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schepotkina [342]
3 years ago
7

How many real solutions does the equation 8x^2 − 10x + 15 = 0 have?

Mathematics
2 answers:
Leto [7]3 years ago
6 0

Answer:

It has no real solutions.

Step-by-step explanation

Once you calculate the discriminant,  D= (-10)^2 -4 (8)(15), you simplify the expression to get D= -380, which has no real solutions.

Svet_ta [14]3 years ago
4 0

Answer:

No solutions

Step-by-step explanation:

Quadratic equations are in the form of ax^2+bx+c, so a = 8, b= -10, and c = 15.

Use b^2 - 4ac to find the discriminant.

-10^2 - 4(8)(15) = <em>-580</em>

If a discriminant is < 0 then there are no real solutions to a quadratic equation. -580 < 0

Therefore, there are no real solutions

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Please help explanation if possible
posledela

Answer:

y =3x - 5

Step-by-step explanation:

Well one of the way to do this question is the formula given below your question, but for me, i rather do it this way

OK they gave u y=3x - 12

And they say another line is parallel, once u see the word parallel means they have the same angle, same slope, same gradient ( sorry if I give u the wrong terms, since I learn mine in Malay)

So first u got to understand the slope-intercept form

y = mx + c

y is your y coordinate

x is your x coordinate

m is your gradient ( as in how much the line slants)

c is the y - intercept, as in, if u draw a graph, the y-coordinate where your line touches the y-axis (the vertical line)

So since the say the both lines are parallel, so both of their "m" is the same that is 3. Why? Cuz just compare

y = mx + c

y = 3x - 12

Therefore the m is 3

Therefore u alredy got your first value, so put it in your slope intercept form

y = mx + c

y = 3x + c

Now how to find c? Very easy, just put in the value of y and x from the coordinate ( that the line youre finding is on) they gave u, just put the value in

They gave u

(1, - 2)

So when x = 1, y = - 2

Therefore put it in

y = 3x + c

-2 = 3 (1) + c

c = - 5

Since now u have your m and c value, your slope intercept form is done, just put it in

y = mx + c

y = 3x + (-5)

y = 3x -5

6 0
2 years ago
What number is one thousand more than 6,861
Lera25 [3.4K]

The answer is

7,861.


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3 years ago
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Prove theorems about triangles
Aleks04 [339]
  • Answer & step-by-step explanation:

<em>a) impossible</em>

<em>b)  the sum of the angles in a triangle is 180°</em>

<em>63° + 59° + 57° = 179°</em>

3 0
3 years ago
F(x) = 2x – 1 g(x) = 7x – 12 What is h(x) = f(x) + g(x)?
WINSTONCH [101]

Answer:

<h2><em>h</em><em>(</em><em>x</em><em>)</em><em>=</em><em>9</em><em>x</em><em>-</em><em>1</em><em>3</em></h2>

<em>Sol</em><em>ution</em><em>,</em>

<em>h(x) = f(x) + g(x) \\  \:  \:  \:  \:  \:  \:  \:  = 2x - 1 + 7x - 12 \\  \:  \:  \:  \:  \:  \:  = 2x + 7x - 1 - 12 \\  \:  \:  \:  \:  \:  \:  = 9x - 13</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em>.</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em>

4 0
3 years ago
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The number sentence is an example of which multiplication property <br> 6*7=(6*5)+(6*2)
Bas_tet [7]
Should be distributive property
4 0
3 years ago
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