Answers
they want 20 characters n stuff but if you want me to show work or whatever i can
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Multiply each side by 4
4 * x/4 ≥ -8 * 4
x ≥ -32
Related Questions
In the xy-plane, if (-1, 0) is a solution to the system of inequalities y < x + c and y < -x - d, which of the following must be true about c and d? (10 POINTS + BRAINLIEST ANSWER!!)
A. c = d
B. c = -d
C. c < d
D. d < c
Answers
Final answer:
By substituting the point (-1, 0) into the inequalities, we find that c must be greater than 1, and d must be less than 1, which means the correct answer is D. d < c.
Explanation:
We are given a point (-1, 0) which is a solution to both inequalities y < x + c and y < -x - d. To find the relationship between c and d, let's plug in the x and y values of the point into each inequality.
For y < x + c, with x = -1 and y = 0, we get:
0 < -1 + c
c > 1. (1)
For y < -x - d, with x = -1 and y = 0, we get:
0 < 1 - d
d < 1. (2)
Comparing (1) and (2), we see that c must be greater than 1 and d must be less than 1. Thus, the correct answer is D. d < c.
Determine, for vectors u = i + 2j − k, v = −i + j + k, w = i + k (a) a unit vector in the direction u + 2v − 3w
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v=-i+j+k
w=i+k
thus:
u+2v-3w
i+2j-k+2(-i+j+k)-3(i+k)
=i+2j-k-2i+2j+2k-3i-3k
=i-2i-3i+2j+2j-k+2k-3k
=-4i+4j-2k
Clare's teacher has a box of 180 stickers for a group of students to share equally. Does each student get more stickers if there are 6 students or if there are 9 students
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EASY 5POINT MATH QUESTION PLEASE SOLVE
use the relationship between the angles in the figure to answer the question
which equation can be used by find the value of x?
drag and drop the equation into the box
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Answer: x = 180 - (31 + 40)
Hope this helps!
~VERNEX
You read that the median equals 12 on a test, what percentage of the participants had scores higher than 12
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The median cuts the data into two halves, since the median is the center-most value. The scores higher than 12 make up half (50%) of the data while scores less than 12 make up the other 50%
Terry just bought a used car with only 28,500 miles on it and it cost $8,200. Every year Terry expects to put another 14,000 miles on the car. Unfortunately, the car’s value will depreciate by 15% per year. How much will the car be worth when it has 100,000 miles on it? Explain your work.
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.. $8200*0.43605 ≈ $3706
_____
The difference between 100k miles and 28.5k miles is 71.5k miles. It is "used up" at the rate of 14k miles per year, so the time it takes to do that is 71.5/14 ≈ 5.1 years.
Each year the car depreciates 15%. That is, its value is multiplied by 1 -15% = 0.85. In 5.1 years, the original value will be multiplied by 0.85^5.1. (Remember, exponentiation is repeated multiplication.)
Which graph shows a line that is perpendicular to line AB?
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Factor the polynomial completely. 4x3 – 12x2 + 7x – 21 4x2(x – 3) + 7(x – 3) Which is the completely factored polynomial? 4x2(x + 4) 3x2(x – 3) (4x2 – 7)(x + 3) (4x2 + 7)(x – 3)
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factor: 4x²(x-3)+7(x-3)
factor again: (x-3)(4x²+7)
The correct answer for this problem would be D. (4x^2 + 7)(x – 3) .
Hope this helps and clears up any confusion!
Can you please help me with this that’ll you so much
Answers
=1/3 + 1/8 + 5/12
need a common denominator (24)
=8/24 + 3/24 + 10/24
=21/24
simplify by 3
=7/8 like basketball, football & soccer
7/8 is the total for basketball, soccer and football. If 8/8 represents the whole class, then subtract 7/8 from 8/8 to find the number who like baseball.
=8/8 - 7/8
=1/8 of the remainder likes baseball
ANSWER: 1/8 of the students like baseball
Hope this helps! :)
Algebra 2 help?
5. A construction explosion has an intensity I of 1.25 x 10–4 W/m2. Find the loudness of the sound in decibels if W/m2. Round to the nearest tenth. (1 point)
81 decibels
161 decibels
82.2 decibels
12.5 decibels
The example question in the textbook is totally different so I'm not sure how to do this. I tried to make the equation and then got confused. An explanation would be great! Thanks
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To solve this, we will use the formula : dB = 10 x log (Isig/Iref)
terms will be:dB= decibels,
Isig = signal's intensity
Iref= softest sound's intensity which is 10^-12.
