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Fiesta28 [93]
3 years ago
5

Answer the question in the photo. What would be the area and what would be the cost?

Mathematics
1 answer:
harkovskaia [24]3 years ago
6 0
It would b 5 !!!!!!!!!!!!!!!!!!!!
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Which of the following is a solution to the inequality graphed below? Select all that apply.
nydimaria [60]
(-2,-1)  and (1,-5) is the answer

4 0
3 years ago
Read 2 more answers
See question in attached photo.​
statuscvo [17]

9514 1404 393

Answer:

  (a, b) = (-2, -1)

Step-by-step explanation:

The transpose of the given matrix is ...

  A^T=\left[\begin{array}{ccc}1&2&a\\2&1&2\\2&-2&b\end{array}\right]

Then the [3,1] term of the product is ...

  (A\cdot A^T)_{31}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}1&2&2\end{array}\right]=a+2b+4

and the [3,2] term is ...

  (A\cdot A^T)_{32}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}2&1&-2\end{array}\right]=2a-2b+2

Both of these terms in the product matrix are 0. We can solve the system of equations by adding these two terms:

  (a +2b +4) +(2a -2b +2) = (0) +(0)

  3a +6 = 0

  a = -2

Substituting for 'a' in term [3,1] gives ...

  -2 +2b +4 = 0

  b = -1

The ordered pair (a, b) is (-2, -1).

8 0
3 years ago
ABCD is a parallelogram. Solve for BC.<br> B<br> X + 8<br> с<br> A<br> 2x +1 D<br> BC =
Arturiano [62]

Step-by-step explanation:

BC = AD (opposite sides in parallelogram is equal)

x + 8 = 2x + 1

8 - 1 = 2x - x

7 = x

x = 7

BC = x + 8 = 7 + 8 = 15

7 0
2 years ago
Kim's weekly pay is two thirds of Alicia's.Together they earn $600 per week
garik1379 [7]
A + k = 600
k = 2/3a

a + 2/3a = 600
3/3a + 2/3a = 600
5/3a = 600
a = 600 * 3/5
a = 1800/5
a = 360

k = 2/3a
k = 2/3(360)
k = 720/3
k = 240

so Kim's pay is $ 240 and Alicia's pay is $ 360
7 0
3 years ago
Chris says that the expression 4n - 2 can be written as 2(2n - 1). Do you agree? Explain your answer.
Ksju [112]

Answer:

Correct

Step-by-step explanation:

The given expression is : 4n - 2

Chris says that the expression (4n-2) can be written as 2(2n - 1).

Taking 2 common on the given expression.

(4n-2) = 2(2n-1)

Hence, he has wrote it in a correct way.

3 0
3 years ago
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