K + 1 = 3k - 1 |-3k
-2k + 1 = -1 |-1
-2k = -2 |:(-2)
k = 1
New price is 1.05 because if you multiply 1.50 by .30 then your answer is 45. subtract 45 from 1.50 you get 1.05
Answer:
127 square ft
Explanation:
The formula to find the area of a circle with a know circumference is: C^2/4 π.
40^2 is 1600 and 4 times pi is 12.56. Divide 1600 by the 12.56 and you will get your area of 127.39. The answer is 127 square ft after rounding to the nearest square foot.
Answer: in the 1% account we have $2600 and in the 6% account we have $2400.
Step-by-step explanation:
We have two amounts A and B such that:
Where A is the amount invested in the 1% earning interest account and B is the amount invested in the 6% earning interest account.
A + B = $5000,
If the interest is yearly, then we have that, after one year, the interest is:
A*(1%/100%) + B*(6%/100%) = $170
A*0.01 + B*0.06 = $170
So we have two equations:
A + B = $5000
A*0.01 + B*0.06 = $170
In the first equation we can isolate A and get:
A = $5000 - B
and replace it in the other equation:
($5000 - B)*0.01 + B*0.06 = $170
$50 + B*0.05 = $170
B*0.05 = $120
B = $120/0.05 = $2400
Then A = $5000 - $2400 = $2600.
The answer is x = 6 1/2♣♣♣ if your trying to solve <span>7(x - 2) = 3(x + 4</span>
