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coldgirl [10]
2 years ago
5

I KNOW THIS ISNT MATH BUT PLEASE HELP! Which statements describe the

Mathematics
1 answer:
MrRissso [65]2 years ago
5 0

Answer:

lots of stuff

Step-by-step explanation:

snow lava and stone frfr

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If a and b are any two real numbers, explain how you calculate the difference . Be sure to include each of the following in your
Alchen [17]
Diffference between a and b
a-b

a. addition and subtraction
subtraction is adding, but going backwards in oposite direction

b.  negative, go to left, postive go to right

c. if negative is more than positive, then ending sign is negaitve
if positive is more than negative, then sign is positive
8 0
2 years ago
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

6 0
3 years ago
A line with a slope of 0 that passes through (6,-11)?
Kryger [21]
Sorry dude. Don’t know this one maybe if u ask your teacher or parent or sibling u can get it
3 0
2 years ago
Simplify the expression. −9(4 − 3j)
faltersainse [42]

Answer:

-36 + 27j

Step-by-step explanation:

−9(4 − 3j)

Distribute

-9 * 4  -9 * (-3j)

-36 + 27j

6 0
2 years ago
Read 2 more answers
What two numbers have a product of 34 and a sum of 19?
agasfer [191]

Answer:

2 and 17

Step-by-step explanation:

its easy to just think of what 34 is divisible by ...you can divide 34 by 2 and find out that 17 x 2 is 34 and when you add them together its 19

6 0
2 years ago
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