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
disa [49]
3 years ago
6

Without solving it, determine the nature of the roots of this equation:

Mathematics
1 answer:
ycow [4]3 years ago
6 0
<h2>Answer:</h2>

x = 1, -4

Step-by-step explanation:

Find the roots of  x:

2  +  3

x  −  4  =  0  by solving for  x

.

You might be interested in
18 - 2x = y
DerKrebs [107]

B. Y equals 0, because if you plug it in ( multiply 2 by 9 ) you will get 18-18 which equals 0.
6 0
3 years ago
How many gallons of a 80% antifreeze solution must be mixed with 80 gallons of 15% antifreeze to get a mixture that is 70% antif
konstantin123 [22]

440 gallons of 80 % antifreeze solution must be mixed with 80 gallons of 15% antifreeze to get a mixture that is 70% antifreeze

<em><u>Solution:</u></em>

Let "x" be the gallons of 80 % antifreeze added

Therefore, "x" gallons of 80 % antifreeze solution must be mixed with 80 gallons of 15% antifreeze

Final mixture is x + 80

Therefore, we can frame a equation as:

"x" gallons of 80 % antifreeze solution must be mixed with 80 gallons of 15% antifreeze to get (x + 80) gallons of 70 % antifreeze

Thus, we get,

x gallons of 80 % + 80 gallons of 15 % = (x + 80) gallons of 70 %

x \times \frac{80}{100} + 80 \times \frac{15}{100} = (x+80) \times \frac{70}{100}\\\\0.8x + 80 \times 0.15 = (x+80) \times 0.7\\\\0.8x+12 = 0.7x+56\\\\0.8x-0.7x=56-12\\\\0.1x = 44\\\\x = \frac{44}{0.1}\\\\x = 440

Thus 440 gallons of 80 % antifreeze solution must be mixed

4 0
3 years ago
The mean length of 7 childrens' index finger is 9.4cm. The mean length of 5 adults' index finger is 10.2cm. What is the mean len
Deffense [45]

Answer:

9.73  cm to 2 DP

Step-by-step explanation:

Total of the  lengths involved = 7*9.4 +  5*10.2

= 116.8 cm

So the mean of the 12 fingers

= 116.8/12

= 9.73  cm to 2 DP.

3 0
2 years ago
Read 2 more answers
Two students are reading a novel. Ashley reads 10 pages per day. Carly reads 8 pages per day, but she starts early and is alread
BARSIC [14]

Answer:

The word per indicates the slope (m) of a linear function, y=mx +b.Using d for x and p for y , the equation representing Ashely's reading is p = 10d. Carly begins on page  40 which represents b, the y intercept of a linear function which indicates an initial amount.  So the equation representing Carly's reading is p=8d + 40.

3 0
3 years ago
Read 2 more answers
Which of the following numbers is a multiple of 8? A.98 B.124 C.512 D.27
Y_Kistochka [10]
C is your answer buddy brainliest please
7 0
3 years ago
Other questions:
  • What is the mode of the following set of data?
    13·1 answer
  • Which expression is equivalent to this one?
    15·2 answers
  • A sprinter can run 120 meters in 10 seconds. what is his average speed
    14·2 answers
  • Celia bought a bag of 12 goldfish for $3,<br> What is the cost of 1 goldfish?
    13·1 answer
  • what is the decimal equivalent of the fraction? 7/12 enter your answer to the nearest thousandths in the box
    12·2 answers
  • There are 25 desks in Mr. Miller’s class. There are 36 desks in Mrs. Fernandez’s class. The desks in each classroom are arranged
    15·1 answer
  • What is the y-intercept of the equation y = 3x - 4?​
    8·1 answer
  • What is the slope of the function?<br> 08<br> 04<br> O 2<br> O 5
    12·2 answers
  • You have the option of buying 20 tickets at the fair for 15$ or 45 for 27$ which is te best deal
    8·2 answers
  • Help me please!!!!!!!!!!!!!!!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!