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Rama09 [41]
3 years ago
7

Guys i need these answers badly so i would appreciate if someone responded Thanks !

Mathematics
1 answer:
nikdorinn [45]3 years ago
3 0

Answer:

<u>Y is the midpoint of XZ, so XY = YZ</u>

  • 20x - 30 = 12x + 10
  • 20x - 12x = 10 + 30
  • 8x = 40
  • x = 5

<u>Find XZ:</u>

  • XZ = 2(XY) = 2(20*5 - 30) = 140

<u>The answer is: </u>

  • x = 5 and XZ = 140

------------------------

<u>B is the midpoint of AC, so AB = BC</u>

  • 4x + 3 = 2x + 15
  • 4x - 2x = 15 - 3
  • 2x = 12
  • x = 6

<u>Find AC:</u>

  • AC = 2(AB) = 2(4*6 + 3) = 54

<u>The answer is:</u>

  • x = 6, AC = 54
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then, let's calculate each part:

f(a) = 4*cos(7*pi) = -4

df/dx = -4*sin(x)

(df/dx)(a) = -4*sin(7*pi) = 0

(d^2f)/(dx^2) = -4*cos(x)

(d^2f)/(dx^2)(a) = -4*cos(7*pi) = 4

Here we already can see two things:

the odd derivatives will have a sin(x) function that is zero when evaluated in x = 7*pi, and we also can see that the sign will alternate between consecutive terms.

so we only will work with the even powers of the series:

f(x) = -4 + (1/2!)*4*(x - 7*pi)^2 - (1/4!)*4*(x - 7*pi)^4 + ....

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3 years ago
Find the solution to the following: *
Trava [24]

Answer:

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Second one: x = 0

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given 8x+10=2(4x+5) we need to isolate the variable (x) using inverse operations

step 1 distribute the 2 to what is in the parenthesis ( 4x and 5 )

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step 1 distribute the 2 to what is in the parenthesis (x - 4)

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step 3 subtract 2x from each side

3x - 2x = x

2x - 2x = 0

we're left with x = 0

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3 years ago
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