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Liono4ka [1.6K]
3 years ago
13

What is the result of subtracting the second equation from the first? \begin{aligned} 2x+7y &= -8 \\\\ 2x-5y &= -1 \end{

aligned} 2x+7y 2x−5y ​ =−8 =−1 ​
Mathematics
1 answer:
krek1111 [17]3 years ago
5 0

Answer:

12y=-7

Step-by-step explanation:

We are given that two equations

2x+7y=-8

2x-5y=-1

We have to find the result when second equation is subtracting from the first equation.

When second is subtracting from first equation then we get

12y=-7

Then , the required result is given by

12y=-7

Answer: 12y=-7

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NEED HELP ASAPP RADICALSSS
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Applying the tangent ratio, the length of side x, in simplest radical form is: 8√3.

<h3>How to Apply the Tangent Ratio?</h3>

The tangent ratio is: tan ∅ = opposite side length / adjacent side length of the right triangle.

Given the following:

Reference angle (∅) = 30 degrees.

Opposite side length = 8

Adjacent side length = x = ?

Using the tangent ratio, we have: tan 30 = 8/x

x(tan 30) = 8

Divide both sides by tan 30

x(tan 30)/tan 30 = 8/tan 30

x = 8/tan 30

x = 8/1/√3

x = 8 × √3

x = 8√3

Therefore, applying the tangent ratio, the length of side x, in simplest radical form is: 8√3.

Learn more about the tangent ratio on:

brainly.com/question/4326804

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Which of the following expressions represents "no more than 5"?
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What is the slope-intercept equation of the line that passes through (0, 2) and (6, 6)?
Luba_88 [7]

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Step-by-step explanation:

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Find the y intercept of a line the is perpendicular to y=3x+-1 and goes through (6,-16)
Minchanka [31]
Find the y-intercept (which is b) ; Perpendicular to y = 3x - 1 (which has the negative reciprocal of the slope) ; passes through (6, -16) which will help us find b :)

Our first step is to locate the slope, which is "m" in slope intercept form.

As you can see, we are given an equation that is already in slope intercept form, so simply locate "m"

y = 3x - 1 

Slope 1 = 3 (as it is in the "m" spot)
Slope 2 = -1/3 (as it is the negative reciprocal)

Now that we have our slope, plug in the slope (-1/3) and (6, -16) into our new slope intercept equation so that we can find the value of "b" which is our y-intercept.

y = mx + b

(-16) = -1/3(6) + b

Simplify.

-16 = -2 + b

Add 2 to both sides.

-16 + 2 = b

Simplify.

-14 = b → Therefore, our y-intercept is -14 → THAT IS OUR FINAL ANSWER - however, if you'd like to know the final equation including the y-intercept, here it is :)

Now that we have all of the needed information, simply plug everything in! :)

**Remember : m = -1/3 ; b = -14

y = mx + b

y = -1/3x - 14

~hope I helped!~
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