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Serjik [45]
3 years ago
14

Find the number of real number solutions for the equation x^2-3+8=0

Mathematics
1 answer:
svlad2 [7]3 years ago
5 0
Find value of determinant.
The determinant is a term that is inside a square root and part of the quadratic formula used for solving quadratic equations.
Let determinant be 'd'.
If d >0, Then there are 2 real solutions
If d = 0, Then there is only 1 real solutions
If d < 0, Then there are 0 real solutions but 2 imaginary solutions

d = b^2 - 4ac

For this problem, the coefficients are:
a = 1, b = -3, c = 8

d = (-3)^2 - 4(1)(8)

d = 9 -32 = -23

d is less than 0, therefore there are 0 real solutions and 2 imaginary solutions.

This is true because you cannot take square root of a negative number.



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The graph of y= √x is transformed as shown in the graph below. Which equation represents the transformed function?​
Arlecino [84]

Answer:

1

Step-by-step explanation:

Firstly note that the graph is shifted up 2 units, as it starts at positive 2, when it should start at 0.

That only leaves choices 1 and 2

However, since we know its flipped, we can easily rule out number 2, as number 2 wouldn't be a real number(sqrt of negatives)

That leaves answer choice 1

5 0
3 years ago
Read 2 more answers
Lines m and n are parallel lines cut by a transversal l.
Igoryamba

Answer:

Angles 1 and 3 are congruent as vertical angles; angles 3 and 7 are congruent as corresponding angles.

Step-by-step explanation:

<1 and <3 are vertical angles  because they are formed by the same lines and are opposite each other .  3 and 7 are corresponding angles because they are in the same position at each intersection where a straight line crosses two others.  Since the lines are parallel, they are equal  That makes 1 and 7 equal

5 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through (0, 3) and (7, 0)?
r-ruslan [8.4K]
The answer should be (C):y=(-3/7)x+3 because:

 if you use the slope formula: (Y2-Y1)/(X2-X1) it would look like this:

(0-3)/(7-0) and the slope of the line would be -3/7

then using the slope you just found, plug it into the y=mx+b equation along with one set of coordinates to find b (the y-intercept):

y=mx+b
0=(-3/7)(7)+b
b=3

SO, overall if you put the slope (m) and the y-intercept (b) that you found together, you get the line formula of y=(-3/7)+3 

5 0
3 years ago
The weight of a tree is doubling every 3 years and how many years will be way of the tree be 1600% of its weight now
BARSIC [14]
Doubling every 3 years, meaning 200% every 3 years.

1600 \div 200 = 8
8 \times 3 = 24
The answer is 24 years.

Hope this helps. - M
6 0
3 years ago
H0w to subtract 3/5 - 2/9 =
pochemuha
So here first you have to have same denominators to subtract and add.
to make same denominator you have to multiply something to them which meets up to their lowest common multiple (LCM). so here the easiest thing is multiply each denominator to the other but remember you have to multiply them to the numerator too.
3×9/5×9-2×5/9×5
so it becomes
27/45-10/45
17/45
as you cant bring to its simplest form since the answer in a prime no. leave it like that.
7 0
3 years ago
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