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LenKa [72]
3 years ago
15

Write an algebraic expression for “5 times the sum of a number and 3”

Mathematics
1 answer:
Firdavs [7]3 years ago
3 0

Answer:

5(x+3)

Step-by-step explanation:

:)

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use the matrix tool to solve the system of equations enter the answer as an ordered pair. 8x+5y=9 -x+y=7
Dimas [21]

Answer:

x = -44/13

y = -65/13

Step-by-step explanation:

Using matrix form means using the crammers rule

The matrix form of the expression is written as;

\left[\begin{array}{ccc}8&5\\-1&1\\\end{array}\right] \left[\begin{array}{ccc}x\\y\\\end{array}\right] = \left[\begin{array}{ccc}9\\7\\\end{array}\right]

AX = B

taking the determinant of A;

|A| = 8(1) - 5(-1)

|A| = 8 + 5

|A| = 13

After replacing the first row with the column matrix;

A_x =\left[\begin{array}{ccc}9&5\\7&-1\\\end{array}\right]

|Ax| = 9(-1)-5(7)

||Ax| = -9 - 35

|Ax| = -44

x = |Ax|/|A|

x = -44/13

similarly for y

A_x =\left[\begin{array}{ccc}8&9\\-1&7\\\end{array}\right]

|Ay| = 8(7)+9

|Ay| = 56+9

|Ay| = 65

y = |Ay|/|A|

y = -65/13

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3 years ago
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The word of God has a profound way of encouraging its readers to be strong and courageous in the midst of tumultuous circumstances. These inspirational quotes are a great starting point for morning prayers and hope-filled conversations. Use them as an ever-present reminder all things are possible with God, and His mercies are new every morning.
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Which expression has the least value when x = 100?
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Answer:

The answer is 1-x

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