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
Anastasy [175]
3 years ago
13

Help plz 20 points !!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
sineoko [7]3 years ago
4 0

Answer:

(- 3, 0 ) and (5, 0 )

Step-by-step explanation:

To find the x- intercepts let f(x) = 0 , that is

x² - 2x - 15 = 0

Consider the factors of the constant term (- 15) which sum to give the coefficient of the x- term (- 2)

The factors are - 5 and + 3 , since

- 5 × 3 = - 15 and - 5 + 3 = - 2 , then

(x - 5)(x + 3) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 5 = 0 ⇒ x = 5

x + 3 = 0 ⇒ x = - 3

The x- intercepts are (- 3, 0 ) and (5, 0 )

You might be interested in
Find (co d)(x).<br> c(x) = 3x - 6<br> d(x) = -5x + 4<br> Please continue to help me, thank you
Andreas93 [3]

Answer: -15x+6

Step-by-step explanation:

c(x) = 3x - 6

d(x) = -5x + 4

(cod)(x)=

c(d(x))=

c(-5x+4)=

3(-5x+4)-6=

-15x+12-6=-15x+6

3 0
1 year ago
farmer jim keeps 12 eggs in every coops. if farmer jims has 20 coops, how many hens does he have in all? if every hen lays 9 egg
WITCHER [35]
I think The answer would be 9
6 0
3 years ago
How many times larger is 4 x 10 12 than 8 x 10 7?
Montano1993 [528]
Its not larger. 8*10*7 is larger :)
7 0
3 years ago
People at the state fair were surveyed about which type of
Ronch [10]

Answer:

Step-by-step explanation:

You would require the table with the number of males and females who prefer either pink or yellow lemonade at the state fair.

                      Pink Lemonade         Yellow Lemonade       TOTAL

 

Male                    156                                104                          260

 

Female                  72                               48                          120

 

TOTAL                 228                               152                         380

P(pink lemonade | female) = 72 / (48 + 72) = 72 / 120 = 0.6

P(pink lemonade) = (156 + 72) / (156 + 72 + 104 + 48) = 228 / 380 = 0.6

Therefore, The event "prefers pink lemonade" and "female" are independent because P(pink lemonade | female) = P(pink lemonade) = 0.6

6 0
4 years ago
Question is attached
Grace [21]

I apologize, I am stumped... I thought you would find either the centroid, circumcenter, or incenter of the triangle created but it didn't work quite right for me.

8 0
3 years ago
Other questions:
  • A youth Basketball has a standard Circumference of 27 inches. An NBA standard ball is 29.5 inches.
    10·1 answer
  • How many eggs are there in 4 1/4 dozen eggs?
    7·2 answers
  • A Line Gas A Slope Of 1 Passes Through The Point (-1,-3). What Is It's Equation In Slope-Intercept Form ?
    8·1 answer
  • A pair of earrings has blue wedges that are all the same size. One earring has a 25 degree yellow wedge. The other has a 14 degr
    7·2 answers
  • Find the explicit formula for the given sequence.<br> 1,5, 25, 125, ....
    8·1 answer
  • In standard form 80 tens and 73 ones?
    9·1 answer
  • If g(x) = /-83. find g(19)
    10·1 answer
  • What is 6/5 in factored form
    13·2 answers
  • 150 is 25% of what number? Four students solved this problem using equivalent ratios. Choose the student whose work is correct.
    8·2 answers
  • A line contains the two points plotted in the coordinate plane below.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!