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2 years ago

11

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

2 answers:

alisha [4.7K]2 years ago

5 0

$\Delta=5^2-4\cdot1\cdot7=25-28=-3$

$\Delta$ so 0 solutions.

DaniilM [7]2 years ago

4 0

Answer:

No Real roots to this Quadratic Equation

Step-by-step explanation:

Our Quadratic equation is given as

$x^2+5x+7=0$

In order to find that do we have the real roots of a quadratic equation , the Discriminant must be greater or equal to 0. The Discriminant is denoted by D and given by the formula

$D= b^2-4ac$

Where b is the coefficient of the middle term containing x, a is the coefficient of the term containing $x^{2}$ and the c is the constant term.

Hence we have

a = 1 , b = 5 and c = 7

Calculate D

$D=b^2-4ac\\D=5^2-4*1*7\\D=25-28\\D=-3$

Hence we see that the Discriminant (D) is less than 0, our answer is no real roots to this quadratic equation.

You might be interested in

Rename 5/6 and 14/15 using the least common denominator.

baherus [9]

Answer:

$\frac{25}{30}~and~\frac{28}{30}$

Multiply 5 by 5 to get your first parameter.

$5 * 5 = 25$

Multiply 6 by 5 to get the denominator, or your second parameter.

$5 * 6 = 30$

For the second fraction, $\frac{14}{15}$ , you need to multiply both parameters by 2, similar to before, but we now must use a different number, otherwise, the denominators will not be the same.

$14 * 2 = 28$

Now, multiply 15 by 2

$15 * 2 = 30$

The last step is to put these numbers you gathered into fractions. The bigger number always goes on the bottom, referred to as the denominator, while the smaller number, referred to as the numerator, always goes on the top.

$25~and~30 -- > \frac{25}{30}$

$28~and~30-- > \frac{28}{30}$

________________________________________________________

Finally, the problem is solved. Now that the problem is solved, we review what we just learned <em>not through more problems, though.</em>

________________________________________________________

<h3>What have we learned?</h3>

We learned how to efficiently make fractions' deominators match.

Questions related to this topic? Ask me in the comments box, please!

8 0

2 years ago

Which of the following is a description of the data with a correlation coefficient of 0.9?

aksik [14]

High positive correlation<span>
</span>

3 0

2 years ago

Suppose that a loan of $2500 is given at an interest rate of 19% compounded each year.

IrinaK [193]

Answer:

a)2975

b)3450

Step-by-step explanation:

4 0

2 years ago

1)The graph of the function y = 4x does not pass through the origin.

Gemiola [76]

Answer:

The correct options are:

Option B) $4^x$ is never zero.

Option F) When x=0, y≠0

Step-by-step explanation:

Consider the provided function.

$y=4^x$

When we substitute x=0 in above function we get:

$y=4^{0}$

$y=1$

When we substitute x=-1 in above function we get:

$y=4^{-1}$

$y=0.25$

When we substitute x=1 in above function we get:

$y=4^{1}$

$y=4$

The above function is exponential function which does not pass through the origin and the range of the function is a positive number.

The graph of the function is shown in figure 1.

Now consider the provided options.

Option A) $4^x$ is always greater than or equal to 1.

The option is incorrect as the value of the function is less than 1 for negative value of x.

Option B) $4^x$ is never zero

The option is correct.

Option C) When y=0, x=0

The option is incorrect.

Option D) When x=0, y=4

When x=0 the value of y is 1.

Thus, the option is incorrect.

Option E) $4^x$ is zero when x=0

When x=0 the value of $4^x$ is 1.

Thus, the option is incorrect.

Option F) When x=0, y≠0

The option is correct as 0≠1.

3 0

2 years ago

Kjdhkdjfhgksdjghkdfs

LUCKY_DIMON [66]

Answer:

40 is the answer

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers