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3 years ago

Is Jeff correct or incorrect?

Mathematics

1 answer:

bulgar [2K]3 years ago

4 0

Jeff is correct because:

2 sides of a triangle must always be longer than the other side, so:

12+8>19
19+8>12
12+19>8

Since all of them are true, Jeff is correct

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Write the equation of the line perpendicular to 2x+3y=9 that passes through (-2,5). Write your answer in slope-intercept form. S

Harman [31]

ANSWER

$y = \frac{3}{2} x + 8$

EXPLANATION

The line given to us has equation,

$2x + 3y = 9$

We need to write this equation in the slope intercept form to obtain,

$3y = - 2x + 9$

$\Rightarrow \: y = - \frac{2}{3}x + 3$

The slope of this line is

$m_1 = - \frac{2}{3}$
Let the slope of the perpendicular line be

$m_2$

Then
$m_1 \times m_2 = - 1$

$- \frac{2}{3} m_2= - 1$

This implies that,

$m_2 = - 1 \times - \frac{3}{2}$

$m_2 = \frac{3}{2}$

Let the equation of the perpendicular line be,

$y = mx + b$

We substitute the slope to get,

$y = \frac{3}{2} x + b$

Since this line passes through
$(-2,5)$
it must satisfy its equation.

This means that,

$5= \frac{3}{2} ( - 2)+ b$

$5 = - 3 + b$

$5 + 3 = b$

$b = 8$

Wherefore the slope-intercept form is

$y = \frac{3}{2} x + 8$

6 0

3 years ago

Find the area. HELP PLEASE!!! <br><br>IF ITS CORRECT I WILL GIVE YOU A BRAINLIEST.

belka [17]

Answer:

135

Step-by-step explanation:

Use formula b(h) which is 9x15 and get 135

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2 years ago

If each cube in the rectangular prism measures 1 cubic inch, what is the volume of the prism?

algol13

The answer for that is A. 40 cubic in

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3 years ago

I really need help please help me

alexira [117]

Answer:

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Step-by-step explanation:

If you imagine yourself building with that model you can see its that one

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2 years ago

Help Please!! I am not sure what to do?

Iteru [2.4K]

Answer:

10 < $\sqrt{111}$ < 11

Step-by-step explanation:

The square root of 111 is approximately 10.536.

A number smaller than this is 10.

A number larger than this is 11.

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3 years ago