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Svetlanka [38]
3 years ago
10

If n represents a number, which of the following expressions represents the sum of one more than twice the number and three less

than 5 times the number? *
Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

the anwer is option 1

Step-by-step explanation:     7n+2

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On #4 I’m trying to find Arc RS and on
AnnyKZ [126]

Answer:128

Step-by-step explanation:

If you look at the circle. The two ones that look most like rs is the 64's. Therefore using logic you can just add 64 plus 64 to get 128. Hope it helps.

5 0
3 years ago
What is the value of r, the part of the job that Marina can complete in 1 hour?
EastWind [94]

Answer:

0.4

Step-by-step explanation:

so, Katherine can do 0.1 of the job per hour. (if she needs 10 hours for the job, each hour she can do the whole divided by the time, so 1/10, which is 0.1)

if in two hours she and Marina can be done, then Marina will do 1(the whole job)-2/10 (twice as much as she can do in an hour)=0.8 of the job. So if Marina does 0.8 of the job in two hours, each hour she will do half of it: 0.4 - and this is the correct answer 

5 0
3 years ago
Two complex numbers have a sum of 14 and a product of 74. Write either of the two numbers.
IrinaVladis [17]

Answer:

Hello,

Step-by-step explanation:

The 2 numbers are roots of the equation:

U²-14U+74=0

Discriminant=14²-4*74=-100

<u>U=7-5i or U=7+5i</u>

3 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP!!!
Dimas [21]

Step-by-step explanation:

5x^2+2x=1

5x^2+2x-1=0

x=-b+/-√b^2-4ac÷2a

x=-2+/-√-2^2-(4×5×-1)÷2×5

x=-2+/+√4--20÷10

x=-2+/-√24÷10

x=-2+√24÷10 or -2-√24÷10

x=-2+4.9÷10 or -2-4.9÷10

x=2.9÷10 or -6.9÷10

x=0.29 or -0.69

4 0
3 years ago
Read 2 more answers
Help me please on number 1......
dangina [55]
849-1.5=847.5
6.8-4.8=2

847.5 divided by 2 =423.75
8 0
3 years ago
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