Answer:
The value of r is 12.
Step-by-step explanation:
Since DM = 25, and DG + GM = DG, we can use this information to compose the equation:
r + 2 + 2r - 13 = 25
Combine like terms by adding r and 2r, and subtracting 2 and 13.
3r - 11 = 25
Add 11 to both sides.
3r = 36
Divide both sides by 3.
r = 12
Answer:$4449.6.
Step-by-step explanation:
You deposit $2700 into a bank account paying 64.8% simple interest per year. You left the money in for 1 year. Find the interest earned and the amount at the end of those 1 year?
Result:
The interest is $1749.6 and the amount is $4449.6.
Explanation:
STEP 1: Find an interest by using the formula , where I is interest, P is total principal, i is rate of interest per year, and t is total time in years.
In this examplee P = $2700, i = 64.8% and t = 1 years, so
STEP 2: Find an amount by using the formula .A =P+I
Since P = $2700 and I = $1749.6 we have
It would be so much easier with elimination but ok
1.
x+y=1
minus x
y=1-x
sub
2x-(x-1)=-2
2x-x+1=-2
x+1=-2
x=-3
sub
y=1-x
y=1-(-3)
y=1+3
y=4
(-3,4)
2.
x-2y=2
add 2y
x=2y+2
sub
5(2y+2)-3y=-11
10y+10-3y=-11
7y+10=-11
7y=-21
y=-3
sub
x=2y+2
x=2(-3)+2
x=-6+2
x=-4
(-3,-4)
3.
x-y=3
add y
x=y+3
sub
6(y+3)+4y=13
6y+18+4y=13
10y+18=13
10y=-5
y=-1/2
sub
x=y+3
x=-1/2+3
x=5/2
(5/2,-1/2)
1. (-3,4)
2. (-3,-4)
3.(5/2,-1/2)
The value of a number is for example 7, 70 (but also 8, 80, etc). 7 can refer to the value of seven if it's on its own or if it's on the rightmost position, but in the number 75, seven refers to the value of 70. The same digit can have different values in a place value system where the value represented by a digit depends on its position.
Hello there! :D
6 in' pieces can be cut! :D
