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Paladinen [302]
3 years ago
11

How to solve x^2-4x-5=0 by using the quadratic formula?

Mathematics
1 answer:
padilas [110]3 years ago
3 0

Answer:

x = 5 or -1, put numbers into the formula and calculate

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Solve each compound inequality. Graph your solutions.<br> 5 + m &gt; 4 or 7m&lt; -35
Yuliya22 [10]

Answer:

Solving the inequality 5 + m > 4\: or\: 7m< -35 we get \mathbf{m>-1\:or\: \:m

The graph of the inequality is shown in figure attached.

Step-by-step explanation:

We need to Solve each compound inequality 5 + m > 4\: or\: 7m< -35

Solving the inequalities

For solving compound inequalities we solve both inequalities simultaneously and find the value of m.

For solving 5+m > 4, we subtract 5 from both sides.

While solving 7m < -35, we divide both sides by 7 to get value of m

Applying these functions we get:

5 + m > 4\: or\: 7m< -35\\m>4-5\:or\:m-1\:or\:m

So, solving the inequality 5 + m > 4\: or\: 7m< -35 we get \mathbf{m>-1\:or\: \:m

The graph of the inequality is shown in figure attached.

5 0
3 years ago
Numbers whose decimals do not end and do not repeat are
eduard

Answer:

It's an irrational number

Step-by-step explanation:

Examples:

√2 = 1.4142135623730950488016887242096980785696718...

π = 3.14159265358979323846264338327950288419716939...

e =  2.718281828459045235360287...

∛10 = 2.1544346900318837217592935665193504952593449421921...

and more

If the number has a finite or repeating decimal, then it is a rational number.

Examples:

2.75

-1.3333...

0.4545454545...

6 0
3 years ago
Read 2 more answers
Someone help please!<br><br><br><br>X+3y=-7 5x+6y=-8​
White raven [17]

Step-by-step explanation:

I have used substitution method here to find the value of x and y.

8 0
3 years ago
How can you solve a rational equation without graphing?
KiRa [710]

Answer:

To figure out the common denominator for these fractions, I'll first need to factor that quadratic in the denominator on the right-hand side of the rational equation. This will also allow me to find the disallowed values for this equation. Factoring gives me:

x2 – 6x + 8 = (x – 4)(x – 2)

The factors of the quadratic on the right-hand side "just so happen" to be duplicates of the other denominators. This often happens in these exercises. (So often, in fact, that if you get completely different factors, you should probably go back and check your work.)

Step-by-step explanation:

4 0
3 years ago
The regular pentagon below is a scale drawing of an original pentagon that was made by using a scale factor of One-fourth. A hex
Lana71 [14]

Answer:

-The scale drawing represents a reduction

-each side of the original is 22 in long

-the scale drawing is proportional to the original

Step-by-step explanation:

8 0
3 years ago
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