Answer:
a = 2
b = -1
7(2y^2 + (-1)y - 3) =
14y^2 - 7y -21
Step-by-step explanation:
Answer:
= 3.1
= 2.6
= 4.5
= 3.3
Order from least to greatest: ![\sqrt{7}, \pi , \sqrt{11} ,2\sqrt{5}](https://tex.z-dn.net/?f=%5Csqrt%7B7%7D%2C%20%5Cpi%20%20%2C%20%5Csqrt%7B11%7D%20%2C2%5Csqrt%7B5%7D%20)
Answer:
B. 8.6
Step-by-step explanation:
Given:
Draw a right angled triangle ABC as as shown below.
From the triangle
,
Calculate the number of units from A to C and from C to B, we get
AC = 7 units and BC = 5 units.
Now using Pythagorean Theorem,
![AB^{2}=BC^{2}+AC^{2}\\AB^{2}=(7)^{2}+(5)^{2}\\AB^{2}=49+25\\AB^{2}=74](https://tex.z-dn.net/?f=AB%5E%7B2%7D%3DBC%5E%7B2%7D%2BAC%5E%7B2%7D%5C%5CAB%5E%7B2%7D%3D%287%29%5E%7B2%7D%2B%285%29%5E%7B2%7D%5C%5CAB%5E%7B2%7D%3D49%2B25%5C%5CAB%5E%7B2%7D%3D74)
Taking square root on both sides, we get
![\sqrt{AB^{2}}=\sqrt{74}\\AB=8.6](https://tex.z-dn.net/?f=%5Csqrt%7BAB%5E%7B2%7D%7D%3D%5Csqrt%7B74%7D%5C%5CAB%3D8.6)
Therefore, the distance between points A and B rounded to the nearest tenth is 8.6 units.
Answer:
42n+108
Step-by-step explanation:
21(2n+8)
42n+108