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Korolek [52]
3 years ago
14

-2x+5y=-15 5x+2y=-6 what is the solution

Mathematics
1 answer:
nlexa [21]3 years ago
5 0
<h2>Greetings!</h2><h3>To solve this, you can multiply one of the equations by a number so that one of the unknown values are the same as the other equation. Or simply multiply both numbers before the x together:</h3>

(-2x + 5y = -15 ) x 5 =

-10x + 25y = -75

(5x+2y=-6) x -2 =

-10x -4y = 12

<h3>Now, you can add or minus the two equations, but seeing as both values before the x are negative we can add the two equations to cancel out the x:</h3>

-10x -4y = 12 +

-10x + 25y = -75 =

0x + 21y = -63

21y =  -63

<h3>Simply divide -63 by 21 to find y:</h3>

-63 ÷ 21 = -3 , so the value of y = -3


<h3>Now you can substitute this value into one of the equations:</h3>

5x + 2y = -6

5x + 2(-3) = -6

5x = -6 - (-6)

5x = -6 + 6

5x = 0

x = 0

<h3>So that means x = 0 and y = -3</h3>
<h2>Hope this helps!</h2>


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(5^49/5^48)+4^0−(1)^79⋅(−3/−4^9)^0
MrMuchimi

Answer:

I believe it is 3.75

Step-by-step explanation:

(5^49/5^48)+4^0−(1)^79⋅(−3/−4^9)^0

5+1−(1)^79⋅(−3/−4^9)^0

5+1−(1)^79

5⋅(−3/−4^9)^0

-3 divided by -4 to the power of 9 to the power of 0=0.75

5 times 0.75=3.75

Hope this is correct! xx

3 0
2 years ago
5. A hat contains 13 tickets with numbers 1 to 13 on them. If two tickets are drawn from the hat
Brilliant_brown [7]

Answer:

3.5

Step-by-step explanation:

the original probability is 7/6 favoring odd

4 0
2 years ago
FIND THE VALUEOF THE VARIBLE AND FILL THE BLANK.
ludmilkaskok [199]

Answer:

f = 2

g = 8

h = -9

k = 40

m = 1

Step-by-step explanation:

Equation 1:

23f - 17 = 29

Add 17 to both sides. This undoes the -17.

23f = 29 + 17

Add 17 to 29 to get 46.

23f = 46

Divide both sides by 23. This undoes the multiplication by 23.

f = 46/23

Divide 46 by 23 to get 2.

f = 2

Equation 2:

2(3g + 4) = 56

Divide both sides by 2. This undoes the multiplication by 2.

3g + 4 = 56/2

Divide 56 by 2 to get 28.

3g + 4 = 28

Subtract 4 from both sides. This undoes the +4.

3g = 28 - 4

Subtract 4 from 28 to get 24.

3g = 24

Divide both sides by 3. This undoes the multiplication by 3.

g = 24/3

Divide 24 by 3 to get 8.

g = 8

Equation 3:

h + 9 = 0

Subtract 9 from both sides. This undoes the +9.

h = 0 - 9

Any number subtracted from 0 gives its negation.

h = -9

Equation 4

3(k - 8) = 96

Divide both sides by 3. This undoes the multiplication by 3.

k - 8 = 96/3

Divide 96 by 3 to get 32.

k - 8 = 32

Add 8 to both sides. This undoes the -8.

k = 32 + 8

Add 8 to 32 to get 40.

k = 40

Equation 5:

5m - 5 = 0

Add 5 to both sides. This undoes the -5

5m = 0 + 5

Anything plus 0 gives itself.

5m = 5

Divide both sides by 5. This undoes the multiplication by 5

m = 5/5

Anything divided by itself gives you 1.

m = 1

4 0
3 years ago
A line has this equation: y = -2x-5 Write an equation for the parallel line that goes through (-3,-5).​
zhuklara [117]

Answer:

Step-by-step explanation:

y + 5 = -2(x + 3)

y + 5 = -2x - 6

y = -2x - 11

3 0
3 years ago
What is the volume of this cube
JulsSmile [24]
The formula is length*width*height. Your answer is 105 inchesx^{2}
3 0
2 years ago
Read 2 more answers
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