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Leona [35]
3 years ago
12

WHAT'S THE ERROR? A student says 3(n- 5) is equal to 3n - 5. What'sthe error?​

Mathematics
2 answers:
inn [45]3 years ago
8 0

Answer:

The student incorrectly used the Distributive property!

Step-by-step explanation:

The Distributive property says a(b+c)=ab+ac

In this problem the answer SHOULD be 3n-15, however the <u>student forgot to distribute the 3 to the -5</u>!

Fed [463]3 years ago
3 0

Answer: The student did not distribute correctly

Step-by-step explanation: The student did not distribute correctly. The student has 3n correct because he multiplied 3 by n but -5 is not correct. He was supposed to distribute the 3 to the -5 to get -15.

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Fofino [41]

Answer:

it is b i did it on eg 2020

Step-by-step explanation:

8 0
3 years ago
Twice the sum of a number and 5 equals 9 as a equation
ziro4ka [17]
Hello!

I believe it looks like this..

2*x+5=9

Btw, x = 3 is your answer if you're wondering..

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7 0
3 years ago
In which year will 67% of babies be born out of wedlock?
Leviafan [203]

Based on the trend of the increase in children born out of wedlock, if this trend keeps increasing, the year with 67% of babies born out of wedlock will be 2055 .

<h3>What year will 67% of babies be born to unmarried parents?</h3><h3 />

In 1990, the 28% of children were born out of wedlock and this trend was increasing by 0.6% per year.

If the trend continues, the number of years till 67% of children born out of wedlock will be:

= (67%  - 28%) / 0.6%

= 65 years

The year will be:

= 1990 + 65

= 2055

The first part of the question is:

According to the National Center for Health Statistics, in 1990, 28% of babies in the United States were born to parents who were not married. Throughout the 1990s, this percentage increased by approximately 0.6 per year.

Find out more on benefits of marriage at brainly.com/question/12132551.

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3 0
2 years ago
Help me answer this please
nikitadnepr [17]

Answer:

x=115 y=65

Step-by-step explanation:

You get 115 for X because angle x is vertical to 115 degrees.

You get 65 because y is supplementary to x, and 180-65=115.

4 0
4 years ago
Read 2 more answers
Find four consecutive even integers such that if the sum of the first and third is multiplied
Alenkasestr [34]

Answer:

Step-by-step explanation:

-8-10,-12-14

-8 plus -12 is -20

-20 times 5 is -100

-14 times 8 is -112

-100 is 12 more than -112

6 0
3 years ago
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