Answer:
12x^2-6x+9
Step-by-step explanation:
f(x) = 4x^3 - 3x^2 + 9x -5
f'(x) = nx^n-1
f'(x) = 12x^2 - 6x + 9
ANSWER ASAP look at pic and answer #18
Answer:
Four
Step-by-step explanation:
Write a function in any form that would match the graph shown below. please help :)
Answer:
0, -4
2,0
-4,0
-2,-8
Step-by-step explanation:
I chose the points that were most visable
Plss Someone answer!!!!
Answer:
50 hours
Step-by-step explanation:
if it takes 5 hours for 2 inches to fall, then you multiply 2 by ten to get 20, you do the same thing to the other half of the equation, or five, to get 50 hours.
-4.8 (6.3x-4.18)=-58.56 what is x?
Answer:
x = 2.825
Step-by-step explanation:
-4.3(6.3x + -4.18) = -58.56
-4.3(-4.18 + 6.3x) = -58.56
(-4.18 * -4.3 + 6.3x * -4.3) = -58.56
(17.974 + -27.09x) = -58.56
17.974 + -27.09x = -58.56
17.974 + -17.974 + -27.09x = -58.56 + -17.974
0.000 + -27.09x = -58.56 + -17.974
-27.09x = -58.56 + -17.974
-27.09x = -76.534
x = 2.825175341
A manager of the credit department for an oil company would like to determine whether the mean monthly balance of credit card holders is equal to $75. An auditor selects a random sample of 100 accounts and finds that the mean owed is $83.40 with a sample standard deviation of $23.65. If you were to conduct a test to determine whether the auditor should conclude that there is evidence that the mean balance is different from $75, which test would you use? a) Z-test of a population mean b) Z-test of a population proportion c) t-test of population mean d) t-test of a population proportion
Answer:
c) t-test of population mean
Explanation:
The t-test statistic is used in hypothesis testing. Here we would use a one sample t test to test our hypothesis. The one sample t test measures the statistical difference between the hypothesized mean and the sample mean. In a one sample t test or single sample t test, a test variable is measured against a test value.
Example we compare our test variable to the hypothesized mean value $75 above.
The t test is used instead of z score when standard deviation is unknown.
Using the t test, we either accept or reject the null hypothesis given alternative hypothesis.
Pleas help! I'll give brainliest!!!
Which of the following statements is true?
A material with randomly oriented atoms is not magnetic.
All materials are magnetic.
Electrons are atoms that are magnetic.
Electrons are atoms that re magnetic
Answer:
Electrons are atoms that are magnetic.
Step-by-step explanation:
Answer:
Electrons are atoms that are magnetic
sara ordered 2 eggs, a slice of bacon, and a glass of orange juice for breakfast. the sales tax for the order was $0.48. she paid for her breakfast with a $10 bill.
one egg = $1.69
slice of bacon = $1.49
glass of orange juice = $1.09
how much change should sara receive from the $10 bill?
Answer:
She should receive $3.56 from paying with a $10 bill
Step-by-step explanation:
The total cost of all her items including sales tax is
$6.44
You have to deduct this total cost from what she paid with.
$10.00 - $6.44 = $3.56
Therefore,
Sara should receive $3.56 from paying with a $10 bill.
Answer: $3.56
Step by step explanation:
1. Figure out how much the eggs cost. (1.69×2=3.38)
2. Add the price of the eggs, bacon, O.J., and sales tax together. (3.38+1.49+1.09+0.48=6.44)
3. Subtract the total ($6.44) by the amount you paid ($10). (10-6.44=3.56)
what is 11÷132?? anwser please
Answer:
11÷132= 0.0833333333
but i think u wanted this answer
132÷11= 12
A spice merchant divided 9/10 of a pound of ground cinnamon into 3 equal packages. She then sold the ground cinnamon to restaurants and bakeries. What was the weight of ground cinnamon in each package?
Answer:the answer is 0.3
Step-by-step explanation:
URGENT
The measure of one of the acute angles in a right triangle is 24. what is the measure of the other angle?
