"a is 4 more than b" ⇒ a = b +4
"a is 1 lesss than b" ⇒ a = b - 1
The first pair of equations is the appropriate choice.
Answer:
Option A. -6.5
Step-by-step explanation:
we have
Solve for r
That means ---> isolate the variable r
Combine like terns left side of the equation
Divide by 0.5 both sides
Answer:
Choice 1. -3x + 2y = 5.
Step-by-step explanation:
The slope of the line = y2-y1/x2-x1
= (4 - 1) / (1 - (-1))
= 3/2.
To find the equation of the line we use the point-slope form of the equation of a line:
y - y1 = m(x - x1) where m = slope and (x1, y1) is a point on the line. So using m = 3/2 and the point (1, 4):
y - 4 = 3/2(x - 1)
y - 4 = 3/2 x - 3/2
Multiply through by 2:
2y - 8 = 3x - 3
-3x + 2y = -3 + 8
-3x + 2y = 5 (answer).
Answer:
10 units
Step-by-step explanation:
LMNO is a square.
All sides of square are equal
MN = LM
3x + 1 = x + 7
3x - x = 7 - 1
2x = 6
x = 6/2
x = 3
LM = x + 7 = 3 + 7 = 10
LM = 10 units
Answer:
1. 7
2. 1.25, 5/4, 1 1/4
3. -0.7
4. 20
5. 4.8
6. 30
7. 1.4
8. 28
9. -3.3 (the last 3 is infinite)
