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
Virty [35]
3 years ago
5

Y = x^2 + 2x - 8 Solve with zeros

Mathematics
1 answer:
Katen [24]3 years ago
6 0

Answer:

x=-4  x=2

Step-by-step explanation:

y = x^2 + 2x - 8

Set equal to zero

0 = x^2 + 2x - 8

Factor

What two numbers multiply to -8 and add to 2

4 * -2 = -8

4+-2 = 2

0=(x+4) ( x-2)

Using the zero product property

x+4 =0   x-2 =0

x=-4  x=2

You might be interested in
An astronaut on the moon throws a baseball upward. The astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 50
ASHA 777 [7]

Answer:

please answer me binary number multiply 11010 multiply 101

5 0
3 years ago
If a-1/a = 8 find the value of (a+1/a) square​
Strike441 [17]

Answer:

(1) a+1/a=8a+2/8a+1

(2) a²-1/a²=(a+1)(a-1))a²

(8a+2)(8a)/(8a+1)²

8 0
3 years ago
There are three ways that players can score in basketball. Making a free throw counts as 1 point. Making a field goal counts as
ICE Princess25 [194]

Answer: what the math that we have to solve?

Step-by-step explanation:

6 0
3 years ago
A superhero is rendered powerless when exposed to 3535 or more grams of a certain element. A 550550 year old rock that originall
bazaltina [42]

Answer:

(a)

The quantity of element that are still contained in the stolen rock

is 37.1627g

(b)

this rock can be used by the superhero's nemesis to render the superhero powerless is 567 years

Step-by-step explanation:

We are given

original quantity =250g

half life time =200 years

so, we can use formula

P(t)=P_0(0.5)^{\frac{t}{h} }

where

Po is initial quantity

h is half life time

t is time in years

so, we can plug h=200  and Po=250

and we get

P(t)=250(0.5)^{\frac{t}{200} }

(a)

we can plug t=550

and then we can find P(t)

P(550)=250(0.5)^{\frac{550}{200} }

we get

P(550)=37.1627g

(b)

we can set P(t)=35

and then we can solve for t

35=250(0.5)^{\frac{t}{200} }

0.5^{\frac{t}{200}}=\frac{7}{50}

we can take ln on both sides

\ln \left(0.5^{\frac{t}{200}}\right)=\ln \left(\frac{7}{50}\right)

t=\frac{200\ln \left(\frac{7}{50}\right)}{\ln \left(0.5\right)}

t=567.3

t=567 years

6 0
3 years ago
Help me ASAP for this question
nydimaria [60]
(-2,2) is the correct answer
8 0
3 years ago
Other questions:
  • 3eighths - negitive 5 and 1 fourths
    11·2 answers
  • 32 is the sum of a number z and 9
    6·2 answers
  • What is the inverse of the function f(x) = 2x – 10?
    15·1 answer
  • If I have 9 employees and only 5 of them worked. What is my percentage
    15·1 answer
  • Choose the number that is 1/4 of 1/2 of 1/5 of 200:
    14·1 answer
  • keith bought 2 flats of strawberries . each flat contains 8 baskets. if he gave away 4 baskets . how many baskets does keith hav
    10·2 answers
  • Can please help!
    8·1 answer
  • Help me solve this please
    7·1 answer
  • I need help pleaseee):
    8·1 answer
  • 1. What is the value of n in -57 - n = -144?<br> A-201<br> B-87<br> C 87<br> D 201
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!