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Katena32 [7]
2 years ago
15

PLEASE HELP 100 points and brainliest. y= 3x — 5 y=6x — 8 solve with elimination

Mathematics
1 answer:
makvit [3.9K]2 years ago
4 0
<h2><u>Let's solve for X using elimination</u></h2><h2>\boxed{\fcolorbox{y=3x-5}}</h2><h3>Step 1: Flip the equation around:</h3><h3>\boxed{\fcolorbox{3x-5=y}}</h3><h3>Step 2: Add 5 to either side</h3><h3>\boxed{\fcolorbox{3x-5+5=y+5\\}}    </h3><h3>\boxed{\fcolorbox{3x=y+5\\}}</h3><h3>Step 3: Divide both sides by 3.</h3><h3>\boxed{\fcolorbox{\frac{3x}{3}=\frac{y+5}{3}  \\}}</h3><h3>\boxed{\fcolorbox{x=\frac{1}{3}y+\frac{5}{3}  \\}}              </h3><h3 /><h3>Answer is: \boxed{\fcolorbox{x=\frac{1}{3}y+\frac{5}{3}  \\}}.</h3><h3></h3><h3 />

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PLEASE HELP, I’m confused. I don’t know how to do this stuff... explain your answer. Thank you!!!!
Maurinko [17]

Answer:

C) y = 2x + 3

Step-by-step explanation: You have to substitute 1 for x & 5 for y & 2 for m, but 1st do the point slope form ---> slope intercept form.

y -Y1 = m(x - X1)

y - 5 = 2(x - 1)

y - 5 = 2x - 2

  +5          + 5

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4 0
3 years ago
What percent of a foot is in 3 inches.; 4 inches.; 6 inches.; 9 inches. ? 3 inches is _% of a foot 4 inches is _% of a foot 6 in
Aleksandr-060686 [28]

Answer:

3 inches is 25 percent of a foot

4 inches is 33.33 percent of a foot

6 inches is 50 percent of a foot

9 inches is 75 percent of a foot

Step-by-step explanation:

The first thing we need to do to solve this problem is to convert our measurements in feet to inches.

1 foot = 12 inches

we can now find our percentage with ease since we are now making comparisons, using the same unit of measurement as a reference.

To get the percentage of which 3 is of 12, we simply perform the following operation: We divide 3 by 12 then multiply it by a hundred percent.

(3/12) X 100 = 25 percent.

3 inches is 25 percent of a foot

Similarly,

4 inches = (4/12) X 100 = 33.33 percent of a foot

6 inches =(6/12) X 100 = 50 percent of a foot

9 inches = (9/12) X 100 = 75 percent of a foot

3 0
3 years ago
There are 3 forks in the silverware drawer. There are 4 more knives than forks, and there are twice as many spoons as knives. Ho
frosja888 [35]

Answer: There are 24 pieces of silverware in all.

Step-by-step explanation:

3+ 7 + 14 = 24

3 forks

There are 4 more knives than forks - 7 knives

There are twice as many spoons as knives - 7.2 = 14

5 0
3 years ago
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krek1111 [17]
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3 years ago
Find the zeros of the quadratic function. Solve by factoring. x^2+14x=-45
Reptile [31]

So, x^2 + 14 x + 49 - 4 = 0;

Then, we use the formula ( a + b )^2 = a^2 + 2ab + b^2;

We have ( x + 7 )^2 - 2^2 = 0;

Then, ( x + 7 )^2 - 2^2 = 0;

We use the formula a^2 - b^2 = ( a - b)( a + b );

We obtain ( x + 5 )( x + 9) = 0;

Then, x + 5 = 0;

x = -5;

x + 9 = 0;

x = - 9;

-5 and - 9 are the zeros of the quadratic function.

3 0
3 years ago
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