Answer:
2x2 matrix
Step-by-step explanation:
Given
Dimension of matrices A = 2x2 matrix
Dimension of matrices B = 2x1 matrix
The dimension of matrix AB can be gotten by cancelling the row of matrices 1 and column of matrices 2.
After cancelling both row and column, the remaining dimension will be 2x2 matrix. Hence the dimension of AB is 2x2 matrix
Answer:
225
Step-by-step explanation:
Mary = 3x (3 times Carey)
Carey = x
Barry = x/2 (Because Carey read twice as many as Barry, it means he read half the amount Carey did)
3x + x + x/2 = 405
4x + x/2 = 405
8x/2 + x/2 (treat these as fractions) = 405
9x/2 = 405
9x = 810 (cross multiply)
x = 90
Mary = 3(90) 270
Carey = 90
Barry = 90/2 45
Mary - Barry
270 - 45 = 225
Hope this helps! :)
D is the correct answer choice.
Subtract the 2 from both sides.
y>-3x -5
Due to the > symbol, a dashed line and shaded above is needed to complete the graph.
circumference =2πr=2× 7 22 ×28=22×8 =176 cm
Area =πr 2 = 7 22 ×28×28=88×28 =2464 cm 2
<u><em>circumference=176 cm </em></u>
<u><em>Area= 2464 cm 2</em></u>
Answer:
-4
Step-by-step explanation:
Let the number be x
If she multiplies the number by 2, it will become 2x
If divided by 4, it will be 2x/4, if she multiplies the result by itself, we will have:
2x/4(2x/4) = 4x/16
If she subtract the original number from 6 and divide by 10, we will have;
x-6/10
Equating both expressions
4x/16 = x-6/10
Cross multiply
4x(10)= 16(x-6)
40x =16x-96
40x-16x = -96
24x = -96
x = -96/24
x = -4
Hence the number is -4
