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Romashka [77]
3 years ago
13

1.)Write a number between 0 and 20 that has...

Mathematics
1 answer:
strojnjashka [21]3 years ago
4 0
A) two factors- 2 (1,2)
b) four factors- 6 (1,2,3,6)
c) five factors- 16 (1,2,4,8,16)
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(PLEASE HELP ASAP)
UNO [17]

9514 1404 393

Answer:

  A. 3×3

  B. [0, 1, 5]

  C. (rows, columns) = (# equations, # variables) for matrix A; vector x remains unchanged; vector b has a row for each equation.

Step-by-step explanation:

A. The matrix A has a row for each equation and a column for each variable. The entries in each column of a given row are the coefficients of the corresponding variable in the equation the row represents. If the variable is missing, its coefficient is zero.

This system of equations has 3 equations in 3 variables, so matrix A has dimensions ...

  A dimensions = (rows, columns) = (# equations, # variables) = (3, 3)

Matrix A is 3×3.

__

B. The second row of A represents the second equation:

  0x_1+1x_2+5x_3=-1

The coefficients of the variables are 0, 1, 5. These are the entries in row 2 of matrix A.

__

C. As stated in part A, the size of matrix A will match the number of equations and variables in the system. If the number of variables remains the same, the number of rows of A (and b) will reflect the number of equations. (The number of columns of A (and rows of x) will reflect the number of variables.)

6 0
3 years ago
A 6-inch candle burns down in 12 hours. After how many hours will it have burned<br> 4 inches?
Zielflug [23.3K]

Answer:

8 hours

Step-by-step explanation:

Let's first find how many inches the candle would have burned in 1 hour.

6 in:12 hours

x: 1 hour

We can divide 12 by 12 to get 1. This means we need to divide 6 by 12 to get x

x=1/2 inches

1/2 inches:1 hour

4 inches: x hours

We divide 4 by 1/2 to get 8. 1/2*8=4. This means...

x=1 hour*8=8 hours

6 0
3 years ago
A rectangle with an area of 47 m² is dilated by a factor of 7. What is the area of the dilated rectangle? Do not leave your answ
PolarNik [594]
Area of rectangle = lb = 47 m^2

Dilation by a factor of 7 results in 1/7 l x 1/7 b = 1/49 lb = 1/49 (47) = 47/49 = 0.9592
8 0
3 years ago
Read 2 more answers
Your friend works as a salesman in a shop were she earns $200 a week. She is paid a commission of 5% of her sales. How much did
Jet001 [13]
4500/100 = 45 x 5 = $225
6 0
3 years ago
12.45 by 5 okokokookokokkok
jek_recluse [69]

Answer:

<h3>.<u>=</u><u> </u><u>2</u><u>.</u><u>4</u><u>9</u></h3>

Step-by-step explanation:

hope that will help you

6 0
3 years ago
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