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Rus_ich [418]
3 years ago
9

Which are the solutions of x^2=-7-8?

Mathematics
2 answers:
maxonik [38]3 years ago
5 0

Answer:

No Real Solutions

Step-by-step explanation:

Move the constants to the left now your equations is x^{2}-7+8=0

Now you calculate -7+8=0 now your equation is x^{2}+1=0

Calculate the discriminant: Determine the number of solutions using the discriminant D=b^{2}-4ac

D=0^{2}-4 x 1 x 1

Simply the expression

D= -4

Since D<0, the quadratic equation has no real solutions

Serhud [2]3 years ago
3 0

Answer:

I don't think there are any solutions... (No solution)

Step-by-step explanation:

x^{2}=-7-8

Simplify

x^{2}=-15

To isolate x square both sides:

\sqrt{x}=\sqrt{-15

-15 cannot be squared since it is negative. Therefore, there is no solution.

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A college has over 5,000 students, 10, percent of which are left-handed. A new lecture hall is being planned that will seat 300
Rama09 [41]

Answer:

Mean: 30 students

Standard deviation: 5.2 students

Step-by-step explanation:

Khan

4 0
2 years ago
What is the slope of the line that passes through (8,4) and (6,7)?
bija089 [108]
slope=\frac{y_2-y_1}{x_2-x_1}\\\\ &#10;(x_1,y_1)=(8,4)\\ &#10;(x_2,y_2)=(6,7)\\\\&#10; slope=\frac{7-4}{6-8}=\frac{3}{-2}=-\frac{3}{2}\\\\&#10;Slope\ is\ equal\ to\ -\frac{3}{2}.&#10;
4 0
3 years ago
MARKING BRAINLIESTTT!!! PLUS 30PTS EARNED!! HELP ASAPP PLZZZ!!!!
Elza [17]

Answer:

  1.  9 < s < 17

  2.  5 < MN < 19

  3.  AD > BD

Step-by-step explanation:

1. The triangle inequality tells you the sum of any two sides of a triangle must exceed the length of the other side. (Some versions say, "must be not less than ..." rather than "must exceed.") In practice, this means two things:

  • the sum of the shortest two sides is greater than the length of the longest side
  • the length of any side lies between the sum and the difference of the other two sides

Here, we can use the latter fact to write the desired inequality. The difference of the given sides is 13 -4 = 9; their sum is 13 +4 = 17. The third side must lie between 9 and 17. If that side length is designated "s", then ...

  9 < s < 17

(If you don't mind a "triangle" that looks like a line segment, you can use ≤ instead of <.)

__

2. Same as (1) using different numbers.

  12 -7 < MN < 12 +7

  5 < MN < 19

__

3. Side CD is congruent to itself, and side CA is shown congruent to side CB. This means the requirements of the Hinge Theorem are met. That theorem tells you the longer side is opposite the greater angle:

  AD > BD

7 0
3 years ago
Find the equation of the line that goes through the points (3,8) and (9,16).
Aneli [31]

Answer:

4x-3y+12=0 is required eqn

Step-by-step explanation:

Let, 3,8 be x1,y1

9,16 be x2,y2

Now,

Eqn of st.line is y-y1 = y2-y2/x2-x1 * (x-x1)

y-8 = 16-8/9-3 * (x-3)

y-8 = 4/3*(x-3)

3y-24 = 4x-12

4x-3y+12=0 is required eqn

3 0
3 years ago
What is 6,400,000 written in scientific notation?
Arlecino [84]

Answer:

B

Step-by-step explanation:

6.4 × 1000000 is 6,400,000

10⁶ = 1000000

8 0
3 years ago
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