Answers
Answer:
B) {8.71}
Step-by-step explanation:
3. l.c.m=28
28×3/7=28×b-7/4
4×3=7(b-7)
12=7b-49
12+49=7b
61=7b
61/7=7b/7
8.71=b
b=8.71.
Related Questions
calculate: 31.13× 4.5
Answers
Answer:
140.085
Step-by-step explanation:
Answer:
140.08
Step-by-step explanation:
Hope it helped!
solve pls brainliest
Answers
Pounds of cake needed:
\(\tt \dfrac{4}{15}\times \dfrac{14}{15}=\dfrac{56}{225}\)
Flours left:
\(\tt \dfrac{14}{15}-\dfrac{56}{225}=\dfrac{210}{225}-\dfrac{56}{225}=\dfrac{154}{225}\)
we begin by finding the y component of c⃗ from its length and the angle it makes with the x axis, that is, from geometry.
Answers
The y component of vector C⃗ can be expressed as y = C * sin(ϕ), where C is the length of vector C⃗ and ϕ is the angle it makes with the x-axis.
To express the y component of vector C⃗ in terms of its length C and the angle ϕ it makes with the x-axis, we can use trigonometry.
The y component can be found using the formula:
y = C * sin(ϕ)
In this equation, C represents the length of vector C⃗ and ϕ represents the angle it makes with the x-axis. By multiplying the length C by the sine of the angle ϕ, we can determine the y component of vector C⃗.
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The complete question is:
We begin by finding the y component of C⃗ C→C_vec from its length and the angle it makes with the x axis, that is, from geometry.
Express the y component of C⃗ C→C_vec in terms of CCC and ϕϕphi.
The least preferable and reliable method of selecting people to participate in a research study is:_____.
Answers
The least preferable and reliable method of selecting people to participate in a research study is convenience sampling.
Convenience sampling is a type of sampling in which you include people who are easy to reach. Convenience sampling is included in non-probability sampling because it doesn't include a random selection of the participants. Convenience sampling can be used when you need to conduct a study quickly or when you are on a shoestring budget as it is inexpensive compared to other methods of sampling.
It is the least preferable method because of the inability to generalize the result of the survey to the population as a whole. In addition to this, there is a possibility of under or over-representation of the population as a whole. The biggest problem with convenience sampling is dependence as the sample items are connected to each another in some way. This dependency interferes with statistical analysis.
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Please help me on this
Answers
Answer:
\(5.4 \times {10}^{ - 17} {m}^{2} \)
\(s = \frac{1}{2} \times 3.6 \times10^{ - 9} \times 3 \times {10}^{ - 8} = 5.4 \times {10}^{ - 17} {m}^{2} \)
Find the value of d that makes the equation true.
d-(-8) = -14
A 112
B. 96
C. 112
D. 150
Answers
Answer:
C. 112
Step-by-step explanation:
d/(-8)=-14
In division, to get a negative answer, you require a positive and a negative number. So you can eliminate option A. Then, if you multiply -8x-14, you get a positive value of 112.
need help asap. substitute didn’t teach us our lesson
Answers
The trigonometric ratios for angle x in the given right triangle are:
\(sin(x) = a/c\\\\cos(x) = b/c\\\\tan(x) = a/b\)
To find the trigonometric ratios for angle x in a right triangle with side lengths a, b, and c, we need to use the definitions of the trigonometric functions:
sin(x) = opposite/hypotenuse
cos(x) = adjacent/hypotenuse
tan(x) = opposite/adjacent
In a right triangle, the side lengths are related as follows:
a: opposite side to angle x
b: adjacent side to angle x
c: hypotenuse
Using these lengths, we can find the trigonometric ratios:
sin(x) = a/c
cos(x) = b/c
tan(x) = a/b
Therefore, the trigonometric ratios for angle x in the given right triangle are:
sin(x) = a/c
cos(x) = b/c
tan(x) = a/b
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The point (-3, 5) has been reflected so that the image is at (5, -3). What is the line of reflection?
A. x-axis
B. y-axis
C. y=x
D. y=-x
Please select the best answer from the choices provided
A
Mark this and return
Save and Exit
Next
Submit
Answers
Answer:
C. y=x
Step-by-step explanation:
If you use a graphing calculator and plot the points (-3,5) & (5,-3) and then graph y=x you can see it is the line of reflection.
Also when reflecting over the line y=x, we switch our x and y.
In the following number, 3 x 106 indicate
the coefficient_______________and exponent________
Answers
In the number 3 × 106, 3 is the coefficient and 106 is the exponent. A coefficient is the numerical factor of a term that includes a variable raised to a power in an algebraic expression,
whereas an exponent is the number of times a quantity is multiplied by itself in an exponentiation expression.According to the laws of exponents,
multiplying the same base number is equivalent to adding their exponents. In this example, 106 represents that the base number (10) is multiplied by itself six times, giving us 1,000,000 (10 × 10 × 10 × 10 × 10 × 10).Therefore, 3 × 106 is equal to 3,000,000.
