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Sophie [7]
3 years ago
15

Identify the form of quadratic. * f (x) = 2x2 – 5x + 7

Mathematics
1 answer:
TiliK225 [7]3 years ago
8 0

Answer: The answer is -x+7

Step-by-step explanation:

Multiply the numbers 2 * 2=4

=4x-5x+7

Add similar evidence 4x + -5x =-x

-x+7

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A card is drawn from a standard deck of 52 playing cards. If the card is a club, a fair coin is flipped 9 times and the number o
olasank [31]

Answer: There are 18 elements in the sample space for this experiment

Step-by-step explanation:

Total cards = 52

Total outcomes on tossing a coin = 2   [1 head , 1 tail]

If the card is a club, a fair coin is flipped 9 times and the number of heads flipped is noted (but card drawn is not noted)).

Possible outcomes for heads = 0,1,2,...,9

So sample space for this event = {0,1,2,3,4,5,6,7,8,9} <em> </em><em> (Total </em><em>10 elements</em><em> ) </em><em> (i)</em>

If it is not a club, the coin is only flipped 3 times, but this time the result of each flip is noted(but card drawn is not noted).

Sample space with all possible outcomes ={TTT,TTH, THT, HTT, HTH,HHT,THH,HHH}   <em> (Total </em><em>18 elements</em><em> )  </em><em>(ii)</em>

<em />

From (i) and (ii), Total elements in the sample space for this experiment = 10+8 = 18

Hence, there are 18 elements in the sample space for this experiment

4 0
3 years ago
What is the simplest form of the expression 6x(x − 4) − 16x2 − (9x − 1)
BigorU [14]
If the term in the middle is 16x^2

6x^2-24x-16x^2-9x+1 =

-10x^2-33x+1

5 0
3 years ago
HERES MY QUESTION???!!!!!!!!!!!!!!!
Ivan

Answer:   x=55           y=145

x=55

35+90=125

125-180=55

y=145

180-35=145

I hope this is good enough:

5 0
3 years ago
Read 2 more answers
Carolyn bought 9 feet of copper pipe for 54$ what was the cost of each foot of copper pipe?
Irina18 [472]

Answer:

54÷9= 6

so its $6 a foot of copper

8 0
2 years ago
Read 2 more answers
Enter your answer and show all the steps that you use to solve this problem.
slamgirl [31]

Answer:

h = -t+20

After 8 hours the candle will be 12 inches

Step-by-step explanation:

We have 2 points (time, inches)

 (3,17)  and (5,15)

We can find the slope

m = (y2-y1)/(x2-x1)

   = (15-17)/(5-3)

   = -2/2

   = -1

We can use point slope form

y-y1 = m(x-x1)

Replace y with h and x with t

h-17 = -1 (t-3)

Distribute

h-17 = -t+3

Add 17 to each side

h-17+17 = -t+3+17

h = -t+20

3 0
3 years ago
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