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3 years ago

Please show your work please

Mathematics

1 answer:

Nadusha1986 [10]3 years ago

5 0

The correct answer is 4.

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What areC12, C31, and C22 of matrix C?

Liono4ka [1.6K]

Compute the sum to simplify C :

$C = \begin{bmatrix}16-0.5 & 9+0 \\ -3+5 & 0 + 8 \\ 4-3 & -10+14\end{bmatrix} = \begin{bmatrix}15.5 & 9 \\ 2 & 8 \\ 1 & 4\end{bmatrix}$

Now, $c_{ij}$ is the entry of the matrix in row i and column j, so

$C = \begin{bmatrix}15.5 & \boxed{9} \\ 2 & 8 \\ 1 & 4\end{bmatrix} \implies c_{12} = 9$

$C = \begin{bmatrix}15.5 & 9 \\ 2 & 8 \\ \boxed{1} & 4\end{bmatrix} \implies c_{31} = 1$

$C = \begin{bmatrix}15.5 & 9 \\ 2 & \boxed{8} \\ 1 & 4\end{bmatrix} \implies c_{22} = 8$

5 0

2 years ago

Susan's cell phone plan allows her to use 950 minutes per month with no additional charge she has 188 minutes left for this mont

arsen [322]

950 - 188 = 762
Susan used 762 minutes in this month already.

6 0

4 years ago

On June 1st, Elena Moore deposited $610 in a savings account at Metro Savings and Loan Association. At the end of November, her

sasho [114]

I'm not good with any math that is above per algebra sorry.

3 0

3 years ago

Read 2 more answers

Suppose that two small cities have the same longitude, which gives the east-west position of a point on Earth's surface. One has

wel

Answer:

Distance between A and B is 2672 km.

Step-by-step explanation:

Since one city B is having latitude of 23° and other town is having latitude of 47°.Radius of Earth has been given as 6380 km.

Therefore arc A from x-axis will be A = 2πr(∅/360) = 2×3.14×6380×(47/360)

= 5230.90 km

Now arc B from x-axis = 2πr(∅'/360) = 2×3.14×6380(23/360) = 2559.80 km

Therefore distance between them = 5230.9-2559.8 = 2671.9 ≅ 2672 km

Now we will rewrite the arc length formula in radians.

arc A = r×(∅×π/180)

arc A = 6380×(47×π/180) = 1665.9π

arc B = 6380×(23×π/180) = 815.22π

Now the distance between A and B = 850.68π

6 0

3 years ago

Question 8

Alenkasestr [34]

Answer:

The answer is A

Step-by-step explanation:

Using PEMDAS you answer parentheses first so

(8-5)2-(2+4) would then be

3*2-6 then you would multiply

6-6 and find the answer of

6 0

3 years ago