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labwork [276]
3 years ago
6

How do you do this it is hard pleas help me

Mathematics
1 answer:
erastovalidia [21]3 years ago
5 0
6x-1=126
126 divided by 6=21
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How many positive four-digit integers are multiples of 5 and less than 4,000
Volgvan

Answer:

  Number of positive four-digit integers which are multiples of 5 and less than 4,000 = 600

Explanation:

 Lowest four digit positive integer = 1000

 Highest four digit positive integer less than 4000 = 3999

 We know that multiples of 5 end with 0 or 5 in their last digit.

 So, lowest four digit positive integer which is a multiple of 5 = 1000

 Highest four digit positive integer less than 4000 which is a multiple of 5  = 3995.

 So, the numbers goes like,

       1000, 1005, 1010 .....................................................3990, 3995

 These numbers are in arithmetic progression, so we have first term = 1000 and common difference = 5 and nth term(An) = 3995, we need to find n.

          An = a + (n-1)d  

           3995 = 1000 + (n-1)x 5

           (n-1) x 5 = 2995

           (n-1) = 599

            n = 600

 So, number of positive four-digit integers which are multiples of 5 and less than 4,000 = 600

6 0
3 years ago
What is the value of x if HF = 4x+1 and AB = 12x-3?|<br><br><br> Given m
Reptile [31]

Answer: <em>x = 1.25</em>

Step-by-step explanation:

<em>HF - is the middle line of the triangle ABC.</em>

HF=\dfrac{1}{2} AB\\\\HF=4x+1\\AB=12x-3\\\\4x+1=\dfrac{1}{2}  \cdot (12x-3)\\\\4x+1=\dfrac{12x-3}{2} \\\\(4x+1) \cdot 2 =12x-3\\8x+2=12x-3\\8x+2-12x=12x-3-12x\\-4x+2=-3\\-4x+2-2=-3-2\\-4x=-5\\-4x \cdot (-1)=-5 \cdot (-1)\\4x=5\\4x \div 4=5 \div 4\\x=1.25

7 0
2 years ago
What are the possible solutions to this prblem?<br><br> n squared = 43
Nuetrik [128]

all the answers would be irrational.

7 0
3 years ago
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Rain fell at the steady rate of 2 inches every 3 hours.
Mamont248 [21]

what is your question then?

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3 years ago
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The exponential modeled below represents the number of bacteria growing after a certain number or hours has passed.
lorasvet [3.4K]

Answer:

I would say D because if you count how much they go up it's close. but if you dont agree I could also assume B.

8 0
2 years ago
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