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Translate the figure 2 units left and 4units down. What are the coordinates of the image?
Answers
Answer:
A'(-3, 0) B'(0, -1) C'(1, -4)D'(-3, -5)
Step-by-step explanation:
You find each dot and move 2 squares left and 4 squares down.
You now find the first number by finding which x-values it is above/below on the x-axis (horizontal bold line).
Then for the second by finding which y-values it is beside on the y-axis (vertical bold line).
Please help me with this
Answers
Answer:
A
Step-by-step explanation:
In the formulas for constructing interval estimates based on sample proportions, the expression Pu (l - Pu) has a maximum value of
Answers
In the formulas for constructing interval estimates based on sample proportions, the expression Pu (l - Pu) has a maximum value of 1/4.Let's discuss interval estimates based on sample proportions first. A proportion is the number of items in one category divided by the total number of items in all categories.
A sample is a smaller version of a population that we use to gather data and infer characteristics about the population. A confidence interval is a range of values that contains the true population parameter with a certain level of confidence. When we want to estimate the proportion of a population that has a certain characteristic, we use a sample proportion to estimate it.
A formula is used to construct a confidence interval around the sample proportion. The formula for constructing interval estimates based on sample proportions is given by: Lower Bound: P - zα/2 * sqrt(PQ/n)Upper Bound: P + zα/2 * sqrt(PQ/n)Where P is the sample proportion, Q is (1 - P), n is the sample size, and zα/2 is the z-score corresponding to the desired level of confidence. The expression Pu (l - Pu) has a maximum value of 1/4.
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is anyone expert here in data forecasting methods? I need some help in some topics like time series(holts, holts winter), naive method, regression, acf, pacf, arima, stl method and multivariate time series. please reply if you can help me with these topics
Answers
Yes, there are experts here in data forecasting methods who can help you with the topics you've mentioned including time series (holts, holts winter), naive method, regression, acf, pacf, arima, stl method and multivariate time series.
Below are brief explanations of each of these terms:
Time Series: A time series is a sequence of observations of a particular quantity measured over time. Holts Method: The Holt’s method is a forecasting method that forecasts the data by taking into account the trend component along with the level component. Holts Winter Method: Holt's winter model is used to forecast seasonal univariate time series.Naive Method: The naive method is a forecasting method that uses the most recent observation as a forecast for the next time period.Regression: Regression is a statistical method used to estimate the strength and direction of the relationship between two or more variables.ACF & PACF: Autocorrelation function (ACF) and partial autocorrelation function (PACF) are statistical tools used to determine the nature of the correlation between a variable and its lag.ARIMA: ARIMA stands for AutoRegressive Integrated Moving Average. ARIMA is a forecasting technique that uses past data points to predict future values.STL Method: STL is a time series decomposition method that separates a time series into three components: trend, seasonality, and random.Multivariate Time Series: Multivariate time series analysis deals with the analysis of time series data that involves more than one variable.Based on the topics you've mentioned, you may want to ask specific questions regarding these topics to get more detailed answers.To know more about data forecasting, visit
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consider an experiment to investigate the effectiveness of different insecticides in controlling pests and their impact on the productivity of tomato plants. what is the best reason for randomly assigning treatments (spraying or not spraying) to the farms?
Answers
Randomly assigning treatments to the farms is the best way to ensure that the results of the experiment are valid, unbiased, and accurate.
Random assignment of treatments is the best way to ensure that the results of the experiment are valid and not biased. Random assignment of treatments would ensure that the results are not affected by factors such as soil type, climate, and other environmental conditions. This is because random assignment of treatments would ensure that the farms that receive the insecticide treatment are not systematically different from those that do not receive the treatment. This is important in order to gain accurate results from the experiment.
Random assignment of treatments is accomplished using the following formula:
Treatment Assignment = (Number of Farms) x (Random Number between 0 and 1)
By randomly assigning treatments to the farms, we can be sure that the results are not skewed by external factors. This will allow us to better determine the effectiveness of different insecticides in controlling pests and their impact on the productivity of tomato plants.
Randomly assigning treatments to the farms is the best way to ensure that the results of the experiment are valid, unbiased, and accurate.
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John Doe wins the lottery for 3 million dollars. The lottery will pay him $100,000 each year at the end of each of the next 30 years. (thirty installments in total). However, assume the lottery offers a lump sum option where John Doe can take the present value of those 30 future payments immediately. Assuming the lottery uses a discount rate of 6%.
