Answers
Answer:
last option: answer is 'x'
Step-by-step explanation:
(3x + 1 - 1) / 3 = 3x / 3 = x
Related Questions
Which of the following sequences is an arithmetic sequence? Select all correct answers.
Select all that apply:
1,2,3,4,5,6,…
5,0,−5,−10,−5,0,…
−4,−6,−8,−10,−8,−6,…
3,0,−3,−6,−9,−12,…
6,5,4,3,2,1,…
Answers
Answer:
1st, 4th and 5th are in arithmetic sequence.
Answer:
a) 1,2,3,4,5,6............
d) 3,0, -3 ,-6,-9,-12.............
e) 6,5,4,3,2,1...........
are arithmetic sequence
Step-by-step explanation:
Arithmetic sequence is series of numbers that the difference of consecutive terms is constant
a) 1, 2 , 3 , 4 , 5 , 6...........
Common difference = 1
d) 3,0, -3 ,-6,-9,-12.............
Common difference = second term - first term
= 0 - 3 = -3
e) 6,5,4,3,2,1...........
Common difference = 5 - 6 = - 1
Sue needs 1/3 of a cup of flour for 1/4 of a batch of cookies. How much flour does she need for a whole batch of cookies?
***WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER***
Answers
Answer:
1 1/3 cups of flour
Step-by-step explanation:
1/3 x 4 = 4/3 = 1 1/3
Hope that helps! :)
-Aphrodite
The following 5 questions are based on this information: An economist claims that average weekly food expenditure of households in City 1 is more than that of households in City 2. She surveys 35 households in City 1 and obtains an average weekly food expenditure of $164. A sample of 30 households in City 2 yields an average weekly expenditure of $159. Historical data reveals that the population standard deviation for City 1 and City 2 are $12.50 and $9.25, respectively.
Required:
At the 5% significance level, is the economist claim supported by the data?
Answers
Answer:
>> Null hypothesis; H0: μ1 - μ2 ≥ 0
Null hypothesis; Ha: μ1 - μ2 < 0
>> z = 1.85
>> p-value = 0.03
>> there is evidence sufficient to reject the claim that average weekly food expenditure of households in City 1 is more than that of households in City 2.
The economist claim is not supported by data.
Step-by-step explanation:
We are given;
Sample mean of city 1; x1¯ = 164
Sample mean of city 2; x2¯ = 159
Sample size of city 1; n1 = 35
Sample size of city 2; n2 = 30
Standard deviation of city 1; σ1 = 12.5
Standard deviation of city 2; σ2 = 9.25
Let's define the hypotheses;
Null hypothesis; H0: μ1 - μ2 ≥ 0
Null hypothesis; Ha: μ1 - μ2 < 0
Test statistic which is the z-score Formula between 2 mean is;
z = ((x1¯ - x2¯) - 0)/√((σ1)²/n1) + ((σ2)²/n2))
z = (164 - 159 - 0)/√((12.5²/35) + (9.25²/30))
z = 5/2.705
z = 1.85
From online p-value from z-score calculator attached, using z = 1.85, one tailed, significance value of 0.05, we have;
p-value = 0.03
The p-value is less than the significance value, and so we will reject the null hypothesis and conclude that there is evidence sufficient to reject the claim that average weekly food expenditure of households in City 1 is more than that of households in City 2.
7-3 Multiplying Binomials
Write a polynomial in standard form for the volume of the rectangular prism shown.
5x+1
3x - 4
X+2
Answers
Answer:
Step-by-step explanation:
Use FOIL method.First multiply (5x + 1) and (3x - 4). Then multiply (15x² - 17x - 4) by (x +2)
Volume of the rectangular prism = length *width * height
= (5x + 1) (3x -4)(x +2)
= [ 5x*3x + 5x*(-4) + 1*3x + 1*(-4) ] (x + 2)
= [15x² - 20x + 3x - 4] (x +2) {Combine like terms}
= [15x² - 17x - 4] (x + 2)
=[15x² -17x - 4]*(x) + [15x² - 17x -4]*2
= [15x²*x - 17x*x - 4*x ]+ 15x²*2 - 17x *2 - 4*2
= 15x³ - 17x² - 4x + 30x² - 34x - 8
= 15x³ - 17x² + 30x² - 4x - 34x - 8 {Combine like terms}
= 15x³ + 13x² - 38x - 8
The sum of −7 times a number and 8 times the sum of the number and 1 is the same as the number minus 7.
