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Mekhanik [1.2K]
3 years ago
8

Which Method Should You use? x^2+10x+4=0

Mathematics
1 answer:
lyudmila [28]3 years ago
4 0

x^2 + 10x + 4 = 0

you can use the quadratic formula to solve:

a = 1, b = 10, c = 4

x=  −b ± √b^2 −4ac  / 2a

x = -10 ± √(10)2 − 4(1)(4)  / 2(1)

x = -10 ± √84 / 2

x = -0.42 or -9.58

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A 10 kilogram object suspended from the end of a vertically hanging spring stretches the spring 9.8 centimeters. At time t
xz_007 [3.2K]

Full Question

A 10 kilogram object suspended from the end of a vertically hanging spring stretches the spring 9.8 centimeters. At time t = 0, the resulting mass—spring system is disturbed from its rest state by the force F (t) = 20 cos(8t). The force F (t) is expressed in Newtons and is positive in the downward direction, and time is measured in seconds.

Determine the spring constant k.

Answer:

Spring Constant = 1000Nm^-1

Step-by-step explanation:

Given

Mass = 10kg

Spring Extension = 9.8cm

Spring Constant K = Force/Extension

Force = Mass * Acceleration

Force = 10 * 9.8 = 9.8N

Spring Extension = 9.8 cm = 9.8 /100 = 0.098 m

Spring constant = 98 / 0.098

Spring Constant = 1000Nm^-1

3 0
3 years ago
in 2014 the attendance at jefferson schools fall festival was 600 in 2015 the attendance was 575 what was the percent change in
pantera1 [17]
600 - 575 = 25

\dfrac{25}{600} \times 100\% = 4.17\%

Answer : 4.17%

Hope this helps. - M
8 0
3 years ago
Solve the liner system by graphing. Y=4x. x+y= -5
Darya [45]
(-1,-4) is where the equations Y=4x and x+y=-5 intersect.
3 0
3 years ago
What is the algebraic expression for f divided by 10
erica [24]

Answer:

f ÷ 10

Step-by-step explanation:

We  want to write an expression

divided by means the number or variable before comes first, then the divided by symbol, then what comes after

f ÷ 10

7 0
2 years ago
Read 2 more answers
Please help meee!!
tino4ka555 [31]

Answer:

Yes your friend is correct.

Step-by-step explanation:

This can become very complex when trying to explain but essentially, opposite angles like angle 4 and 6 or the 103 degree and angle 2 would have the same angle measurement. Since angle 2 and 6 are on the same straight line with lines a and b being parallel, we know that that angle 2 and 6 are equal. Since we know that angle 2 and the 103 degree angle are equivalent, we can conquer that angle 6 equals 103 degrees.

6 0
3 years ago
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