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lisov135 [29]
3 years ago
11

1. Hellppppppppppp!!!!!!

Mathematics
1 answer:
Savatey [412]3 years ago
3 0

Answer:

\left[\begin{array}{ccc}-5&6\\1&-4\end{array}\right]

Step-by-step explanation:

To find the product of two matrices we need to multiply the elements of each row of the first matrix by the elements of each column in the second matrix. Then we should add the products. Then:

\left[\begin{array}{ccc}-3&4\\2&-5\end{array}\right] × \left[\begin{array}{ccc}3&-2\\1&0\end{array}\right] = \left[\begin{array}{ccc}-9+4&6+0\\6-5&-4+0\end{array}\right] = \left[\begin{array}{ccc}-5&6\\1&-4\end{array}\right]

The solution is \left[\begin{array}{ccc}-5&6\\1&-4\end{array}\right]

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A toolbox contains 12 screwdrivers and 11 wrenches. Each screwdriver has a mass of 1,298 grams, and each wrench has a mass of 2,
kupik [55]

Answer:

Each screwdriver has a mass of 1,298 grams, and each wrench has a mass of 2,282 grams.

Step-by-step explanation:

8 0
3 years ago
The figure shows the dimensions of a wall having a door and window of a room. Write an algebraic expression for the area of the
qwelly [4]

Answer:

Area of the wall to be painted = (11x² + 12x) square units

Step-by-step explanation:

The figure that should be attached to this question is missing. The figure was obtained and is attached to this solution provided.

From the image attached, it is given that the dimension of the rectangular wall to be painted is (4x+3) by (4x), the dimensions of the window is (2x) by (x) and the dimensions of the door is (x) by (3x).

Since, the window space and the door space cannot be painted along with the wall, the Area of the rectangular wall that will be painted will be given by the expression

(Total Area of the rectangular wall) - [(Area of window space) + (Area of door space)]

Area of a rectangular figure = Length × Breadth

Total area of rectangular wall = (4x+3) × 4x = (16x² + 12x) square units

Area of window space = (2x) × (x) = (2x²) square units

Area of door space = (x) × (3x) = (3x²) square units

Area of the wall to be painted = (16x² + 12x) - (2x² + 3x²)

= 16x² + 12x - 5x²

= (11x² + 12x) square units

Hope this Helps!!!

6 0
3 years ago
A line passes through the point (4,3) and has a slope of 9/2. find the equation of the line
kati45 [8]

Answer:

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Step-by-step explanation:

4 0
3 years ago
How do you work out the unit rates?
ElenaW [278]
You work out unit rates by making the denominator 1
6 0
3 years ago
Read 2 more answers
Can you please help. Also remember to explain.
GarryVolchara [31]

Answer:

Yes

Step-by-step explanation:

The answer using distributive property is the same as using original way to caculate it.

3+5(2+4) = 3+5(6) =3+20 =33

5 0
3 years ago
Read 2 more answers
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