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Salsk061 [2.6K]
3 years ago
15

What is 2x squared - 9x - 5?

Mathematics
1 answer:
Alex3 years ago
5 0
Uhh uhhhhhhhhhhh i dont know
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Which equation represents the line that passes through the points (-3, 7) and (9,-1)? oy--3x+5 o y=-x-7 o y=zx-7 oy - 12 2x+5​
olchik [2.2K]

Answer:

The answer is

<h2>y =  -  \frac{2}{3} x + 5</h2>

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

To find the equation we must first find the slope of the line.

So the slope of the line using points (-3, 7) and (9,-1) is

<h3>m =  \frac{ - 1 - 7}{9 + 3}  =  -  \frac{8}{12}  =  -  \frac{2}{3}</h3>

Now we use the formula

<h3>y - y1 = m(x - x1)</h3>

where

m is the slope

( x1 , y1) is any of the points given

So the equation of the line using point

( - 3 , 7) and slope - 2/3 is

<h3>y - 7 =  -  \frac{2}{3} (x + 3) \\ y - 7 =  -  \frac{2}{3} x - 2 \\ y =  -  \frac{2}{3} x - 2 + 7</h3>

We have the final answer as

<h3>y =  -  \frac{2}{3} x + 5</h3>

Hope this helps you

5 0
2 years ago
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What value would you put for
djyliett [7]

Answer:

B

Step-by-step explanation: apex

3 0
2 years ago
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Find the equation of the line. Use exact numbers <br><br> Y= __ x+ __
nika2105 [10]

Answer:

y = 3/4x -2

Step-by-step explanation:

slope = rise/run = 3/4

y intercept is where the line crosses the y axis, it crosses at -2

5 0
2 years ago
Find the percent of the total area under the standard normal curve between the given z-scores. z= -1.10 and z= -0.36
siniylev [52]
0987\sqrt{x}   \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right]   \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right]
3 0
3 years ago
The volume of a right circular cone is 1,780.38 in3. If the height of the cone is 21 in, what is the diameter of the cone? (Use
iragen [17]

Answer:

18

Step-by-step explanation:

volume of cone=πr²*h/3  

21/3=7, 3.14*7=21.98,1780.38/21.98=81,square root of 81=9,9+9+18

3 0
3 years ago
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