Answer:
6 + 3x = 5x -4
10 + 3x = 5x
2x = 10
x= 5
paki sabi nalang po kong mali :)
What is 1 + 1 im stuck on it and i cant figure it out.
its 2...
20 leterssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
Find the x coordinate of the vertex of the parabola sketched in the figure below ?
PLEASE HELP!
Answer:
Step-by-step explanation:
x-coordinate of vertex is 4
4g + 12 < 60 solve and graph
Answer:
g<12
Step-by-step explanation:
4g+12<60
Subtract 12 from both sides.
4g<60−12
Subtract 12 from 60 to get 48.
4g<48
Divide both sides by 4. Since 4 is positive, the inequality direction remains the same.
g<48/4
Divide 48 by 4 to get 12.
g<12
The voting method in which each voter votes for one candidate and the candidate receiving the most votes is declared the winner is called the ___ method
Write and solve an equation to find the value of x and the missing angle measures.
1.
2.
6x
(4 + 5x)
30°
(x + 2)
3.
Answer:
Step-by-step explanation:
1). Since, both the angles are vertically opposite angles,
Measure of both the angles will be same.
6x = 30
x = 5
2). Since, both the angles are the linear pair of angles,
(4 + 5x)° + (x + 2)° = 180°
6x + 6 = 180
6x = 180 - 6
x = [tex]\frac{174}{6}[/tex]
x = 29
Therefore, (4 + 5x)° = 4 + 5(29)
= 149°
And (x + 2)° = (29 + 2)
= 31°
3). Since, both the angles are linear pair of angles,
5x° + (3x + 12)° = 180°
8x + 12 = 180
8x = 180 - 12
x = [tex]\frac{168}{8}[/tex]
x = 21
Therefore, 5x° = 5(21)
= 105°
(3x + 12)° = 3(21) + 12
= 75°
For each recursively-defined sequence below, write the first few term. Then use the terms to write an explicit equation.
a. a_1 = 15
a_n+1 = a_n - 3
b. t(n+1) = 1/3*t(n)
t(1)= 108
Answer:
Step-by-step explanation:
a_1 = 15
a_2 = a_1 - 3
a_2 = 15 - 3
a_2 = 12
a_3 = a_2 - 3
a_3 = 12 - 3
a_3 = 9
a_4 = a_3 - 3
a_4 = 9 - 3
a_4 = 6
a_5 = 3
a_6 = 0 I'm leaving these last two to expand
a_n = a1 - (n - 1)*d
a_n = 15 - (n - 1)*3
a_n = 15 - 3n + 3
a_n = 18 - 3n
Example
a_6 = 18 - 3*6
a_6 = 0
Problem B
t(1) = 108
t(1 + 1) = 1/3 * 108
t(2) = 36
t(3) = 1/3 * t2
t(3) = 1/3 * 36
t(3) = 12
t(4) =1/3 (t(3))
t(4) = 1/3 * 12
t(4) = 4
t(5) = t4 / 3
t(5) = 4 / 3
t(5) = 1.3333333
So the explicit definition is
t(n) = 108 (1/3)^(n - 1) You could simplify this a little bit by realizing that 108 is made of three 3s.
t(n) = 4 * 3^3 * (1/3)^(n - 1)
t(n) = 4 * (1/3) ^ (n - 4)
Example
t(5) = 108 (1/3)^4
t(5) = 108(1/81)
t(5) = 1.3333333
And using the simplified formula, you get.
t(5) = 4 * (1/3)^1
t(5) = 1.333333 which is the same thing as the original result.
Answer:
see explanation
Step-by-step explanation:
(a)
Using the recursive rule and a₁ = 15 , then
a₂ = a₁ - 3 = 15 - 3 = 12
a₃ = a₂ - 3 = 12 - 3 = 9
a₄ = a₃ - 3 = 9 - 3 = 6
The sequence is 15, 12, 9, 6, ....
This is an arithmetic sequence with n th term ( explicit rule )
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 15 and d = - 3 , then
[tex]a_{n}[/tex] = 15 - 3(n - 1) = 15 - 3n + 3 = 18 - 3n
----------------------------------------------------------------------
(b)
Using the recursive rule and t₁ = 108 , then
t₂ = [tex]\frac{1}{3}[/tex] t₁ = [tex]\frac{1}{3}[/tex] × 108 = 36
t₃ = [tex]\frac{1}{3}[/tex] t₂ = [tex]\frac{1}{3}[/tex] × 36 = 12
t₄ = [tex]\frac{1}{3}[/tex] t₃ = [tex]\frac{1}{3}[/tex] × 12 = 4
The sequence is 108, 36, 12, 4, ......
This is a geometric sequence with n th term
[tex]t_{n}[/tex] = t₁[tex](r)^{n-1}[/tex]
where t₁ is the first term and r the common ratio
Here t₁ = 108 and r = [tex]\frac{1}{3}[/tex] , then
[tex]t_{n}[/tex] = 108 [tex](\frac{1}{3}) ^{n-1}[/tex]
write an expression that represents the area of only the red shaded region in terms of x
Answer:
(9 × 3x+7) - (5 × x+2)
Step-by-step explanation:
Red area
9 × 3x + 7
white area
5 × x+2
For each problem, select the best response.
(a) A marketing class designs two videos advertising an expensive Mercedes sports car. They test the videos by asking fellow students to view both (in random order) and say which makes them more likely to buy the car. Mercedes should be reluctant to agree that the video favored in this study will sell more cars because
A. results from students may not generalize to the older and richer customers who might buy a Mercedes.
B. this is an observational study, not an experiment.
C. the study used matched pairs design instead of a completely randomized design.
D. None of the above.
(b) Can changing diet reduce high blood pressure? Vegetarian diets and low-salt diets are both promising. Men with high blood pressure are assigned at random to one of four diets: (1) normal diet with unrestricted salt; (2) vegetarian with unrestricted salt (3) normal with restricted salt; and (4) vegetarian with restricted salt. This experiment has
A. one factor, the choice of diet.
B. two factors, normal/vegetarian diet and unrestricted/restricted salt.
C. four factors, the four diets being compared.
D. None of the above.
(c) The Nurses' Health Study has interviewed a sample of more than 100,000 female registered nurses every two years since 1976. The study finds that "light-to-moderate drinkers had a significantly lower risk of death than either nondrinkers or heavy drinkers. The Nursers' Health Study is
A. an experiment.
B. an observational study.
C. Can't tell without more information.
Answer:
1) Results from students may not generalize to the older and richer customers who might buy a Mercedes ( A )
2) Four factors, the four diets being compared. ( c )
3) An observational study ( c )
Step-by-step explanation:
Results from students may not generalize to the older and richer customers who might buy a Mercedes. This is because of the possibility of the use of convenience sampling by the marketing class who made the video. Four factors, the four diets being compared. this is because the diets and their effects on the men with high blood pressure is compared This is An observational study because it cannot be controlledThe table shows the lengths of some wooden boards Matthew finds in his garage.
The table is titled Board Lengths. The table has two columns and four rows. The first column is labeled Board. The second column is labeled Length. Board A, three and one half feet. Board B, forty-one inches. Board C, four feet. Board D, one and twenty-five hundredths yards.
Which board is the shortest?
A
B
C
D help ASAP right now!!!
Answer:
b is the answer of this question
please help, the answer i have picked is just a guess btw
Answer:
I D K buy hope you find the right answer
Step-by-step explanation:
Answer:
113.04in²it is the total and correct answer
Find the area of a rectangular field , if the length of the field is 80m and breadth is 45m
Answer:
3600m^2
Step-by-step explanation:
Area = length x width
Area = 80m x 45m
Area = 3600m^2
Answer:
3600m^2
Step-by-step explanation:
Area= length x width
A=80m x 45m
Area = 3600m^2
hope this helps ^^ (i wasn't sure what you meant by breadth tho)
The girls' volleyball has 10 seventh grade students and 7 sixth grade students. What is the ratio of sixth grade students to seventh grade students on the team?
10 : 17
7 : 17
10 : 7
7 : 10
Janice babysat 3 hours each night for 8 nights. She earned a total of $192 babysitting. What was her hourly rate?
A) $3 per hour
B) $8 per hour
C) $24 per hour
D) $192 per hour
Answer:
1) 7:10
2) $8 per hour
Step-by-step explanation:
Question 1
What we know:
- there are 10 seventh grade students
- there are 7 sixth grade students
Therefore, the ratio of sixth-grade students to seventh-grade students is 7:10.
Question 2
What we know:
- Janice babysat 3 hours each night
- Janice babysat for 8 nights
- she earned $192
First, we need to find the total number of hours that she babysat. Because she babysat for 3 hours each night for 8 nights, we can find this by multiplying 3 and 8:
3×8=24
Therefore, Janice babysat for 24 hours in total.
Because she earned a total of $192, divide 192 by 24 to find her hourly rate:
192÷24=8
Therefore, Janice has an hourly rate of $8 per hour.
I hope this helps!
4) If x=5, y= 2 and z = 1, what is the value of 2 + 2y + 10Z
Answer: 16
Step-by-step explanation: I did the equation, hope this helps :)
The lengths in cm, of the sides of a triangle are 3x - 5, 2x-1 and x+1
3x - 5
2x - 1
(a) Write down an expression, in terms of x, for the perimeter of the triangle
(2)
The perimeter of the triangle is 31 cm.
(b) Work out the value of x.
Answer:
a) p = 6x - 5
b) x = 6
Step-by-step explanation:
a) p = a + b + c
p = 3x - 5 + 2x - 1 + x + 1
p = 6x - 5
b) p = 6x - 5 =31
6x - 5 = 31
6x = 36
x = 6
Brian bought a computer
marked down from $380 to
$133. What is the discount,
as a percentage?
A:70%
B:60%
C:65%
D:75%
Answer:
Step-by-step explanation:
100(133-380)/380=-65%
So the discount was 65%
Marcus observed that 8 of the 20 games that he had bowled last week were over 180. What percent of his games were over 180?
Answer:
40%
Step-by-step explanation:
Ok so my brain is sorta not working but it said "hey! 20 divided by 2 is 10!"
So I was like ight and divided 80 by 2 to to get 40%.
Hope this helps.
Write a polynomial that represents the area of the sqaure
Answer:
4x² + 28x + 49
Step-by-step explanation:
(x + x + 7)²
(2x+7)(2x+7)
4x² + 28x + 49
what is the length of de
A. 2
B. 3
C. 4
D. 5
Answer:
DE=5
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
The weights of a pack of chewing gum for a certain brand have a mean of 47.1 grams and a standard deviation of
2.4 grams. What is the weight of a randomly selected pack of gum that has a z-score of 3.11?
ОООО
39.6 grams
44.7 grams
49.5 grams
54.6 grams
(If anyone is able to do my prob&stats class, with pay let me know! willing to pay up to $300)
Answer: B. 44.7
Step-by-step explanation: I believe it's the answer but I'm not sure.
A Z-score helps us to understand how far is the data from the mean. The correct option is D. The weight will be 54.6 grams.
What is Z-score?A Z-score helps us to understand how far is the data from the mean. It is a measure of how many times the data is above or below the mean. It is given by the formula,
Z = ( X - μ ) / σ
Where Z is the Z-score,
X is the data point,
μ is the mean and σ is the standard variable.
The weight of a randomly selected pack of gum has a z-score of 3.11. Therefore, The weight of this pack of gum is heavier than the mean weight by 3.11 standard deviations.
Z = ( X - μ ) / σ
3.11 X 2.4 = X - 47.1
X = 54.6 grams
Hence, the correct option is B.
Learn more about Z-score:
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PLEASE CLICK ON THIS IMAGE I NEED HELP
Answer:
4
Step-by-step explanation:
because
8÷2=4
16÷4=4
24÷6=4
32÷8=4
I need help ASAP will mark you the brainliest
Answer:
2
Step-by-step explanation:
can you please help me!!!! thank you
Answer:
V = J = 92
Step-by-step explanation:
The angles are the same on both shapes.
Michael canned 4,713 quarts of blueberries over the summer. By the end of the year he had used 1/3 of what he had canned. How many quarts of blueberries had he used?
Answer:
he used 1,571
Step-by-step explanation:
if you divide 4,713 by 3, you get 1,571 and that amount is equal to just 1/3 of the amount.
Jimmy ate 1/3 of his sandwich at lunch. He ate another 2/3 of the sandwich at dinner. How much of the sandwich did jimmy eat in all.
Answer:
Step-by-step explanation:
1/3+2/3=3/3=1
So he ate the whole sandwich.
Answer:
He ate the entire sandwich.
Step-by-step explanation:
1/3 + 2/3 = 1
Mark me as brainliest pls.
The solution to 8x = 32 is x = __.
[tex]\huge\text{Hey there!}[/tex]!
[tex]\large\text{8x = 32}[/tex]
[tex]\large\text{DIVIDE 8 to BOTH SIDES}[/tex]
[tex]\mathsf{\dfrac{8x}{8} = \dfrac{32}{8}}[/tex]
[tex]\large\text{Cancel out: } \mathsf{\dfrac{8}{8}}\large\text{ because that gives you } \mathsf{1}[/tex]
[tex]\large\text{Keep: }\mathsf{\dfrac{32}{8}}\large\text{ because it helps us solve for }\mathsf{x}[/tex]
[tex]\mathsf{\dfrac{32}{2}\ = x \ or\ x = \dfrac{32}{8}}[/tex]
[tex]\mathsf{\dfrac{32}{8} = 32\div 8 \rightarrow \bf 4}[/tex]
[tex]\boxed{\boxed{\large\text{Answer: \bf x = 4}}}\huge\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
The proportion of twins born in a town is p = 0.12. Suppose we randomly select 100 women from this town who give birth in the next year.
Which of the following is the correct calculation and interpretation of the standard deviation of the sampling distribution of p hat ?
Sigma Subscript p hat Baseline = 0.001 In SRSs of size 100, the sample proportion of women in this town giving birth to twins typically varies 0.001 from the true proportion, p = 0.12.
Sigma Subscript p hat Baseline = 0.032 In SRSs of size 100, the sample proportion of women in this town giving birth to twins typically varies 0.032 from the true proportion, p = 0.12.
Sigma Subscript p hat Baseline = 0.035 In SRSs of size 100, the sample proportion of women in this town giving birth to twins typically varies 0.035 from the true proportion, p = 0.12.
Sigma Subscript p hat Baseline = 0.106 In SRSs of size 100, the sample proportion of women in this town giving birth to twins typically varies 0.106 from the true proportion, p = 0.12.
Answer:
B. Sigma Subscript p hat Baseline = 0.032 In SRSs of size 100, the sample proportion of women in this town giving birth to twins typically varies 0.032 from the true proportion, p = 0.12.
Step-by-step explanation:
took the quiz
The correct calculation and interpretation of the standard deviation of the sampling distribution of p hat is the sample proportion of women in this town giving birth to twins typically varies 0.032 from the true proportion, 0.12.
What is random sample?Random sample is the way to choose a number or sample in such a manner that each of the sample of the group has an equal probability to be chosen.
The standard deviation of the sampling distribution of p hat is given as,
[tex]\sigma_{ \hat p}=\sqrt\dfrac{p(1-p)}{n}[/tex]
Here, p is the proportion and n is the number of sample.
The proportion of twins born in a town is p = 0.12. Now there is randomly select 100 women from this town who give birth in the next year.
[tex]\sigma_{ \hat p}=\sqrt{\dfrac{0.12(1-0.12)}{100}}\\\sigma_{ \hat p}=\sqrt{0.001056}\\\sigma_{ \hat p}=0.032[/tex]
Thus, the correct calculation and interpretation of the standard deviation of the sampling distribution of p hat is the sample proportion of women in this town giving birth to twins typically varies 0.032 from the true proportion, 0.12.
Learn more about the random sample here;
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plz help, Randy is fencing off a semi-circular region in his backyard against a wall. The semi-circular region has a diameter of 24 feet. The fencing will go along the arc only. How much fencing does Randy need?
Answer:
[tex]Fence = 41.408ft[/tex]
Step-by-step explanation:
Given
[tex]d = 24ft[/tex]
Required
Determine the length of the wall
First, we calculate the circumference (C) of the semi-circle
[tex]C =\pi d[/tex]
[tex]C = 3.142 * 24[/tex]
[tex]C = 75.408[/tex]
The length of the fence is calculated by subtracting the diameter from the circumference:
[tex]Fence = C - d[/tex]
[tex]Fence = 75.408ft - 24ft[/tex]
[tex]Fence = 41.408ft[/tex]
il 1) You have four-sixths yards of pipe. How many pieces can you cut the pipe into if each piece is one-ninth yard?
Answer:
[tex] \frac{4}{6} \div \frac{1}{9} = 6 [/tex]
it's division
Answer:
just answering
Step-by-step explanation:
bc i want point
3
4
5
Lily has 8 dog toys that are red. One third of all her dog toys are red.
How many dog toys does Lily have?
Complete the explanation.
First, draw
circles to show
equal parts.
Next, draw
toys in
circle since
circle represents the number of red toys.
Last, draw
toys in each of the remaining circles. Find the total number of toys.
So, Lily has
dog toys.
Answer:
She has 24 dog toys
Step-by-step explanation:
8x3=24
PLEASE HELP TIMED TEST
How many more unit tiles must be added to the function
f(x)=x^2-6x+1 in order to complete the square?
0 1
06
o 8
O 9
Answer:
8
Step-by-step explanation:
How many more unit tiles must be added to the function
f(x)=x²-6x+1 in order to complete the square?
The easier, but usually not viable way: If we look at how many more tiles need to be added, we can see that each smaller sides is 1 unit. Thus, we need 8 more tiles to complete the square.
However, this is just an educated guess. If we didn't have a diagram or it was drawn badly, we would be wrong. Let's solve it algebraically.
Note:
completing the square is changing a quadratic equation (the format is
ax² + bx + c = 0)into a(x - d)² + e = 0. (an example of this is (a + b)² or (a - b)²)
This may be confusing, but look at an example:
x² + 4x + 4 = (x + 2)²
Also note that, (a - b)² = a² - 2ab + b²
If we substitute a = x, then we get:
x² - 2bx + b².
Now, all we need to do is find b.
If we know that 2bx = 6x, then we can divide both sides by 2x and get an answer of
2bx = 6x
b = 3.
Thus, b is 3.
Remember, to complete the square, we need to find b², which is
3² = 9.
Then, because they already give us a "1", we just need to add 9-1 = 8 more units.
Just in case, let's check the answer.
If we add 8 to the problem, we get:
x² - 6x + 1 + 8 =
x² - 6x + 9
As you can see, this follows the a² - 2ab + b² format, so we can factor it.
x² - 6x + 9 = (x - 3)²
This is a completed square. Thus, we need to add 8 more unit tiles.
We need to add 9 to the expression to complete the square.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example: so
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
To complete the square for the given function f(x) = x² - 6x + 1, we need to add a constant term that will make the expression a perfect square trinomial.
We can find this constant term by taking half of the coefficient of x and squaring it.
Half of -6 is -3, and (-3)² = 9.
So we need to add 9 to the expression:
f(x) = x² - 6x + 1 + 9
= (x - 3)² + 1
This expression is now a perfect square trinomial.
Thus,
We need to add 9 to the expression to complete the square.
Learn more about expressions here:
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