Answers
Related Questions
Evaluate each function given that f(x)=3x^2-2x and g(x)= -8x-x. Give your answer in simplest form.
a) f(-9)
b) g(-3)
c) f (p+4)
Answers
9514 1404 393
Answer:
26127 (see comment)3p^2 +22p +40Step-by-step explanation:
In each case, put the function argument where the variable is and do the arithmetic (or algebra).
a) f(-9) = 3(-9)^2 -2(-9) = 3·81 +18 = 261
__
b) g(-3) = -8(-3)-(-3) = 24 +3 = 27
__
c) f(p+4) = 3(p+4)^2 -2(p+4)
= 3(p^2 +8p +16) -2p -8
= 3p^2 +22p +40
_____
Additional comment
The form of g(x) is unusual, leading us to suspect it might be ...
g(x) = -8x^2 -x
In that case,
g(-3) = -8(-3)^2 -(-3) = -8·9 +3 = -69
The system has no solution.
The system has a unique solution:
System B
(x, y)= (1
x+4y=4
-x=4y-4
O The system has infinitely many solutions.
They must satisfy the following equation:
y= 0
Answers
Answer:
21
Step-by-step explanation:
Just add then multiplay the numbers.
Help help math math ASAP
Answers
Which relationships describe angles 1 and 2?
Select each correct answer.
complementary angles
adjacent angles
supplementary angles
vertical angles
Answers
Answer:
supplementary angles because they add 180 degrees
Step-by-step explanation:
hope this helped
Answer: Supplemetary Angels, Adjacent Angels
B,C
Step-by-step explanation: The other person is wrong
Evaluate the following expression:
Answers
Answer:
5.25
Step-by-step explanation:
Answer questions for points
Answers
Step-by-step explanation:
wat questions are we needed to answer
Answer:
Hello! Thank you for the points! Trying to rank up here!
Find the zeros of the function.
f(x) = 2x2 – 36
Answers
Answer:
3√2 and -3√2
Step-by-step explanation:
2x^2-36
2(x^2-36)
2(x+3√2)(x-3√2)
Answer:
-4.24 and 4.24
Step-by-step explanation:
5.16 Identify hypotheses, Part II: Write the null and alternative hypotheses in words and then symbols for each of the following situations. (a) Since 2008, chain restaurants in California have been required to display calorie counts of each menu item. Prior to menus displaying calorie counts, the average calorie intake of diners at a restaurant was 1100 calories. After calorie counts started to be displayed on menus, a nutritionist collected data on the number of calories consumed at this restaurant from a random sample of diners. Do these data provide convincing evidence of a difference in the average calorie intake of a diners at this restaurant?
Answers
Answer:
H₀: µ = 1100 vs. Hₐ: µ ≠ 1100.
Step-by-step explanation:
A null hypothesis is a sort of hypothesis used in statistics that intends that no statistical significance exists in a set of given observations.
It is a hypothesis of no difference.
It is typically the hypothesis a scientist or experimenter will attempt to refute or discard. It is denoted by H₀.
For instance, H₀: µ = µ₀, where µ₀ is some null value or some claimed value.
Whereas, the alternate hypothesis is the contradicting statement to the null hypothesis.
The alternate hypothesis describes direction of the hypothesis test, i.e. if the test is left tailed, right tailed or two tailed.
It is also known as the research hypothesis and is denoted by Hₐ.
In this case the hypothesis can be defined as follows:
Null hypothesis:
H₀: The average calorie intake of a diner at this restaurant is 1100, i.e. µ = 1100.
Alternate hypothesis:
Hₐ: The average calorie intake of a diner at this restaurant is different from 1100, i.e. µ ≠ 1100.
6. What is the area of OW?
(А) Зл
В) бл
9л
D) 36л
Answers
Answer:
B
Step-by-step explanation:
Given that a=4 and b=5. evaluate : a²+3b
Answers
Answer:
4² + 3(5)
= 4 × 4 + 15
= 16 + 15
= 31
Leila is buying a dinosaur model. The price of the model is x dollars, and she also has to pay a 7% tax. Which of the following expressions could represent how much Leila pays in total for the model? Choose 2 answers: A.) 107/100x
B.) 0.7x + x C.) 1.07x D. x + 7/10x E. 1.7x
Answers
Answer:
B
Step-by-step explanation:
Leila is paying a flat rate of x dollars: so x
and she is also paying a 7% tax rate: meaning 7/100 or 0.07
Thus, the matching answer is b although should be 0.07.
