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
Crazy boy [7]
3 years ago
11

Find the standard form of the quadratic equation: f(x)=(2x-1)(x+4)

Mathematics
1 answer:
katrin [286]3 years ago
3 0

Answer:

f(x) =  2x ^{2}  + 7x  -  4

Step-by-step explanation:

\because \: f(x) = (2x - 1)(x + 4) \\  \therefore \:f(x) =  2x(x + 4)  - 1(x + 4) \\ \therefore \:f(x) =  2x ^{2}  + 8x -   x  -  4 \\ \therefore \:f(x) =  2x ^{2}  + 7x  -  4 \\

You might be interested in
Plss help i’ll give brainliest thank you!
LenaWriter [7]
<h2>Answer:</h2><h2><u>CORR</u><u>ECT</u><u> ANSWER</u><u> </u><u>IS</u><u> </u><u>2</u><u>4</u><u> </u><u>P</u><u>LEASE</u><u> </u><u>MARK</u><u> </u><u>HAS</u><u> </u><u>BRAINLIST</u></h2>
4 0
3 years ago
How i can answer this question, NO LINKS, if you answer correctly i will give u brainliest!
Helga [31]

Answer:

4:6 = 2:3, the answer is C

Step-by-step explanation:

they visited 4 museums as displayed on the bar and 6 beaches also presented on the bar, which would mean 4:6 and would simplify to 2:3

4 0
2 years ago
A factory needs to produce 1,800 jars of peanut butter on a certain day.
finlep [7]

Answer:

d

Step-by-step explanation:

because in 2 they make 600 and 600 times 3 is 1,800 then do 2 times 3 witch is 6 so 6 hours after 10:30 is 3:30. I hope that makes sense <3

7 0
2 years ago
Does the point (6, 0) satisfy the equation y = x2?
shtirl [24]

Replace x in the equation with the x value of the point (6) and solve. If it equals the y value (0) it is a solution if it noes not equal (0) it is not a solution.

Y = 6^2 = 36

36 is not 0 so (6,0) is not a solution

6 0
3 years ago
Read 2 more answers
Assume that blood pressure readings are normally distributed with a mean of 115 and a standard deviation of 8. If 100 people are
Sergeu [11.5K]

Answer:

D. 0.9938.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of 115 and a standard deviation of 8.

This means that \mu = 115, \sigma = 8

100 people are randomly selected

This means that n = 100, s = \frac{8}{\sqrt{100}} = 0.8

Find the probability that their mean blood pressure will be less than 117.

This is the p-value of Z when X = 117, so:

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

By the Central Limit Theorem

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

Z = \frac{117 - 115}{0.8}

Z = 2.5

Z = 2.5 has a p-value of 0.9938, and thus, the correct answer is given by option D.

8 0
3 years ago
Other questions:
  • If y varies inversely with x and y = 8...<br><br> the question is in the picture
    14·1 answer
  • Please help, find the shaded portion of the circle’s area.
    11·2 answers
  • How much of the circle is shaded? Write your answer as a fraction in simplest form.
    14·1 answer
  • Given: -3(2x + 7) = -29 – 4x; Prove: x = 4
    14·1 answer
  • At the ice cream parlor there are thirty flavors, but for the last week they have only had 25 flavors.
    15·1 answer
  • Write the equation of the line that passes through the points (2,-6) and (6,-6).
    13·1 answer
  • The state of Georgia has roughly 10⁷ human residents. Each human has roughly 10¹³ bacteria cells in his or her digestive tract.
    6·1 answer
  • Macy has 8 quarters and 24 pennies in her pocket. What is the answer that correctly shows the ratio of this comparison?​
    7·1 answer
  • What is the height of the cylinder below?
    7·2 answers
  • 5. During the day a person consumes 360 calories from fruit. How many calories does this person consume in their daily diet? *
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!