What’s the domain of the function shown in the graph. Please explain because I’m confused.
Answers
Answer:
x>-2
Step-by-step explanation:
If you can see, the palabara starts at x=-2 and continues in higher x values. Thus, x>-2.
Related Questions
If an equation, Y varies directly as X varies. If Y equals 208 when X equals 13, what is the value of X when Y equals -144?
Answers
Answer: X = -9
Step-by-step explanation:
You can set up a ratio to solve this.
208/13 = -144/x
208x=-1872
x = -9
\(\mathbb{ANSWER:}\)
Step 1: Write the equation of variation
\(\sf y \propto x\)\(\sf y = kx\)Step 2: Solve for k or the constant of proportionality
\(\sf 208 = k(13)\)\(\sf \frac{208}{13} = \frac{k(13)}{13}\)\(\sf k = 16\)Step 3: Solve for x
\(\sf -144 = 16x\)\(\sf \frac{-144}{16} = \frac{16x}{16}\)\(\sf x = \boxed{\sf -9}\)Given the diagram below. If TW = 120, what is the length of UV?
Answers
Given:
TW=120
TV=3x+1
UV=x-6
UW=8x-4
The objective is to find the length of UV,
The length of UV can be calculated as,
\(\begin{gathered} TW=TV+UW-UV \\ 120=3x+1+8x-4-(x-6) \\ 120=3x+1+8x-4-x+6 \\ 120=10x+3 \\ 10x=120-3 \\ x=\frac{117}{10} \\ x=11.7 \end{gathered}\)Now, substitute the value of x in UV.
\(\begin{gathered} UV=x-6 \\ UV=11.7-6 \\ UV=5.7 \end{gathered}\)Hence, the length of UV is 5.7.
PLS HELP WILL GIVE BRAINLY!!
What is the weight (in grams) of a liquid that exactly fills a 182.8 milliliter container if the density of the liquid is 0.135grams over milliliter? Round to the nearest hundredth when necessary, and only enter numerical values, which can include a decimal point
Answers
Answer:
24.68 gram
Step-by-step explanation:
Given that :
Volume = 182.8 ml
Density of liquid = 0.135 gram/ml
Recall :
Density = mass (g/ml) / volume (ml)
Substitute the value into the equation :
0.135 = mass / 182.8
Mass = 0.135 * 182.8
Mass = 24.678 gram
Hence, weight = 24.678 grams
At one location, the temperature increased from -7° F to 40 F between 5:00 a.m. and 9:00 a.m. By 11:00 a.m., the temperature was 3.5 times greater than the 9:00 a.m. temperature. What was the total increase in temperature between 5:00 a.m. and 11:00 a.m., in degrees Fahrenheit?
Answers
Answer:
the answer is 82 F add the temperature together
The total increase in temperature between 5:00 a.m. and 11:00 a.m., in degrees Fahrenheit, is 164.5°F.
What is an expression?
The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that at one location, the temperature increased from -7° F to 40 F between 5:00 a.m. and 9:00 a.m. By 11:00 a.m., the temperature was 3.5 times greater than the 9:00 a.m. temperature.
The temperature will be calculated as,
Temperature = ( 40 - (-7) x 3.5
Temperature = 47 x 3.5
Temperature = 164.5°F
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Calculate the lower confidence limit (LCL) and upper confidence limit (UCL) of the mean for each of the following. bar x= 160, n = 436, sigma = 30, and alpha = 0.01 bar x = 70, n = 323, sigma = 4, and alpha = 0.05 LCL =
Answers
LCL and UCL values of both scenarios are (158.61,161.39),(69.65,70.35) respectively.
To calculate the lower confidence limit (LCL) and upper confidence limit (UCL) for each given scenario, you'll need to use the following formula:
LCL = X - (z * (sigma / √n))
UCL = X+ (z * (sigma / √n))
where X is the sample mean, n is the sample size, sigma is the population standard deviation, and z is the z-score corresponding to the desired confidence level (1 - alpha).