Answers
Answer:
n has no value.
There is no solution to this equation
Step-by-step explanation:
let n be the number
In pieces:
sum of the number and 1: (n + 1)
8 times the sum: 8(n + 1)
-7 times a number: -7n
sum of -7 times and...: -7n + 8(n + 1)
number minus 7: n - 7
the same as: =
All together:
-7n + 8(n + 1) = n - 7
-7n + 8(n+1)=n-7
-7n + 8n+8=n-7
0=-15
50 points) please help! no links, brainliest, extra points.
I understand if you need points, you can go to my old questions and answer them for points, please only answer if your 100% sure you're correct. I've redone this over 20 times, asked over 50, and failed all those times. thank uu.
Any non-integer answers in this problem should be entered as decimals rounded to the tenth.
Duncan surveyed 10 people to see how many hours per week they exercise. The results are listed below.
18, 13, 20, 14, 12, 6, 11, 5, 15, 10
Use the data set to complete the sentences.
The interquartile range of the data set is _____.
The mean absolute deviation of the data set is _____.
Answers
Step-by-step explanation:
interquartile range = 5
.
The mean absolute deviation = 3.6
.
hope this gonna help !
Answer:
range = 15
IQR= 5
mean absolute deviation = 3.6
1st quartile = 10
median= 12.5
3rd quartile = 15
Ken flips a coin and draws a card. Is this a independent or dependent event?
Answers
The function f is defined by f(x) = 5x2 + 2x + 5. What is the value of f(2)?
Answers
Answer:
[tex]f(x) = 5 {x}^{2} + 2x + 5 \\ when \: x = 2 \\ f(2) = 5( {2})^{2} + 2(2) + 5 \\f(2) = 29[/tex]
If you know the area of a circle, how can you find its radius? Use the drop-down menus to explain your answer. Choose.. the area by n, and then take the Choose... of the answer. Choose
1 choose: multiply or Divide
2 Choose: square or square not
Answers
Answer:
This is the answer!!!
Step-by-step explanation:
what is 20 x 3-4 + 80 / 988 + 444444 x 343
Answers
please help me i will mark brainliest! :D
Answers
Answer:
19.50
Step-by-step explanation:
If the scarf is 25% off, you have to pay 100% -25% = 75%
26 *75%
26 *.75
19.5
I'll try to give Brainlyest please help!!
Answers
16/2= 8
Answer:
D. 2r = 16
Step-by-step explanation:
r/2 = 16, r=32
8= r/8, r=64
4r=16, r=4
2r=16
/2 /2
r=8
If you buy a motorcycle for $12,500 in 2015 and it depreciates (shrinks) in value by 15.5% every year, how much will it be worth in 2020?
A) $10,562.50
B) $1718.33
C) $6732.90
D) $5385.10
Answers
Answer:
D) $5385.10
Step-by-step explanation:
Exponential equation of decay:
The exponential equation for the decay of an amount after t years is given by:
[tex]A(t) = A(0)(1-r)^t[/tex]
In which A(0) is the initial amount and r is the decay rate, as a decimal.
If you buy a motorcycle for $12,500 in 2015 and it depreciates (shrinks) in value by 15.5% every year
This means that [tex]A(0) = 12500, r = 0.155[/tex]
So
[tex]A(t) = A(0)(1-r)^t[/tex]
[tex]A(t) = 12500(1-0.155)^t[/tex]
[tex]A(t) = 12500(0.845)^t[/tex]
How much will it be worth in 2020?
2020 is 2020 - 2015 = 5 years after 2015, so this is A(5). So
[tex]A(5) = 12500(0.845)^5 = 5385.10[/tex]
The correct answer is given by option D.
Igor, whose eye height is 4.5 ft., wishes to find the height of an oak tree out in front of his castle. He places a mirror on the ground between himself and the tree. He is now 5.5 feet away from the center of the mirror and the mirrors is 70 feet from the tree. What is the height of the oak tree in front of Igor´s castle?
Please this is due in 15 minutes
Answers
explanation : take 5.5 and add it from 6.7
hi!
which equation is graphed here?
Answers
Answer:
The equation would be y = -3/2x - 1
Step-by-step explanation:
The slope is -3/2 and the y-intercept is -1.
Let f(x)=3(12)x+1. Which is equal to f(1)?
