Answer:
x ∠ -3
Step-by-step explanation:
To solve this inequality, we have to follow the steps below
open the bracket
collect like term
subtract and then divide both sides so that we can be left with just the variable
9(2x +1) < 9x - 18
opening the bracket, the equation becomes;
18x + 9 < 9x - 18
collect like terms, numbers with x variables on the left-hand side, and numbers standing alone on the right-hand side of the inequality
18x - 9x < -18-9
9x < -27
Divide both sides of the equation by 9
9x/9 < -27/9
x < -3
any list of five real numbers is a vector in set of real numbers r superscript 5ℝ5.
Yes, any list of five real numbers can be considered a vector in the set of real numbers with dimension 5, denoted as ℝ5.
A vector is a mathematical object that represents a quantity with both magnitude and direction. In the case of ℝ5, this set includes all possible lists of five real numbers, which can be thought of as five-dimensional vectors. Each number in the list represents a component or coordinate of the vector, indicating how far it extends in each of the five dimensions.
Therefore, any list of five real numbers can be considered a vector in the set of real numbers with dimension 5, denoted as ℝ5.
In mathematics, a vector is an element of a vector space, which is a set of objects that can be added together and multiplied by scalars (real numbers). The set ℝ⁵ is a vector space consisting of all 5-tuples (lists) of real numbers, written as (a₁, a₂, a₃, a₄, a₅), where each element aᵢ is a real number. Any list of five real numbers forms a vector in ℝ⁵ because it satisfies the required conditions to be an element of the vector space.
A list of five real numbers is indeed a vector in the set of real numbers ℝ⁵, as it meets the necessary criteria to be a part of the vector space.
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write a linear equation given the point and slope or two points.
(-7, 13); slope = -2
(-4, 6); slope = -3/4
(-5, -11) and (-2, 1)
(-6, 8) and (3, -7
Answer:
1) y = -2x - 1
2) y = -3/4 + 3
3) y = 4x + 9
4) y = - 5/3x - 2
Step-by-step explanation:
b = y - m*x
1) (-7,13) and slope: -2
b = 13 - (-2)*(-7)
b = 13 - 14
b = -1
2) (4,6) lope = -3/4
b = 6 - (-3/4)*(-4)
b = 6 - 3
b = 3
y = -3/4x + 3
3) (-5,-11) and (3,-7)
Slope: (1 - - 11)/(-2 - - 5) = 12/3
= 4
b = -11 - (4) (-5) = 9
b = 9
4) slope = (-7 - 8)/(3- - 6)
= -15/9 = - 5/3
b = 8 - (-5/3)*(-6)
b = 8 - 10
b = -2
explain how to multiply 641 by 63.
Answer:
sure
Step-by-step explanation:
1) line up 641 and 63
641
x__63_
2) multiply 3 by 1 then 4 then 6 and carry the tenths place number if there is one
1
641
x__63_
1923
3) add a zero under the 3 to hold the ones place and multiply 6 by 1 then 4 then 6 and since we’re working with the tenths place now and dont forget to carry numbers if you need to
2
641
x__63_
1923
38460
4) add your two numbers together
1 1
38460
+___1923_
40383
so that is your answer “40383”
lol sorry that this was so long
Answer:
The answer is 40,383
Step-by-step explanation:
First, you set up the multiplication. 641 is the largest number so it goes on top. 63 is the smallest number so it goes on the bottom. Draw your line. Next, you multiply 3 by 1 which is 3. Then you multiply 3 by 4 and you get 12. Since this is a two digit number, the 2 goes below the line and the 1 you place on top of the 6. Next, you multiply 3 by 6 and get 18, but don't forget the 1 you placed on top! So you get 19. Then you cross out the 1 on top of the 6 and cross out the 3. After you cross out the numbers you add a 0 under the 3 with the number that is under the line. Then you start multiplying 6x1 which is 6. 6x4 which is 24, place the 4 under the line and bring the 2 on top of the 6. Then multiply 6x6 which is 36, add the 2 you brought on top which is 38. After you did all that work, add all the numbers and your answer is 40,383! Hope this made sense and hope it helps! :3
plz help me
The container below contains 2 gray. 1 white, and 4 black marbles. Without looking, if Eric chooses a marble from the container will the probability be closer to O or to 1 that Eric will select a white marble? A gray marble? A black marble? Justify each of your predictions.
