30% of $15 is $4.50,hope this helps!
Answer:
28 km per hour
Step-by-step explanation:
Kilometres Brian needs to drive in an hour = total kilometres / total hours
168 km / 6 hours = 28 km per hour
Ok, using PEMDAS we need to distribute the parentheses first. To do that we do -3x times x plus -3x times 4. This gets us to 6x-3x^2-12x. To simplify even mroe we need to combine like terms, which is x. So, 6x-12x can be combined into -6x. Since -3x^2 has no like terms, we have then finished simplifying the equation, which is: -6x-3x^2
*disclaimer: i am sorry if i got this wrong lol. You may want to double check
Answer:
a. p = 6
b. q = 4
c. r = 8
d. s = 10; t = 8.3
Step-by-step explanation:
1. a. The side length of two similar triangles are proportional, therefore:

Cross multiply


Divide both sides by 15
p = 6
b. Based on the midsegment theorem,


c. The side length of two similar triangles are proportional, therefore:

Multiply both sides by 20


r = 8
d. The side length of two similar triangles are proportional, therefore:


Multiply both sides by 6


s = 10


Multiply both sides by 5


t = 8.3 (nearest tenth)
18m+6n
( factor out 6 from the expression )
6(3m+n)