Answer:
do you have pictures and more measurements so i can solve the problem for you?
Step-by-step explanation:
Identify the two factors that were multiplied together to form the array of tiles. Then identify the product of the two factors. Use the variable x in your expressions.
Answer:
[tex]Terms: 3\ and\ x + 2[/tex]
[tex]Product = 3x + 6[/tex]
Step-by-step explanation:
See attachment for complete question.
From the attachment, there are 3 columns and 3 rows
The 3 columns represent the first factor
To get the second factor, we have to analyze the 3 rows in the attachment.
Notice that the first row is bigger than the other two rows.
This big row will be represented with variable x
Notice that the boxes in second row are smaller than the first row and the + sign is written on each of the boxes.
This is represented with + 1
Also, notice that the boxes in third row are smaller than the first row and the + sign is written on each of the boxes.
This is also represented with + 1
Hence, the expression for the rows is x + 1 + 1 = x + 2
The product is then calculated as:
[tex]Product = 3 * (x + 2)[/tex]
[tex]Product = 3 * x + 3*2[/tex]
[tex]Product = 3x + 6[/tex]
Determine if the function is even, odd, or neither.
Answer:
It is an even function.
f(t) = 2 cos πt
Thank you and please rate me as brainliest as it will help me to level up
Answer:
I think its odd as I guess.
55 pages in 25 minutes
Which lines have a y-intercept of 5? Check all that apply.
A: y=5x-1
B: 4x-8y=40
C: x-y=5
D: x-3y=15
E: 2x-y=10
F: 6x+4y=20
Answer:
F: 6x+4y=20
Step-by-step explanation:
Only line representing the equation 6x+4y=20 has y-intercept of 5.
The line that has the y-intercept = 5 is 6x + 4y = 20
What are intercepts?The points where a line crosses an axis are known as the x-intercept and the y-intercept, respectively.
The standard slope intercept form:
y = mx + b
Comparing the options A,C,D and E with standard form and none of the options have b = 5.
So these options are out.
Now the options B,
Simplify, y = x/2 - 5
Compare with slope intercept form, and this equation also does not have
the y intercept as 5.
Now option F;
simplify, 6x + 4y = 20
y = -3x/2 + 5
Comparing with standard form,
And b= 5
Therefore, The line that has the y-intercept = 5 is 6x + 4y = 20
To learn more about the intercepts;
https://brainly.com/question/14180189
#SPJ5
Slove by using elimination
3x+7y=27
-3x+y=21
Answer:
x = -5
y = 6
Step-by-step explanation:
3x + 7y = 27 --------------(I)
-3x + y = 21 -----------(II)
Add equation (I) & (II) and so x will be eliminated and we can find the value of y.
(I) 3x + 7y = 27
(II) -3x + y = 21 {add}
8y = 48
y = 48/8
y = 6
Plugin y = 6 in equation (I)
3x +7*6 = 27
3x + 42 = 27
3x = 27 - 42
3x = -15
x = -15/3
x = -5
Writing Linear Equations from Key Information slope = 3, y-intercept = −1
Answer:
y = 3x - 1
Step-by-step explanation:
John sells forty funnel cakes at the fair in five hours. How
many funnel cake did he sell per hour?
Answer:
John sold 8 funnel cakes in 1 hour
Step-by-step explanation:
Hope I helped
Answer:
An average of 8 funnel cakes an hour
Step-by-step explanation:
40/5=8 but we don't know if he sold the same amount every hour.
120% of __________ is 78
120% of 65 is 78.
This means that 120 times what equals 78.
120*65=78
Answer:
65
Step-by-step explanation:
The seniors on the student council bought a total of 36 plants to use in landscaping the front of the school. They bought some azaleas that cost $6
each and some lilles that cost $5 each. They spent a total of $196 on these plants. How many azaleas did the students buy?
Answer:
The students bought 16 azaleas plants.