Answer:
A and C
Step-by-step explanation:
Robert builds a rectangular deck with a length that is four less than two times the width of the deck.
Write the equation for the area of the deck, where w is the width.
Answers
Let
Width be wLength=2w-4Now
[tex]\\ \sf\longmapsto Area=Length\times Breadth [/tex]
[tex]\\ \sf\longmapsto Area=w(2w-4)[/tex]
[tex]\\ \sf\longmapsto Area=2w^2-4w[/tex]
sin
[tex] \sin( \binom{ - 11\pi}{3} ) \times \tan( \frac{35\pi}{6} ) \times \sec( - ) [/tex]
Answers
Answer:
solve it :)
Step-by-step explanation:
Using the formula below or Excel, find the correlation coefficient, r, for this set of scores. Answer choices are rounded to the nearest hundredth.
r equals fraction numerator 1 over denominator n minus 1 end fraction sum from blank to blank of open parentheses fraction numerator x minus x with bar on top over denominator s subscript x end fraction close parentheses open parentheses fraction numerator y minus y with bar on top over denominator s subscript y end fraction close parentheses
Answers
The correlation coefficient measures the relationship between the two variables
The correlation coefficient is 0.234
How to determine the correlation coefficientThe formula of correlation coefficient is:
[tex]r = \frac{1}{n - 1} * \sum{(\frac{x - \bar x}{\sigma_x})*(\frac{y - \bar y}{\sigma_y})[/tex]
Using the dataset from the complete question, we have:
[tex]r = \frac{1}{5 - 1} * 0.9375[/tex]
Evaluate the difference
[tex]r = \frac{1}{4} * 0.9375[/tex]
Evaluate the quotient
[tex]r = 0.234375[/tex]
Approximate
[tex]r = 0.234[/tex]
Hence, the correlation coefficient is 0.234
Read more about correlation coefficient at:
https://brainly.com/question/4219149
Is the point (-4, 5) a solution of the standard form equation -2x-2y=-2
Answers
Answer:
not that i know of
Step-by-step explanation:
besties i need help !!
please help asap
Answers
Answer:
the answer is 623.1.
Step-by-step explanation:
The way this question should be written to be correct scientific notation is 2.3x10^5 + 3.6x10^6 which would equal 3.83x10^6
help with all of these please ! i’m on a time limit and i don’t have much time left.
Answers
Answer:
1. 10.235
2. 213.5
3. 46
4. 225
5. 530
51:30
If one term of a proportion is not known, what can be used to find the value of that term?
a substitution
c cross-multiplication
b. graphing
d. adding all the numbers together
Please select the best answer from the choices provided
CA
B
Answers
Answer:
The correct option is 'c' cross-multiplication
Step-by-step explanation:
The same sequence may be defined in three ways: 1) f(x) = 3x + 4 for x = {1, 2, 3, ...}, 2) a1 = 4 and an + 1 = an + 3 for n = {1, 2, 3, ...} and 3) an = 4 + 3(n − 1) for n = {1, 2, 3, ...}.
They are all supposed to generate the same values, but one version may contain an error. If one version contains an error, identify the one with the error and fix it.
Answers
Answer:
its B
Step-by-step explanation:
Which of the following is a correct statement about the number and the set it belongs to?
+ π is REAL and RATIONAL only.
+ None of these
+ Repeating decimals are REAL and IRRATIONAL.
+ 2515 is REAL and RATIONAL.
+ −25 is REAL, RATIONAL, INTEGER, WHOLE and NATURAL.
Answers
9514 1404 393
Answer:
2515 is REAL and RATIONAL
Step-by-step explanation:
π is irrational
Repeating decimals are rational.
-25 is neither a Whole nor Natural number. (Whole numbers are non-negative integers; Natural numbers are positive integers, sometimes including 0.)
Any integer or fraction is REAL and RATIONAL. 2515 is an integer, so it is ...
2515 is REAL and RATIONAL
$140.00 for 17ft squared
Answers
Answer: what is the question tho???
HELP PLS What is the mtw?
Answers
Answer:
mTW = 230
Step-by-step explanation:
Remark
You have to assume that O is the center of the circle. Two sectors are marked as equal, so equate them to find x
Equation and Solution
5x + 5 = 4x - 20 Subtract 5 from both sides
5x + 5 - 5 = 4x+ 20 - 5 Combine
5x = 4x + 15 Subtract 4x from both sides.
