Easy
y=2x-7
sub 2x-7 for every y you se inother equation
x+2(2x-7)=1
x+4x-14=1
5x-14=1
add 14 both sides
5x=15
divide 5
x=3
sub back
y=2x-7
y=2(3)-7
y=6-7
y=-1
(3,-1) is solution
Answer:$ 2.25 per km
Ste) = p-by-step explanation:
32 / (14 2/9
32 / (128/9) =
32 * 9 / 128 =
288 / 128 =
$ 2.25 per km
Answer:
x=3
Step-by-step explanation:
1. Simplify the expression
7x-\left(3\cdot\left(x-6\right)\right)=30
Solve by distributing:
7x-\left(3x+3\cdot-6\right)=30
Simplify the arithmetic:
7x-\left(3x-18\right)=30
Expand the parentheses:
7x-3x+18=30
Simplify the arithmetic:
4x+18=30
Let the length of equal sides be x cm. Perimeter = x cm + x cm + Base = 4 2/15 cm 2x + 4/3 = 62/15 On transposing 4/3 to R.H.S, we obtain 2x = 62/15 - 4/3 2x = 62 - 4 x 5/15 = 62 - 20/15 2x = 42/15 On dividing both sides by 2, we obtain 2x/2 = 42/15 x1/2 x = 7/5 = 1 2/5 Therefore, the length of equal sides is 1 2/5 c m.
Kyle can drive 15 miles with one gallon of gas