Step-by-step explanation:
Probability of Grey ball = 2/7 or 0.285. It is closer to 0
Probability of White marble = 1/7 or 0.142. It is closer to 0
Probability of Black marble = 4/7 or 0.571. It is closer to 1
Write 14 more then a number (pre algebra)
Answer:
14>4
Step-by-step explanation:
If we read this it literally says 14 is greater than 4. We always read left to right so if it was 14<4 it would be 14 is less than 4, which we know isn't true but just for an example.
b) You are saving for a vacation by taking $100 out of your paycheck each month and putting it into a savings account that pays 3% nominal interest, compounded monthly. How long will it take for you to be able to take that $3,000 vacation?
c) What is the equivalent effective interest rate for a nominal rate of 5% that is compounded...
i. Semi-annually
ii. Quarterly
Daily
iv. Continuously
b) It will take approximately 24.6 years to save $3,000 for your vacation by saving $100 each month with a 3% nominal interest rate compounded monthly.
c) equivalent effective interest rates are:
i. Semi-annually: 5.06%
ii. Quarterly: 5.11%
iii. Daily: 5.13%
iv. Continuously: 5.13%
EXPLANATION:
To calculate the time it will take for you to save $3,000 for your vacation, we can use the future value formula for monthly compounding:
\(Future Value = Principal * (1 + rate/n)^(n*time)\)
Where:
- Principal is the amount you save each month ($100)
- Rate is the nominal interest rate (3% or 0.03)
- n is the number of compounding periods per year (12 for monthly compounding)
- Time is the number of years we want to calculate
We need to solve for time. Let's substitute the given values into the formula:
\($3,000 = $100 * (1 + 0.03/12)^(12*time)Dividing both sides of the equation by $100:30 = (1.0025)^(12*time)\)
Taking the natural logarithm (ln) of both sides:
\(ln(30) = ln((1.0025)^(12*time))Using logarithmic properties (ln(a^b) = b * ln(a)):ln(30) = 12*time * ln(1.0025)\)
Solving for time:
\(time = ln(30) / (12 * ln(1.0025))\)
Using a calculator:
time ≈ 24.6
c)To calculate the equivalent effective interest rate for a nominal rate of 5% compounded at different intervals:
i. Semi-annually:
The effective interest rate for semi-annual compounding is calculated using the formula:
Effective Interest Rate = (1 + (nominal rate / number of compounding periods))^number of compounding periods - 1
For semi-annual compounding:
\(Effective Interest Rate = (1 + (0.05 / 2))^2 - 1\)
Calculating:
Effective Interest Rate ≈ 0.050625 or 5.06%
ii. Quarterly:
The effective interest rate for quarterly compounding is calculated similarly:
\(Effective Interest Rate = (1 + (0.05 / 4))^4 - 1\)
Calculating:
Effective Interest Rate ≈ 0.051136 or 5.11%
iii. Daily:
The effective interest rate for daily compounding is calculated using the formula:
Effective Interest Rate = (1 + (nominal rate / number of compounding periods))^number of compounding periods - 1
Since there are approximately 365 days in a year:
\(Effective Interest Rate = (1 + (0.05 / 365))^365 - 1\)
Calculating:
Effective Interest Rate ≈ 0.051267 or 5.13%
iv. Continuously:
The effective interest rate for continuous compounding is calculated using the formula:
\(Effective Interest Rate = e^(nominal rate) - 1\)
For a nominal rate of 5%:
\(Effective Interest Rate = e^(0.05) - 1\)
Calculating:
Effective Interest Rate ≈ 0.05127 or 5.13%
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Triangle DHG is a scale drawing of triangle AFB. Use a ruler. Measure and label the side lengths of triangle AFB and triangle DHG. What scale factor was used to make triangle DHG?
Divide the length of the longest side of triangle AFB by the longest side of triangle DHG to find the scale factor.
Triangle AFB: A=4 cm, B=5 cm, F=7 cm
Triangle DHG: D=2.8 cm, H=3.5 cm, G=4.9 cm
Scale factor = 7/4.9 = 1.43
Step by explanation
Step 1: Draw triangle AFB on a piece of paper.
Step 2: Measure the side lengths of triangle AFB and record them.
Step 3: Draw a second triangle, DHG, on the paper.
Step 4: Measure the side lengths of triangle DHG and record them.
Step 5: Divide the length of the longest side of triangle AFB by the longest side of triangle DHG to find the scale factor.
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***URGENT PLEASE! 20 POINTS***
Select the correct answer.
Consider this scatter plot.
Which line best fits the data?
A. line A
B. line B
C. line C
D. None of the lines fit the data well.
Answer:
C. line C
Step-by-step explanation:
You want the line that best fits the plotted data.
