathematics

1 answer:

Xelga [282]2 years ago

5 0

Answer:

x=2

y=1

Step-by-step explanation:

2x+y=5

3x+2y= 8

<=> 6x+3y=15

6x+4y=16

<=> -y=-1

2x+y=5

<=> y=1

2x+1=5

<=> y=1

2x=4

<=> y=1

x=2

You might be interested in

Wendy is arranging books on the bookshelves in the school library. The total number of books she arranges is given by the equati

Harman [31]

The answer is 192 book. the reason why is because if you have 12 books each in 16 rows, you would like to MULTIPLY to find out how much in total. so
1
12
×16
---
72
+120
-------
192 books

8 0

3 years ago

Zero is not an element of the set of whole numbers A). True B). False

ollegr [7]

Answer:

False, it's a whole number.

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

F(x)=(5x+1)(4x−8)(x+6)f, left parenthesis, x, right parenthesis, equals, left parenthesis, 5, x, plus, 1, right parenthesis, lef

andrey2020 [161]

Answer:

$x=-\frac{1}{5} \:or \: x=2 \:or\: x=-6$

Step-by-step explanation:

Given $f(x)=(5x+1)(4x-8)(x+6)$

The zeros of the polynomial function are the point where the function f(x) equals zero.

$f(x)=(5x+1)(4x-8)(x+6)=0$

If abc=0, then a=0 or b=0 or c=0

Therefore:

$(5x+1)(4x-8)(x+6)=0 \:means\\5x+1=0 \:or \: 4x-8=0 \:or\: x+6=0\\5x=-1 \:or \: 4x=8 \:or\: x=-6\\x=-\frac{1}{5} \:or \: x=2 \:or\: x=-6$

6 0

3 years ago

Need help with this one

Tatiana [17]

Its D

i hope this helps

6 0

3 years ago

Which expression is equivalent to x + y + x + y + 3(y + 5)? 2x + 5y + 5 2x + y + 30 2x + 5y + 15 2x + 3y + 10 NextReset

jolli1 [7]

Which expression is equivalent to x + y + x + y + 3(y + 5)? 2x + 5y + 5 2x + y + 30 2x + 5y + 15 2x + 3y + 10

 $x + y + x + y + 3(y + 5)= \\ \\ x+y+x+y+3y+15= \boxed{ 2x+5y+15 }$

7 0

3 years ago

Read 2 more answers

2x+y=5 , 3x+2y=8 solve using cross multiplication​

2x+y=5 , 3x+2y=8 solve using cross multiplication