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seropon [69]
3 years ago
12

Simplify each expression, if possible. 13. (2+ 5xi)(7- xi)

Mathematics
1 answer:
vaieri [72.5K]3 years ago
4 0

Answer:

Step-by-step explanation:

(2+5xi)(7-xi)=2(7-xi)+5xi(7-xi)

=14-2xi+35xi-5x²i²

=14+33xi-5x²(-1)

=14+33xi+5x²

=14+5x²+33xi

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Select the three statements that are true. A. -11 > -6 B. -5 > -7 C.-4 > -6 D. -9 > 7 E. 8 (-1 F. -5 -4​
OLEGan [10]

Answer: B, C, And F

Step-by-step explanation:

My answer is correct because, for the negative numbber whatever is close to 1 like -1 is greater then the other negative number.

#AnimePower

4 0
3 years ago
Graph the system of equations on your graph paper to answer the question.
scZoUnD [109]
<span>y=x-4
y=-x+6 
---------------------
Substitute x - 4 for y in </span>y=-x+6 
x-4=-x+6<span>
--------------------------------
Add X on each side
</span><span>x-4+x</span>=-<span>x+6+x
</span>2x - 4 = 6
--------------------------------------
Add 4 on each side
<span>2x-4+4</span>=<span>6+4
</span>2x = 10
------------------------------------------------
Divide by 2 on each side
2x ÷ 2 = 10 ÷ 2
x = 5
Now we have X
================================================================
To find Y we substitute 5 for x in y=<span>x-<span>4
</span></span>y = 5 - 4
y = 1
-----------------------------------------------------
Your answers are Y = 1 and X = 5

8 0
3 years ago
What is the coefficient of y int the expression 2x4+3y
lapo4ka [179]
The coefficient of y = 3

coefficient = the constant in front of a variable
Constant means that the number will not change.


hope this helps
6 0
4 years ago
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Diano4ka-milaya [45]
X+y=7 and 16x+25y=148
8 0
3 years ago
A bag contains three red marbles, six blue marbles, and three yellow marbles. What is the probability of selecting one red marbl
Fed [463]

A bag contains three red marbles, six blue marbles, and three yellow marbles.

therefore total no. of marbles = 3 + 6 + 3 = 12

total no. of red marble = 3

therefore probablity of selecting one red marble is 3/12 = 1/4

again total no. of blue marbles is 6

therefore probability of selecting one blue marble is 6/12 = 1/2

now total probability of selecting one red ball replacing it then selecting one blue marble is. 1/4 * 1/2 = 1/8

4 0
3 years ago
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