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tigry1 [53]
3 years ago
5

I WILL GIVE EXTRA POINTS

Mathematics
2 answers:
Rudiy273 years ago
8 0
I believe for number 3, the answer is x=-5 and for number 4, the answer is either x=21 or x=7
Alekssandra [29.7K]3 years ago
8 0

Answer:

3). -5. 4).7.

Step-by-step explanation:

3).CB + BA = CA

(x+15) + (x+13) = 18

2x + 28 = 18

2x = 18 - 28

2x = -10

x = -5.

4). ED + DC = EC

(2x - 7) + (x - 6) = 8

3x - 13 = 8

3x = 8 + 13

3x = 21

x = 7.

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tekilochka [14]
The statement that describes all of the values for which the graph is positive and decreasing is:

C.) ALL REAL VALUES OF X WHERE 1 < X < 3

The number 1 ensures that the value of x will remain positive.
Since x is less than 3, then the value of x is decreasing.
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Which is the value of the expression when n=3
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Step-by-step explanation:

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3 years ago
Factor the following expression<br><br> 28w^(4)x^(2)y^(7)+12w^(9)x^(8)
disa [49]

The expression after factorisation is 4w⁴x² (7y⁷ + 3w⁵x⁶)

<h3>What is an Expression ?</h3>

An expression is defined as a mathematical statement consisting of variables , constants and mathematical operators.

The expression given is

28w⁴x²y⁷+12w⁹x⁸

Factors of the given expression will be the common terms in both the terms

w⁴x² is common in the variable term

The HCF of 28 and 12 is 4

4w⁴x² (7y⁷ + 3w⁵x⁶)

The expression after factorisation is 4w⁴x² (7y⁷ + 3w⁵x⁶)

To know more about Expression

brainly.com/question/14083225

#SPJ1

6 0
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Simplify each of the following (5x+4y)(5x-4y) solve​
Tju [1.3M]

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=(5x+4y)(5x+−4y)

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=25x2−16y2

hope this helps!

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