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3 years ago

What's the answer to -7=c-6

Mathematics

1 answer:

son4ous [18]3 years ago

6 0

Simple...

you have: -7=c-6

You want to isolate the variable c

-7=c-6

-7=c-6
+6 +6

-1=c

Thus, your answer.

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Solve the system using elimination: -3x - 3y = 12 -9x + 3y = -24<br><br>The answer is not (-1,-3)

FinnZ [79.3K]

Answer:

{x = 1, y = -5

Step-by-step explanation:

Solve the following system:

{-3 x - 3 y = 12 | (equation 1)

{3 y - 9 x = -24 | (equation 2)

Swap equation 1 with equation 2:

{-(9 x) + 3 y = -24 | (equation 1)

{-(3 x) - 3 y = 12 | (equation 2)

Subtract 1/3 × (equation 1) from equation 2:

{-(9 x) + 3 y = -24 | (equation 1)

0 x - 4 y = 20 | (equation 2)

Divide equation 1 by 3:

{-(3 x) + y = -8 | (equation 1)

{0 x - 4 y = 20 | (equation 2)

Divide equation 2 by 4:

{-(3 x) + y = -8 | (equation 1)

{0 x - y = 5 | (equation 2)

Multiply equation 2 by -1:

{-(3 x) + y = -8 | (equation 1)

{0 x+y = -5 | (equation 2)

Subtract equation 2 from equation 1:

{-(3 x)+0 y = -3 | (equation 1)

{0 x+y = -5 | (equation 2)

Divide equation 1 by -3:

{x+0 y = 1 | (equation 1)

{0 x+y = -5 | (equation 2)

Collect results:

Answer: {x = 1 , y = -5

5 0

3 years ago

What is b? 0=-1/5(-1)+b

dybincka [34]

Answer:

b= -1/5

Step-by-step explanation:

Though a variable's sign changes when it is multiplied by -1, its absolute value does not. Therefore, we can eliminate the 1:

1/5+b=0

b+1-1/5=0-1/5

b+0/5= 0 -1/5

b=0 -1/5

and you have b= -1/5 as your answer

4 0

3 years ago

Read 2 more answers

Evaluate -5 exponent 3

Snezhnost [94]

$-5^3 = -5 * -5 * -5\\-5 * -5 = 25\\25 * -5 = -125$

The answer is -125.

5 0

3 years ago

(3k-2)(5k+4) find each product step by step

Lubov Fominskaja [6]

Step-by-step explanation:

(3k - 2)(5k + 4)= 15 k^2 +12k - 10 k - 8 = 15 k^2 + 2k -8

6 0

3 years ago

50 POINTS TO WHOEVER CAN ANSWER QUESTIONS 1-10

Trava [24]

Answer:

1) x = 4 2) x = 4 3) x = -4 4) x = 3 5) x = 5 6) x = 9 7) x = -8

8) x = 11 9) x = -5 10) x = -4

Step-by-step explanation:

Alternate Exterior and Alternate Interior angles are equal to each other. Just set the numbers or equations the give you equal to each other.

Question 1: Question 2: Question 3: Question 4:

33x+3=135 120=31x-4 120=x+124 40x+5=42x-1

33x=132 124=31x -4=x 6=2x

x=4 x=4 x= -4 x=3

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20x+4=19x+9 11x= -9+12x 80=x+88 10x+20=12x-2

-5= -x -x = -9 -8 = x 22=2x

x=5 x= 9 x= -8 x=11

Question 9: Question 10:

70=x+75 130=x+134

-5 = x -4 = x

x = -5 x= -4

8 0

3 years ago

Read 2 more answers