Best-fit lineA line of best fit can be determined to be "best" using any of several measures. Often, we want to minimize the squared error, the sum of squares of the vertical distance between a data point and the line.
Minimizing the error in this way tends to center the line between the points that would be the farthest from it. Here, line C is the one that runs through the vertical middle of the data set.
Line C is the best fit line, choice C.
<95141404393>
Sadie uses 9.8 pints of blue paint and white paint to paint her bedroom walls. 1 4 of this amount is blue paint, and the rest is white paint. How many pints of white paint did she use to paint her bedroom walls?
Answer:
7.35 pints
Step-by-step explanation:
If we use 1/4 of the 9.8 pints for blue, then the remaining white paint takes up 3/4 of the 9.8 pints of paint. To find how many pints of paint is equal to 3/4 of it, you must multiply that fraction by the amount (9.8).
\(\frac{3}{4}\) * 9.8 (or 0.75 * 9.8) = 7.35
Therefore, 7.35 pints of the total paint used is white.
Hope I helped! Please give me brainliest!
A kite is flying 10 ft. in the air. The angle of
elevation is 20°. How long is the kite string?
Answer:
wouldnt it be 10 lol since its 10 feet in the air
Step-by-step explanation:
what is the definition of an expression
Answer:
the process of making known one's thoughts or feelings.
Step-by-step explanation:
Next time you ask a question please tell us if it's in a math term or something, I did it in the Ela/reading term.
the process of making known one's thoughts or feelings.
For example, if you make someone laugh their expression would be happy or suprised. Expression is just a way of seeing someones thoughts and feelings.
Hope this helps!
Have a great day!
- Hailey: )
why are employees today in the transportation and shipping industry required to know advanced math?
Employees in the transportation and shipping industry today are required to know advanced math for several reasons. Here are some of the most important ones:
1. Efficiency: In the transportation and shipping industry, time is money. To maximize efficiency, workers need to be able to calculate distances, speeds, and travel times accurately.
This requires a solid understanding of advanced math concepts such as algebra, calculus, and trigonometry.
2. Safety: Transporting goods and people comes with risks. To ensure safety, employees need to understand the physics of motion, forces, and momentum.
This requires knowledge of advanced math concepts such as vectors, kinematics, and dynamics.
3. Technology: The transportation and shipping industry is becoming increasingly automated and technology-driven. Employees need to be able to understand and use complex algorithms, statistical models, and data analysis tools.
This requires advanced math skills such as statistics, probability theory, and linear algebra.
4. Regulations: The transportation and shipping industry is subject to a wide range of regulations, including safety standards, environmental laws, and trade policies.
Compliance with these regulations often requires complex calculations and data analysis. Advanced math skills are essential for navigating this regulatory landscape.
In summary, advanced math skills are essential for employees in the transportation and shipping industry to ensure efficiency, safety, technology adoption, and compliance with regulations.
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Two observers are 300 ft apart on opposite sides of a flagpole. The angles of
elevation from the observers to the top of the pole are 20°
and 15°. Find the
height of the flagpole.
The volume of this cylinder is 2880π cm3.
Find the length of the radius, r.
Give your answer as a surd in its simplest form.
Step-by-step explanation:
\(volume \: of \: cyinder = \pi{r}^{2}h \\ \pi {r}^{2} \times 120cm = 2880\pi {cm}^{3} \\ {r}^{2} = 24 \: {cm}^{2} \\ r = \sqrt{24} \: = 4.899 \: cm\)
Consider the graph of the function f{x} = -{2}^x + 4
What is the range of function f?
The range of the function f(x) = \(-2^{x}\) + 4 is -∞ < y < 4.
What is range of a function?
All potential values for y are included in a function's range. The equation to determine a function's range is Y = f. (x). If every x value has exactly one y value, then it is merely a function in a relation.
We are given a function which is defined as f(x) = \(-2^{x}\) + 4.
We know that range is the output we get after substituting the value of x.
So, in this situation, we will get the value for y less than 4 or equal to 4 because when x = 0, we will get 4 and when x = 1, we will get 2 as there is a minus sign before 2 due to which this will be always a negative value.
Thus, the range of the function will be -∞ < y < 4.
Hence, the third option is the correct option.
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Can someone please help me with this
Answer:
its the 3rd one
Step-by-step explanation:
What is the solution to 6(1+3) < 3(21+6)?
