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Bad White [126]
3 years ago
15

Solve the system of equations by substitution and show work. ​​y=−6x+13 y=3x+4

Mathematics
2 answers:
sukhopar [10]3 years ago
6 0

Answer: x= 1 , y = 7

Step-by-step explanation:

y = -6x + 13 ................. equation 1

y = 3x + 4 ................ equation 2

substitute y = 3x + 4 into equation 1 , then we have

3x + 4 = - 6x + 13

collect the like terms , we have

3x + 6x = 13 - 4

9x = 9

x = 1

substitute x = 1 into equation 2 , we have

y = 3(1) + 4

y = 3 + 4

y = 7

Therefore : x = 1 and y = 7

kvasek [131]3 years ago
5 0

Answer:

(1, 7 )

Step-by-step explanation:

Given the 2 equations

y = - 6x + 13 → (1)

y = 3x + 4 → (2)

Substitute y = 3x + 4 into (1)

3x + 4 = - 6x + 13 ( add 6x to both sides )

9x + 4 = 13 ( subtract 4 from both sides )

9x = 9 ( divide both sides by 9)

x = 1

Substitute x = 1 into (2) for corresponding value of y

y = 3(1) + 4 = 3 + 4 = 7

Solution is (1, 7 )

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X/33=-2/3i don't know how to solve this some one help me please
Delvig [45]

Answer:

x/i=22

Step-by-step explanation:

x/33=2/3*i

*33       *33

x=2/3*33*i

/i              /i

x/i=2/3*33

x/i=22

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3 years ago
6x-14<-14 or 3x+10>13
kow [346]

Step-by-step explanation:

not sure the question but I can solve the equations

6x-14<-14

6x<0

×<0

3x+10>13

3x>3

×>1

7 0
2 years ago
When Mohammed was born, the baby was 21 inches tall. at his last check up, he was 38 inches tall. what is the percent increase i
denis23 [38]

Answer:

80.95

Step-by-step explanation:

Percentage increase = \frac{New Value - Old Value}{Old Value} *100

=> (38-21)* 100/21 = 80.9523%

The answer round it to the nearest 100th = 80.95%

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3 years ago
If the pattern continues, how many stars will be in the Stage 15 figure?
Paha777 [63]

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4 0
3 years ago
Solve for x. 5 x − 19 ≤ 1 OR − 4 x + 3 &lt; − 6
k0ka [10]

5x - 19 \leqslant 1

change

\leqslant  \: to \:  =

given you

5x - 19 = 1

making x the subject by transferring the -19 to the right hand side of the equation

5x = 19 + 1

5x = 20

dividing through by 5

\frac{5x}{5}  =  \frac{20}{5}

x = 4

{{x:x  \leqslant 4}}

also given

- 4x + 3 < -  6

change the operation sign to =

- 4x + 3 =  - 6

- 4x =  - 6 - 3

- 4x =  - 9

dividing through by -4

\frac{ - 4x}{ - 4}  =  \frac{ - 9}{ - 4}

x =  \frac{9}{4}

so the truth set is

{x:x>9/4}.

The < sign changes to > because we divided by a negative number when solving for x

4 0
3 years ago
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