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3 years ago

WILL GIVE BRAINLIEST!!! Multiplication

Mathematics

2 answers:

IgorC [24]3 years ago

5 0

Answer:

yo yo use math_way its very helpful fast and ez to use

Step-by-step explanation:

without the "_"

Roman55 [17]3 years ago

3 0

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Todd's cube has an edge that measures5 inches. Kara's cube has an edge of3 inches. If Kara's cube was stackedon top of Todd's cu

anyanavicka [17]

Answer:

152 in³

Step-by-step explanation:

Each cube's volume is the cube of its edge length, so the total volume is ...

(5 in)³ + (3 in)³ = 125 in³ +27 in³ = 152 in³

3 0

2 years ago

you have 12 cards. one out of every 4 cards is faceup. the rest are facedown. how many cards are faceup

umka2103 [35]

3 cards

1/4 = x/12 1/4 = 3/12
4 * 3 = 12
1 * 3 = 3
x = 3

7 0

2 years ago

PLS HELP I WILL GIVE BRAIN THINGY

NeTakaya

Answer:

4(3y+8)

Step-by-step explanation:

Download photomath

7 0

3 years ago

[10] In the following given system, determine a matrix A and vector b so that the system can be represented as a matrix equation

irina1246 [14]

Answer:

$y=-\frac{158}{579}$

Step-by-step explanation:

To find the matrix A, took all the numeric coefficient of the variables, the first column is for x, the second column for y, the third column for z and the last column for w:

$A=\left[\begin{array}{cccc}1&1&2&2\\-7&-3&5&-8\\4&1&1&1\\3&7&-1&1\end{array}\right]$

And the vector B is formed with the solution of each equation of the system: $b=\left[\begin{array}{c}3\\-3\\6\\1\end{array}\right]$

To apply the Cramer's rule, take the matrix A and replace the column assigned to the variable that you need to solve with the vector b, in this case, that would be the second column. This new matrix is going to be called $A_{2}$ .

$A_{2}=\left[\begin{array}{cccc}1&3&2&2\\-7&-3&5&-8\\4&6&1&1\\3&1&-1&1\end{array}\right]$

The value of y using Cramer's rule is:

$y=\frac{det(A_{2}) }{det(A)}$

Find the value of the determinant of each matrix, and divide:

$y==\frac{\left|\begin{array}{cccc}1&3&2&2\\-7&-3&5&-8\\4&6&1&1\\3&1&-1&1\end{array}\right|}{\left|\begin{array}{cccc}1&1&2&2\\-7&-3&5&-8\\4&1&1&1\\3&7&-1&1\end{array}\right|} =\frac{158}{-579}$

$y=-\frac{158}{579}$

7 0

3 years ago

Isosceles trapezoid ABCD has legs If AB = 6y – 3, BC = 4y – 5, and CD = 7y – 18, find the value of y

castortr0y [4]

Answer:

The value of y is y=15

Step-by-step explanation:

We have:

AB = 6y – 3, BC = 4y – 5, and CD = 7y – 18

We define the isosceles trapezoid as it has two opposites parallel, the two other opposites legs are equal and also the diagonals are equal.

Here AB = CD

6y-3 = 7y-18

Combine the like terms:

18-3 = 7y-6y

15 = y

It means the value of y is y=15....

4 0

3 years ago