Find the value of the expression

PLEASE HELP Solve for x in the equation 2x^2 - 5x + 1 = 3

Alchen [17]

Answer:

x=5±√414

Explanation:

2x2−5x+1=3

aaaaaaa−3a−3aaaSubtract 3 from both sides

2x2−5x−2=0

This equation is not factorable, so use the quadratic formula.

x=−b±√b2−4ac2aaaa foraaaax2+bx+c=0

a=2,b=−5,c=−2

x=−(−5)±√(−5)2−4(2)(−2)2⋅2

x=5±√414

hope this helped :)

alisa202

3 0

2 years ago

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Simplify. 3^2+ (9-8/2)

solmaris [256]

Hi there! Hopefully this helps!

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Answer: 14.

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First we calculate 3 to the power of 2 and get 9.

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9 + 9 - $\frac{8}{2}$ = 14.

Now we add 9 + 9 to get 18.

18 - $\frac{8}{2}$ = 14.

Then, we divide 8 by 2 to get 4.

18 - 4 = 14.

Then we subtract 4 from 18 to get.....You guessed it, 14!

3 0

2 years ago

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What whould be the fraction of .4375

Akimi4 [234]

Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there are 4 numbers to the right of the decimal point, place the decimal number over 104 (10000). Next, add the whole number to the left of the decimal.4375\10000Cancel the common factor of 625 in 437510000 since 4375\10000=7⋅62516⋅625.743751610000Reduce the expression 4375\10000 by removing a factor of 625 from the numerator and denominator.7\16

8 0

3 years ago

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All bags entering a research facility are screened. The screening process is not perfect so that 77% of the bags that contain fo

garik1379 [7]

Answer:

(1) 0.5933

(2) 0.8955

Step-by-step explanation:

We are given that all bags entering a research facility are screened.

Let Probability that bags entering the building contains forbidden material,

P(F) = 0.69