3 years ago

What property is this 1 + 2 = 2 + 1

Mathematics

1 answer:

LUCKY_DIMON [66]3 years ago

7 0

Answer: equality of a equation

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6^7/6^5 in index form<br>help me

brilliants [131]

Answer:

12^12

Step-by-step explanation:

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3 years ago

7. Use the discriminant to determine the number of real solutions of the equation. 5x^2- 3x+1=0

MariettaO [177]

Answer:

c. None

Step-by-step explanation:

5x²- 3x+1=0 ax² + b + c = 0

discriminant: b² - 4ac = (-3)² - 4*5 * 1 = 9 - 20 = - 11 (negative)

discriminant < 0 2 imaginary solutions

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3 years ago

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What is the value of x?

Sergeu [11.5K]

Answer:

Step-by-step explanation:

since both the triangles are Congruent

Side BC = side FE

13x - 12 = 7x - 6

13x - 7x = -6 +12

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x = 1

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3 years ago

How do you write 7 1/12 as a decimal

hichkok12 [17]

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Step-by-step explanation:

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3 years ago

A 12-cm-long thin rod has the nonuniform charge density λ(x)=(2.0 nC/cm)e−|x|/(6.0 cm), where x is measured from the center of t

Inessa [10]

Answer:

the total charge is

$Q=24(1-\exp(-1))nC\approx15.171nC$

Step-by-step explanation:

Since x is measured from the center, that means that x=0 is the center so the edges of the rod correspond to x=-6 and x=6. that meas that the total charge can be calculated as

$Q=\int^{6}_{-6}2\exp\left(\frac{-|x|}{6}\right)dx$

separating the integral from -6 to 0 and from 0 to 6, taking into account that |x|=-x for x<0 and |x|=x for x >=0, we get $Q=\int^{0}_{-6}2\exp\left(\frac{x}{6}\right)dx+\int^{6}_{0}2\exp\left(\frac{-x}{6}\right)dx$

using the substitution x=-u in the first integral we get $\int^{0}_{-6}2\exp\left(\frac{x}{6}\right)dx=-\int^{0}_{6}2\exp\left(\frac{-u}{6}\right)du=\int^{6}_{0}2\exp\left(\frac{-u}{6}\right)du$

which is the same as the first integral. Thus, the total charge is given by

$Q=2\int^{6}_{0}2\exp\left(\frac{-x}{6}\right)dx$

integrating we get

$Q=4(-6\exp\left(\frac{-x}{6}\right))\big|^{6}_{0}=-24(\exp(-6/6)-\exp(0))=24(1-\exp(-1))$

4 0

3 years ago