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
Elena-2011 [213]
3 years ago
11

For the equation x2 + 2x − 8 = 0, what is the sum of the solutions?

Mathematics
1 answer:
Katen [24]3 years ago
5 0

Answer:

-2

Step-by-step explanation:

x^2 + 2x − 8 = 0

What 2 numbers multiply to -8 and add to 2

4*-2 = -8

4-2 = 2

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

Using the zero product property

x+4 =0         x-2=0

x+4-4 =0-4      x-2+2=0+2

x = -4               x=2

We want the sum of the solutions

-4+2 = -2

You might be interested in
Nth term to 4 1 -2 -5 -8
AURORKA [14]

4

4 - 3 = 1

1 - 3 = -2

-2 - 3 = -5

-5 - 3 = -8

It's the arithmetic sequence.

a_n=a_1+(n-1)d

a_1=4,\ d=-3

substitute

a_n=4+(n-1)(-3)=4-3n+3=-3n+7

Answer: a_n=-3n+7


7 0
2 years ago
Can someone pls help me out
r-ruslan [8.4K]

Answer:

405 are not expected to be alive in the next year

7 0
3 years ago
Are G and F mutually exclusive events? Explain. G and F are mutually exclusive because if you are not a finalist, then you canno
Alika [10]

Answer: G and F are mutually exclusive because they cannot occur together

Step-by-step explanation:

According to the definition of mutually exclusive events,

The events which can not occur together and probability of them occurring together is 0 are known as mutually exclusive events.

The first statement gives an implication that if one happens then other happens meaning they could both still happen so it is not true.

The second statement contradict the question about being mutually exclusive events.

The third statement also is a implication that if one event occurs then other does or does not occur.

The last statement is correct one that conforms with the question and obeys the definition of mutually exclusive events.

8 0
2 years ago
Round 8,349.0054 to the nearest thousands place.
pentagon [3]
To round this we have to go to the thousands place since the thousands place in this question is 8 its closer to 10 so the answer is 10k or 10,000
3 0
3 years ago
Read 2 more answers
A box with no top is to be constructed from a piece of cardboard whose length measures 88 in. more than its width. the box is to
MariettaO [177]

Let x be the width of the cardboard (which means the length of the cardboard is x+88), then the dimensions of the box are:

Length = [(x + 88) - 2(33)]

Width = x - 2(33)

Heighth = 33

Volume = length · width · heighth

144,144 = [(x + 88) - 2(33)] · [x - 2(33)] · 33

144,144 = (x+22)(x-66)(33)

4368 = (x+22)(x-66)

4368 = x² - 44x - 1452

0 = x² - 44x - 5820

use the quadratic formula to calculate that x = 101

Answer: cardboard width = 101, cardboard length = 189

4 0
3 years ago
Other questions:
  • What is the difference :8/7-1/3<br> -31/21<br> --7/4<br> -17/21<br> -4/7
    6·2 answers
  • a highschool computer club has 15 members . how many different ways can they choose a president and vice president
    6·1 answer
  • Find the greatest number which divides by 1280 and 1371 leaves a remainder in each case?
    5·2 answers
  • My question says “Round to the millions place by 4,563,009
    11·1 answer
  • Laurie was scuba diving. Each time she dove 5 feet deeper, she would stop and clear her ears. Each time that this totaled 20 fee
    5·2 answers
  • Gwen bought a 5 pound bag of Finch bird seed that cost $16.79. Find the cost per pound of bird seed.
    12·1 answer
  • Point V is on line segment \overline{UW}
    13·1 answer
  • Helen draw a massive circle she the
    12·1 answer
  • Please help me with these questions and show how u got them, i will mark you brainliest !
    11·1 answer
  • PLS HELP! I will give brainliest if correct!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!