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mr Goodwill [35]
3 years ago
10

PLEASE HELP ME!!!!!!

Mathematics
1 answer:
Sonja [21]3 years ago
6 0

Answer:

\huge \red{ c_3 = - 1}

Step-by-step explanation:

c_1 = 1 \\  \\ c_n= - 2c_{n-1}+5 \\  \\ c_2 = - 2c_{2-1}+5 \\  \\ c_2 = - 2c_{1}+5 \\  \\ c_2 = - 2(1)+5 \\  \\ c_2 = - 2+5 \\  \\  \huge \purple{c_2 =3} \\  \\ c_3 = - 2c_{3-1}+5 \\  \\ c_3 = - 2c_{2}+5 \\  \\ c_3 = - 2(3)+5 \\  \\ c_3= - 6+5 \\  \\ \huge \red{ c_3 = - 1}

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Use the quadratic formula to find the solutions to the quadratic equation below 2x^2-5x+5=0
Serggg [28]

Answer:

x = (5 + i sqrt(15))/4 or x = (5 - i sqrt(15))/4

Step-by-step explanation:

Solve for x:

2 x^2 - 5 x + 5 = 0

Hint: | Using the quadratic formula, solve for x.

x = (5 ± sqrt((-5)^2 - 4×2×5))/(2×2) = (5 ± sqrt(25 - 40))/4 = (5 ± sqrt(-15))/4:

x = (5 + sqrt(-15))/4 or x = (5 - sqrt(-15))/4

Hint: | Express sqrt(-15) in terms of i.

sqrt(-15) = sqrt(-1) sqrt(15) = i sqrt(15):

Answer: x = (5 + i sqrt(15))/4 or x = (5 - i sqrt(15))/4

5 0
3 years ago
20% of what number is 90?
ehidna [41]
90 = (20)(x)
so you have to solve for x
90/.20 =450
answer is 450
8 0
2 years ago
Help me plssssssss!!!!!!!
ExtremeBDS [4]

Answer:

44 degrees

Step-by-step explanation:

there's two ways u could do this. One is all triangles add up to 180 degrees. u simply ignore the outside angle of 136 degrees, and add 62 and 74, and u get 136. take 180-136, and u get 44.

Another way is all strait angles add up to 180 degrees. take 180-136, and u get 44 degrees

Hope this helps and have a nice day :) :) :)

8 0
3 years ago
F(x) = 9x + 7 <br>f(b) = 16 <br>b = ? ​
brilliants [131]
<h2>♪Answer : </h2>

»f(x) = 9x + 7

»f(b) = 16

  • x = b

»f(b) = 9b + 7

»16 = 9b + 7

»16 - 7 = 9b

»9b = 9

»b = 9/9

»b = 1✅

7 0
2 years ago
Read 2 more answers
A box contains different colored paper clips. The probability of drawing two red paper clips from the box without replacement is
Levart [38]
2/5 * P(2nd red) = 1/7
P(2nd Red) = 1/7 * 5/2
P(2nd Red) = 5/14 or D
8 0
3 years ago
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