So the solutions is,dB = 10 x log (1.25 x 10–4 / 10^-12 )
= 80.97 decibels
=81 decibels
Answer:
1. B) logb(q^2t^8)
2. D) None of these (it is actually log (x^4/(x+2)^6) :D)
3. B) log5(7)+5log5(a)
4. C) 6.209
5. A) 81 decibels
Step-by-step explanation:
trust me bro
What is the measure of AE?
No explanation is needed, also, sorry if the picture is blurry!
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make sure your calculator is in Degree mode.
In circle K, what is the value of x?
x = 30°
x = 25°
x = 20°
x = 15º
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Hope this helps :D
Answer:
The correct option is 4.
Step-by-step explanation:
Given information: K is the center of the circle. AB is the diameter of the circle.
Angle subtended by a diameter is always a right angle. It the means the measure of that angel is 90 degree.
[tex]\angle C=90^{\circ}[/tex]
According to the angle sum property, the sum of interior angles of a triangle is 180 degree.
Using angle sum property in triangle ABC, we get
[tex]\angle A+\angle B+\angle C=180^{\circ}[/tex]
[tex]75^{\circ}+x+90^{\circ}=180^{\circ}[/tex]
[tex]x=15^{\circ}[/tex]
Therefore the measure of x is 15 degree. Option 4 is correct.
A small fishing boat's outboard motor requires a mixture of gasoline and oil for fuel. The mixture called for in the owner's manual is 1 gallon of oil for every 50 gallons of gas. If the boat's gas tank holds approximately 6 gallons of gas, approximately how much oil must be added to the gasoline?
3 ounces
9 ounces
15 ounces
24 ounces
Answers
20 POINTS!! EASY QUESTION! WILL MARK BRAINLIEST!! READ THE INFO! THEN FILL IN THE BLANKS!
The cost for a single class session for each dance class is below.
Clodagh’s Dance = $6.00
New Steps = $7.50
Stepping High = $6.50
The class hours are below.
Clodagh’s Dance = 3:00pm - 4:00pm
New Steps = 4:00pm - 5:30pm
Stepping High = 9:00am - 10:15am
How would these answers change if you were to write the unit rate in cost per hour?
Fill in the blanks!
Dance Classes | Total Hours for Each Payment | Cost Per Hour
| |
Clodagh’s Dance | $6.00 | $6.00
New Steps | $7.50 | _____
Stepping High | $6.50 | _____
Answers
rate=(Type of session)/(time taken)
the rate for:
a]
Clodagh's Dance
Payment=$6.00
Time=1 hours
rate=6/1=6 dollars/hours
b]
New steps
payment=$7.50
Time =1.5 hours
rate=7.5/1.5=5 dollars/hour
c]
Stepping high
Payment=$6.50
Time=1.25 hours
rate=6.5/1.25=5.2 dollars/ hours
Graph the function f(x)= square root over x. Which table of values contains points that lie on the graph of the function?
Answers
Answer:
see attached
Step-by-step explanation:
The square root of a negative number is undefined, so the applicable table is the one shown below.
Answer:
Table 3 represents the correct points that lie on the graph of the function.
Step-by-step explanation:
We are given the function:
[tex]f(x) = \sqrt{x}[/tex]
We have to plot the given function.
The attached image shows the graph for the given function.
Putting values for x in the function we get:
[tex]f(x) = \sqrt{x}\\f(-1) = \sqrt{-1}[/tex]
which is undefined.
[tex]f(0) = \sqrt{0} = 0\\f(1) = \sqrt{1} = 1[/tex]
Table 3 represents the correct points that lie on the graph of the function.
Evaluate the geometric series
Answers
2^(1-1) + 2^(2-1) + 2^(3-1) + 2^(4-1) + 2^(5-1) + 2^(6-1) + 2^(7-1) + 2^(8-1)
= 1 + 2 + 4 + 8 + 16 + 32 + 64 + 128 = 255
For every pound a company spends on advertising, it spends £0.26 on its website. Express the amount spent on advertising to the amount spent on its website as a ratio in its simplest form.
Answers
If we use the values in the problem, we have a ratio of 1:0.26. The problem is that we have a decimal value and we should use whole numbers.
Start by multiplying each value by 100 to eliminate the decimal.
We have 100:26.
Now, each value contains a factor of 2. So divide by 2 and we get 50:13.
Answer:
50:13
Step-by-step explanation:
what transformation changes the graph of y= x^3-x-6 into the graph of y=x^3-x?
Answers
The Hamden board of education wants to know how the community feels about building a new media center for the middle school. They called every tenth person on the registration list of 7,300 voters until they had called a total of 40 voters. Which of the following are true of the sample of 40 voters? Check all that apply.