Answers
Answer:
just substitute the value of x as 1
f(x)=3(12)x+1
f(1)=3(12)(1)+1
f(1)=3(12)(1)+1
f(1)=36+1
f(1)=37
Julie had 3 1/3 cups of flour. A brownie recipe called for 2 2/3 cups of flour. If Julie made one batch of brownies, how much flour did she have left over?
Answers
Answer:
2/3
Step-by-step explanation:
3 1/3-2 2/3= 2/3
On the day of a child's birth, a parent deposits $30,000 in a trust fund that pays 3% interest, compounded continuously. Determine the balance in this account on the child's 24th birthday.
Answers
Answer:
3/100 × 30000 is the answer to your question.
Tracy is trying to justify a step in her paragraph proof. What is the property that she should use?
ABAB
1)Transitive Property of
Congruence
2)Symmetric Property of
Congruence
3)Reflexive Property of Congruence
4)Equality of Congruence Property
Answers
Answer:
The reflexive property of congruence
Step-by-step explanation:
This property says that an object is congruent to itself.
PLEASE HELP !! ILL GIVE BRAINLIEST !!
Answers
Answer:
-8x+8=-6x+20 and x= -6
Step-by-step explanation:
Reason to equation:
This image shows alternative interior angles.
Alternative interior angles are congruent to each other.
How to find x:
-8x+8=-6x+20
We subtract 8 from both sides
-8x=-6x+12
We add 6x to both sides
-2x=12
We divided -2 from both sides
-2x/-2x = 12/2
Leaving us with x=-6
the landscaper uses 4 bags of topsoil to cover 3/8 of the garden. how many bags of topsoil will he need to buy to cover the whole garden
Answers
PLEASE HELP !! ILL GIVE BRAINLIEST !! Ohh
Answers
Answer: Angle VUW and QRP are alternate exterior angles.
They are both exterior and are on alternate sides of the transversal.
Hope this helps!
Hw
EXERCISE solve the following problems
? Rhonda had to draw the lines of symmetry in the parallelogram below
She drew this:
Was she correct?
Yes No
shape
Explain your answer
How many lines of symmetry are
in the 5-pointed star to the right?
raw the lines of symmetry
Answers
hpps|hskao.con
Solve for x and y:
Ty– 5x = 45
x = 8 - 2y
O x = 5, y = 10
O x = 5, y = -2
x = -2, y = 5
O x = 4, y = 2
Answers
Answer:
x = -2
y = 5
Step-by-step explanation:
7y - 5x = 45 -------------------(I)
x = 8 - 2y -----------------------(II)
Substitute x = 8 - 2y in equation (II)
7y - 5(8-2y) = 45
7y + 8 *(-5) - 2y*(-5) = 45
7y - 40 + 10y = 45
17y - 40 = 45
17y = 45 + 40
17y = 85
y = 85/17
y = 5
Plugin y = 5 in equation (II)
x = 8 - 2*5
x = 8 - 10
x = -2
Which expressions are equivalent to the given expression?v252
Answers
Answer:
a and b
Step-by-step explanation:
Please help will give brainliest!
Answers
Answer:
Yes, Yes, No, Yes.
Step-by-step explanation:
2/5 as a decimal = 0.4
4 ÷ 0.4 = 10
1 is correct.
2 x 10 = 20
2 is correct.
6 x 10 = 60
3 is incorrect.
10 ÷ 2 = 5
4 is correct.
Need help only on 9 and11 thank you don’t know really how to do
Answers
غف8ىرف4-
ف8غ4ى0ض8رص90
a student needs to fill a 12 gallon fish tank. The student has a container that holds 1/3 gallon of water. how many times will the student need to fill the container with water in order to fill the fish tank completely
Answers
Explanation:
12 divided by 1/3 is 36
You can trust this answer
Goodluck!
What is the difference/ ratio of the numbers 6.25, 25, 100, 400,
Answers
The pattern in the number sequence is that every number is 4 times larger than the one before it. In ratio form, 1:4 would be the representation of the pattern.
Transformations of Functions (A1)
The graph of y=f(x) is the solid black graph below. Which function represents the dotted graph?
A: y=−f(x+1)
B: y=−f(x−1)
C: y=−f(x)+1
D: y=−f(x)−1
Answers
Answer:
i think the answer is B, good luck
Answer:
c i do believe good luck with the answer