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
OLga [1]
2 years ago
11

Solve the following factorize and the en- equation of quadrate equation X² + 5x + 7 x = 0​

Mathematics
1 answer:
nlexa [21]2 years ago
8 0

Answer:

{-12,0}

Step-by-step explanation:

first to solve this can collect like terms and add

X² +12x=0

and solve it by factorization method

X² +12x=0

x(x+12)=0

it means x multiplied by x = X² then x multiplied by 12 = 12x

so this means x or (x+12) equals to zero

x=0 and (x+12)=0

x+12=0

x=-12

so the solution set is {-12,0}

but can also be done by formula method

You might be interested in
An art history professor assigns letter grades on a test according to the following scheme. A: Top 13% of scores B: Scores below
madam [21]

Answer:

The numerical limits for a B grade are 81 and 89, that is, a score between 81 and 89 gets a B grade.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Scores on the test are normally distributed with a mean of 79.7 and a standard deviation of 8.4.

This means that \mu = 79.7, \sigma = 8.4

B: Scores below the top 13% and above the bottom 56%

So between the 56th percentile and the 100 - 13 = 87th percentile.

56th percentile:

X when Z has a p-value of 0.56, so X when Z = 0.15. Then

Z = \frac{X - \mu}{\sigma}

0.15 = \frac{X - 79.7}{8.4}

X - 79.7 = 0.15*8.4

X = 81

87th percentile:

X when Z has a p-value of 0.87, so X when Z = 1.13.

Z = \frac{X - \mu}{\sigma}

1.13 = \frac{X - 79.7}{8.4}

X - 79.7 = 1.13*8.4

X = 89

The numerical limits for a B grade are 81 and 89, that is, a score between 81 and 89 gets a B grade.

4 0
2 years ago
6 - 8x = 6x - 9x + 11
mars1129 [50]

6-8x=-3x+11

-8x+3x=11-6

-5x=5

x=-1

The first step is to isolate the variable, then you solve. Hope this helps, brainliest if you can.

6 0
3 years ago
Read 2 more answers
Which of the following functions represents a cell phone bill if there is a monthly charge of 20 dollars plus 6 cents for each m
pychu [463]

Answer:

f(x)=20+0.06x

Step-by-step explanation:

3 0
3 years ago
Which ones are the correct ones?
kirill115 [55]

Answer:

a) 5/-6, - 5/6

b) 7/-2, -7/2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Planes Q and R intersect. Lines d and c are vertical on plane R and form a right angle with line B on plane Q. Line B is horizon
Akimi4 [234]

Answer:

C. line d

Step-by-step explanation:

Two parallel lines are lines that do not meet even with continuous extension of their length. While two lines are perpendicular when they form a right angle to each other at the point where they meet.

In the given question, the only figure that would be parallel to line c is line d. Line a is not parallel to line c (since it is slightly diagonal, it would intersect line c at a point) and line B is perpendicular to line c (since it is horizontal to plane Q), same as plane Q. So that lines c and d are parallel to each other.

4 0
2 years ago
Read 2 more answers
Other questions:
  • Solve each equation and check your solution.
    7·1 answer
  • working together,2 groomers can brush 8 horses in 3 hours. How many hours would it take 3 groomers to brush 12 horses at this ra
    9·1 answer
  • PLEASEHELP ME 98 POINTS AND BRAINLIEST TO THE FIRST PERSON
    7·1 answer
  • you are ordering a meal and you have $15 to spend the the restaurant charges 6% sales tax you plan to leave a 15% tip the equati
    7·1 answer
  • workers are loading boxes onto a truck . So far, they have loaded 48 boxes onto the truck. According to their inventory, they st
    7·1 answer
  • 1. Jasmine enlarged a drawing she made in art class.
    14·1 answer
  • A bookshelf is 9 feet wide. A set of mystery books fills 1/6 of the shelf space. Each book in the set is 3/8 inch thick. How man
    10·1 answer
  • 5.
    15·1 answer
  • The diameter of a circle measures 32 ft. What is the circumference of the cirle? Use 3.14 for n, and do not round tour answer. B
    13·1 answer
  • Raise the sum of u and v to the 4th power
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!