Answer:
The solution is B) (3, 1).
Step-by-step explanation:
For the system of equations given, there are few different ways to solve. Since the second equation y = 2x - 5 is already solved for 'y', we can use substitution and place the expression '2x - 5' in for 'y' in the first equation and solve:
2x - 5 + 2 = x
We can also solve for 'y' in the first equation and then set the two equations equal to each other:
y + 2 - 2 = x -2 or y = x -2 so, 2x -5 = x - 2
Either way, when we solve for 'x', we get:
2x - 3 = x or -3 = -x, so x = 3
Plugging in the value of 'x' into the second equation:
y = 2(3) - 5 or y = 6 - 5 or y = 1
The ordered pair (x, y) would be (3, 1).
Answer:
48 / x = 8
x = ?
Basic multiplication & division but x = 6
6 * 8 = 48
1. 8 * 1 = 8 + 0 = 8
2. 8 * 2 = 8 + 8 = 16
3. 8 * 3 = 8 + 8 + 8 + 24
4. 8 * 4 = 8 + 8 + 8 + 8 + 32
5. 8 * 5 = 8 + 8 + 8 + 8 + 8 = 40
6. 8 * 6 = 8 + 8 + 8 + 8 + 8 + 8 = 48
I'd recommend practicing with some mulitplication flashcards. One of the best things I ever did! :)
Step-by-step explanation:
Answer:
soft sounds are better because the energy in the waves hitting your eardrum and if there is too much energy it could damage your ear.
Step-by-step explanation:
Answer:
Step-by-step explanation:
We would apply the formula for exponential decay which is expressed as
A = P(1 - r/n)^ nt
Where
A represents the value after t years.
n represents the period for which the decrease in value is calculated
t represents the number of years.
P represents the value population.
r represents rate of decrease.
From the information given,
P = 23000
r = 8% = 8/100 = 0.08
n = 1
Therefore, the exponential decay function described in this situation is
A = 23000(1 - 0.08/n)1)^ 1 × t
A = 23000(0.92)^t
If A = 15000, then
15000 = 23000(0.92)^t
0.92^t = 15000/23000 = 0.6522
Taking log of both sides to base 10
Log 0.92^t = log 0.6522
tlog 0.92 = log 0.6522
- 0.036t = - 0.1856
t = - 0.1856/- 0.036
t = 5 years to the nearest year
Answer:
4 lb
Step-by-step explanation:
10+14+40=64 oz = 4lb