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3 years ago

7

use factoring solve x^3-9x=0, then using the quadratic formula sole 49/2 - 1/4 x^2, explain how you solved and use the vocab wor

ds quadratic formula, factoring, completing the square and discriminant

1 answer:

Simora [160]3 years ago

4 0

Answer:don’t

Step-by-step explanation:

Know

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Simplify, then substitute

trapecia [35]

Answer:

5x +17

Step-by-step explanation:

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3 years ago

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What is the slope of line that passes through (2,-5) and (4,1)?

tester [92]

I hope this helps you

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4 years ago

For a moving object the force acting on the object varies directly from the objects acceleration when a force of 25 N acts on a

77julia77 [94]

Answer:

2m/s²

Step-by-step explanation:

If for a moving object the force acting on the object varies directly from the objects acceleration, then it can be expressed as:

F∝a

F = ka.

F is the force

a is the object's acceleration

From the expression;

k is the constant of proportionality

When an initial force of 25 N acts on the object and the acceleration of the object is 5 m/s², then

k = 25/5

k = 5Ns²/m

If the force exchange to 10 N, the acceleration of the object will be gotten using the relationship above

F = ka

Given F = 10N and k = 5Ns²/m

a = F/k = 10/5

a = 2m/s²

The acceleration of the object will be 2m/s²

3 0

4 years ago

Two bicycles are traveling along perpendicular roads. Bicycle A is traveling due east at 4 mi/hr, and bicycle B is travelling du

nordsb [41]

Answer:

Step-by-step explanation:

Given

speed of cyclist A is $v_a=4 mi/hr$

speed of cyclist B is $v_b=6 mi/hr$

At noon cyclist B is 9 mi away

after noon Cyclist B will travel a distance of 6 t and cyclist A travel 4 t miles in t hr

Now distance of cyclist B from intersection is 9-6t

Distance of cyclist A from intersection is 4 t

let distance between them be z

$z^2=(9-6t)^2+(4t)^2$

Differentiate z w.r.t time

$2z\frac{\mathrm{d} z}{\mathrm{d} t}=2\times (9-6t)\times (-6)+2\times (4t)\times 4$

$z\frac{\mathrm{d} z}{\mathrm{d} t}=(-6)(9-6t)+4(4t)$

$\frac{\mathrm{d} z}{\mathrm{d} t}=\frac{16t+36t-54}{z}$

Put $\frac{\mathrm{d} z}{\mathrm{d} t}\ to\ get\ maximum\ value\ of\ z$

therefore $52t-54=0$

$t=\frac{54}{52}$

$t=\frac{27}{26} hr$

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3 years ago

anna baked 3 batches of cookies with c cookies in each batch she then ate 8 cookies how many cookies does anna have left write y

Helga [31]

I believe 3c - 8 is the correct answer

Hope this helped! :)

7 0

3 years ago

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