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allsm [11]
3 years ago
9

7x - 3y = 42x - 4y = 1the solution to the system of equations is _____.

Mathematics
1 answer:
Mars2501 [29]3 years ago
4 0
7x - 3y = 4
2x - 4y = 1

Multiply the first equation by 4.
Multiply the second equation by -3

28x - 12y = 16
-6x + 12y = -3

Now add the equations.

22x = 13

x = 13/22

Now substitute x = 13/22 in the first original equation and solve for y.

7 * 13/22 - 3y = 4

91/22 - 3y = 88/22

-3y = -3/22

y = 1/22

Answer: x = 13/22, y = 1/22

y = 3/22
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Please tell me the answer plsss i will be sure to mrk u brainliest for the best answer
Finger [1]

Step-by-step explanation:

2^3 X 3^-4 X 5^2 / (2x5)^2 X 2 X 3^2 X 3^-6

I will simply the expression on the RHS if the bracket first

2^2 X 5^2 X 2 X 3^2 X 3^-6

= 2^3 X 3^-4 X 5^2

So, putting them together

Both sides have th same expression

They cancel out each other

Answer : 1

5 0
3 years ago
The radius of the planet Uranus is approximately 4 times the size of the radius of Earth. What does this tell you about the volu
Sonja [21]

Answer:

Step-by-step explanation:

Earth volume is approximately V = (4/3)πr³, and

Uranus volume is approximately V = (4/3)π(4r)³, or (4/3)π*64*r³

Comparing these two results, we see that the volume of Uranus is approximately 64 times greater than the volyume of Earth.

5 0
3 years ago
Read 2 more answers
Find the least number which when divisible by 20, 24, 32 and 38 leaves a remainder 5 in cach case
Olegator [25]

Answer:

18245

Step-by-step explanation:

We have to use L.C.M,

L.C.M(20,24,32,38)

2|20,24,32,38

2| 10 ,12 ,16 ,19

2| 5 , 6 , 8 , 19

2| 5 , 3 , 4 , 19

2| 5 , 3 , 2 , 19

L.C.M = 2 x 2 x 2 x 2 x 2 x 2 x 5 x 3 x 19

          = 18240

Now for each case remainder is 5,

So the number is 18240+5

=> 18245

7 0
3 years ago
Sienna, Rhys, and Micah are all reading the same book for school. Sienna has read 40% as far as Rhys has, and Rhys has read 40%
ruslelena [56]

Based on the fact that Sienna has read 60 pages, we can infer that Micha has read 375 pages of the book.

Sienna has read 40% of what Rhys has read and that corresponds to 60 pages. The number of pages read by Rhys is therefore:

<em>= Number of pages / Percentage read </em>

= 60 / 40%

= 150 pages

The 150 pages read by Rhys is 40% of what Micah has read. Micah has therefore read:

= 150 / 40%

= 375 pages

In conclusion, Micah has read 375 pages.

<em>Find out more at brainly.com/question/2807698.</em>

4 0
3 years ago
Draw pictures to show the number 326
Dovator [93]
3 hundreds 2 tens 6 ones
6 0
3 years ago
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