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andrey2020 [161]
4 years ago
12

All questions are about this system of equations:

Mathematics
1 answer:
Amiraneli [1.4K]4 years ago
8 0
5x + 18y = 23
x + 3y = 2 .....multiply by -5
----------------
5x + 18y = 23
-5x - 15y = -10 (result of multiplying by -5)
----------------add
3y = 13 <=== the resulting equation

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Need help ASAP thank you!!!
Juliette [100K]

Answer:

3/6

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please help i need the answers fast <br><br><br><br><br><br> A 19<br> B 28<br> C 33<br> D 35
Aliun [14]

Answer:

the answer for that is 35 letter D

6 0
3 years ago
When one quarter of a number is subtracted from one third of the number, the result is 7
Rzqust [24]
The number ... n
one quarter of the number ... 1/4 of n = 1/4 * n
one third of the number ... 1/3 of n = 1/3 * n
one quarter of the number is subtracted from one third of the number ... 1/3 * n - 1/4 * n
the result is 7 ... = 7

We can put it together: 
1/3 * n - 1/4 * n = 7
4/12 * n - 3/12 * n = 7
1/12 * n = 7     /*12
n = 7 * 12
n = 84

The number you are looking for is 84.
5 0
3 years ago
Need answers ASAP
a_sh-v [17]
We know, Volume of a Sphere = 4/3 πr³
v = 4/3 * 3.14 * 18³
v = 4.186 * 5832
v = 24,416.64 cm³

Volume of a Sphere = 4/3 πr³
v = 4/3 * 3.14 * 12³
v = 4.186 * 1728
v = 7234.56 cm³

Difference = 24,416.64 - 7234.56 = 17182.08

In short, Your Answer would be: 17182.08 cm³

Hope this helps!
6 0
3 years ago
Find the quotient,a. 70 /10 =a
Orlov [11]
  • The answer is 7 because 70 divided by 10 is 7
8 0
4 years ago
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