How much is the present value of his winnings?
Group of answer choices
$1,535,400
$1,158,600
$1,376,500
$1,814,300
Answers
This expression gives us a present value of approximately $1,376,500.
To calculate the present value of John Doe's winnings, we need to find the present value of each individual payment and then sum them up.
The formula to calculate the present value of an annuity is:
PV = C * (1 - (1 + r)^(-n)) / r
Where PV is the present value, C is the annual payment, r is the discount rate, and n is the number of periods.
In this case, John Doe will receive $100,000 each year for 30 years, and the discount rate is 6%. Plugging these values into the formula, we get:
PV = $100,000 * (1 - (1 + 0.06)^(-30)) / 0.06
Calculating this expression gives us a present value of approximately $1,376,500.
Therefore, the correct answer is:
c. $1,376,500.
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Which of the following correctly gives the center and radius of the circle defined by the equation (x - 7)2 + (x - 2)2 = 10? A. Center: (7, 2); Radius = 100 B. Center: (7, 2); Radius = 10 C. Center: (-7, -2); Radius = 100 D. Center: (-7, -2); Radius = 10
Answers
Answer:
Center (7,2) and radius = 10
Step-by-step explanation:
Generally, we have the equation of a circle as follows;
(x-a)^2 + (y-b)^2 = r^2
where (a,b) represents the circle center and r represents the radius of the circle
Looking at the given equation of a circle, we have it that the center is (7,2) while the radius of the circle is 10
If z = 13 - 71, what is the value of z?
BE
O 6
O 2/30
218
O 20
Answers
Answer:
z=-58 bc 13-71= -58
Step-by-step explanation:
z=13+-71
z=(13+-71)
Combine like terms
z=-58
9x + 3y = 6 and 3x + 9y = 6
Tell whether the lines are parallel, perpendicular or neither:
a)neither
b)parallel
c)perpendicular
Answers
Answer:
neither
Step-by-step explanation:
Have a great day!
Mr. Sid spends 2 5 of his salary on food and 3 10 of the remaining on house rent and electricity. If he keeps the remaining part of his salary as savings, what fraction of his salary does he save?
Answers
The fraction of his salary he does save is 3/10, on the basis that Mr. Sid spends 2/5 of his salary on food and 3 10 of the remaining on house rent
What fraction of total salary is saved?
The fraction of the salary saved means the proportion of total salary that is neither spent on food nor on house rent, it can determined as the total salary minus the fractions spent on food and house rent respectively
If assume that the total salary is 1, when deducting 2/5 and 3/10 from 1 we can determine the part that is saved
savings=1-(2/5)-(3/10)
if lcm is 50, we would have the below
savings=(50-20-15)/50
savings=15/50
savings=3/10
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______ has at least one solution, and an inconsistent system has no solution.
Answers
The statement "Consistent system of equations has at least one solution, and an inconsistent system has no solution" is true.
In the context of systems of linear equations, a consistent system refers to a system where there exists at least one solution that satisfies all the equations in the system. This means that the equations can be simultaneously satisfied by a set of values for the variables.
On the other hand, an inconsistent system refers to a system of equations that has no solution. This occurs when the equations are contradictory or cannot be satisfied simultaneously by any values for the variables.
Therefore, a consistent system guarantees the existence of at least one solution, while an inconsistent system does not have any solution.
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i'm confused with this who knows about this?
Answers
Answer:
its C :)
Step-by-step explanation:
You work at a hardware store earning $8. 50 per hour. You work no more than 40 hours each week. Your friend says that the function y = 8. 5x represents the amount of money you earn each week where the domain of x > 40 represents the number of possible hours you work. Is your friend correct? Explain
Answers
Answer:3.5
Step-by-step explanation:
Help me please it’s important !
Answers
Answer:
90
9
Step-by-step explanation:
Each student in a school was asked, "What is your favorite color?" The circle graph below shows how they answered.
Answers
QUESTION A
One-fourth of a circle graph is in the shape of a quadrant. This is shown below:
The color with an approximate shape as shown in the diagram is Pink.
Hence, the answer is PINK.
QUESTION B
Pink or Purple takes up more than 1 quadrant but not quite 2 quadrants.
The angle of a quadrant is 90° while for the full circle, it is 360°.
If we assume that Pink or Purple takes up 1 and a half quadrants, we can approximate that the angle will be:
\(90+\frac{90}{2}=135\degree\)Therefore, the percentage will be:
\(\frac{135}{360}\times100=37.5\%\)This is approximately 40%.
Hence, the answer is 40%.
Find the measurement of both supplementary angles if one is twice the measurement of the other one.
