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Genrish500 [490]
3 years ago
5

What is the solution set of x^2+5x-5=0

Mathematics
1 answer:
bazaltina [42]3 years ago
6 0
Use the quadratic formula for the roots:

x =  [ (-5) +/- sqrt (5^2 - 4*1*-5) ]  /   2
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16/25 as a decimal fraction in simplest form
Elodia [21]

Answer:

0.64

Step-by-step explanation:

Divide and multiply by 100.

3 0
3 years ago
Solve for the missing angle ∡&. One point for your equation and one point for the correct angle measure.
love history [14]
Hello.

1. Understand that this requires inverse trigonometry.
2. For A, we can use sin^-1 if we want (we could use cos^-1 or tan^-1 as well because all sides are given)
Definition of sin^-1 with how it is derived
sin(theta) = O/H <—> sin^-1(O/H)
Angle A: (When calculating an angle, ensure that your calculation is in degree mode instead of radian mode.) 2ND, then QUIT on TI

sin^-1(7/25) = 16.26020471°
(round as needed)

Angle &: (also in degree mode)

All angles of a triangle add to 180°.
1. 180° - (angle B + Angle A) = Angle &
2. 180° - (90° + 16.26020471°) = 73.73979529°
(round as needed)

To quickly check: 16° + 90° + 73° = 180°, as expected for a triangle

From the picture you provided,

The angle values make sense because that triangle represents a 30-60-90 degree triangle. (Also, a good trick is to know that the smallest angle of a triangle will always have the smallest side value, and the largest angle has the largest side value.)
Unless we have an equilateral triangle!

Good luck to you!



8 0
3 years ago
What is the answer to this?
aleksandrvk [35]

Answer:

7

Step-by-step explanation:

f(x)=\sqrt{x-8} +3

If f(24), x=24

\sqrt{(24)-8} +3

24-8=16

\sqrt{16}=4

4+3=7

8 0
3 years ago
Read 2 more answers
Please Help!!!! The two box-and-whisher ploys below show the score on a math exam for two classes. What 2 things do the interqua
masya89 [10]

Answer:

maybe its not the right explanation cuz it doesnt make sense to me

Step-by-step explanation:

3 0
4 years ago
a card player selects a playing card from a well-shuffled deck of standard playing cards and sees if the card is a red card or n
DIA [1.3K]

It is not binomial random variable , since the number of red cards is unknown in the deck of cards in the starting of experiment.

As given in the question,

Number of cards are unknown.

Number of red cards are unknown in the starting of experiment.

Number of times process done =10

For binomial random variable number of red cards should be known.

Therefore, it is not binomial random variable , since the number of red cards is unknown in the deck of cards in the starting of experiment.

Learn more about binomial random variable here

brainly.com/question/14282621

#SPJ4

8 0
2 years ago
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