\(6(1+3) < 3(21+6)\)
\(6(1+3)\\6(4)\\=24\)
_______
\(3(21+6)\\3(27)\\=81\)
\(24 < 81\)
\(\fbox{True}\)
Hope this helps!
solve the equation 15 < b - 4
Answer:
b>19
Step-by-step explanation:
15<b−4
Rewrite so b is on the left side of the inequality.
b−4>15
Move all terms not containing b to the right side of the inequality.
Add 4 to both sides of the inequality.
b>15+4
Add 15 and 4.
b>19
b>19
The result can be shown in multiple forms.
Inequality Form:
b>19
Interval Notation:
(19,∞)
What is the quadratic polynomial whose sum and the product of zeroes is 2 â…“ respectively?.
Zero of the quadratic polynomial whose X²+3X+2 are -2 and -1.
Sum of zeros ( alpha + beta) = -3
Product of zeros ( alpha × beta) = 2.
Quadratic polynomial = X²-(alpha + beta)X+ Alpha× beta = X²-(-3)X+2.
= X²+3X+2 is the required quadratic polynomial.
A = 1 , b = 3 , C = 2
X²+ 3X +2
X² + 2X+ X + 2
X(X+2) +1 ( X+2)
(X+2). ( X+1)
X+2 = 0. X+1 = 0
X = -2. X= -1
Zero of the quadratic polynomial whose X²+3X+2 are -2 and -1.
A polynomial is described as an expression that consists of variables, constants, and exponents, which might be mixed with the use of mathematical operations along with addition, subtraction, multiplication, and department (No division operation by a variable).
In arithmetic, a polynomial is an expression that includes indeterminates and coefficients, that entail best the operations of addition, subtraction, multiplication, and fine-integer powers of variables. An instance of a polynomial of an unmarried indeterminate x is x² − 4x + 7.
Polynomials are sums of phrases of the form k⋅xⁿ, in which okay is any wide variety and n is a positive integer. for example, 3x+2x-5 is a polynomial. advent to polynomials.
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Complete Question:
Find a quadratic polynomial, the sum, and the product of whose zeroes are -3 and 2 respectively. hence find the zero
Find the perimeter. Simplify the answer
Answer:
Perimeter = 16c + 24
Step-by-step explanation:
Perimeter = 4c + 7 + 4c + 7 + 8c + 10
Perimeter = 16c + 14 + 10
Perimeter = 16c + 24
-Chetan K
16c + 24
Step-by-step explanation:
To Find the perimeter we add
all the sides,
= > 4c + 7 + 4c + 7 + 8c + 10
= > 16c + 24...ans
Hope it Helps you!!The three angles in a triangle have measures of 55°, 75°, and (2x)°. What is the value of x?
Answer:
x = 25
Step-by-step explanation:
The angles in a triangle add up to 180°, so we can write an equation to model the situation:
55 + 75 + 2x = 180
Now, we can simplify and solve:
130 + 2x = 180
2x = 50
x = 25
Answer:
x = 25
Step-by-step explanation:
The angles in a triangle add up to 180 degrees.
Using this, create an equation:
55 + 75 + 2x = 180
Solve for x:
55 + 75 + 2x = 180
130 + 2x = 180
2x = 50
x = 25
So, x = 25
help with this question please
Answer
hi
Step-by-step explanation:
Let R be the region in the first quadrant bounded by the graph of y = Vx - 1. the x-axis, and the vertical line * = 10. Which of the following integrals gives the volume of the solid generated by revolving R about the y-axis? (A) = L " (x - 1) dx (B) - L" (100 - (x - 1) dx (C) 10 dy (D) * 100 dy
L " (x - 1) dx integrals gives the volume of the solid generated by revolving R about the y-axis
Which one is generated by revolving R about the y-axis?The integration or antiderivative processes can be used to determine the curve's area under it. For this, we require the curve's equation (y = f(x)), the curve's axis boundary, and the curve's border limitations.
Let R be the area in the first quadrant enclosed by the hyperbolas xy = 1 and xy = 3, the lines y = x and y = 3x, and the lines xy = 1. The third quadrant is also constrained by those four curves, which we are ignoring. xy dA. = 1 v .
Let R be the region in the first quadrant bounded by the graph of y = Vx - 1. the x-axis, and the vertical line * = 10.
= L " (x - 1) dx integrals gives the volume of the solid generated by revolving R about the y-axis
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May someone please help me with this :)
Answer:
24
Step-by-step explanation:
6+8=14 14+10=24
a sample of 50 drills had a mean lifetime of 12.68 holes drilled when drilling a low-carbon steel. assume the population standard deviation is 6.83. what sample size (i.e., how many) would you need to have so that a 95% confidence interval will have a margin of error of 1.0?
