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
Maslowich
3 years ago
13

21) Solve x2 - 13x - 30 = 0 by factoring.

Mathematics
2 answers:
stepan [7]3 years ago
7 0

Answer:

x=15 or x=-2

Step-by-step explanation:

x^2-13x-30=0

First find the multiples of 30 that will also equal to 13.

6*5=30 ,15*2=30 and 10*3=30

  1. x^2-15x+2x-30=0
  2. x(x-15)+2(x-15)=0
  3. (x-15)(x-2)=0
  4. x-15=0 or x+2=0
  5. x=15 or x=-2
stellarik [79]3 years ago
3 0

Answer:

x= 15, -2!!!!!!!!!!!!!!

You might be interested in
PLZ HELP I NEED THE RIGHT ANSWER ASAP!!!!!!!!
const2013 [10]

Answer:

B. 66

Step-by-step explanation:

\frac{1}{x}(2x + 192)       Substitute x = 3

\frac{1}{3} (2 *3+192)    Multiply in the parentheses

\frac{1}{3}(6 + 192)          Add

\frac{1}{3}(198)                Multiply

66

3 0
3 years ago
A<br> 68°<br> B<br> 32°<br> D<br> 77<br> 11x - 33<br> [?] с<br> Help Resour<br> Skip
kari74 [83]

Quadrilaterals are shapes with 4 sides. The correct inequality expression is x < 11

<h3>What are quadrilaterals?</h3>

Quadrilaterals are shapes with 4 sides. The given figure is a quadrilateral. The side opposite to 68 degrees is greater than the side opposite 32 degrees to have the equation;

11x - 33 < 77

Add 33 to both sides

11x - 33 + 33 < 77 + 33

11x <110

x < 110/10

x< 11

Hence the correct inequality expression is x < 11

Learn more on inequality here: brainly.com/question/24372553

#SPJ1

5 0
2 years ago
SOMEONE PLEASE HELP ME!!!!!!
VashaNatasha [74]

Answer:

There are multiple possibilities. One is there are 12 boys, and 16 girls. 12+16= 28 which is between 20 and 30. That would be 12:16, which can be simplified to 3:4. There is also 9 boys, and 12 girls. that would be 9:12, which can be simplified to 3:4. Also, 9 + 12 = 21, which is between 20 and 30.

7 0
3 years ago
What is the probability of getting a factor of 6 when you have 1 2 3 4 5 6
Marrrta [24]
Hello,

I suppose you mean using all those digits one time.

The sum of the digits is a multiple of 3.
Every number formed with those digits is a multiple of 3.

To be divisible by 2 , the number must end with an even digit (2,4,6)

So probability is 3/6=1/2

6 0
3 years ago
What is the radius of the circle x2+y2=36?<br><br> first to answer will mark brainiest
Sveta_85 [38]

Answer:rtyuiop

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • Identify the like terms.
    9·1 answer
  • Based on his salary, Kevin knows that he will have $336.00 withheld from his paycheck for federal income tax. He would like to h
    8·2 answers
  • What is the key action the delegates took up about money?
    14·1 answer
  • 1. What operations would you use in order to solve 3x – 4 = 26. Please write the operations in the order you would use them.
    7·2 answers
  • The two-way table shows the distribution of gender to favorite film genre for the senior class at Mt. Rose High School.
    13·1 answer
  • Fiona needs $62 to go on a field trip. She has saved $10.50. She earns $6.50 per hour cleaning her neighbor's garden, and she ea
    15·1 answer
  • Presley and Lakira sell cookies. Presley sold 5 less than twice as many cookies as LaKira. If LaKira sold 16 cookies, how many c
    10·1 answer
  • What is 7/3 times 2/3 multiplied in simplest form
    15·2 answers
  • Can anyone help with this quiz???
    9·2 answers
  • BRAINLIEST TO FIRST RIGHT!!!!!!!!!!!<br> oof, all caps lol:)
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!