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LenKa [72]
3 years ago
13

one number is 7 times a first number. A third number is 100 more then the first number. if the sum of the three numbers is 721 f

ind the numbers.
Mathematics
1 answer:
zubka84 [21]3 years ago
5 0

b=7a

c=a+100

a+b+c=721

a+7a+a+100=721

9a=621

a=69

c=69+100

c=169

69+b+169=721

b+238=721

b=483

The numbers are 69, 483, and 169

I hope I helped you with your solution! If you could give me brainliest, I would be very thankful!

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Nataliya [291]

Answer:

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

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Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Ms. hernandez has 100 to spend on parking and admission to the zoo. The park will cost $7 and admission tickets will cost $15.50
Firdavs [7]
Number of people < (should be smaller than or equal to but I don't have that button on my keyboard) (100-7) / 15.50

103/15.50 = 6.64516...
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3 0
3 years ago
Determine whether the situation calls for a survey, an observational study, or an experiment.
Svetradugi [14.3K]

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8 0
3 years ago
50 POINTS!!!!!!!
nevsk [136]

Answer: Option C)1 over 15 minus 1 over x equals 1 over 20

Explanation:

Since, Micah can fill a box with books in 15 minutes.

Therefore, the work done by Micah in one minute= 1/15

Also, Sydney takes the books out puts them on a shelf.

And the times taken by Micah when Sydney is also taking the books outside from the self= 20 minutes

Therefore, the work done by Micah in one minute when Sydney  taking books out of the box= 1/20

Let Sydney alone takes x minutes to take books outsides the shelf.

Then, work done by Sydney in one minute=1/x

Thus, the work done by Sydney( by taking books out of the box)=  the work done by Micah - work done by Micah and Sydney simultaneously= 1/15-1/20

⇒1/x=1/15-1/20

⇒1/15-1/20=1/x

⇒1/15-1/x=1/20 is the required expression.

Therefore, Option C is correct.



4 0
3 years ago
Read 2 more answers
Hello pls help I'm dumb thx it's pre calc
Bumek [7]
(f-g)(x)=f(x)-g(x)=
\frac{2x+6}{3x}-\frac{\sqrt{x}-8}{3x}=
\frac{2x+6-(\sqrt{x}-8)}{3x}=
\frac{2x+6-\sqrt{x}+8}{3x}=
\frac{2x-\sqrt{x}+14}{3x}
answer is A
3 0
3 years ago
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