First Scenario:
X = 160, n = 436, sigma = 30, alpha = 0.01
1. Find the z-score for the given alpha (0.01).
For a two-tailed test, look up the z-score for 1 - (alpha / 2) = 1 - 0.005 = 0.995.
The corresponding z-score is 2.576.
2. Calculate LCL and UCL.
LCL = 160 - (2.576 * (30 / √436)) ≈ 158.61
UCL = 160 + (2.576 * (30 / √436)) ≈ 161.39
First Scenario Result:
LCL = 158.61
UCL = 161.39
Second Scenario:
X= 70, n = 323, sigma = 4, alpha = 0.05
1. Find the z-score for the given alpha (0.05).
For a two-tailed test, look up the z-score for 1 - (alpha / 2) = 1 - 0.025 = 0.975.
The corresponding z-score is 1.96.
2. Calculate LCL and UCL.
LCL = 70 - (1.96 * (4 / √323)) ≈ 69.65
UCL = 70 + (1.96 * (4 / √323)) ≈ 70.35
Second Scenario Result:
LCL = 69.65
UCL = 70.35
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TRUE/FALSE. the variance is the simplest measure of dispersion and is computed as the difference between the maximum value and the minimum value in the data set.
Answers
It is true that the variance is the simplest measure of dispersion and is computed as the difference between the maximum value and the minimum value in the data set.
What is variance?Variance is a measure of dispersion that, in contrast to range and interquartile range, accounts for the spread of all data points in a data collection. Along with the standard deviation, which is just the square root of the variance, it is the measure of dispersion that is most frequently employed. The statistical assessment of the variation in numbers within a data collection is known as variance. In more detail, variance assesses how far apart each number in the collection is from the mean (average) and, consequently, from each other.
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what is the null hypothesis in words? group of answer choices the (population) mean amount of time reading and sending e-mails daily is greater than 60 minutes. the (population) mean amount of time reading and sending e-mails daily is equal to 60 minutes the (sample) mean amount of time reading and sending e-mails daily is equal to 60 minutes. the (sample) mean amount of time reading and sending e-mails daily is greater than 60 minutes.
Answers
The null hypothesis is a common statistical theory that contends that there is no statistically significant association between any two sets of a single observed variable.
The hypothesis suggests no two given sets make any significance meaning until and unless they are proven wrong.
As given in the example,
The group of answer choices the (population) mean amount of time reading and sending e-mails daily is greater than 60 minutes and the (population) mean amount of time reading and sending e-mails daily is equal to 60 minutes.
You can see in one set the amount of reading and sending e-mails is more than 60 minutes and in other one the amount of time reading and sending e-mails is equal to 60 minutes which doesn't make any sense if you consider them both in a single set of information.
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3. An item sells for $40. The sales tax on
the item is 8%. What is the sales tax and
total cost?
Answers
Answer:
Tax: $3.20
Total: $43.20
Step-by-step explanation:
8% of $40 = 0.08 * $40 = $3.20
$40 + $3.20 = $43.20
Tax: $3.20
Total: $43.20
in chicago, the tenperature dropped from 21 degrees to -7 degreees over the course if 6 hours, identify the rational number that represents the average temperature change per hour
Answers
Answer:
4.6667
Step-by-step explanation:
Pls help I’m getting confused even though should be pretty easy.
Answers
Answer:
V = 108
Step-by-step explanation:
B = 9 x 4 = 36 Height of Triangular prism is 3 so 36 x 3 = 108
Adding the fractions
3/14+2/21+1/6
Answers
Answer:
\(\frac{10}{21}\)
Step-by-step explanation:
The LCM of 14, 21 and 6 is 42
We require to change the fractions to fractions with a denominator of 42
\(\frac{3(3)}{14(3)}\) + \(\frac{2(2)}{21(2)}\) + \(\frac{1(7)}{6(7)}\)
= \(\frac{9}{42}\) + \(\frac{4}{42}\) + \(\frac{7}{42}\) ← add the numerators, leaving the denominator
= \(\frac{9+4+7}{42}\)
= \(\frac{20}{42}\) ← divide both values by 2
= \(\frac{10}{21}\) ← in simplest form
Let y =| 5|, u1= , u2 =| 글 1, and w-span (u1,u2). Complete parts(a)and(b). a. Let U = | u 1 u2 Compute U' U and UU' | uus[] and UUT =[] (Simplify your answers.) b. Compute projwy and (uuT)y nd (UU)y (Simplify your answers.)
