1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pani-rosa [81]
3 years ago
9

Solve each equation by graphing the related function. If th equation has no real number solution, write no solution. X^2 + 7 = 0

Mathematics
2 answers:
Brrunno [24]3 years ago
6 0
Answer:
The equation x² + 7 = 0 has no solution

Explanation:
1- using graph:
To solve the equation means graphically means to find the x-intercepts.
The attached image shows the graph of the given function.
We can note that there are no x-intercepts. This means that the given function has no real solutions

2- using algebra:
To solve the equation algebraically means to find the values of x that would make the equation equal to zero.
Solving the given equation, we would find that:
x² + 7 = 0
x² = -7
x = <span>± </span>√-7
The square root of a negative number will always give imaginary values. This means that the equation has no real solutions

Hope this helps :)

CaHeK987 [17]3 years ago
4 0
The answer is D. It has no solution
You might be interested in
Please solve this question
n200080 [17]

Answer:

the answer is b

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Josh is hiking Glacier National Park. He has now hiked a total of 17 \text{ km}17 km17, start text, space, k, m, end text and is
EastWind [94]

Answer:

The equation to determine the total length in kilometers is  \frac{h}{2} =(17+2)

The total length in kilometers of Josh’s hike is  38 km.

Step-by-step explanation:

Given:

Let the total length in kilometers of Josh’s hike be h.

Now Given that He has now hiked a total of 17 km and is 2 km short of being 1/2 of the way done with his hike.

It means that to reach half of the length of total length Josh needs 2 more km to add in his hiking which is done which is of 17 km.

Framing the above sentence in equation form we get;

\frac{h}{2}=(17+2)

Hence, The equation to determine the total length in kilometers is  \frac{h}{2} =(17+2)

Now Solving the above equation we get;

First we will multiply 2 on both side using Multiplication property we get;

2\times \frac{h}{2}= 2\times(17+2)\\\\h =2\times 19 =38 \ km

Hence,  The total length in kilometers of Josh’s hike is  38 km.

4 0
2 years ago
Read 2 more answers
Test worth 70 points test score of 90%
diamong [38]
To calculate how many points this person got, take 90% of the total:

0.9(70) = 63

A test score of 90% is 63 points out of 70.
3 0
3 years ago
Read 2 more answers
1) Use power series to find the series solution to the differential equation y'+2y = 0 PLEASE SHOW ALL YOUR WORK, OR RISK LOSING
iogann1982 [59]

If

y=\displaystyle\sum_{n=0}^\infty a_nx^n

then

y'=\displaystyle\sum_{n=1}^\infty na_nx^{n-1}=\sum_{n=0}^\infty(n+1)a_{n+1}x^n

The ODE in terms of these series is

\displaystyle\sum_{n=0}^\infty(n+1)a_{n+1}x^n+2\sum_{n=0}^\infty a_nx^n=0

\displaystyle\sum_{n=0}^\infty\bigg(a_{n+1}+2a_n\bigg)x^n=0

\implies\begin{cases}a_0=y(0)\\(n+1)a_{n+1}=-2a_n&\text{for }n\ge0\end{cases}

We can solve the recurrence exactly by substitution:

a_{n+1}=-\dfrac2{n+1}a_n=\dfrac{2^2}{(n+1)n}a_{n-1}=-\dfrac{2^3}{(n+1)n(n-1)}a_{n-2}=\cdots=\dfrac{(-2)^{n+1}}{(n+1)!}a_0

\implies a_n=\dfrac{(-2)^n}{n!}a_0

So the ODE has solution

y(x)=\displaystyle a_0\sum_{n=0}^\infty\frac{(-2x)^n}{n!}

which you may recognize as the power series of the exponential function. Then

\boxed{y(x)=a_0e^{-2x}}

7 0
3 years ago
How do you write an expression for Z cubed?
melomori [17]

Answer:

z^3

Step-by-step explanation:

Z cubed is Z X Z X Z = Z^3

8 0
3 years ago
Other questions:
  • Number 4, 5, 6, 7 please and thank you so much
    13·1 answer
  • Find the value of x,y and z
    11·1 answer
  • If sin Z = 3, express the complex number Z in
    13·1 answer
  • Combine like terms: −22a−7a−10
    12·1 answer
  • Which of the following are solutions to the equation below 4x2-20x+25=10
    7·2 answers
  • A jar has marbles in it. Three tenths of the marbles are red. Five tenths of the marbles are blue. Two tenths of the marbles are
    10·2 answers
  • Help with math, type letter​
    12·2 answers
  • Determine the intercepts of the line. <br> Y-3=5(x-2)
    14·2 answers
  • Answer if u actually know it only!!
    11·2 answers
  • Helpp!!!<br> prove that:<br> cosecA-cotA= tanA/2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!