1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vovikov84 [41]
3 years ago
14

Factor this expression. x2 + 9x + 8

Mathematics
1 answer:
Ket [755]3 years ago
6 0

Answer:

(x+1)(x+8) When factoring squares whose squared coefficient is one the roots must add up to the coefficient of the slope and multiply out to the intercept value.

You might be interested in
Someone help need this to pass last question for today!
Bezzdna [24]

<em>Answer: Reflection=simply flipping an object across a line without changing its size or shape. While Translation just slide a figure in any direction without changing its size, shape or orientation.</em>

<em />

<em>Hopes that helps have a blessing day/night :)</em>

<em />

8 0
2 years ago
48. Reading Rates The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute a
son4ous [18]

Answer:

The reading speed of a sixth-grader whose reading speed is at the 90th percentile is 155.72 words per minute.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 125, \sigma = 24

What is the reading speed of a sixth-grader whose reading speed is at the 90th percentile

This is the value of X when Z has a pvalue of 0.9. So it is X when Z = 1.28.

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

1.28 = \frac{X - 125}{24}

X - 125 = 1.28*24

X = 155.72

The reading speed of a sixth-grader whose reading speed is at the 90th percentile is 155.72 words per minute.

4 0
3 years ago
Read 2 more answers
Solve −2(n+3)−4=8 . The solution is n= .
Anton [14]

Answer:

n= -9

Step-by-step explanation:

Simplifying

-2(n + 3) + -4 = 8

Reorder the terms:

-2(3 + n) + -4 = 8

(3 * -2 + n * -2) + -4 = 8

(-6 + -2n) + -4 = 8

Reorder the terms:

-6 + -4 + -2n = 8

Combine like terms: -6 + -4 = -10

-10 + -2n = 8

Solving

-10 + -2n = 8

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '10' to each side of the equation.

-10 + 10 + -2n = 8 + 10

Combine like terms: -10 + 10 = 0

0 + -2n = 8 + 10

-2n = 8 + 10

Combine like terms: 8 + 10 = 18

-2n = 18

Divide each side by '-2'.

n = -9

Simplifying

n = -9

3 0
3 years ago
When pouring water from one five gallon bucket to another, a person tends to pour at a faster rate at first and then slow down i
Nitella [24]

I will assume that 0.62 is an exponent   then

amount left  after t seconds = f(6) =   5 - 0.82(6)^0.62

= 2.51 gallons to nearest hundredth.

4 0
3 years ago
HELP ME PLEASE I NEED ANSWERS REALLY FAST I'LL GIVE BRAINLIEST TO THE CORRECT ANSWER SO PLEASE HELP ME!!!!
inessss [21]

Correct answers in reasoning and statements together.

Please give brainliest thank you so much!!

Hope this helps!!

4 0
2 years ago
Read 2 more answers
Other questions:
  • A building is 75 feet tall. On a scale model , 5cm will represent 3 feet How many cm tall will the model be
    5·2 answers
  • it took jayla 40 seconds to rip half a DVD. What is jaylas ripping rate in dvds per minute in fraction form?
    9·2 answers
  • Solve this system of equations by using substitution<br><br> 3x + 5y = 23<br> y= x + 3
    9·1 answer
  • Hey! Please find the value of x, so I can find the value of angle H! Thanks
    10·1 answer
  • What is the dollar amount of the Gentry's annual food and housing budgets combined?
    14·1 answer
  • (Pl3ase H3lp M3) -1 3/5 ÷ -2/3​
    9·1 answer
  • Carmela saves 8% of her weekly earnings. She earned $25 last week. How
    13·2 answers
  • At the annual fair in Springfield, the entrance fee $20 and every ride requires a $3
    9·2 answers
  • Introduction to Quadrilaterals-part 1 math nation
    12·1 answer
  • Exam: 05.03 Exponential and Logarithmic Functions Mid-Module Check<br><br><br> Solve 4x = 8x − 1
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!