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
andrey2020 [161]
1 year ago
7

Can I find a tutor to help me bro ?

Mathematics
1 answer:
nignag [31]1 year ago
3 0

Solution

Given the quadratic equation:

x² + 2x + 7 = 21

x² + 2x + 7 - 21 = 0

x² + 2x - 14 = 0

a = 1, b = 2, c = - 14

(1) The number of solutions of a given quadratic equation is determine by the discriminant.

From the given values;

(2)² - 4(1 x -14) = 4 + 56 = 60

60 > 0 ( 2 solutions)

1 positive solution and 1 negative solution

Thus, number of positive solutions to this equation is one

(2) The greatest solution or positive solution to the equation is calculated as;

You might be interested in
PLZ HELP ME <br> I appreciate any help, especially if you can show me how you got the answer
Arte-miy333 [17]

Answer:

C

Step-by-step explanation:

Since this is an indererminate form, use L'Hopital

d(sint)/dt = cos(t)

d[ln(2e^t) - 1] = (2e^t)/[2e^t - 1]

As t --> 0,

cos(0) = 1

(2e^t)/[2e^t - 1] = 2

1/2 is the limit

5 0
3 years ago
In using the multiple regression method, we can model the effects of the different levels of a qualitative independent variable
attashe74 [19]

For the levels of qualitative, the variable called dummy variables is used in the multiple regression method.

According to the statement

we have given that the by which method we use the different levels of a qualitative independent variable and we have to explain about it.

So, For his purpose, we know that the

A dummy variable is a variable that takes values of 0 and 1, where the values indicate the presence or absence of something.

And in the multiple regression method there are a lot of different variables which are used for a qualitative and for this a variable is used which is called the dummy variables.

By this variables we show the analysis between the given data. it gives the output in the 0 and 1 numbers.

So, For the levels of qualitative, the variable called dummy variables is used in the multiple regression method.

Learn more about the Dummy variables here

brainly.com/question/17177646

#SPJ4

3 0
1 year ago
If you make $8 an hour and you get a 10% raise how much are you making now
alexira [117]

Answer:

$8.8

Step-by-step explanation:

8*0.10=0.8

8+0.8=8.8

5 0
3 years ago
I need e-learning help ugh ... ASAP
miskamm [114]

Answer:

600 m

Step-by-step explanation:

You know that she walks 1 meter in 1 second, but they're asking about minutes. Since 60 seconds are in 1 minute, it means she was 60 meters in 1 minute. Then multiply that by 10 (10 minutes).

She walked 600 meters, in 10 minutes.

I hope this helped!

5 0
3 years ago
An elephant has a mass of 6.8 × 10 3 kg.
telo118 [61]
A). because B,C, and D didnt really make any sence


3 0
3 years ago
Other questions:
  • Tyler is self-employed sheet metal worker. He purchased 25 sheets of aluminum that measures 4 feet by 8 feet. The cost is $4000.
    13·1 answer
  • To the nearest hundred,what is the greatest whole number that rounds to the 2,500?the least whole number
    6·1 answer
  • Which show the answer in expanded form
    5·1 answer
  • 2(x-5)+8=4<br><br>what does x equal?​
    11·1 answer
  • Why did the donkey get q passport​
    8·1 answer
  • Critical Thinking Explain how the formulas for the perimeter and area of a square may be derived from the corresponding formulas
    5·1 answer
  • Determine whether the ratios 2/5 and 7/12 proportional yes or no ?
    11·1 answer
  • PLS ANSWER ITS DUE IN 5 MINUTES
    10·2 answers
  • What value represents the number 1 in the number 4,105.8
    12·2 answers
  • Hi everyone i need help on a problem in math
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!