All categories

3 years ago

Write a quadratic equation with the given roots. Write the equation in the form ax? + bx + c = 0, where a, b,

Mathematics

1 answer:

Gwar [14]3 years ago

6 0

Answer:(x^2 + 6x+5)

Step-by-step explanation : eso es porque es los primeros numeros sumados que te dan -5 y la multiplicacion -1 $x^{2} + 6x + 5$

You might be interested in

I need help with number 35.

Sergio039 [100]

Since ED and DB are exactly half of EB, we can set ED and DB equal to each other.

x + 4 = 3x - 8

Subtract x from both sides. Add 8 to both sides

12 = 2x

Divide both sides by 2

6 = x

ED = 6 + 4 = 10

ED = DB = 10

EB = ED +DB = 10 + 10 = 20

ED = 10

DB = 10

EB = 20

6 0

3 years ago

Factor completely x^2 − 10x + 25.

Olenka [21]

The answer is a.
x^2 -10x+25 = x*x-2*5*x+5*5 => (x-5)(x-5)

8 0

3 years ago

Read 2 more answers

mike, dave and john worked for a total of 56 hours. Dave worked 6 more than 4 times as many hours as mike. John worked 6 less th

Daniel [21]

Answer:

1. Dave worked for 34 hours.

2. Perimeter of the rectangle is 172 cm.

Step-by-step explanation:

1. Determination of the hours Dave worked.

Let D represent Dave.

Let M represent Mike.

Let J represent John.

Tota time worked by Dave, Mike and John is 56 hours. This can be written as:

D + M + J = 56 ..... (1)

Dave worked 6 more than 4 times as many hours as Mike. This can written as:

D = 6 + 4M .....(2)

John worked 6 less than 3 times as many hours as Mike. This can be written as:

J = 3M – 6 ........ (3)

Substituting the value of F and J into equation 1, we have:

D + M + J = 56

D = 6 + 4M

J = 3M – 6

6 + 4M + M + 3M – 6 = 56

6 – 6 + 4M + M + 3M = 56

8M = 56

Divide both side by 8

M = 56/8

M = 7

Substitute the value of M into equation (2) to obtain the value of D.

D = 6 + 4M

M = 7

D = 6 + 4(7)

D = 6 + 28

D = 34

Therefore, Dave worked for 34 hours .

2. Determination of the perimeter.

Length (L) = 64 cm

Width (W) = 22 cm

Perimeter (P) =?

P = 2(L + W)

P = 2 (64 + 22)

P = 2 (86)

P = 172 cm

Therefore, the perimeter of the rectangle is 172 cm

6 0

3 years ago

When Nayeli goes bowling, her scores are normally

Ber [7]

Using the normal distribution, it is found that she scores less than 128 in 28.1% of her games.

<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.

In this problem, the mean and the standard deviation are given, respectively, by $\mu = 135, \sigma = 12$ .

The proportion of games in which she scores less than 128 is the p-value of Z when X = 128, hence:

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

$Z = \frac{128 - 135}{12}$

Z = -0.58

Z = -0.58 has a p-value of 0.281.

She scores less than 128 in 28.1% of her games.

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

#SPJ1

3 0

2 years ago

The average price (in dollars) to rent a studio in a certain city can be approximated by the equation p - 24.1t+575 where t is

krok68 [10]

Answer:

69 years after 2005 which is in 2074 year the average price of a studio in this city will reach $1081.10.

Step-by-step explanation:

Given:

Average Price to rent a studio is denoted by 'p'.

It is been approximated by equation:

$p-24.1t+575$

where t ⇒ number of years since 2005

Now given:

Average Price to rent a studio p = $1081.10

Substituting the value of p in above equation we get;

$1081.10-24.1t+575$

Solving the new equation to find the value of t we get;

$1656.1=24.1t$

Dividing both side by 24.1 we get;

$\frac{1651.1}{24.1} =\frac{24.1t}{24.1} \\\\t= 68.71 \approx 69 years$

Hence 69 years after 2005 which is in 2074 year the average price of a studio in this city will reach $1081.10.

7 0

3 years ago