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NARA [144]
4 years ago
15

How to you solve x2 -20x -17 = -53

Mathematics
1 answer:
Gennadij [26K]4 years ago
7 0

Answer:

solve for x

x=2

Step-by-step explanation:

x2-20x-17=-53

reorder like terms x2= 2x       2x=20x-17=-53

collect like terms 2x-20x=-18x           -18x-17=-53

move constant to the right hand side and change its sign   -18x=-53+17

calculate the sum -53+17= -36         -18x=-36

divide both sides by -18  -18x÷-18= x        -36÷-18=2

x=2

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A stock market analyst examined the prospects of the shares of a large number of corporations. When the performance of these sto
choli [55]

Answer:

Solution:Bayes:E1: Stock performs much better than the market averageE2: Stock performs same as the market averageE3: Stock performs worse than the market averageA: Stock is rated a ‘Good Buy’Given thatP(E1) = .25,P(E2) = .5,P(E3) = .25,P(A| E1) = .4,P(A| E2) = .2,P(A| E3) = .1Then,

P A EP EP EAP A EP EP A EP EP A EP E=++=(.40)(.25).444(.4)(.25)(.2)(.5)(.1)(.25)

8 0
3 years ago
Find f(4) when f(x)=4x^2 - 2 x - 4
prisoha [69]

Answer:

52

Step-by-step explanation:

f(x)=4x^2-2x-4

f(4)=4(4)^2-2(4)-4 (I replaced x with (4) since we are to find f(4).)

f(4)=4(16)-2(4)-4    (By the order of operations, we take care of the exponents before whatever else we have here.)

f(4)=64-8-4           (By the order of operations, we take care of the multiplication as we see if left to right.)

f(4)=56-4              (By the order of operations, we perform addition/subtraction as we see it left to right.)

f(4)=52                 (This completes the simplification.)

We could have also put this in our calculator as:

4(4)^2 -  2(4)  -  4

This would have returned 52.

8 0
3 years ago
The line y=mx+4 passes though the point (5, -6). Find the value of m. <br> Please help me fast
Aloiza [94]

Answer:

-6=m×5 +4

-6=5m +4

5m=-6-4

5m=-10

m=-10/5

m=-2

I would appreciate if my answer is chosen as a brainliest answer

8 0
3 years ago
The blood alcohol (C2H5OH) level can bedetermined by titrating a sample of blood plasma with an acidicpotassium dichromate solut
NISA [10]

Answer:

Step-by-step explanation:

In acidic reaction , equivalent weight of potassium dichromate is

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= 294 / 6

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equivalent weight of alcohol = 46 g

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= 31.05 x .06 cc of M potassium dichromate

= 1.863 cc of M potassium dichromate

= 1.863 x 6 cc of N potassium dichromate

= 11.178 cc of N potassium dichromate

== 11.178 cc of N alcohol

= (11.178 / 1000 ) x equivalent weight of alcohol

= (11.178 / 1000 ) x 46 g

= .514 g

30 g of blood contains .514 g of alcohol

100 g of blood contains (0.514 / 30) x 100

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6 0
3 years ago
Complete the statement. If a transversal intersects two parallel lines, then _____
Marysya12 [62]

Answer:

B)

Step-by-step explanation:

They are intersected to make a same side interior angle.

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4 years ago
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