Using the z-distribution, it is found that the 95% confidence interval for the mean lifetime of this type of drill, in holes drilled, is (10.4, 13.94).
We are given the standard deviation for the population, hence, the z-distribution is used. The parameters for the interval is:
Sample mean of \(x = 12.7\)
Population standard deviation of \(\sigma = 6.37\)
Sample size of .n = 50
The margin of error is:
\(M = z \frac{\sigma }{\sqrt{n} }\)
In which z is the critical value.
We have to find the critical value, which is z with a p-value of \(\frac{1+\alpha }{2}\) , in which \(\alpha\) is the confidence level.
In this problem, , thus, z with a p-value of , which means that it is z = 1.96.
Then:
\(M= 1.96\frac{6.37}{\sqrt{50} } = 1.77\)
The confidence interval is the sample mean plus/minutes the margin of error, hence:
x- M = 12.17 - 1.77 =10.4
x+M = 12.17 + 1.77 = 13.94
The 95% confidence interval for the mean lifetime of this type of drill, in holes drilled, is (10.4, 13.94).
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Which measure of central tendency is most appropriate when it is desired to minimize the effect of a few extreme (very high or very low) scores?group of answer choicesmedian
When it is required to minimize the effect of a few extreme scores, median is the measure of central tendency which is the most appropriate.
This is due to the fact that the median isn't influenced by extreme values, which means it is the middle value when the observations are ordered from least to greatest.There are several measures of central tendency, including the mode, median, and mean.
The most common measure is the mean, but it is greatly affected by the presence of a few very high or very low scores.To ensure that the mean isn't skewed too much by these scores, the median is a better choice. The median is the middle number in a data set when the observations are sorted from smallest to greatest.
In this way, if there are extremely high or low scores, they are not going to influence the median significantly as compared to the mean. Hence, we can say that the median is the most appropriate measure of central tendency when it is desired to minimize the effect of a few extreme scores.
The measure of central tendency that is most appropriate when it is desired to minimize the effect of a few extreme (very high or very low) scores is the median.
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Alan mixes cups of milk with a can of condensed soup. he makes a total of cups of soup. how many cups of condensed soup were in the can?
1 (7/24) cups of condensed soup were in the can.
Given,
There is a can of condensed soup .
The amount of milk Alen mixes with the condensed soup = 1 1/3
Subtract amount of milk from total cups of soup:
2 ( 5/8 ) – 1 ( 1/3 )
Make the fraction in same form to make the subtraction easy.
2 ( 5/24 ) – 1 ( 8/24 )
Now solve
2 (15/24 ) – 1 ( 8/24 )= 1 ( 7/24 )
Here, there is 1 ( 7/24 ) cups of condensed soup in the can.
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The question is incomplete. And the corrected question is given below.
Alan mixes 1 1/3 cups of milk with a can of condensed soup. he makes a total of 2 5/8 cups of soup. how many cups of condensed soup were in the can?
The population of a town grows at a rate proportional to the population present at time t. The initial population of 500 increases by 15% in 10 years. What will be the population in 50 years? (Round your answer to the nearest person.)____ personsHow fast is the population growing at t = 50? (Round your answer to two decimal places.)______ persons / year
Answer:
Step-by-step explanation:
I think is 75 persons 14 persons/ year
She must determine height of the clock tower using a 1.5 m transit instrument (calculations are done 1.5 m above level ground) from a distance 100 m from the tower she found the angle of elevation to be 19 degrees. How high is the clock tower from 1 decimal place?
Step-by-step explanation:
We can use trigonometry to solve this problem. Let's draw a diagram:
```
A - observer (1.5 m above ground)
B - base of the clock tower
C - top of the clock tower
D - intersection of AB and the horizontal ground
E - point on the ground directly below C
C
|
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| x
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|
|
-------------
|
|
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|
|
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B
|
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A
```
We want to find the height of the clock tower, which is CE. We have the angle of elevation ACD, which is 19 degrees, and the distance AB, which is 100 m. We can use tangent to find CE:
tan(ACD) = CE / AB
tan(19) = CE / 100
CE = 100 * tan(19)
CE ≈ 34.5 m (rounded to 1 decimal place)
Therefore, the height of the clock tower is approximately 34.5 m.
The temperature is -2°C. If the temperature rises by 15°C, what is the new temperature?
Do not include units (°C) in your answer
Answer:
13
Step-by-step explanation:
-2 + 15 = 13
hope this helps...