<span>The total distance that the hiker walked does not have any relation with the starting time nor the ending time of walking. Also it doesn`t matter is the hiker going east, west, north or south. It is related only with the distances that he walked. Therefore: d = 6 km + 4 km + 6 km + 8 km = 24 km . Answer: B ) 24 km. Hope this helps. Let me know if you need additional help!</span>
Answer:
x = 61, y = 29
Step-by-step explanation:
29+x = 90
x = 61
x + y = 90
y + 61 = 90
y = 29
a)
X + Y = 5
<u>2X - Y = 9 </u>
X + 2X + Y - Y = 5 + 9
3X = 14
<h3>X = 14/3</h3>
Para Y, basta substituir o valor de X em qualquer uma das 2 equacoes - arbitrariamente. Escolhendo a primeira:
X+ Y = 5
14/3 + Y = 5
Y = 5 - 14/3
<h3>Y = 1/3</h3>
.........................
b)
3X - Y = 10
<u>X + Y = 18 </u>
3X + X - Y + Y = 10 + 18
4X = 28
<h3>X = 7</h3>
Para Y, basta substituir o valor de X em qualquer uma das 2 equacoes - arbitrariamente. Escolhendo a segunda:
X + Y = 18
7 + Y = 18
Y = 18 - 7
<h3>Y = 11</h3>
Divide total miles by number of days:
151.2 / 24 = 6.3 miles per day
Answer:
c. y=x^2+2x-7
Step-by-step explanation:
A linear function has the highest power of 1 (x)
A quadratic has the highest power of 2 (x^2)
A cubic has the highest power of 3 ( x^2)
a. y=x+9 linear
b. y=2x-15 linear
c. y=x^2+2x-7 quadratic
d. y=x^3-x^2 cubic