The sample is not randomly chosen.
The sample should be larger to give more reliable information.
The sample size is too large to make inferences.
The sample size is too small to represent the population.
The sample size is too small and will show larger variation.
The sample is invalid because it randomly chooses voters.
The sample size is too small and can lead to false inferences.
Answers
The sample is not randomly chosen (FALSE)
Given that the statement doesn't tell us anything about the way they choose the sample, it is reasonable to conclude that this is a randomly chosen. They called every tenth person on the registration list until the number of people was 40.
The sample should be larger to give more reliable information (TRUE)
You did not have to use mathematics to determine that you would need more information to get a conclusion. You must increase the sample, that is, the sample must be larger to give a reliable information.
The sample size is too large to make inferences (False)
This is explained in the previous item. If the sample should be lager is because the size is not too large.
The sample size is too small to represent the population (TRUE
This is true because 40 voters represent barely 0.5% of the entire list. This list has 7300 voters, so getting the conclusion from this sample doesn't provide with a strong conclusion.
The sample size is too small and will show larger variation. (FALSE)
Although the sample size is too small, the sample size not necessarily will show variation. In fact, it is possible that it does not show any variation and most of the people feel well about building a new media center for the middle school but it doesn't mean that the whole community does.
The sample is invalid because it randomly chooses voters. (FALSE)
It is false because in probability studies the sample is chosen randomly, so you get conclusions about the whole population always taking samples that represent the population as a whole.
The sample size is too small and can lead to false inferences (TRUE)
You can get false conclusions given that the sample size is too small. It's important to note that the sample size supports the conclusion of the study, so the sample must increase to have a reliable study.
The sampling method used by the Hamden board of education was systematic, not random, and the sample size of 40 voters out of a population of 7,300 is too small to produce reliable conclusions regarding the community's opinion about building a new media center.
Explanation:The quality of conclusions drawn from opinion polls largely depends on the methods used to choose a sample and the sample size. When the Hamden board of education sampled every tenth person from the registration list of 7,300 voters to reach 40 voters, they applied a systematic sampling method, as opposed to a truly random sample. While systematic sampling can be used as an approximation of random sampling, this method still poses a risk of introducing bias if there are hidden patterns in the voter registration list.
The sample size is indeed critical for the reliability of the poll. In this case, surveying only 40 voters out of 7,300 is too small to capture the diverse opinions of the entire voter population, which may lead to false inferences and less confidence in the results. For public opinion polls, especially on matters like building a new media center, a larger sample would provide more reliable information and reduce the potential variation that can arise from a smaller sample. Industry standards suggest varying sizes that can balance the accuracy and cost-effectiveness, often ranging from 500 to 2,500 respondents or more depending on the desired level of accuracy.
Learn more about Sampling Methods and Sample Size here:https://brainly.com/question/39338704
#SPJ3
Which of these is equal to sin 21°?
A) cos 21°
B) cos 69°
C) sin 69°
D) tan 69°
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Work Shown:
cos(90-x) = sin(x)
cos(90-21) = sin(21)
cos(69) = sin(21)
Answer:
B. Cos 69°
Step-by-step explanation:
Given : sin 21°
Solution : To show how Cos 69 ° = Sin 21 °
we will use sine and cosine trigonometric identity
i.e. Cos (90 °-x) = Sin x ---(A)
We are given Sin 21 °
So, putting x =21 ° in (A)
We are getting : Cos(90 °-21 °) = Sin 21 °
⇒Cos 69 ° = Sin 21 °
Hence it is shown that Cos 69 ° = Sin 21 °
The shortest distance from a point to a straight line is
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How many ways can 6 basketball players be listed in order in a program?
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Determine if the graph of r = 4cos 5θ is symmetric about the x-axis, the y-axis, or the origin.
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Answer:
y-axisStep-by-step explanation:
The function graph is symmetric about
- the y-axis when it is an even function
- the origin when it is an odd function.
A symmetrical graph about the x-axis is not a function graph.
f(x) is an even if and only if f(-x) = f(x).
f(x) is an odd if and only if f(-x) = -f(x).
We have the function r(θ) = 4cos(5θ)
(olny symmetry about the y-axis or about the origin)
Check r(-θ):
r(-θ) = 4cos(5(-θ)) = 4cos(-5θ) = 4cos(5θ)
used cos(-x) = cos x
We have r(-θ) = r(θ). Therefore the graph of r(θ) is symmetric about the y-axis.
