Let the number of days be x.
138 + 27x = 47 + 40x
40x - 27x = 138 - 47
13x = 91
x = 7
Ans: 7 days
Detailed working:
138 + 27x = 47 + 40x
138 + 27x - 27x = 47 + 40x - 27x
138 = 47 + 13x
138 - 47 = 47 + 13x - 47
91 = 13x
13x = 91
x = 91 ÷ 13
x = 7
Answer:
507 miles
Step-by-step explanation:
If each gallon can go 39 miles and the max number of gas it can hold is 13 gallons, then all you have to do is multiply 13 x 39, which equals 507
Answer:
D
Step-by-step explanation:
We want to find the distance between (-6, 4) and (-8, 6).
We can use the distance formula given by:
![d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B%28x_2-x_1%29%5E2%2B%28y_2-y_1%29%5E2)
Let (-6, 4) be (x₁, y₁) and let (-8, 6) be (x₂, y₂).
Substitute:
![d=\sqrt{(-8-(-6))^2+(6-4)^2](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B%28-8-%28-6%29%29%5E2%2B%286-4%29%5E2)
Evaluate:
![d=\sqrt{(-2)^2+(2)^2](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B%28-2%29%5E2%2B%282%29%5E2)
Evaluate:
![d=\sqrt{4+4}=\sqrt{8}](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B4%2B4%7D%3D%5Csqrt%7B8%7D)
Hence, our answer is D.
12 square units ie count up the vertical height of the triangle which is 6 units and then count up the horizontal length of it which is 4 so 6 x 4=24 for the rectangle formed by L x M but the triangle is only 1/2 of this area = 24/2= 12.