Answers
Answer: 60, 120
Step-by-step explanation:
Let one angle be x
The other angle is 2x
x + 2x = 180°
3x = 180°
x = 180/3 = 60
Other angle is 2 * 60 = 120
Valerie has 2 envelopes in each of her 3 drawers. Each envelope has 6 stickers. How many stickers does she have in all?
Answers
Answer:
36
Step-by-step explanation:
2 envelopes x 3 drawers = 6 envelopes.
Each envelope has six stickers.
6 x 6 = 36
Answer:
36
Step-by-step explanation:
Please help! Worth 60 points for the rapid reply- Find the slopes of each side of the quadrilateral. Also, what is the most accurate classification for the quadrilateral? Rhombus, Trapezod, or Kite.
Answers
Answer:
Trapezoid
mAB = -2/3
mBC = 8
mCD = -2/3
mAD = 14/5
Step-by-step explanation:
Slope formula can be best seen as:
m = (y2 - y1) / (x2 - x1)
Step 1 : Find the Slope of each points
mAB = -2/3
mBC = 8
mCD = -2/3
mAD = 14/5
Step 2 : Classify the Quadrilateral
Rhombus Properties | All side lengths are the same and opposide sides have same slope
Kite | Adjacent sides are the same length
Trapezoid | One set of parrallel line (same slope)
Final Answer
Based on the properties of quadrilaterals, it is a trapezoid as it has one pair of parrallel line with the same slope of -2/3.
• Determine the value of x6 when x = 51/3
Answers
x=51/3
This means that c is equivalent to 51 divided by 3. This means that x is equivalent to 17.
Then, since we know that x is 17 and we need 6x, we do 6 x 17. This will result to 102.
In conclusion, the value of 6x if x = 51/3 is 102.
The value of 6x is 102.
What is Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
x=51/3
For 6x put x= 51/3 we get
6x = 6 x 51/3
6x = 2 x 51
6x = 102
Or, \(x^6\) = \((51/3)^6\)
\(x^6\) = 17,596,287,801 / 531,441
Hence, the value of 6x = 102.
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HELP ORGENT
Tyrone has $95 to spend. He already bought pants for $22. How many $5 t-shirts can he buy if he wants to have at least $15 left over?
a. Write an inequality that demonstrates this situation
b. solve your inequality
c. Explain what your answer means to Tyrone
Answers
Answer:
it should be a.
Step-by-step explanation:
Instructions
Here are the low temperatures (in degrees Fahrenheit) for one week in Montreal, Canada:
Weather icon. Top row has the following from left to right: Thu, Fri, Sat, Sun, Mon, Tue, Wed. For the weather, please put the following in order from left to right: negative3.5 degree F, 5 degree F, 1.5 degree F, negative 0.5 degree F, negative 2 degree F, 2.5 degree F, negative 4 degree F.
Part 1: Weather Analysis
Plot and label the temperatures on a number line. You can create the number line by using a drawing program, by drawing it by hand and sending in a picture, or by describing in detail how the completed number line should look.
Compare the weather on two different days using an inequality. Then see if their comparisons change by finding the absolute value of each.
Day 1:
Day 2:
Comparison of Day 1 and Day 2: ____ < _____ or _____ > _______
Comparison of days with absolute value: ____ < _____ or _____ > _______
Which temperature during the week is the closest to 0? Explain how you decided this using absolute value.
Which temperature during the week is farthest from 0? Explain how you decided this using absolute value.
Which is the coldest temperature? Explain how you determined this using the number line.
Which is the warmest temperature? Explain how you determined this using the number line.
Part 2: Weather Report
Use the information from the analysis and develop a weather report. You can develop a flyer or make a presentation, video or audio recording of yourself, or script. Use your creativity! Make sure to include the information from all six questions.
Answers
Answer:
Hi!! I only have the first parts not the weather report :( But here you go!
Step-by-step explanation:
Hope this helps you!!!
Have a blessed day/night!!
Happy holidays!!
Answer:
the bold word are the answer
Step-by-step explanation:
Compare the weather on two different days using an inequality. Then see if their comparisons change by finding the absolute value of each.
Day 1: 1-3’F
Day 2: 5’F
Comparison of Day 1 and Day 2: -3.5< or 5 >
Comparison of days with absolute value: -3.5 < 5L
Which temperature during the week is the closest to 0? Explain how you decided this using absolute value. -0.5 because it’s the smallest number.
Which temperature during the week is farthest from 0? Explain how you decided this using absolute value. 5°F because it is the greatest number and the greater the number the farther it is from 0.
Which is the coldest temperature? Explain how you determined this using the number line.
- 4°F because it is farther on the left side of zero on the number line.
Which is the warmest temperature? Explain how you determined this using the number line.
5°F because it is farther on the right side of zero on the number line