Y=2x + 5, the Y-intercept is 5
Answer:
r = 4
Step-by-step explanation:
You need to use the slope formula to solve for r.
1. Write out the equation using slope formula
(-7 - 1)/(r + 4) = -1
2. Multiply both sides by r + 4
-8 = -r - 4
3. Add 4 on both sides. Optionally, use the reflexive property of equality.
-r = -4
4. Multiply both sides by -1
r = 4
Answer:
10 inches
Step-by-step explanation:
w = 1/5 P
Multiply each side by 5
5w = 1/5P *5
5w =P
We know the perimeter of a rectangle
P = 2(l+w)
We can set the two equations equal
5w = 2 (l+w)
l =15 inches
We can substitute 15 in for the length
5w = 2(15+w)
Distribute
5w = 30 +2w
Subtract 2w from each side
5w -2w = 30+2w-2w
3w =30
Divide each side by 3
3w/3 = 30/3
w =10
The width is 10 inches
Answer:
sales tax 6%
Step-by-step explanation:
pencils' price= $ 5.00
pencils' price + sales tax = $5.30
$5.00 + sales tax = $5.30
sales tax = $5.00- $5.30
sales tax= $0.30
sales tax = % in decimals times pencils' price
$0.30 = p x $5.00
p= $0.30/ $5.00
p= 0.06
in percent is 6%