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3 years ago

Please help me please love you bestie

Mathematics

1 answer:

tankabanditka [31]3 years ago

8 0

Answer:

you'll look back on this and say how easy this is you got it. but for today the bottom one is (3,0) the middle one is (2,3) and the top one is (4,4)

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find the point-slope equation of the line perpendicular to the line y=2x+5 passing through the point (1,4). (please include solu

pishuonlain [190]

First off, let's keep in mind that perpendicular lines have negative reciprocal slopes, hmmm so what's the slope of y = 2x + 5?

well, notice, that equation is in slope-intercept form, thus $\bf y=\stackrel{slope}{2}x+5$ .

$\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}}
{2\implies \stackrel{slope}{\cfrac{2}{1}}\qquad \qquad \qquad \stackrel{reciprocal}{\cfrac{1}{2}}\qquad \stackrel{negative~reciprocal}{-\cfrac{1}{2}}}$

so, we're really looking for the equation of a line whose slope is -1/2 and runs through 1,4.

$\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{4})\qquad \qquad \qquad 
slope = m\implies -\cfrac{1}{2}
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-4=-\cfrac{1}{2}(x-1)$

7 0

3 years ago

Simplify: 7ax3+5x2a-9a÷3<br>

posledela

1)Calculate the product:
21a + 10a - 3a
2)Collect like terms:
28a
Answer:
28a

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3 years ago

A salt mixture has 8 parts water and 2 parts salt. Suppose one part of each is added. What is the new ratio of salt

Ivanshal [37]

Answer:

3 to 9

Step-by-step explanation:

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3 years ago

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STALIN [3.7K]

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2 years ago

Find the value of X in the triangle shown below

coldgirl [10]

Answer:

x = sqrt(32)

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2+ b^2 = c^2

7^2 + x^2 = 9^2

49+x^2 = 81

Subtract 49 from each side

x^2 = 81-49

x^2 =32

Take the square root of each side

sqrt(x^2) = sqrt(32)

x = sqrt(32)

3 0

3 years ago

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