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wel
3 years ago
6

-4x+y=6 -5x-y=21 solve by substiution

Mathematics
2 answers:
gulaghasi [49]3 years ago
8 0

Answer:

55

Step-by-step explanation:

55 is your answer

babunello [35]3 years ago
6 0

Answer:

Step-by-step explanation:

Subtract

2

y

from both sides of the equation.

x

=

12

−

2

y

−

x

=

−

y

−

6

Replace all occurrences of

x

with

12

−

2

y

in each equation.

Tap for more steps...

−

12

+

2

y

=

−

y

−

6

x

=

12

−

2

y

Solve for

y

in the first equation.

Tap for more steps...

y

=

2

x

=

12

−

2

y

Replace all occurrences of

y

with

2

in each equation.

Tap for more steps...

x

=

8

y

=

2

The solution to the system is the complete set of ordered pairs that are valid solutions.

(

8

,

2

)

The result can be shown in multiple forms.

Point Form:

(

8

,

2

)

Equation Form:

x

=

8

,

y

=

2

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Miguel and three of his friends went to the movies. They originally had a total of $40. Each boy had the same amount of money an
inysia [295]

Answer:

x = (40/4)-7.50

x= (10)-7.50

x = 2.50

Step-by-step explanation:

each boy had 2.50 left after the movie because miguel went with 3 other boys, which makes four of them all together. If they had forty dollars all together and all had the same amount of money, you can determine that amount by dividing forty(total money) by 4(number of boys). Which gets you to the answer of ten dollars each. Then you subtract the ticket cost(7.50) from 10 dollars, which gets you to 2.50 left over.

4 0
3 years ago
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elena-s [515]

Answer:

Step-by-step explanation:

Basically your gonna break up both numbers into smaller numbers and add them to get the same answer

5 0
3 years ago
Pattern x and y are generated using the rules. Pattern x: start with 0 and add 6. Pattern y: start with 1 and multiply 2. Patter
timama [110]

Answer:

Pattern x: 0,6,12,18

Pattern y: 1,2,4,8

Step-by-step explanation:

Given:

Pattern x: start with 0 and add 6.

Pattern y: start with 1 and multiply 2.

To find: patterns x and y

Solution:

Pattern x: 0,0+6,0+6+6,0+6+6+6=0,6,12,18

Pattern y: =1,1(2),1(2)(2),1(2)(2)(2)=1,2,4,8

7 0
3 years ago
PLEASEE SHOW WORK ON ALL (except #3 but also answer :D) 10 POINTS EACH QUESTION SO 50 POINTS + BRAINLY
Phantasy [73]
Grade level is this??
6 0
3 years ago
What is the 6th term of the geometric sequence where a1 = -4096 and a4 = 64?
Akimi4 [234]
\bf \begin{array}{llccll}
term&value\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
a_1&-4096\\
a_2&-4096r\\
a_3&-4096rr\\
a_4&-4096rrr\\
&-4096r^3\\
&64
\end{array}\implies -4096r^3=64
\\\\\\
r^3=\cfrac{64}{-4096}\implies r^3=-\cfrac{1}{64}\implies r=\sqrt[3]{-\cfrac{1}{64}}
\\\\\\
r=\cfrac{\sqrt[3]{-1}}{\sqrt[3]{64}}\implies \boxed{r=\cfrac{-1}{4}}\\\\
-------------------------------

\bf n^{th}\textit{ term of a geometric sequence}\\\\
a_n=a_1\cdot r^{n-1}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
r=-\frac{1}{4}\\
a_1=-4096\\
n=6
\end{cases}
\\\\\\
a_6=-4096\left( -\frac{1}{4} \right)^{6-1}\implies a_6=-4^6\left( -\frac{1}{4} \right)^5
4 0
3 years ago
Read 2 more answers
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