Answer:
T1he values for x and y of the equations is y = 11, and x = -19/5.
Step-by-step explanation:
To solve this question, we need to rearrange the expression:
5x+4y=25 - (5x+2y=3)
Look, if we subtract one equation to the other, then:
5x+4y=25 [1]
-(5x+2y=3) [2]
Which is the same as:
5x+4y=25
-5x-2y=-3
Subtract them:
5x+4y=25
-5x-2y=-3
---------------
2y =22
y = 22/2 = 11
Then, y = 11.
To find x, we can substitute<em> y</em> in either equation [1] or [2].
Let us use [1]
5x+4y=25
5x+4(11)=25
5x+44=25
5x=25-44
5x=-19
x = -19/5
Then, the values for x and y of the equations is y = 11, and x = -19/5.
The answers are..................... y= -2, and x= 7
Answer:
-94
Step-by-step explanation:
2( − 6) − 72 − (13 − 3)
PEMDAS
Parentheses first
2( − 6) − 72 − 10
Then multiply and divide from left to right
-12 -72-10
Then add and subtract from left to right
-94
Answer:
QPR and NMP (Last one)
Step-by-step explanation:
Visually you can see they are the same angle