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jasenka [17]
3 years ago
12

Can 4x-2y=12x+2y=8 be solved by adding one of the original equations to the other

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0

Answer:

No you can't add problems together, but you can use elimnation

Step-by-step explanation:

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Mr. Simpson is buying jerseys for his High School football team. Thejerseys cost $0 each and there is a processing fee of $65 to
Rina8888 [55]

ANSWER

The linear equation is: y = 80x + 65

Te cost for 40 football jerseys: $3265

EXPLANATION

Let 'x' be the number of jerseys and 'y' the cost of x jerseys.

Each jersey costs $80, so the cost of x jerseys is 80x. There's also an extra fee for procesing of $65, which is the same no matter how many jerseys they buy.

Therefore, the cost 'y' of x jerseys is:

y=80x+65

Now we want to know the cost of 40 football jerseys, so we just have to replace x by 40 and solve:

\begin{gathered} y=80\cdot40+65 \\ y=3200+65 \\ y=3265 \end{gathered}

5 0
1 year ago
Anyone????? x= what???
ICE Princess25 [194]

Answer:

x=66°

Step-by-step explanation:

48+x+x=180

2x=180-48

2x=132

x=132/2=66

6 0
3 years ago
Read 2 more answers
...............................
AlekseyPX

Answer:

$8

Step-by-step explanation:

320 x 20% = 64

64 x (1/8) = 8

I hope this helped!

6 0
2 years ago
Read 2 more answers
The inequality x+c>-2.55 has the solution x>4.85 What is the value of c? How do you know?​
Novay_Z [31]

Answer:

\large\boxed{c=-7.4}

Step-by-step explanation:

x+c>-2.55\qquad\text{subtract c from both sides}\\\\x>-2.55-c\\\\\text{We have the solution}\ x>4.85.\ \text{Therefore}\\\\-2.55-c=4.85\qquad\text{add 2.55 to both sides}\\\\-2.55+2.55-c=4.85+2.55\\\\-c=7.4\qquad\text{change the signs}\\\\c=-7.4

7 0
3 years ago
Please help!!!
lilavasa [31]
The answer to question #1 is x = 7

For a line to be parallel to x = 8, it has to start with x = some number. Such a line would have an undefined slope.

Now, x = y is a line that goes through the origin. It has a slope of 1.

The answer to question #2 is y = 7

If a line is perpendicular to x = some number, then it has to be y = some number.

And this perpendicular line has to go through the point (4,7). So what is the y-value of this point, since the equation starts with y? The y-value is 7. So the equation has to be y = 7
5 0
3 years ago
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