Step-by-step explanation:
Given that:
Total plants bought by student council = 36
Cost of each azaleas plant = $6
Cost of each lily plant = $5
Total amount spent = $196
Let,
x be the number of azaleas
y be the number of lilies
x+y = 36 Eqn 1
6x+5y=196 Eqn 2
Multiplying Eqn 1 by 6
6(x+y=36)
6x+6y=216 Eqn 3
Subtracting Eqn 2 from Eqn 3
(6x+6y)-(6x+5y)=216-196
6x+6y-6x-5y=20
y=20
Putting y=20 in Eqn 1
x+20=36
x=36-20
x=16
Hence,
The students bought 16 azaleas plants.
8y+11= 6y + 11
solve for y
please help
Answer:
y = 0
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define
8y + 11 = 6y + 11
Step 2: Solve for y
Subtract 6y on both sides: 2y + 11 = 11Subtract 11 on both sides: 2y = 0Divide 2 on both sides: y = 0Answer:
Step-by-step explanation:
8y+11=6y+11
we have the same number in both sides, they will cancel out
8y-6y=0
2y=0
y=0 is the only solution
Two farmers sell peanuts. The table and the graph below represent the two farmers where f(x) is the cost in dollars for x pounds of peanuts. What is the difference in the rate of change for the two functions
Answer:
number 2
Step-by-step explanation:
Can people help me on this please I need it!!! It’s really important
Answer:
62
Step-by-step explanation:
The total of a triangle is 180
so 78+48 is 118
180-118=62
A plumber charges a one time charge of $65 plus an hourly rate, h in dollars.
The plumber worked at a customer's house for 5 hours and charged a total of $215.
What was the hourly rate (h) in dollars per hour?
Answer:
y = 25x + 40; $140
Step-by-step explanation:
I ONLY NEED THE ANSWER FOR C. THE OTHER TWO ARE CORRECT. PLEASE HELP :(
Answer:
1.2 I think sorry if I'm wrong double check to see
Step-by-step explanation:
This is what I thought of oof so sorry if it incorrect
M<2=12x+5 and m<7 4x+19 find m<2
The base of a right triangle is 2 meters greater than the height. If the area of the triangle is 100 m2, what are the dimensions of the base and the height?
Answer:
b = 15.2 m
h = 13.2 m
Step-by-step explanation:
The area of a right triangle is given by:
[tex] A = \frac{bh}{2} [/tex] (1)
Where:
b: is the base
h: is the height
If the base is 2 meters greater than the height we have:
[tex]b = h + 2[/tex] (2)
And if the area of the triangle is 100 m², the dimensions of the base can be found by entering equation (2) into (1):
[tex]100 m^{2} = \frac{(h + 2)*h}{2}[/tex]
[tex] 200 m^{2} = h^{2} + 2h [/tex]
[tex] h^{2} + 2h - 200 m^{2} = 0 [/tex]
By solving the above quadratic equation we have:
[tex] h = 13.2 m [/tex]
And by entering the above value into equation (2) we have:
[tex]b = 13.2 + 2 m = 15.2 m[/tex]
Therefore, the dimensions of the base and the height are 15.2 m and 13.2 m respectively.
I hope it helps you!
Write the point-slope form of the line that has a slope of -7 and passes through the point (10,4).
Answer:
y=10/4-7
Step-by-step explanation:
the sum of two numbers is 10 and their difference is 6
Ana mixed 1 cup of lemonade with 4 cups of cranberry juice to make her favorite punch. How much cranberry juice will she use for 5 cups of lemonade. PLEASE HELP ME ASAPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
20
Step-by-step explanation:
since for every 1 lemonade there is 4 cranberry you have 5 lemonade now so you need 4 cranberry for every one of the 5 lemonade, which gives you 20
GIVING BRAINLIEST PLZZ HELP ASAP
Answer:
D
Step-by-step explanation:
x and y go up at a constant rate (or you can say it has a CROC or constant rate of chacge) y going up 5 for every one x
with our equation being y = 5x + 5
hope this helps <3
Answer:
Step-by-step explanation:
It would be D because to know if its linear, x has to increase by 1 and y by a constant rate.
X increases by 1 and y increases by 5
I've attached a graph for you to see
If you have any further questions, don't be afraid to reach out! I hope this helps!