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nalin [4]
3 years ago
6

Which values of c will cause the quadratic equation -- x2 + 3x + c = 0 to have no real number solutions? Check all that

Mathematics
1 answer:
Novay_Z [31]3 years ago
6 0

Answer:

c=5x

Step-by-step explanation:

:D good luck

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A. For what values of k does the function y = cos(kt) satisfy the differential equation 25y'' = −16y?
Oduvanchick [21]

Answer:

Step-by-step explanation:

Given y = coskt

y' = -ksinkt

y'' = -k²coskt

Substitute this y'' into the expression 25y'' = −16y

25(-k²coskt) = -16(coskt)

25k²coskt = 16(coskt)

25k² = 16

k² = 16/25

k = ±√16/25

k = ±4/5

b) from the DE 25y'' = −16y

Rearrange

25y''+16y = 0

Expressing using auxiliary equation

25m² + 16 = 0

25m² = -16

m² = -16/25

m = ±4/5 I

m = 0+4/5 I

Since the auxiliary root is complex number

The solution to the DE will be expressed as;

y = Asinmt + Bsinmt

Since k = m

y = Asinkt+Bsinkt where A and B are constants

6 0
4 years ago
Like for like ? follow for follow ?
VikaD [51]

Answer:

fkdixisidskkxjx

Step-by-step explanation:

dkxndkkcmxkdlcld

6 0
3 years ago
An automobile travels 140 miles in 4 hours. Find the average rate of speed
katen-ka-za [31]

Answer:

35mph

Step-by-step explanation:

divide 140/4=35

7 0
2 years ago
If f (x) = 5 x minus 25 and g (x) = one-fifth x + 5, which expression could be used to verify g(x) is the inverse of f(x)?
Vinil7 [7]

Answer:

The expression used to represent g(x) as inverse of f(x) is \frac{1}{5}(5x-25)+5

Option B is correct.

Step-by-step explanation:

We are given:

f(x)= 5x-25\\g(x)=\frac{1}{5}x+5

We need to find the expression that could be used to verify g(x) is the inverse of f(x).

We know that g(f(x))=x is inverse of function

So placing value of f(x) in g(x)

g(f(x))=\frac{1}{5}(5x-25)+5

So, the expression used to represent g(x) as inverse of f(x) is \frac{1}{5}(5x-25)+5

Option B is correct.

We can also solve to prove that g(f(x))=x

g(f(x))=\frac{1}{5}(5x-25)+5\\g(f(x))=\frac{5}{5}(x-5)+5\\g(f(x))=x-5+5\\g(f(x))=x

5 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST
zloy xaker [14]

Answer:

Should be $300

let me know if it's correct:)

6 0
3 years ago
Read 2 more answers
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