5x-4x = 4x-4x + 15
x = 15
TOU = 5*15 + 5 = 80
VOW = 80 TOU and VOW are marked as equal
UOV = 6x -20 = 70
Total of all three = 80 + 80 + 70 = 230
How many whale sharks would a researcher need to measure so that 90% confidence level would have a margin of error of 0.25
Answers
About 1407 sharks would be needed to have a margin of error of 0.25
What is margin of error?
Margin of error is used to determine by what value there is deviation from the real value. Margin of error (E) is given by:
[tex]E=Z_\frac{\alpha}{2} *\frac{standard\ deviation}{\sqrt{sample\ size} }[/tex]
The 90% confidence level have a z score of 1.645. Hence for E = 0.25, standard deviation = 5.7 feet, hence:
[tex]0.25=1.645*\frac{5.7}{\sqrt{sample\ size}}\\ \\sample\ size=1407[/tex]
About 1407 sharks would be needed to have a margin of error of 0.25
Find out more on margin of error at: https://brainly.com/question/10218601
A class has 36 students in it and 25% of the students wore hats to school.What fraction of the students wore hats?
Answers
Answer:
9/36 or 1/4
Step-by-step explanation:
The expression 15 – 5xy can be written as
Answers
Answer:
Hey there!
15 – 5xy
=> Factor 15+5xy
5xy+15
=5(xy+3)
Answer:
5(xy+3)
Or, 5(3 - xy)
someone pliz solved = (27) -1/3×(27) -1/3×[(27) 1/3-(27) 2/3]
Answers
find the value of 5 (x - 7) = 7x -5(pls answer)
Answers
Step-by-step explanation:
1,3x+9=44-2x3x+2x=44-95x=35 5=72.3x+6=x+23x-x=2-62x=-4 2x=2
BTW I'M SORRY IF THAT'S WRONG
Answer:
x = -15
Step-by-step explanation:
5 (x - 7) = 7x - 5
Remove the parentheses
5x - 35 = 7x - 5
Move the terms
5x - 7x = -5 + 35
Collect like terms Calculate
-2x = 30
Divide both sides
x = -15
PLEASE MARK ME AS BRAINLIEST AND HAVE A NICE DAY :)
Activity
Blaine is selling tickets to a rock concert. Tickets in the front section cost $60 each. Tickets in the back section cost $40
each. Blaine has 55 tickets left to sell, and to meet his sales quota he needs to sell more than $600 in tickets from the
remaining tickets.
Blaine makes a profit of $40 on every ticket for the front section. He makes a profit of $25 on every ticket for the back
section. What's the maximum profit Blaine can make from selling his remaining tickets?
You may find it helpful to review the steps of linear programming e.
Part A
Write the system of inequalities for the given situation where x represents the number of front section tickets and y
represents the number of back section tickets.
Answers
Answer:
25 tickets more
Step-by-step explanation:
I got x+y is (less than or equal to) 55 for the first inequality and 60x+40y>600 for the second one!
Step-by-step explanation:
Since Blaine can sell a maximum of 55 tickets, the first inequalitly is x+y is less than OR EQUAL TO 55. Since the tickets in the back section cost $40 each, 40y represents the money made from those tickets. Blaine needs to make 600 in sale so the inequality is 60x+40y>600.
Is it possible to have a triangle with the following sides give reason
3cm 4cm 5cm
4cm 5cm 6cm
Answers
Answer: Yes,
Step-by-step explanation:
Because since there are two numbers that are the same and numbers that are different, you can make a triangle out of it. Since a triangle has twi sides that have the same length and a side that has a different length.
Example: 4cm 4cm
If 2 L of water is mixed with 4.5 L of milk and filled into 650 mL cans. Then
cans will be needed to fill the mixture.
Answers
The numbers of can required to fill the mixture is 10 cans
Data;
Volume of water = 2Lvolume of milk = 4.5Lvolume of cans = 650mL = 0.65LNumber of Cans Required to fill the mixtureTo find the numbers of can required to fill the mixture, let's add the volume of the mixture.
volume of mixture = volume of water + volume of milk
volume of mixture = [tex]2 + 4.5 = 6.5L[/tex]
The entire volume of the mixture is 6.5L.
To find the numbers of cans that'll fill the mixture, let us divide 6.5 by 0.65.
Number of can required = [tex]\frac{6.5}{0.65} = 10[/tex]
From the calculation above, we would need 10 cans to fill the mixture.
Learn more on division and proportions here;
https://brainly.com/question/870035