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Jlenok [28]
2 years ago
8

K2 + 18k + 81 what’s the factor completely

Mathematics
2 answers:
Vilka [71]2 years ago
8 0

Answer:

(K+9)^2

Step-by-step explanation:

You have to find what two numbers muliply to 81 and add to 18, in this case the numbers that satisfy that are 9 and 9. So you then get (k+9)(k+9) which is the same as (k + 9)^2.

LenaWriter [7]2 years ago
3 0

Answer:

The answer is (0)

Step-by-step explanation:

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Can someone help with this and explain thanks
Iteru [2.4K]

Answer:

42+34+14=90

Step-by-step explanation:

42 people are male

34 people study biology

14 males study biology (thats both)

6 0
3 years ago
Can somebody explain how to do this
s2008m [1.1K]

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Step-by-step explanation:

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7 0
3 years ago
Can you do 8 9for me
vitfil [10]

Answer:

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Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
John and Jenny together have 45 marbles. Both of them lost 5 marbles each and the product of the number of marbles they now have
Tju [1.3M]

Answer:

124÷2=62

Step-by-step explanation:

Each person has 62 marbles.

The beginning of the problem is not needed to answer the question. The only thing you need to know to answer the question is that they have 124 marbles together.

3 0
3 years ago
One number is four times another number. The sum of their reciprocals is 1/4 . What is the answer
Yakvenalex [24]
Using the information from the question, one can construct two equations:

4 z = x  ...  (1)

\frac{1}{z}  +   \frac{1}{x}   ... (2)

by substituting (1) into (2) to find x

\frac{1}{z} +  \frac{1}{4z}  =   \frac{1}{4}

\frac{5}{4z}  =   \frac{1}{4}

\frac{5}{4z}  =   \frac{1}{4}  

\frac{4z}{5}  =   \frac{4}{1}

\frac{4z}{1}  =   \frac{20}{1}

z =   \frac{20}{4}

⇒ z = 5

By substituting value of z into (1)

⇒ 4 (5) = x

⇒ x = 20

Thus the two numbers are 5 & 20 



4 0
3 years ago
Read 2 more answers
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