Answer:
see bottom
Step-by-step explanation:
divide through by 4
x2 - 2x - 3 = 0
x2 - 3x + x - 3 = 0
(x2 - 3x) + (x - 3) = 0
x(x - 3) + 1(x - 3) = 0
(x + 1) (x - 3) = 0
x + 1 = 0 and x - 3 = 0
x = -1 and x = 3
The difference of two numbers is 3. Their sum is 13. Find the numbers.
Answer:
the correct numbers are 8 and 5
PLEASE HELP ME I WILL HIVE BRAINLIST TO THE CORRECT ANSWER !!!!!!!!!!!
Answer:
I'm not 100 percent sure but I think it's the first answer choice because at 40000 3 years have passed. Hope this helps :)
Answer:
The machinery ages three years for every $10,000 loss in value.
Step-by-step explanation:
We can see from the graph that each year, the machinery loses a value of $5,000 (Goes from $50,000 to $45,000 after year one, from $45,000 to $40,000 after year two etc). So we can discount the last two answers.
If it loses $5,000 each year, it loses $15,00 after ageing three years, and $25,00 after five years. Though neither of the first two answers correspond to this, the first answer is closest.
1/2 ÷ 3 = 4 2/3 ÷ x. Solve the proportion
Answer:
x=28
Step-by-step explanation:
i hope my answer is correct. it's been a while since i've done this.
Show work please and thanks
which of the following describes the data set? 6,7,11,14,20,30,35
Answer:
D
The numbers are already in order so you don't need to do anything
Answer:
its b for me but d for yall
Step-by-step explanation:
all you do is count up hope this helps can u mark me brainlest
What is the distance between (5, 5) (5, -2)
Answer:
7 units
Step-by-step explanation:
To find the distance between a pair of points, use the distance formula, [tex]d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]. Substitute the x and y values of (5,5) and (5, -2) into the formula and simplify:
[tex]d= \sqrt{(5-5)^2+(5+2)^2} \\d = \sqrt{(0)^2+(7)^2} \\d = \sqrt{0+49} \\d = \sqrt{49}\\d=7[/tex]
So, the answer is 7 units.
number 10 step by step :(
Does anyone have the answer key to this? Need it ASAP!
The Distance between point A and Point B is √10 units.
What is Distance?Distance is a numerical measurement of how far apart objects or points are. In Physics or everyday usage, distance may refer to a physical length or an estimation based on other criteria.
Here, Coordinates of A is (1, 8) and B is (4, 9).
Distance formula = √(x₂-x₁)² + (y₂-y₁)²
= √(4 - 1)² + (9 - 8)²
= √9 +1
AB = √10
Thus, the Distance between point A and Point B is √10 units.
Learn more about Distance from:
https://brainly.com/question/12319416
#SPJ2
Stella was out at a restaurant for dinner when the bill came. Her dinner came to $10. She wanted to leave a 25% tip. How much was her meal plus the tip, before tax, in dollars and cents?
Answer:
12.50
Step-by-step explanation:
Help with this question pls
Answer:
128 customers
Step-by-step explanation:
Brainliest maybe? :)
PLEASE HELP
Use the equation y=3(12)x to determine the value of y if x=−2.
A. 3
B. 4/9
C. 3/4
D. 12
hii help me out please is this a function or not you'll get 50+ brainliest points
Answer:
This is not a function
Step-by-step explanation:
What is the value of y=8−3x when x=5?
When x=5, y=
Answer:
-7 will be the answer.
Step-by-step explanation:
By Putting the value of x, we get:
y=8-3x
y=8-3(5)
y=8-15
y= -7
Simplify 42 ⋅ 48.
Please help with this!
Answer:
Step-by-step explanation:
a^x. a^y=a^{x+y}
4²*4^8=4^{10}
Answer:
4 to the power of 10
Step-by-step explanation:
Will mark brainliest. Question is below.
A trash can is in the shape of a cylinder. It has a radius of 2 feet and a height of 5 feet. What is the volume of the trash can? Round to the nearest tenth. Use 3.14 for π or pi.
Answer:
62.8 cubic feet
Step-by-step explanation:
V = πr^2h
r is radius
h is height
Radius = 2ft
Height = 5ft
V = (3.14)(2)^2(5)
V = 62.8 cubic feet
Question 3
Which of the following can be formed when a plane intersects a cone? Select all that apply.
Answer:
in geometry nation, is circle, isosceles triangle and parabola.
Step-by-step explanation:
just did it.
A study was conducted to investigate whether there are regional differences in peanut butter preference in the United States. The country was divided into 7 geographic regions, and in each region a random sample of peanut butter eaters were asked whether they preferred creamy or crunchy peanut butter. The responses were summarized in a 7-by-2 table of counts for each combination of geographic region and creamy or crunchy peanut butter preference. Which of the following tests is the most appropriate for the investigation?
Answer:
C- Chi-square test for Homogeneity
Step-by-step explanation:
Because you're looking for whether there are regional differences in peanut butter into 7 different samples, that means you're searching for i categorical variable in the 7 different random samples, making it a chi-square for homogeneity.
What are 3 digits that equal 24
Answer:
1 x 24, 2 x 12, 3 x 8, and 4 x 6.
Hope this helps
Have a great day
Step-by-step explanation:
Answer:
8+8+8 is the answer give brainliest
BRAINLIEST FOR CORRECT ANSWER, IM FAILING SCHOOL AND NEED HELP ASAP. EVEN OFFICIAL HELP COUNTS
Answer:
80
Step-by-step explanation:
sorry if wrong
The scatter plot below shows the change in the demand for a pair of jeans at a store as the price changes. The sales manager uses y= -1.75x+92.13 as a line of best fit.
What is the residual value when the price of jeans is $28.00?
A)−9.37
B)−1.13
C)1.13
D)9.37
Answer:
1.13
Step-by-step explanation:
The residual value when the price of jeans is $28.00 is -15.13
How to determine the residual?The equation of the line of best fit is:
y= -1.75x+92.13
When the price of jeans is $28.00, we have:
y= -1.75*28+92.13
Evaluate
y= 43.13
The residual value is then calculated as:
Residual = Actual - Observed
This gives
Residual = 28.00 - 43.13
Evaluate the difference
Residual = -15.13
Hence, the residual value when the price of jeans is $28.00 is -15.13
Read more about residual at:
https://brainly.com/question/16060586
Find an equivalent fraction 1/8 = x/56
Answer: I think it’s 1/8 = 7/56
The value of an equivalent fraction is,
⇒ 1/8 = 7/56
We have to given that,
A fraction to solve,
⇒ 1/8 = x/56
Now, We can simplify as,
⇒ 1/8 = x/56
Cross multiplication,
⇒ 56 = 8x
⇒ x = 56/8
⇒ x = 7
Therefore, The value of an equivalent fraction is,
⇒ 1/8 = 7/56
Learn more about the fraction visit:
https://brainly.com/question/5454147
#SPJ6
Karyn has 11/8 pounds of chili to put into three bowls. The amount of chili in each bowl does not have to be the same. How much chili could Karyn put into each bowl? Solve this
Answer:
bowl a: 11/8 pounds of chili
bowl b: 11/24 pounds of chili
bowl c: 33/48
Write an equation for a circle that follows the same pattern as the other circles. Explain how your equation follows the same pattern you identified.
9514 1404 393
Answer:
(x -4)² +(y +3)³ = 4
Step-by-step explanation:
Each circle is centered on (h, k) = (4, -3). Each circle has a radius 1 unit smaller than the circle just outside of it. The innermost circle shown has a radius of 3, so the next in the pattern of smaller circles will have a radius of 2. The equation for a circle centered at (h, k) with radius r is ...
(x -h)² +(y -k)² = r²
The next circle in the pattern is centered at (4, -3) and has radius 2, so its equation is ...
(x -4)² +(y +3)² = 4
A university wants to investigate how much its students spend on textbooks each semester. Since all
students must purchase their materials through the campus bookstore, a random sample of 15 student
accounts is selected, and the averagą dollar amount spent on textbooks is calculated.
Which of these circumstances would make it inappropriate to use this sample to calculate a 95%
confidence interval for the mean amount spent on books by students at this university?
The standard deviation of the textbook costs is below $30.
The standard deviation of the textbook costs is larger than $100.
A stem-and-leaf plot of the textbook costs shows a roughly symmetric distribution
A histogram of the textbook costs is calculated and shows a slight skew to the right.
A boxplot of the textbook costs shows two students whose amounts would qualify as outliers,
Answer:
Step-by-step explanation:
please help me i will give a brainliest
Answer:
(-3,2)
Step-by-step explanation:
you go to the left by 3 (negative), then you went up by 2 (positive). You always do x (horizontal) before y (vertical).
:)
karina has a job at a video game store, the total she is paid each week is made up of an hourly rate of
Answer:
you have not put the full question
Step-by-step explanation:
Answer:
The question is incomplete
A random sample of elementary school children in New York state is to be selected to estimate the proportion p who have received a medical examination during the past year. An interval estimate of the proportion p with a margin of error of 0.06 0.06 and 99% 99 % confidence is required.
Answer:
The minimum sample size required is 461.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
99% confidence level
So [tex]\alpha = 0.01[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.01}{2} = 0.995[/tex], so [tex]Z = 2.575[/tex].
An interval estimate of the proportion p with a margin of error of 0.06. What is the minimum sample size required?
The minimum sample size required is n, which is found when M = 0.06.
We don't have an estimate for the true proportion, which means that we use [tex]\pi = 0.5[/tex]. So
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]0.06 = 2.575\sqrt{\frac{0.5*0.5}{n}}[/tex]
[tex]0.06\sqrt{n} = 2.575*0.5[/tex]
[tex]\sqrt{n} = \frac{2.575*0.5}{0.06}[/tex]
[tex](\sqrt{n})^2 = (\frac{2.575*0.5}{0.06})^2[/tex]
[tex]n = 460.5[/tex]
Rounding up
The minimum sample size required is 461.
Which of the following could be the beginning of a geometric sequence?
Answer:
Step-by-step explanation:
it's d for this one, if you'd like to know how to get the answers I can show you but ask in the comments of this question. I'll see that comment later
Write an equation in slope-intercept form for the line with slope -8 and y-intercept 8. The. Graph is he line.
Answer:
y=-8x+8
Step-by-step explanation:
y=mx+b where m=slope and b=y-intercept
y=-8x+8
please help me thanks
Answer:
D
Step-by-step explanation:
Answer:
each person gets 2 1/2
Step-by-step explanation:
You divide and get 2 1/2
the answer is D