Z/3+10=-7/10
multiply both sides
10z + 300 = -21
move the constant to the right
10z= -21 - 300
Calculate
10z = -321
divide both sides ^^
answer : z=-321/10
Linear mathematical models describe real world applications with the use lines. For instance, a car going 50 mph, has traveled a distance represented by y=50x, where x is time in hours and y is miles. The equation and graph can be used to make predictions.
4/500=0.008
scientific notation form = 8 x 10^9
Answer:
4 terms
Step-by-step explanation:
4is the number of variable terms that are in the expression 3x3y + 5x2 _ 4y + z + 9. The four variable terms in the expression are "xy", "x^2", "y" and "z"
Step-by-step explanation:
First car.
0.2 gallons used for 7 miles.
Distance drive on 1 gallon of gas ![=\dfrac{7}{0.2}=35\ \text{miles}](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B7%7D%7B0.2%7D%3D35%5C%20%5Ctext%7Bmiles%7D)
Second car.
0.5 gallons used for 12 miles.
Distance drive on 1 gallon of gas ![=\dfrac{12}{0.5}=24\ \text{miles}](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B12%7D%7B0.5%7D%3D24%5C%20%5Ctext%7Bmiles%7D)
Third car.
0.9 gallons used for 25 miles.
Distance drive on 1 gallon of gas ![=\dfrac{25}{0.9}=27.8\ \text{miles}](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B25%7D%7B0.9%7D%3D27.8%5C%20%5Ctext%7Bmiles%7D)
So, the first car traveled fast while the second car traveled least. Hence, the sequence is first car > third car > second car.