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3 years ago

Quadratic formula of -2x^2+x+8=0

Mathematics

1 answer:

Vikentia [17]3 years ago

6 0

Answer:

x= 1/4 +(-1/4) √65 or x= 1/4 + 1/4 √65

Step-by-step explanation:

x= −b±√b2−4ac /2a

x= −(1)±√(1)2−4(−2)(8) /2(−2)

x= −1±√65 /−4

x= 1/4 +(-1/4) √65 or x= 1/4 + 1/4 √65

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What's the correct answer to this? Please help..

Zepler [3.9K]

Answer: C

Step-by-step explanation:

Simplify(Subtract 2)

x > 0

Greater than is represented by a open circle with an arrow pointing right. Because x is greater than 0, the point must be on 0.

Hope it helps <3

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3 years ago

Read 2 more answers

BRAINLIEST 100 PTS MATH HELP PLEASE

denis-greek [22]

Answer:

they are 10km 32 degrees far from each other

Step-by-step explanation:

scott - 100km - 30 degrees

spork - 110km - 62 degrees

how far = difference between them

as spork's distance and degrees are greater than scott we substract Scott's from spork's

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2 years ago

(1/3+9) x ( 8-3) tell me the steps help

mafiozo [28]

Use PEMDAS to solve
(Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction)

Solve parenthesis first
(1/3+9) x ( 8-3)
28/3 x 5

Use Multiplication
28/3 x 5 ≈ 4.7
After rounding 4.7 should be your answer

3 0

4 years ago

What is 20-30+40x11-12+13-1000=??? can you get it ???? you will get 50 pints for geting it

AleksandrR [38]

Answer:

-569

Step-by-step explanation:

$20 - 30 + (40)(11) - 12 + 13 - 1000$
$-10 + (40)(11) - 12 + 13 -1000$
$-10 + 440 - 12 + 13 -1000$
$430 - 12 + 13 - 1000$
$418 + 13 - 1000$
$431 - 1000$
$-569$

5 0

3 years ago

write in point-slope form an eauation of the linr thag passes through the givin point and has the givin slope

Tanya [424]

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4 years ago