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Ray Of Light [21]

3 years ago

13

8x^2+18x+9 What is the factored form of the expression?

1 answer:

Contact [7]3 years ago

4 0

$8x^2+18x+9= \frac{1}{2}(16x^2+(4*9)x+18)=\frac{1}{2}(4x+6)(4x+3) \\= \frac{1}{2}(2)(2x+3)(4x+3)=(2x+3)(4x+3)$

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EXPERT HELP I'LL GIVE BRAINLIEST: EXPLAIN THE ANSWER

prohojiy [21]

Answer:

C

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Electrons execute 1.4*10^6 revolutions per sec in a magnetic field of flux density

seropon [69]

The charge of the electrons is $8.02 \times 10^{-19} \ C$ .

The given parameters:

<em>Number of revolution of the electron, N = 1.4 x 10⁶ rev per sec</em>
<em>Flux density, B = 10⁻⁵ T</em>
<em>Mass of electron, m = 9.11 x 10⁻³¹ kg</em>

<em />

The angular speed of the electron is calculated as follows;

$\omega = 2\pi N\\\\\omega = 2\pi \ \frac{rad}{1 \ rev} \times 1.4 \times 10^6 \ rev/s\\\\\omega = 8.798 \times 10^6 \ rad/s$

The charge of the electrons is calculated as follows;

$F_c= m\omega ^2 r\\\\F_{B}= qvB = q\omega r B \\\\F_c = F_B\\\\m\omega ^2 r = q\omega r B \\\\q = \frac{m\omega ^2 r}{\omega r B} \\\\q = \frac{m \omega }{B} \\\\q = \frac{9.11 \times 10^{-31} \times 8.798 \times 10^6}{10^{-5}} \\\\q = 8.02 \times 10^{-19} \ C$

The charge of the electrons is $8.02 \times 10^{-19} \ C$ .

The complete question here:

Electrons execute 1.4*10^6 revolutions per sec in a magnetic field of flux density 10⁻⁵ T. What will be the value of charge of the electron?

Learn more about magnetic force of electrons here: brainly.com/question/3990732

8 0

1 year ago

Mark wants to know how many families in his neighborhood plan to attend the neighborhood party. He puts all 80 of the neighborho

bonufazy [111]

Answer:

A. No, this is not a valid inference because he asked only 20 families

Step-by-step explanation:

You cannot assume that those are the only families that would want to go; you have to ask all the families.

8 0

2 years ago

Read 2 more answers

Question 4 of 10 Multiple Choice: Please select the best answer and click "submit." In the 1st generation, there are 6 squirrels

Tanya [424]

393216 times 4 because you could continue it on until u get to nine

3 0

2 years ago

The angle of elevation to the top of a 15-story skyscraper is measured to be 4from a point on the ground 2,500 feet from the bui

alexandr1967 [171]

The point of observation is 2500 m away from the foot of the building.

The angle of elevation is 4°.

We need to find the height 'h' of the building.

With respect to 4°,

2500 is the adjacent side.

'h' is the opposite side.

The trigonometric ratio associating opposite & adjacent is tan.

We have

$tan\theta =\frac{opposite}{adjacent}$

$tan4^{o}=\frac{h}{2500}$

Cross multiplying we get

h = 2500 tan4°

h= 174.82 m

Option B) is the right answer.

3 0

3 years ago