Answer:
x-axis
Step-by-step explanation:
if r%28theta%29+=+r%28-theta%29.
Since 4cos%285%2Atheta%29+=+4cos%28-5%2Atheta%29, the graph is symmetric wrt the x-axis.
The graph is symmetric wrt the y-axis if r%28theta%29+=+r%28pi-theta%29.
Since 4cos%285%2Atheta%29+%3C%3E+4cos%285%2A%28pi+-+theta%29%29+=+-4cos%285%2Atheta%29+, the graph is not symmetric wrt the y-axis.
The graph is symmetric wrt the y-axis if r%28theta%29+=+r%28pi%2Btheta%29.
Since 4cos%285%2Atheta%29+%3C%3E+4cos%285%2A%28pi+%2B+theta%29%29+=+-4cos%285%2Atheta%29+, the graph is not symmetric wrt the origin.
8.42 x 10^3, Between which of the following pairs of numbers does the above number lie? A. .0083 and .0084 B. .0084 and .0085 C. 8300 and 8400 D. 8400 and 8500
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Use PEMDAS (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction)
Solve exponent first
8.42 x 10^3
8.42 x 1000
Solve the rest
8.42 x 1000
8420
8420 is between
D.) 8400 and 8500
The number 8.42 x 10³ lies in between pairs of numbers 8400 and 8500.
Option D is correct.
What is PEDMAS?The abbreviation PEMDAS is used to indicate the sequence of steps to be taken when resolving expressions with multiple operations.
PEMDAS stands for P- Parentheses, E- Exponents, M- Multiplication, D- Division, A- Addition, and S- Subtraction.
We have the number 8.42 x 10³.
Now, expanding the exponents we get
= 8.42 x 10³
= 8.42 x 1000
= 84.2 x 100
= 842 x 10
= 8420
Thus, the values lie between 8400 and 8500.
Learn more about PEDMAS here:
https://brainly.com/question/24086845
#SPJ3
which of the following expressions is equal to the height, h, of this triangle?
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[tex]25 \cos(56) [/tex]
Which is the graph of f(x)= square root of x
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The answer for f(x) = sqrt x is the image below. It is neither of these, so check to see if you have more answer choices. (Just make sure to pay attention to the x- and y-values that the graph is plotted on below)
I hope this helps :))
1 question need help thank you!!
Answers
____________________________________________________
Explanation:
_____________________________________
Given: " (x + 3)(x – 8) " ; expand :
______________________________________
Note: (a + b) (c + d) = ac + ad + bc + bd .
_____________________________________
a = x ;
b = 3 ;
c = x
d = 8
_______________________________________
" (x + 3)(x – 8) " ;
= (x * x) + ( -8 * x) + ( 3 * x ) + (3 * -8) ;
= x² + (-8x) + 3x + (-24) ;
= x² – 8x + 3x – 24 ;
→ Combine the "like terms" :
– 8x + 3x = – 5x ;
And simplify the expression;
to get:
→ " x² – 5x – 24 " ; which is: Answer choice: [D]: " x² – 5x – 24 " .
________________________________________________________
The hypotenuse of a 45°-45°-90° triangle measures 7√2 units.
What is the length of one leg of the triangle?
A. 7 units
B. 7√2 units
C. 14 units
D. 14√2 units
Answers
Answer:
Option A is correct.
Step-by-step explanation:
Given:
Angle of the right angles triangle are 45° , 45°, 90°
Length of the Hypotenuse = 7√2 units.
To find: Length of the one leg of the triangle.
Since two angles of the triangles are equal.
⇒ Opposite sides to equal angles are also equal.
We have Isosceles right angled triangle.
⇒ both legs are equal.
Let x be the length of the leg
using Pythagoras theorem,
(7√2)² = x² + x²
2x² = 49 × 2
x² = 49
x = ±7
Length cannot be negative so, x = 7
Therefore, Option A is correct.
How can you use factoring to solve quadratic equations in standard form?
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Solve 2x^2 - 3x - 20 = 0
multiply the first and last numbers:- 2 * -20 = -40
Note that -40 = -8 * 5 and -8 + 5 = -3 ( the 'middle' number in the standard form)
so we write:-
2x^2 - 8x + 5x - 20 = 0
2x(x - 4) + 5(x - 4) = 0
(2x + 5)(x - 4) = 0
giving 2x + 5 = 0 or x - 4 = 0
giving the roots x = -2.5 and x = 4
help please asap! BRAINLIESTTTTT
2 QUESTIONS!
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2nd one Is the vertex is the highest point and would the the max amount of larvae produced. SO this answer is B