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SSSSS [86.1K]
3 years ago
13

Solve the equation for all values of x by completing the square. Irrational x^2+15=-10x

Mathematics
1 answer:
attashe74 [19]3 years ago
7 0

Answer:

x=-1.8, x=-8.2

Step-by-step explanation:

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Please help! [99points]
Leto [7]
Hi!

The answer is B. Linear function.

A linear function is when the change in <em>y </em>and <em>x</em><em> </em>is constant. For example, let's make some <em>x</em> and <em>y</em> values. 

x 1, 2, 3, 4, 5
y 2, 4, 6, 8, 10

When <em>x</em> increases by 1, <em>y</em> increases by 2. The change in <em>x</em> and <em>y </em>is constant, therefore, that is a linear function. 

x 6, 9, 13, 26
y 3, 5, 10, 11

There is no pattern in those numbers, therefore this is not a linear function.

Hope this helps! :)
-Peredhel
5 0
4 years ago
Read 2 more answers
Someone please help me
vampirchik [111]

Answer:

C. 4/3x - 5

Step-by-step explanation:

First, to eliminate unnecessary answers, we can find out how to make sure the line will be perpendicular to -3/4. You will know if two lines are perpendicular if the slopes are COMPLETELY opposite. For example, 4/3 is COMPLETELY opposite from -3/4.

-3/4......4/3

So, now we know we eliminated two answers. We are left with A and C.

Then, I opened an online graphing calculator and found out which one of these lines pass through (12,9). Attached is a picture proving that answer C's line crosses through this point. Please mark me Brainliest; I need it to move on in my account! =D

7 0
3 years ago
HELP PLZ I NEED IT
vladimir2022 [97]

Answer:

false

Step-by-step explanation:

18 is not = to 21

3 0
3 years ago
One-third of a number, decreased by six equals eight. what is the number
pentagon [3]
Let the number be y.

One third of y = (1/3)*y = y/3

This is decreased by 6;         y/3  - 6

And it equals 8

That means:

y/3 - 6 = 8

y/3 = 8 + 6

y/3 = 14

y = 3*14

y = 42

The number is 42.

I hope this helps.
8 0
3 years ago
Math graph equation. <br> (Picture.)
vladimir1956 [14]

Answer:

y = -2x + 3 is the required equation

Step-by-step explanation:

From the graph we will get two ordered pairs

If we see that When x=0 then y=3  and when x = 1 then  y=1

Now from this we can find the slope of the Graph

So slope of graph = (y2 - y1) / (x2-x1)

                               =(1-3) / (1-0)

                                =-2

So

Slope = m = -2

Now the equation is

y = mx + b

We have to find the value of b

as we have two ordered pairs we can take any of it to find the value of b because line passes through those points

taking (0,3) as a point

y= mx + b

put values

3 = -2*(0) + b

so

b=3


Now the equation of the line in this form is

y = mx + b

which is

y = -2x + 3

5 0
3 years ago
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