All categories

2 years ago

To factor 8x² + bx + 3, a student correctly rewrites the trinomial as 8x^2 +px+qx+3. What is the value of pq?

Mathematics

1 answer:

lidiya [134]2 years ago

4 0

It is because it is 2*8(8-8)

You might be interested in

The distance between bases on a baseball field is 90 feet.If 3 players hit home runs during a game and each runs around all 4 ba

m_a_m_a [10]

Well, think about it... 90 feet times 4 bases= 360 feet.. 360 feet times 3 players= 1080 feet

5 0

2 years ago

Which sentence best describes the independent and dependent variables in the following problem? The parking garage charges $3 fo

alexandr402 [8]

Ok so the dependent variable would be $1.45 for each addition hour. The cost depends on every hour so u can't really calculate it unless u have the hours.
$3 is independent since it's only charged on the first hour. It doesn't rely on any other information.

7 0

2 years ago

he life of light bulbs is distributed normally. The variance of the lifetime is 625 and the mean lifetime of a bulb is 540 hours

almond37 [142]

Using the normal distribution, it is found that there is a 0.877 = 87.7% probability of a bulb lasting for at most 569 hours.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

$Z = \frac{X - \mu}{\sigma}$

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

$\mu = 540, \sigma = \sqrt{625} = 25$

The probability of a bulb lasting for at most 569 hours is the <u>p-value of Z when X = 569</u>, hence:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{569 - 540}{25}$

Z = 1.16

Z = 1.16 has a p-value of 0.877.

0.877 = 87.7% probability of a bulb lasting for at most 569 hours.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

8 0

1 year ago

What does 4m^2 +5m if m=-2 equal?

Crazy boy [7]

Answer:

-26

Step-by-step explanation:

tell me if im right and please brainliest

5 0

2 years ago

(a)Find the commission on Rs65 000 if 4% commission is paid.

Neporo4naja [7]

Answer:

Step-by-step explanation:

commission amount = 4 % of Rs 65000

=4/100 * 65000

=260000/100

=2600

therefore commision amount is Rs 2600

SP od an article = Rs 2700

profit %=8%

let CP be x

SP=CP + profit% of CP

2700=x + 8/100 *x

2700=100x + 8x/100

2700*100 = 108x

270000=108x

270000/108=x

2500=x

therefore cost price (CP) of an article is Rs 2500.

5 0

2 years ago