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Alika [10]
3 years ago
13

Which is an equivalent expression

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
8 0

Answer:

the answer to that is the second one, 4^-4

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X+y=3 x-y=1 find the Find the determinants
Mkey [24]

Answer:

  • D = -2
  • Dx = -4
  • Dy = -2

Step-by-step explanation:

<u>System Determinant</u>

The determinant of the system is the determinant of the matrix of coefficients:

  D=\left|\begin{array}{cc}1&1\\1&-1\end{array}\right|=(1)(-1)-(1)(1)=-2

<u>X Determinant</u>

This is the determinant of the matrix with the x-coefficients replaced by the constants.

  D_x=\left|\begin{array}{cc}3&1\\1&-1\end{array}\right|=(3)(-1)-(1)(1)=-4

<u>Y Determinant</u>

This is the determinant of the matrix with the y-coefficients replaced by the constants.

  D_y=\left|\begin{array}{cc}1&3\\1&1\end{array}\right|=(1)(1)-(3)(1)=-2

_____

This problem didn't ask, but the solution is ...

  x = Dx/D = -4/-2 = 2

  y = Dy/D = -2/-2 = 1

  (x, y) = (2, 1)

3 0
3 years ago
Round 348 to the nearest hundred. A. 350 b. 400 c. 300 d. 340
Tom [10]
B 400 will be your answer to 348
4 0
3 years ago
Read 2 more answers
Attachment Below! Help Pls!
Elina [12.6K]

Answer:

D=3+4h becausw they are counting by 3 starting from four

7 0
3 years ago
Read 2 more answers
24 red flowers and 18 white flowers will be equally divided into groups. Find the greatest number of groups that can be created
mariarad [96]

Given:

The number of red flowers =24

The number of white flowers = 18

As flowers divided equally.

\begin{gathered} 24=4\times6 \\ 18=3\times6 \end{gathered}

The HCF ( highest common factor) of 24 and 18 is 6.

The largest number of group that can be created is 6.

4 0
1 year ago
The three inside angles (A,B and C) of a right angled triangle are in the ratio 7:18:11
Anastasy [175]

This is overdetermined.  Without looking at the ratio (except for the order of the sides) the actute angles in a right triangle are complementary so the answer must be:

Answer: A=35°, C=90°, B=55°

We can do it the way they like.

7+18+11 =36

so to get 180 degrees we need to scale the ratio elements by a factor of 5.

7:18:11=35:90:55

A is the smallest.  We see C is indeed a right angle and B is complementary to A.

6 0
4 years ago
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