9514 1404 393
Answer:
B. √900
Step-by-step explanation:
The solutions to the equation are ...
x = ±√900 = ±3√100 = ±10√9 = ±30
Of the offered choices, the only one that matches any of these is ...
√900
Answer:
about x=38.1
Step-by-step explanation:
9x38.1=342.9
Answer: C. Rectangles 1 and 3
Step-by-step explanation:
1. By definition, two rectangles are similar if they have equal shape bot do not have equal sizes.
2. You can know it the rectangle 1 and 3 are similar by the following proportions:
![\frac{l_1}{l_3}=\frac{w_1}{w_3}](https://tex.z-dn.net/?f=%5Cfrac%7Bl_1%7D%7Bl_3%7D%3D%5Cfrac%7Bw_1%7D%7Bw_3%7D)
Where
is the lenght of the rectangle 1,
is the lenght of the rectangle 2,
is the width of the rectangle 1 and
is the width of the rectangle 2.
3. Subtitute values:
![\frac{11m}{14m}=\frac{2.2m}{2.8m}](https://tex.z-dn.net/?f=%5Cfrac%7B11m%7D%7B14m%7D%3D%5Cfrac%7B2.2m%7D%7B2.8m%7D)
![0.78=0.78](https://tex.z-dn.net/?f=0.78%3D0.78)
4. Then, the rectangle 1 and 3 are similar.
Answer:
a= 1024
Step-by-step explanation: