All categories

2 years ago

8fsquare + 4f - 60 its an math equation can anyone plz gimme the answer

Mathematics

1 answer:

hammer [34]2 years ago

6 0

Answer:

f = -3 , 5/2

Step-by-step explanation:

8f² + 4f - 60 = 0

Divide the entire equation by 4

2f² + f - 15 = 0

Product = -30

Sum = 1

Factors = -5 , 6 {(-5)*6 = -30 and -5 +6 = 1}

2f² + f -15 = 0 {Rewrite the middle term using the factors}

2f² + 6f - 5f -15 = 0

2f(f + 3) - 5(f + 3) = 0

(f +3) (2f - 5) = 0

f +3 = 0 ; 2f -5 = 0

f = -3 ; 2f = 5

f = 5/2

You might be interested in

Find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p. , The mean, ,

klemol [59]

Complete Question

Find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p. , The mean, , is nothing. (Round to the nearest tenth as needed.)

p = 0.6 n = 18

Answer:

The mean $\mu = 10.5$

The standard deviation $\sigma = 2.08$

The variance $var = 4.32$

Step-by-step explanation:

From the question we are told that

The probability of success is $p = 0.6$

The sample size is $n = 18$

Generally given that the distribution is binomial, then the probability of failure is mathematically represented as

$q = 1- p$

substituting values

$q = 1- 0.6$

$q =0.4$

Generally the mean is mathematically evaluated as

$\mu = np$

substituting values

$\mu = 18 * 0.6$

$\mu = 10.5$

The standard deviation is evaluated as

$\sigma = \sqrt{npq}$

substituting values

$\sigma = \sqrt{18 * 0.6 * 0.4}$

$\sigma = 2.08$

The variance is evaluated as

$var = \sigma^2$

substituting value

$var = 2.08^2$

$var = 4.32$

4 0

3 years ago

Write the equation -×+3y=6 in slope intercept form.

soldier1979 [14.2K]

Answer:

y=1/3x + 2

Step-by-step explanation:

Since slope intercept form is y=, I first added x to each side to get x on the other side. Then I divided each side by 3 to get y, and ended up with y=1/3x+2 as my answer.

(hope this helps)

4 0

3 years ago

Read 2 more answers

What is the third quartile of these numbers?

irinina [24]

Sadly the answer has to be at least 20 characters long so I have to say this so I can give you the answer which is 14

8 0

3 years ago

Help I don’t understand

blondinia [14]

Answer:

y = 2x + 11

Step-by-step explanation:

y -5 = 2(x+3)

y = 2x+6 +5

y = 2x + 11

the slope of two parallel lines is the same

6 0

3 years ago

Read 2 more answers

Mittens, a baby kitten, gained 120 grams of weight in 1/3 of a month. If Mittens kept growing at this rate, how much weight woul

dlinn [17]

Answer:

Step-by-step explanation:

Given

A baby kitten, gained 120 grams of weight in 1/3 of a month.

he gain in 1 month

Solution

1/3 month =120gram weight

1 month =120×3

=360 gram is the answer

6 0

3 years ago