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
Ivenika [448]
3 years ago
11

What are zeros of f(x)=x^2-3x-18. and please explain so I can see if I can understand.

Mathematics
1 answer:
Daniel [21]3 years ago
8 0
F(x) = x^2 - 3x - 18

Find the values that when multiplied equal -18 and when added equal -3 (6 and -3)
Plug it into f(x) = (x - 1st value)(x - 2nd value)

f(x) = (x - 6)(x + 3)
0 = (x - 6) (x + 3)

(One of the factors has to equal zero, so set them both equal to zero)

x - 6 = 0
x = 6

x + 3 = 0
x = -3

x = 6, x = -3


You might be interested in
What’s 3/4 x 22/7 x 2
Zolol [24]

Answer:

4\frac{5}{7}

Step-by-step explanation:

we just multiply numerator by numerator and denominator by denominator

3/4x22/7

66/28x2/1

132/28

4 20/28

4 5/7

Hopes this helps,please mark brainliest

3 0
1 year ago
Read 2 more answers
a yard is equal in length to three feet. the function F(y) takes a measurement in yards (as inputs) and returns a measurement in
Lina20 [59]
1 yard = 3 feet
F ( y ) = 3 y
F ( 10.5 ) = 3 yard * 10.5  feet / yard = 31.5 feet
Answer:
The output will be 31.5
3 0
4 years ago
Read 2 more answers
Audrey's parents give her $5 to play video games at the mall.Each games costs a quarter to play.which choice is NOT a correct me
Paraphin [41]
D. take the number of dollars she has and multiply by .25.

dividing by a number is the same as multiplying by it's reciprocal. since she is dividing by .25, she needs to multiply by the reciprocal (4,) but instead, she is just multiplying by .25.
4 0
3 years ago
Read 2 more answers
Jack’s first weight increased by 20% and then his new weight decreased by 25%. His final weight is what percent of his beginning
ElenaW [278]

Lets suppose his initial weight was 60 kilograms

A gain of 20%  would make his new eight  60 + 20*60/100

=  60 + 12

= 72 kg

he lost 25% of this:-

= 72 -   25 * 72/100 =  54 kg

This = (54/60) * 100  = 90% of his beginning weight  Answer


8 0
4 years ago
A circle has its center at (−1, 2) and a radius of 3 units. Find the equation of the circle using the Pythagorean Theorem. PLEAS
notka56 [123]
Pythagorean Theorem is for triangles not circles. 

The equation of a circle is (x - h)² + (y - k)² = radius² where (h, k) is the center.

Plug in your given information and simplify.

(x - (- 1))² + (y - 2)² = (3)²

(x + 1)² + (y - 2)² = 9 is your equation. 
6 0
3 years ago
Read 2 more answers
Other questions:
  • Can please cross multiply this for me :)
    6·2 answers
  • If the car dealer pays 85% of the base price and 75% of the installed options price from the manufacturer,
    13·1 answer
  • Thefirstassignmentinastatisticalcomputingclass involves running a short program. If past experience indicates that 40% of all st
    13·1 answer
  • Solve for f. -3/4f = 5/4
    13·2 answers
  • How do you change negative 33/165 into simplest form
    15·1 answer
  • Find the missing probability. P(A)=13/20,P(A∩B)=13/25,P(B|A)=? A. 21/100 B. 4/5 C. 1/5 D. 1/4
    6·1 answer
  • Whats 20,000,000x - 3 =
    14·1 answer
  • Joe ate twice as many pieces of Halloween candy as Ed. Together they ate 48 pieces.
    15·1 answer
  • What are the three different kinds of problems we can solve using the percent proportion?
    6·1 answer
  • I need help finding the slope and what m =
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!