You can multiply the equation in any order.
2[-3/9]=[-3/9]2
Commutative Property of Multiplication
Answer:
The value could replace q is 108 - n ⇒ the last answer
Step-by-step explanation:
* Lets study the values of quarters and nickles
- One quarter = 25 cents
- One nickle = 5 cents
- The number of coins is 108
- The coins are nickles or quarters only
- The coins worth $ 21
* Lets solve the problem
∵ The number of coins is 108 coins
- Let the quarter is q and the nickel is n
∴ q + n = 108 ⇒ (1)
∵ The coins worth $21
∵ $ 1 = 100 cents
∴ $21 = 21 × 100 = 2100 cents
∵ The quarter = 25 cents
∵ The nickels = 5 cents
∴ 25q + 5n = 2100 ⇒ (2)
- To find the value which replace q use equation (1)
∵ q + n = 108 ⇒ subtract n from both sides
∴ q = 108 - n
* The value could replace q is 108 - n
Answer:
Number of term n = 12
Step-by-step explanation:
Given:
a1 = -2
a2 = 3
Sum = 306
Find:
Number of term n
Computation:
d = a2 - a1
d = 3 - (-2)
d = 5
Sn = n/2[2a + (n-1)d]
306 = n/2[2(-2) + (n-1)5]
612 = n[-4 + 5n -5]
5n² - 9n - 612 = 0
Number of term n = 12
Answer:
degrees per minute
Step-by-step explanation:
Find the slope using any 2 points
I used the points (8, 2) and (12, 3)
m=
m=
Step-by-step explanation:
the line passing through the points (-7, - 7) and (4,-7).
Slope: (-7+7) /(4+7) = 0/11 = 0
this is a horizontal line
through the points (4,7) and (4, -6).
slope: (-6-7) /(4-4) = -13/0 = oo
this is a vertical line
