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
Setler [38]
1 year ago
7

Which are the solutions of x2 = −7x – 8?​

Mathematics
2 answers:
Zarrin [17]1 year ago
3 0

X could be -1.4835 or -5.5615.

Please mark as brainliest....

Nana76 [90]1 year ago
3 0

Step-by-step explanation:

2x=<em>-7x-8</em>

<em>soln</em>

<em>-7x-2x=</em><em>-</em><em>8</em>

<em>-9x=</em><em>-</em><em>8</em>

<em>9</em><em>x</em><em>=</em><em>8</em>

<em>X=</em><em>8</em><em>÷</em><em>9</em>

<em>.</em><em>:</em><em>X=</em><em> </em><em>1</em><em> </em><em>prov</em><em>e</em><em>d;</em>

You might be interested in
Angles X and Y are congruent. Imported Asset and Imported Asset . Find the degree measure of angle X.
Sphinxa [80]
You can use a diffrent kind of ruler for math then you could find the answer.
8 0
2 years ago
Anyone know the answer ?
Klio2033 [76]

The order is:    -√5, √6, 2.43, 50/20

Please award brainliest  :)

8 0
3 years ago
Read 2 more answers
The half-life of caffeine in a healthy adult is 4.8 hours. Jeremiah drinks 18 ounces of caffeinated
statuscvo [17]

We want to see how long will take a healthy adult to reduce the caffeine in his body to a 60%. We will find that the answer is 3.55 hours.

We know that the half-life of caffeine is 4.8 hours, this means that for a given initial quantity of coffee A, after 4.8 hours that quantity reduces to A/2.

So we can define the proportion of coffee that Jeremiah has in his body as:

P(t) = 1*e^{k*t}

Such that:

P(4.8 h) = 0.5 = 1*e^{k*4.8}

Then, if we apply the natural logarithm we get:

Ln(0.5) = Ln(e^{k*4.8})

Ln(0.5) = k*4.8

Ln(0.5)/4.8 = k = -0.144

Then the equation is:

P(t) = 1*e^{-0.144*t}

Now we want to find the time such that the caffeine in his body is the 60% of what he drank that morning, then we must solve:

P(t) = 0.6 =  1*e^{-0.144*t}

Again, we use the natural logarithm:

Ln(0.6) = Ln(e^{-0.144*t})

Ln(0.6) = -0.144*t

Ln(0.6)/-0.144 = t = 3.55

So after 3.55 hours only the 60% of the coffee that he drank that morning will still be in his body.

If you want to learn more, you can read:

brainly.com/question/19599469

7 0
2 years ago
Standard form four hundred and five hundredths
galben [10]
400.05 is the answer.
8 0
3 years ago
Read 2 more answers
Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Aneli [31]

Answer:

5 times as many should be your answer.

4 0
2 years ago
Read 2 more answers
Other questions:
  • Solve this a interval notation. 5 greater than or equal to |4-2x|
    7·1 answer
  • A cylinder with a height of 4 inches (in.) and a radius of 2 inches is shown. What is the volume of the cylinder, in ? (Use 3.14
    15·1 answer
  • PLEASE HELP ME ANSWER THIS<br> What is cos 60?
    12·2 answers
  • 11 + (3)(9) Step 1: 11 + (9)(3) Step 2: (11 + 9)(3) Step 3: 20(3) Step 4: 60 Analyze the work to find the error.
    8·2 answers
  • Traveling from Atlanta, Georgia to Orlando, Florida is about 550 miles. Jen traveled 338 miles yesterday and the rest today. Whi
    5·1 answer
  • The area of a square photo frame is 100 cm^2 find the length of the photo frame
    15·2 answers
  • Please help me with my math
    11·2 answers
  • Mr. Tolin purchased a used car for $2,816, which was 12% off the asking price. What was the asking price of the used car?
    9·1 answer
  • Help pls . Thank you very much
    12·2 answers
  • The square below represents a unit or a whole. What fraction is represented by the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!