A=90 because it is a right angle
Answer:
L = w + 5
P = 2(L+w) = 42
L + w = 21
w+5 + w = 21
2w + 5 = 21
2w = 16
w = 8 ft
L = w+5 = 13 ft.
Rectangle is 13 ft by 8 ft
Area = 13(8) = 104 ft2
Check: P = 2(L+w) = 2(13+8) = 2(21) = 42 ft
Answer:
$8
Step-by-step explanation:
The formula for simple interest is i = p*r*t, where r is the interest rate as a decimal fraction.
Here, i = $80*0.10*1 = $8
Answer:
Pat is right
Step-by-step explanation:
first multiply/divide then add/subtract,
Beth: 20 - 15 = 45 => 5 ≠ 45
Pat: 20 - 15 = 5 => 5 = 5
Answer:
The (i,j) cofactor Cij of A is defined to be
Cij=(−1)ijdet(Mij),
where Mij is the (i,j) minor matrix obtained from A removing the i-th row and j-th column.
Then consider the n×n matrix C=(Cij), and define the n×n matrix Adj(A)=CT.
The matrix Adj(A) is called the adjoint matrix of A.
When A is invertible, then its inverse can be obtained by the formula
Step-by-step explanation: