Answer:
sorry need pionts
Step-by-step explanation:
What is the equation of the following line? Be sure to scroll down first to see
all answer options.
10
(0,0)
- 10
10
(3,-9)
-10
y=-3x is the equation of the line passing through the points (0, 0) and (3, -9).
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
We need to find equation of line passing through (0, 0) and (3, -9)
Slope = -9-0/3
=-3
Now let us find the y intercept
0=-3(0)+b
b=0
So equation is y=-3x
Hence, y=-3x is the equation of the line passing through the points (0, 0) and (3, -9).
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You bought a shirt with the price of $135.50, and the sale tax rate is 8.25% ___Find the sale tax
Answer:
tax is 11.50 tax and price is 147
Step-by-step explanation:
you would do 135.50 times 8.25% to find the tax which is estimated to $11.50 if you wanted to find the tax and the price you do $135.50 plus $11.50 which is $147
solve the quadratic equation by completing the square. x^2-10x+26=8
Answer:
can you please re- write your equation
Parte de Cálculo: En cada una de las siguientes proporciones, utilizar regla de tres para determinar el valor desconocido
x/5 = 8/10
8/12 = 2/x
15/3 = x/2
x/6 = 6/12
x/8 = 4/2
10/2 = x/7
Answer:
x = 4
x = 3
x = 10
x = 3
x = 16
x = 35
Step-by-step explanation:
[tex]\frac{x}{5} :\frac{8}{10}[/tex]
x · 10 = 5 · 8
10x = 40
10x ÷ 10 = 40 ÷ 10
x = 4
[tex]\frac{8}{12} :\frac{2}{x}[/tex]
x · 8 = 12 · 2
8x = 24
8x ÷ 8 = 24 ÷ 8
x = 3
[tex]\frac{15}{3} :\frac{x}{2}[/tex]
x · 3 = 15 · 2
3x = 30
3x ÷ 3 = 30 ÷ 3
x = 10
[tex]\frac{x}{6}:\frac{6}{12}[/tex]
x · 12 = 6 · 6
12x = 36
12x ÷ 12 = 36 ÷ 12
x = 3
[tex]\frac{x}{8} :\frac{4}{2}[/tex]
x · 2 = 8 · 4
2x = 32
2x ÷ 2 = 32 ÷ 2
x = 16
[tex]\frac{10}{2} :\frac{x}{7}[/tex]
x · 2 = 10 · 7
2x = 70
2x ÷ 2 = 70 ÷ 2
x = 35
In a class of p students, the average (arithmetic mean) of the test scores is 70.
In another class of n students, the average of the scores for the same test is 92.
When the scores of the two classes are combined, the average of the test scores is 86.
What is the value of p/n?"
Answer:
[tex]\frac{3}{8}[/tex]
Step-by-step explanation:
The average of a set of [tex]n[/tex] values is equal to the sum of all values in that set divided by [tex]n[/tex].
Conceptually, if [tex]p=n[/tex], the average should the mean of 70 and 92, which is 81. Since the combined mean is actually 86, we know that [tex]n>p[/tex] (just something to keep in the back of your mind).
To solve, write an equation using the definition of arithmetic mean (refer to the first sentence in the answer):
[tex]\frac{70p+92n}{p+n}=86,\\70p+92n=86(p+n),\\70p+92n=86p+86n,\\6n=16p,\\\frac{p}{n}=\frac{6}{16}=\boxed{\frac{3}{8}}[/tex]
Ill give brainliest
Answer:
is 4 an option?
Step-by-step explanation:
I think it is 4
Round 103.246 to the nearest hundredth, tenth, unit, ten and hundred.
103.246 rounded to the nearest hundredth is I.
Answer:
Step-by-step explanation:
Hundredth: This is an answer with 2 decimal places on the right. 103.25
Tenth: Answer to 1 place to the right: 103.2
Ten: 100: the zero does not change. You could use scientific notation 1.0*10^2
Unit: 103
hundred: 100
k+1/2 =4 solve for the variable
Answer:
k+1/2 =4
subtract 1/2 from both sides
= k = 3.5 or 3 1/2
Answer:3.5
Step-by-step explanation:
Marvin's Tree Service purchased several spruce tree saplings.
The heights of the saplings are shown in the table. Which line plot represents the data correctly?
A data set titled
A.
A line plot titled “Heights of Tree Saplings” shows a number line labeled “Height in inches” from 26 to 28 in intervals of one fourth. 26 and one half has 3 dots. 26 and three fourths has 3 dots. 27 has 2 dots. 27 and one fourth has 5 dots. 27 and one half has 6 dots. 27 and three fourths has 2 dots.
B.
A line plot titled “Heights of Tree Saplings” shows a number line labeled “Height in inches” from 26 to 28 in intervals of one fourth. 26 and one half has 3 dots. 26 and three fourths has 3 dots. 27 has 2 dots. 27 and one fourth has 3 dots. 27 and one half has 6 dots. 27 and three fourths has 2 dots.
C.
A line plot titled “Heights of Tree Saplings” shows a number line labeled “Height in inches” from 26 to 28 in intervals of one fourth. 26 and one half has 3 dots. 26 and three fourths has 3 dots. 27 has 2 dots. 27 and one fourth has 4 dots. 27 and one half has 6 dots. 27 and three fourths has 2 dots.
D.
A line plot titled “Heights of Tree Saplings” shows a number line labeled “Height in inches” from 26 to 28 in intervals of one fourth. 26 and one fourth has 1 dot. 26 and one half has 3 dots. 26 and three fourths has 3 dots. 27 has 2 dots. 27 and one fourth has 4 dots. 27 and one half has 6 dots. 27 and three fourths has 2 dots.
Answer:
B
Step-by-step explanation:
How many 1234567890 degrees? - remove question
Help me out please???
9514 1404 393
Answer:
2 < x < 15
Step-by-step explanation:
The triangle inequality requires all of ...
(x +11) +(2x +10) > (5x -9) ⇒ 30 > 2x
(2x +10) +(5x -9) > (x +11) ⇒ 6x > 10
(5x -9) +(x +11) > (2x +10) ⇒ 4x > 8
The solutions to these are ...
x < 15
x > 5/3
x > 2
So, the final requirement that has x satisfying all of these is ...
2 < x < 15
What is the slope of the line graphed below?
Answer:
2/3
Step-by-step explanation:
rise over run
The lower the standard error: Multiple Choice the more precisely the parameter estimates the true values. the less confident the manager can be that the parameter estimates reflect the true values. the less precisely the parameter estimates the true values. the more confident the manager can be that the parameter estimates reflect the true values.
Answer:
The more confident the manager can be that the parameter estimates reflect the true values.
Step-by-step explanation:
Standard error:
The standard error is a parameter that is direct proportional to the margin of error of a confidence interval, that is, the higher the standard error, the higher the margin of error of the confidence interval.
A lower margin of error leads to a more precise interval, thus, a lower standard error will also mean a higher confidence for the estimate, and thus, the correct option is:
The more confident the manager can be that the parameter estimates reflect the true values.
In the figure shown below, m 2C = 40° and AB = 8. Which equation could be used to find x?
A
8
400
BO
Х
с
Answer:
[tex]x = 8\tan(50)[/tex]
Step-by-step explanation:
Given
The attached triangle
Required
Find x
To find x, we make use of the following trigonometry ratio;
[tex]\tan(\theta) = \frac{Opposite}{Adjacent}[/tex]
So, we have:
[tex]\tan(50) = \frac{x}{8}[/tex]
Make x the subject
[tex]x = 8\tan(50)[/tex]
The data below shows the grams of fat for a variety of snacks. Morris wants to calculate the standard error of the sample mean for this set of data. Snack Grams of Fat Snack 1 9 Snack 2 13 Snack 3 21 Snack 4 30 Snack 5 31 Snack 6 31 Snack 7 34 Snack 8 25 Snack 9 28 Snack 10 20 What is the standard error for this set of data
Answer:
the standard error of data set is 2.628
Step-by-step explanation:
Given the data in the question;
set;
x = 9, 13, 21, 30, 31, 31, 34, 25, 28, 20
To get the standard of Error for this data set, we use the formual
S.E = s / √n
First we determine the mean average;
Mean x' = ∑x / n = ( 9 + 13 + 21 + 30 + 31 + 31 + 34 + 25 + 28 + 20 ) / 10
x' = 242 / 10
Mean x' = 24.2
Next we find the standard deviation s:
x (x-x')²
9 231.04
13 125.44
21 10.24
30 33.64
31 46.24
31 46.24
34 96.04
25 0.64
28 14.44
20 17.64
Total ∑(x-x')² = 621.6
so Variance = ∑(x-x')² / (n-1) = 621.6 / ( 10 - 1 ) = 621.6 / 9
Variance = 69.0667
Standard deviation S = √Variance
Standard deviation S = √69.0667
Standard deviation S = 8.3106
So we substitute into our formula to get the standard of error;
S.E = 8.3106 / √10
S.E = 2.628
Therefore, the standard error of data set is 2.628
Answer:
2.63
Step-by-step explanation:
It is fuzzy but please help
Answer:
13 x 12 x 11 = 1716
A train traveled for T = 2.0 hours at a constant speed of R = 36 miles per hour. Use the formula D = R · T to find the total distance the train traveled (in miles). Do not include the units in your answer.
Answer: T=1700
Step-by-step explanation:
the sum of two numbers is 37 and the greater number is 5 less than twice the Lesser number find the positive intergers
Answer:
x = 14
y = 23
Step-by-step explanation:
x = first number
y = second and greater number
x + y = 37 ⇒ y = 37 - x
y + 5 = 2x
Substitution:
(37 - x) + 5 = 2x
42 - x = 2x
3x = 42
x = 14
y = 37 - (14)
y = 23
You buy halibut at 28 per pound. One portion of seared halibut requires 6 ounces of halibut. How much dose the halibut for one portion cost?
Answer:
4.6
Step-by-step explanation:
yes
The average age of 6 men is 35 years and
the average age of four of them is 32 years.
Find the ages of the remaining two men if
one is 3 years older than the other.
Answer:
39.50
42.50
Step-by-step explanation:
Age of the 2 men = sum of the ages of the 6 men - sum of the ages of the 4 men
Average = sum of ages / total number of men
35 = sum of ages / 6
sum of ages = 35 x6 = 210
32 = sum of ages / 4
32 x 4 = sum of ages
128
210 - 128 = 82
age of the younger man = x
age of the older man = 3 + x
x + 3 + x = 82
2x + 3 = 82
2x = 82 - 3
2x = 79
x = 79/2 = 39.5
older man = 39.5 + 3 = 42.50
use the diagram to write members A U B
Which expression represents the following statement? The quotient of 16 and 4 times 7 less than 11. (4 points)
Answer:
16/ 4 (11-7)
Step-by-step explanation:
The phrase "quotient" tells us that there is division involved. The phrase "times" tells us that there is multiplication involved. The phrase "less" tells us that there is subtraction involved. Using these terminologies and clues, you can basically put together the equation 16/ 4 (11-7).
PLEASE HELP ME I DOnT KNOW THIS
Answer:
y=25*2ˣ.
Step-by-step explanation:
no details.
The manager of a pizza chain in Albuquerque, New Mexico, wants to determine the average size of their advertised 13-inch pizzas. She takes a random sample of 37 pizzas and records their mean and standard deviation as 13.50 inches and 1.90 inches, respectively. She subsequently computes the 95% confidence interval of the mean size of all pizzas as [12.89, 14.11]. However, she finds this interval to be too broad to implement quality control and decides to reestimate the mean based on a bigger sample. Using the standard deviation estimate of 1.90 from her earlier analysis, how large a sample must she take if she wants the margin of error to be under 0.5 inch
Answer:
She must take a sample of 56.
Step-by-step explanation:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1 - 0.95}{2} = 0.025[/tex]
Now, we have to find z in the Z-table as such z has a p-value of [tex]1 - \alpha[/tex].
That is z with a pvalue of [tex]1 - 0.025 = 0.975[/tex], so Z = 1.96.
Now, find the margin of error M as such
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.
Standard deviation estimate of 1.90
This means that [tex]\sigma = 1.9[/tex]
Wow large a sample must she take if she wants the margin of error to be under 0.5 inch?
This is n for which M = 0.5. So
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
[tex]0.5 = 1.96\frac{1.9}{\sqrt{n}}[/tex]
[tex]0.5\sqrt{n} = 1.96*1.9[/tex]
[tex]\sqrt{n} = \frac{1.96*1.9}{0.5}[/tex]
[tex](\sqrt{n})^2 = (\frac{1.96*1.9}{0.5})^2[/tex]
[tex]n = 55.5[/tex]
Rounding up:
She must take a sample of 56.
Dena borrowed $75,000 to buy a used car. The credit union charged 9% simple interest per year. She paid $2,025 in interest. For what period of time did she borrow the money?
Whats the...
Principal_____
Rate____
Intrest_____
anyone know the missing angle ?
Answer:48.013
Step-by-step explanation: just found it
The school cafeteria has 500 water bottles in stock and sells a total of 60 water bottles per day. Write a function rule to represent this situation using w for the total amount of water bottles in stock at the end of d days
Answer:
W=500-60d
Step-by-step explanation:
W=the remain water bottles
500=total water bottles
60water bottles times d=total water bottles at the end of days
If the school cafeteria has 500 water bottles in stock and sells a total of 60 water bottles per day, the function rule can be expressed as w = 500 - 60d
To write a function rule representing the given situation, we can use the variables w and d, where w represents the total number of water bottles in stock and d represents the number of days.
Initially, the cafeteria has 500 water bottles in stock. Every day, they sell 60 water bottles. So, at the end of each day, the total number of water bottles in stock decreases by 60.
Therefore, the function rule can be expressed as:
w = 500 - 60d
Here, 500 represents the initial number of water bottles in stock, and 60d represents the number of water bottles sold over d days, with d being the input variable.
This function rule calculates the remaining number of water bottles in stock (w) at the end of any given number of days (d), taking into account the initial stock of 500 and the daily sales of 60 bottles.
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Find all Values of b that will make the polynomial a perfect square trinomial.
25z^2+bz+36
Please write out how to do this so I can see the steps of what I am doing wrong. thank you!
Answer:
There are two solutions for [tex]b[/tex]: [tex]b = + 30\cdot z[/tex], [tex]b = -30\cdot z[/tex]
Step-by-step explanation:
By Algebra, we know that a polynomial is a perfect square trinomial if it is of the form:
[tex]a^{2} + 2\cdot a \cdot c + c^{2} = (a + c)^{2}[/tex] (1)
By direct comparison, we have the following system:
[tex]a^{2} = 25\cdot z^{2}[/tex], [tex]c^{2} = 36[/tex], [tex]2\cdot a \cdot c = b[/tex].
There are two possible solutions for [tex]b[/tex]:
1) [tex]a = \pm 5\cdot z[/tex], [tex]c = \pm 6[/tex], [tex]b = + 30\cdot z[/tex]
2) [tex]a = \pm 5\cdot z[/tex], [tex]c = \mp 6[/tex], [tex]b = -30\cdot z[/tex]
−5x−1=
\,\,-2x+14
−2x+14
Answer:
yeaa this is hard but i will help u if i knew what the answer was srry ma g
Step-by-step explanation:
Can you help me solve this pls?
Answer:
advertising cost would be $2010
Step-by-step explanation:
y = 10000(5) + 10
y = 2000 + 10
y = 2010
Answer:
$2010
Step-by-step explanation:
Let x = 10,000
[tex]y = \frac{10,000}{5}+10\\y=2000+10\\y=2010[/tex]
Therefore, the predicted advertisement costs for selling 10,000 books is $2010.
