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ASHA 777 [7]
3 years ago
5

Separate the number 219 into three parts. The second number is two less than 5 times the first number, and the third number is 4

more than the first number.
Mathematics
1 answer:
Sav [38]3 years ago
4 0
Let us assume the first number = x
Then the second number = 5x -2
The third number = x + 4
The total number that needs to be divided into three parts is 219
Then we can write the equation as
x + 5x - 2 + x + 4 = 219
7x + 2 = 219
7x = 219 - 2
7x = 217
x = 217/7
  = 31
Then
First number = 31
Second number = 5x - 2
                           = (5 * 31) - 2
                           = 155 -2
                          = 153
Third number = x + 4
                       = 31 + 4
                       = 35
So the three numbers are 31, 153 and 35.
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8 0
4 years ago
As part of a study of the treatment of anemia in cattle, researchers measured the concentration of selenium in the blood of 36 c
iris [78.8K]

Answer:

Step-by-step explanation:

Given that a  part of a study of the treatment of anemia in cattle, researchers measured the concentration of selenium in the blood of 36 cows who had been given a dietary supplement of selenium (2 mg/day) for one year.

If x is the selenium concentration then

X has mean= 6.21 mg/dl

and std dev = 1.84

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std error of sample = \frac{1.84}{\sqrt{36} } \\=0.307

Margin of error for 95%

1.96(0.307)=0.602

Confidence interval = (6.21-0.605, 6.21+0.605)\\= (5.605, 6.815)

4 0
4 years ago
Can someone plz help 16x - 26c / x = ?
Lerok [7]

Answer:

-10c

Step-by-step explanation:

16x

-26c/x

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6 0
4 years ago
what is the least number that must be added to 2000 so that the sum is divisible exactly 10,12,16and 18 ? do it step by step
Rudiy27

The integers divisible by any set of positive integers are the multiples of their LCM

let us first write the factored form of each

10 = 2×5

12 = 2×2×3

16 = 2×2×2×2

18 = 2 x3×3

Now we will find lcm of these numbers

LCM = 2×2×2×2×3×3×5 = 720

The multiples of 720 are divisible by 10,12,16 and 18.

2000/720 = 2.777777...

The least integer greater than that is 3, so 3×720 = 2160 is the least integer greater than 2000 that is divisible by 10,12,16 and 18.

so if we need to find what must be added to 2000 so that the sum is divisible by 10,12,16 and 18, we must subtract 2000 from 2160

2160-2000=160

so we must add 160 to 2000 so that the sum is divisible exactly 10,12,16and 18

5 0
4 years ago
Before he left the house to go on a walk, Curtis played a video game. He started with O points, lost 8
erica [24]

Answer:

-22

Step-by-step explanation:

given= 0

lost= -8 times 3  =  -24

won= 4    -24+4=-20

lost= -2   -20-2=-22

Answer=-22

5 0
3 years ago
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