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Feliz [49]
3 years ago
15

Please help me!! what were the errors​

Mathematics
1 answer:
spayn [35]3 years ago
4 0

Answer:

see explanation

Step-by-step explanation:

Given

23x + xy - y + 3y + 5 - 20x + 6xy ← collect like terms

= (23x - 20x) + (xy + 6xy) + (- y + 3y) + 5

= 3x + 7xy + 2y + 5

He combined the coefficients of the x- term incorrectly

He combined the coefficients of the y- term incorrectly

He missed out the constant term ( + 5)

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Factor Trinomials:
notka56 [123]

Answer:

1. 2(x+2)(x+5)

2. 8(x+4)^{2}

Step-by-step explanation:

<u>Problem #1:</u>

1. Find the GCF (Greatest Common Factor)

GCF = 2

2. Factor out the GCF and simplify.

2(x^{2} +7x+10)

3. Factor x^{2} +7x+10

<u>Which two numbers add up to 7 and multiply to 10?</u>

2 and 5

<u>Rewrite the expression using the above.</u>

(x+2)(x+5)

4. Done!

2(x+2)(x+5)

<u>Problem #2:</u>

1. Find the GCF (Greatest Common Factor)

GCF=8

2. Factor out the GCF and simplify.

8(x^{2} +8x+16)

3. Use the perfect square formula. a^{2} +2ab+b^{2} =(a+b)^{2}

a = x\\b=4

(x+4)^{2}

4. Done!

8(x+4)^{2}

8 0
3 years ago
1. Determine if the two expressions are equivalent and explain your reasoning.
Elena-2011 [213]
1. Yes because of the constant and coefficient if you add it. Like the answer is 5m +4.

6 0
4 years ago
Select the correct answer.
SSSSS [86.1K]
Ahah coco die sucks math
4 0
3 years ago
Estimate what is 130% of 20. Show work please! I need the right answer!
aksik [14]
26 would 130% of 26%. 

20 would be 100% of itself leading us to X being 130%. 
That brings us to two equations of 20=100% and x=130%
20/x=100%/130%

20/x=100/130
(20/x)*x=(100/130)*x
20=0.769230769231*x
26/0.769230769231=x
26=x therefor x=26


3 0
4 years ago
Read 2 more answers
What is the probability that a fair die comes up six when it is rolled? (Enter the value of probability in decimal format and ro
Dmitriy789 [7]
There r 6 sides to 1 die......and there is only one 6...so the probability of rolling a 6 is 1/6 or 0.1666 rounded = 0.17
4 0
3 years ago
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