-x=-y-9
O A. (10,1)
O B. (11,0)
O C. (9,2)
O D. (8, 3)
Answer:
A. ( 10, 1 )
Step-by-step explanation:
Isolate x for x + y = 11.
x + y = 11
Subtract y from both sides.
x + y - 11 - y
Simplify.
x = 11 - y
Substitute x = 11 - y
[ - ( 11 - y ) = -y - 9 ]
Isolate y for - ( 11 - y ) = -y - 9.
- ( 11 - y ) = -y - 9
Expand - ( 11 - y )
Add 11 to both sides.
-11 + y + 11 = - y - 9 + 11
Simplify.
y = -y + 2
Add y to both sides.
y + y = -y + 2 + y
Simplify.
2y = 2
Divide both sides by 2.
Simplify.
y = 1
Substitute y = 1.
x = 11 - 1
Subtract the numbers: 11 - 1
= 10
x = 10
y = 1
( 10, 1 )
Answer:
12 3/8, first you want to change the first fractions denominator equal to the second fractions denominator. Since 4 and 8 are multiples, it easily changes. So the new numbers would be 3 4/8 + 8 7/8 you first add the whole numbers, then the fractions to get 12 3/8.
Answer: 3 2/4 added to 8 7/8 = 12 1/2
Step-by-step explanation:
3+8=11
2/4=4/8
4/8+7/8=1 4/8
1 4/8+11= 12 1/2
Answer:
-4
Step-by-step explanation:
y-3=-4(x-5)
y=-4x+20+3
y=-4x+23
y=mx+b where m=slope and b=y-intercept
b. 1× =5.12
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2
c. m + 2 = 7.8
d. 1.2 d = 6