Answers
a)Computing UU', we multiply U with U', resulting in a 1x1 matrix or scalar value. b) Calculating the matrix product of uuT with vector y. The result will be a vector.
In part (a), we are asked to compute U'U and UU', where U is a matrix formed by concatenating u1 and u2. In part (b), we need to compute projwy, (uuT)y, and (UU)y, where w is a vector and U is a matrix. We simplify the answers for each computation.
(a) To compute U'U, we first find U', which is the transpose of U. Since U consists of u1 and u2 concatenated as columns, U' will have u1 and u2 as rows. Thus, U' = |u1|u2|. Now, we can compute U'U by multiplying U' with U, which gives us a 2x2 matrix.
Next, to compute UU', we multiply U with U', resulting in a 1x1 matrix or scalar value.
(b) To compute projwy, we use the projection formula. The projection of vector w onto the subspace spanned by u1 and u2 is given by projwy = ((w · u1)/(u1 · u1))u1 + ((w · u2)/(u2 · u2))u2. Here, · denotes the dot product.
For (uuT)y, we calculate the matrix product of uuT with vector y. The result will be a vector.
Similarly, for (UU)y, c
It's important to simplify the answers by performing the necessary calculations and simplifications for each operation, as the resulting expressions will depend on the specific values of u1, u2, w, and y given in the problem.
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the angle of elevation to the top of a building in new york is found to be 8 degrees from the ground at a distance of 1 mile from the base of the building. using this information, find the height of the building. round to the tenths. hint: 1 mile
Answers
the height of the building is approximately 732.7 feet.
The tangent function is a trigonometric function that relates the ratio of the lengths of the opposite and adjacent sides of a right triangle to the angle between them. Specifically, for an acute angle theta in a right triangle, the tangent of theta is defined as:
tan(theta) = opposite/adjacent
We can use the tangent function to find the height of the building.
Let h be the height of the building. Then, we have:
tan(8 degrees) = h/1 mile
We can solve for h by multiplying both sides by 1 mile:
h = 1 mile * tan(8 degrees)
Using a calculator, we get:
h ≈ 0.139 miles
To convert this to feet, we can multiply by the conversion factor 5280 feet/mile:
h ≈ 0.139 * 5280 feet
h ≈ 732.72 feet
Therefore, the height of the building is approximately 732.7 feet.
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Which equation best matches the least-squares regression line for this data?
Answers
Answer: B.
Step-by-step explanation:
Because b is always right. B Bright!
John wanted to have some fresh air during a beautiful morning time. He then walks 1.00 km north, then tums right and walks 1.00 km east. His speed is 1.50 m/s during the entire stroll. (a) What is the magnitude of his displacement, from beginning to end? (b) If Jane starts at the same time and place as John, but walks in a straight line to the endpoint of John's stroll, at what speed should she walk to arrive at the endpoint just when John does?
Answers
Jane needs to walk at the same speed as John, which is 1.50 m/s, to arrive at the endpoint just when John does.
(a) To find the magnitude of John's displacement, we can use the Pythagorean theorem. The distance he walks north and east form the legs of a right triangle, and his displacement is the hypotenuse. Therefore:
displacement = √(1.00 km)^2 + (1.00 km)^2
= √(2.00 km)^2
= 2.00 km
Note that we must convert the distances to the same units before taking the square root.
(b) Jane needs to walk the same distance as John in the same amount of time to arrive at the endpoint just when John does. Since John walks a total distance of 2.00 km at a speed of 1.50 m/s, he takes:
time = distance / speed
= 2.00 km / 1.50 m/s
= 1333.33 s
Therefore, Jane needs to walk the same distance of 2.00 km in the same time of 1333.33 s. Her speed can be found from:
speed = distance / time
= 2.00 km / 1333.33 s
= 1.50 m/s
Therefore, Jane needs to walk at the same speed as John, which is 1.50 m/s, to arrive at the endpoint just when John does.
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The Mars Global Surveyor recorded the height of Olympus Mons, the tallest mountain on Mars.
The tallest mountain on Earth is Mt. Everest at approximately 8800 meters. Figure 1 shows a representation of Olympus Mons
compared to Mt. Everest. The values on the y-axis are arbitrary.
Figure 1. Mt. Everest and Olympus Mons
12-
Olympus Mons
10-
8
6-
4
Mt. Everest
Using Figure 1, calculate the approximate height of Olympus Mons and enter it in the space provided.
Olympus Mons Height
meters
Answers
Since the values on the y-axis of the graph are arbitrary and not labeled with specific units, we cannot use the graph to calculate the precise height of Olympus Mons in meters.
However, we can use the information given in the problem to estimate that the height of Olympus Mons is significantly greater than the height of Mt. Everest, which is approximately 8,800 meters. In fact, Olympus Mons is the tallest mountain in the solar system, with a height of approximately 22,000 meters (72,000 feet) from its base on the Martian surface to its summit.
Therefore, an approximate height of Olympus Mons is 22,000 meters.
Evaluate 12.5p+11.9r when p=7 and r=8.
Answers
Answer:
182.7
Step-by-step explanation:
plug in 7 for p and 8 for r
12.5(7)+11.9(8)
87.5 + 95.2 = 182.7
hope this helps
write 17598 correct to 2 significant figures
Answers
Answer:
180000
Step-by-step explanation:
2 significant figures means you see the digit next 2 second number. here next number is 5, then you round off second number to the next one. in the case 17 rounded to 18. rest all become 0000
hope it helps!
Write an equation for the following sentence:
The sum of three times a number and 7 is 20.
Answers
Answer:
3x+7=20 is an equation for the sentence.
hope it is right answer for it
Answer:
3x+7=20 is an equation for the sentence.
hope it is right answer for it
1) a child puts $1 into a piggy bank. one week later he puts $1.25. two weeks later he puts $1.50 in the bank and so on. how much money does he put in the bank on the 25th week?
omg save me and explain
Answers
Answer:kkkkkkk
Step-by-step explanation:
Two forces with magnitudes of 25 and 30 pounds act on an object at angles of 10° and 100°, respectively. Find the direction and magnitude of the resultant force. Round to two decimal places in all intermediate steps and in your final answer.
I need an explanation please, I don't even know where to start.
Answers
Answer:
Here you go.
Step-by-step explanation:
x=25cos10+30cos100
y=25sin10+30sin100
v=√(x^2+y^2)
α=tan(y/x)
Rounding to two decimal places in intermediate steps...
x≈19.41, y≈33.89
v≈39.05
α=60.20°
So (39.05, 60.20°)
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On the coordinate plane shown, what is the distance from point Y to point Z? Round your answer to the nearest hundredth. On a coordinate plane, point X is (negative 5, 3), Y (3, 2), Z (negative 1, negative 4).
Answers
= 7.211102550928
The distance is 7.21 units.
Find the value of x ??
A. 31
B. 5
C. 11
D. 25
Answers
Answer: 11
Step-by-step explanation:
By the trapezoid midsegment theorem, x = (9+13)/2 = 11
Solve 15 ≥ -3x or x ≥ -2.
{x | x ≤ -5}
{x | x ≥ -5}
{all reals}
Answers
Answer:
I do not quite understand, but i will give it my best shot. 15 > -15.
Step-by-step explanation:
The correct option would be:
{x | x ≥ -5}
I had this same question on a test and I got it right.
Ashton has been approved for a $200,000 15-year mortgage with an APR of 5.5%.
If they plan to put 10% down, how much is their monthly payment? Calculate the monthly interest.
Answers
The monthly payment for Ashton's $200,000 15-year mortgage with an APR of 5.5% and a 10% down payment is $1,547.16. The monthly interest is $765.16.
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Answer the following: (10 points) a. Find the area to the right of z= -1 for the standard normal distribution. b. First year college graduates are known to have normally distributed annual salaries wi
Answers
The area to the right of z = -1 for the standard normal distribution is approximately 0.8413.
a. To find the area to the right of z = -1 for the standard normal distribution, we need to calculate the cumulative probability using the standard normal distribution table or a statistical calculator.
From the standard normal distribution table, the area to the left of z = -1 is 0.1587. Since we want the area to the right of z = -1, we subtract the left area from 1:
Area to the right of z = -1 = 1 - 0.1587 = 0.8413
Therefore, the area to the right of z = -1 for the standard normal distribution is approximately 0.8413.
b. To answer this question, we would need additional information about the mean and standard deviation of the annual salaries for first-year college graduates. Without this information, we cannot calculate specific probabilities or make any statistical inferences.
If we are provided with the mean (μ) and standard deviation (σ) of the annual salaries for first-year college graduates, we could use the properties of the normal distribution to calculate probabilities or make statistical conclusions. Please provide the necessary information, and I would be happy to assist you further.
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Given m ||n, find the value of x.
(3x-5)
(2x-25)
Answers
Step-by-step explanation:
3x - 5 = 2x - 25
3x - 2x = -25 + 5
x = -20
The value of x from the given figure is 42°.
The given angles are (3x-5)° and (2x-25)°.
What are angles of parallel lines?Angles in parallel lines are angles that are created when two parallel lines are intersected by another line called a transversal.
from the given figure,
y+(2x-25)°=180° (Adjacent angles adds up to 180°)
⇒ y=180°-2x+25°
⇒ y=205°-2x
Here, (3x-5)°=y (Corresponding angles are congruent)
⇒ (3x-5)°=205°-2x
⇒ 3x+2x=205+5
⇒ 5x=210
⇒ x=42°
Hence, the value of x from the given figure is 42°.
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Divide 45 into 2 parts in the ratio 7 : 8.
Answers
Answer:
Step-by-step explanation:
Let the two parts be 7x and 8x then
7x + 8x = 45
15x = 45
x = 45/15
x = 3
7x = 7 * 3 = 21
8x = 8 * 3 = 24
The sampling distribution of differences between means approximates a normal curve whose _____is zero.
Answers
The sampling distribution of difference between means approximates a normal curve whose mean is zero.
The sampling distribution means the probability distribution based on the large number of samples of size n from the given population
Mean is the average of the given numbers and it is calculated by dividing the sum of observation by the number of observation. Here the term observation represents the given data.
Here they used the normal curve, sot its mean value is zero
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Midpoint And Distance in the Coordinate Plane
1. What is the length of AB with endpoints A(3,2) and B (8,14)
*13*
2. What is the midpoint of AB, with endpoints A (3,2) and B (8,14)?
*(5.5,8)*
3. ABC has vertices A(1,5), B(9,7),and C (7.13). M is the midpoint of AB. And N is the midpoint of BC. Which of the following is the length of MN?
*5*
Answers
Question 1
\(\sqrt{(3-8)^2 +(2-14)^2}=13\)
Question 2
\(\left(\frac{3+8}{2}, \frac{2+14}{2} \right)=(5.5, 8)\)
Question 3
\(M=\left(\frac{1+9}{2}, \frac{5+7}{2} \right)=(5, 6) \\ \\ N=\left(\frac{9+7}{2}, \frac{7+13}{2} \right)=(8, 10) \\ \\ MN=\sqrt{(8-5)^2 + (10-6)^2}=5\)
