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Andrej [43]
3 years ago
14

Solve the quadratic equation by completing the square. x2 + 6x - 5 = 0

Mathematics
2 answers:
Daniel [21]3 years ago
7 0
X= 5/8 or in decimal form it is x= 0.625
Fudgin [204]3 years ago
5 0

Answer:

C) x = -3 ± sqrt(14)

Step-by-step explanation:

You might be interested in
Find the value of the combination.<br><br> 21 C 3<br><br> 7,980<br> 2,660<br> 1,330
erik [133]
To evaluate the combination we proceed as follows:
21C3
Given nCk we shall have:
n!/[(n-k)!k!]
thus plugging the values in the expression we get:
21!/[(21-3)!3!]
=21!/(18!×3!)
=1330
Answer: 1330
4 0
4 years ago
a 4.50 g coin of copper absorbed 54 calories of heat. what was the final temperature of the copper if the initial temperature wa
I am Lyosha [343]

The final temperature of copper is 155.43°C.

Step-by-step explanation:

The formula to apply is Q=m*Δt*c where ;

Q=heat energy, m=mass, c=specific heat capacity and Δt= change in temperature

Given that Q=54 calories , m=4.50 g and c=0.092 cal/g°C

In this question find Δt then ,the final temperature.

Δt=Q/m*c

Δt=54/4.50*0.092 =130.43°C

To find final temperature, apply the formula;

Δt=Final temperature - Initial temperature

130.43°C=Final temperature-25°C

130.43°C+25°C=Final temperature

155.43°C

Learn More

Specific Heat Capacity : brainly.com/question/12431744

Keyword : specific heat capacity

#LearnwithBrainly

3 0
4 years ago
What is the value of x?
inessss [21]

Answer:

  54

Step-by-step explanation:

x is half the difference of the two arcs:

  x = (136 -28)/2 = 54

The value of x is 54.

6 0
3 years ago
All expressions equivalent to 4(2+x):
Zina [86]

Answer and Step-by-step explanation:

8 + 4x -- Distributed the 4 to the 2 and x.

2(4 + 2x)  -- Taking out the 2 from the 8 and 4x, instead of the 4.

These are the answers.

<u><em>#teamtrees #PAW (Plant And Water)</em></u>

4 0
3 years ago
Which expression is equal to 6(−3m)4​
vlabodo [156]

Answer: -18m x 4 (I think)

Step-by-step explanation:

If this isn’t correct, what you have to do is simplify, hopefully this helps

7 0
3 years ago
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