Answer:
The value of a=4
Step-by-step explanation:
Given the matrix
- A matrix is singular if its determinent is zero.
so solving the matrix B by taking its determinant to get the value a
as according to determinant formula
Therefore, the value of a=4
Answers: See each part below.
1) The scale factor on Map 1 is 1cm = 2 km. It is given in the key in the bottom right corner.
2) The length of the trail would be 16 km. Since each cm is 2 km, we multiply the 8 by 2 to get a total of 16.
3) The scale factor from the first map to the second map is 0.75. To find this we can write and solve the following equation to determine the change from Map 1 to Map 2.
8k = 6
k = 0.75
4) To find the lengths of the sides of the landmark, just change the mm into cm and use the scale factor for each.
5 mm is 0.5 cm. 0.5 x 2 = 1 km
3 mm is 0.3 cm. 0.3 x 2 = 0.6 km
4 mm is 0.4 cm. 0.4 x 2 = 0.8 km
Answer:
.00126 lb of icing
Step-by-step explanation:
Just divide 1.26 lb by 1000 since there were 1000 cakes and she used 1.26 total, and we want to find how much for just one cake.
There is a video on khanacademy, search "rationalize the denominator." Then instead of getting the answer you will learn how to do it and be able to do it on other problems in the future.
So the price is C
and 20 cakes is T
So 1 cake times 20=20 cakes
so 20C=T
