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
Eva8 [605]
3 years ago
13

Please help me thank you so much

Mathematics
1 answer:
avanturin [10]3 years ago
3 0
The answer is C.

Explanation:

(First, make sure the to finish solving the quadratic equation)
x^2 + 2x - 16 = 12x
x^2 - 10x - 16 = 0

(a, b and c are the coefficients of x^2, x and the constant respectively)
a = 1, b = -10, c = -16

(We can substitute this into the quadratic equation. +- means + or -)
x = [- b +- sqrt(b^2 - 4ac)]/2a
= [- (-10) +- sqrt(100 + 64)]/2
= [10 +- sqrt(164)]/2

(So C is the answer)
You might be interested in
Suppose it takes John 18 minutes to run 3 miles. How long would it take him to run 7 kilometers? round to the nearest minute
alex41 [277]

Answer: 26 Minutes

Step-by-step explanation:

3 mi * 1.609 km/1 mi = 4.82 km

4.82 km/ 18 minutes = 7 km/ x minutes

4.82x=18*7

x=126/4.82

x=26.14 ~ 26 Minutes

8 0
3 years ago
Jessica wants to calculate her grade in her accounting class.she has four test grades (82, 65, 71, and 77) and a homework grade
Aleks04 [339]

To solve the problem, get the percentage of each test by multiplying the score and the percentage then add it all up:


82 * .25 (highest test grade) + 65* .15 (lowest test grade) + 71*.20 (each test remaining) + 77*.20 (each test remaining) + 92*.20 (homework grade)


= 20.5 + 9.75 + 14.2 + 15.4 + 18.4 = 78.25 or 78% in whole number

3 0
3 years ago
Help asap please !! Thank you soooo much t who ever helps.
PSYCHO15rus [73]

A) 2 2/9

The answer would of course be positive because two negatives make a positive.

It would only be 6 4/9 if you added when here it states the obvious for you to subtract.

Hope this helped PLEASE MARK BRAINLIEST!!

6 0
3 years ago
X varies directly with y. If x is 16 when y is 20, find x when y is 80.
Taya2010 [7]

Answer:

32

Step-by-step explanation:

16/20 reduces down to 2/5

set 2/5=x/80

cross multiply 160=5x

divide 32=x

check 2/5=32/80

32/80; 16/40; 8/20; 4/10; 2/5

yay 32 is the answer good luck :)

5 0
3 years ago
Which of the following functions is graphed below
AlexFokin [52]

Answer:

B

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • 9x – 5 < –41 or 3x + 13 > 7
    7·2 answers
  • 2x+9y=27<br> x-3y=-24 substitute
    12·1 answer
  • Triangle Q M N is shown. The length of Q M is 18, the length of M N is 17, and the length of Q N is 20. Law of cosines: a2 = b2
    15·1 answer
  • Dylan works out and burns 10 calories per minute swimming and 7 calories per minute biking. He wants to burn a minimum of 600 ca
    13·1 answer
  • Bill rides a bus for 2.5 hours to visit a friend. If the pus travels at about 60 to 63 miles per hour, how far does bills friend
    13·1 answer
  • 1.25, 1.5, 1, 1.25, 2, 0.75, 2.5, 1.75, 2.5, 1 What is the mean?
    12·1 answer
  • Which of the lines below is a line of symmetry?
    5·2 answers
  • The population of leave town is 1-23,560 and is decreasing at a rate of 1.5%
    15·2 answers
  • What percent of<br> 950 is 36?
    12·2 answers
  • What is the mean? Ill give brainliest
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!