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Aleksandr-060686 [28]
3 years ago
8

Really need help on this , thanks so much! (:

Mathematics
1 answer:
Mazyrski [523]3 years ago
7 0
-2y>12x-42
y<21-6x
so a is true
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PLEASE HELP I'LL GIVE YOU POINT PLEASE GEOMETRY WORK
Monica [59]

Answer:

I:  82.1

Step-by-step explanation:

4 0
2 years ago
If $x$, $y$, and $z$ are positive integers such that $6xyz+30xy+21xz+2yz+105x+10y+7z=812$, find $x+y+z$.
harina [27]

Answer:

10

Step-by-step explanation:

When we simplify we get $$z(6xy+21x+2y+7)+30xy+105x+10y=812.$$

Then we continue to factor to get: (z+5)(6xy+21x+2y+7)&=847.

We then see that we can factor (6xy+21x+2y+7) into (z+5)(3x+1)(2y+7)&=847.

we then do the prime factorization of 847, which i think is,  7*11*11. we have to find the numbers that multiply to 847 and then plug them into z+5, 3x=1,2y+7.

It has to be a positive, non-negative integer, right?

We also see that 3x+1=11 so we see that x=10/3 (which wont work).

So 3x+1=7, so x=2.

So 11 has to be in another term. It has to be in 2y+7=11 so y=2

for the last term we get z+5=11 so z=6

2+2+6=10

Hope this helps and if you want please consider giving me brainliest. :)

8 0
3 years ago
Find the 9th term of the geometric sequence 2, -10 50 -250
tigry1 [53]

Answer:

781250

Step-by-step explanation:

We first need to find the common ratio

-10 /2 = -5

50 / -10 = -5

The common ratio is -5

an = a (r) ^ (n-1)

a9 = 2 ( -5) ^(9-1)

     = 2 (-5)^8

      =781250

7 0
2 years ago
Need help asap on this one
vagabundo [1.1K]
The answer is the third option, it will run out in 8 days.
6 0
3 years ago
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Complete the sentence. the midpoint btween 2 and 10 is
kvv77 [185]

Answer:

5

Step-by-step explanation:

Divide 10 by 2, the result of which is 5, this is the y coordinate of the midpoint

8 0
2 years ago
Read 2 more answers
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