NEED HELP ASAP!!! Which graph represents the given inequality? 3x -7y < -21
Answers
Short answer: The first graph, A.
Why?
The equation 3x - 7y < -21 is a dotted line that passes through -7 on the axis. Therefore, the correct answer is A.
Hope this helped you! ♥
Answer:
Step-by-step explanation:
Given the inequality
3x —7y <—21
Make y subject of formulae to know the slope and intercept on y axis
—7y < —3x — 21
Divide through by -7, note the inequalities sign will change since we are dividing with a negative
Then,
y > 3x/7 + 3
Then, the intercept is 3 and the slope is 3/7 when compared to equation of a line y = mx + c
We know that
y is greater than 3x/7 + 3, so the upper part should be shaded since y is greater than 3x/7 + 3
Then, option B and C are wrong since the below is shaded
Let find the intercept on the x axis to know the answer between A and B
I.e. when y = 0
3x —7y <—21
3x < —21
x < -7, then, line should pass through the negative of x and not positive x
So, the first option (A) is correct
Related Questions
Determine which function has the greatest rate of change over the interval [0, 2].
Answers
Rate of change of [tex]a[/tex]:
From the graph we can infer that the end points are (0,1) and (2,4). So lets use our slope formula to find the rate of change of [tex]a[/tex]:
[tex]m= \frac{y_{2}-y_{1}}{x_2-x_1} [/tex]
[tex]m= \frac{4-1}{2-0} [/tex]
[tex]m= \frac{3}{2} [/tex]
[tex]m=1.5[/tex]
The average rate of change of the function [tex]a[/tex] over the interval [0,2] is 1.5
Rate of change of [tex]b[/tex]:
Here the end points are (0,0) and (2,2)
[tex]m= \frac{2-0}{2-0}[/tex]
[tex]m= \frac{2}{2} [/tex]
[tex]m=1[/tex]
The average rate of change of the function [tex]b[/tex] over the interval [0,2] is 1
Rate of change of [tex]c[/tex]:
Here the end points are (0,-1) and (2,0)
[tex]m= \frac{0-(-1)}{2-0}[/tex]
[tex]m= \frac{1}{2} [/tex]
[tex]m=0.5[/tex]
The average rate of change of the function [tex]c[/tex] over the interval [0,2] is 0.5
Rate of change of [tex]d[/tex]:
Here the end points are (0,0.5) and (2,2.5)
[tex]m= \frac{2.5-0.5}{2-0} [/tex]
[tex]m= \frac{2}{2} [/tex]
[tex]m=1[/tex]
The average rate of change of the function [tex]d[/tex] over the interval [0,2] is 1
We can conclude that the function that has the greatest rate of change over the interval [0, 2] is the function a.
Answer:
what the other guy said
Step-by-step explanation:
triangle ABC is similar to Triangle XYZ.
AB=9.7, BC=9.6, AC=15.1
YZ=118.8, Find XZ
triangle ABC is similar to Triangle XYZ.
AB=9.7, BC=9.6, AC=15.1
YZ=118.8, Find XZ
Answers
Since the triangles are similar, the ratio of their angles is the same. This means the ratio of BC to YZ will be the same as the ratio of AC to XZ; using this to set up a proportion,
9.6/118.8 = 15.1/x
Cross multiply:
9.6*x = 118.8(15.1)
9.6x = 1793.88
Divide both sides by 9.6:
9.6x/9.6 = 1793.88/9.6
x = 186.8625
on a protractor there are two scales read 1 scale to find 44 what is the measure on the scale
Answers
Which of the following is a statistical question?
A.
How much money is in Althea's pocket?
B.
How tall is the tallest building in the United States?
C.
What is the temperature in the refrigerator?
D.
What were the grades on the history final exam?
Answers
What is the size of the angle in the shaded triangle marked by the arrow
Answers
What best describes the expression y over 3?
A. 3 more than some number
B. Some number times 3
C. Some number divided by 3
D. 3 less than some number
Answers
A represents addition, y + 3
B represents multiplication, y * 3
D represents subtraction, y - 3
A student attempted to generate an equivalent expression using the distributive property, as shown below:
6(m + 3) = 6m + 3
What was the mistake made?
A. 6 was not multiplied by m
B. Incorrect sign was used for the first term
C. Incorrect sign was used for the second term
D. 6 was not multiplied by 3
Answers
Look at them one at a time
Choice A
The result of multiplying 6 and m together (which is what you are supposed to do is 6m). This step is correct.
Choice B
There are no minus signs anywhere, either outside or inside the brackets, B is incorrect. Minus signs cannot be manufactured out of thin air. You need a reason.
Choice C
Same as B.
D is the correct answer. Both sides of a plus or minus sign have to be multiplied by what is outside the brackets. The plus sign cannot be destroyed unless you started out with something like
6 ( 4m + 3m) which = 24m + 18m = 42m But you could have combined like terms in the beginning.
6 * 7m = 42m
.
which expression is equivalent 121x^2-64y^2 ?
Answers
a window cleaner charges a call out fee of £3 plus 25p per square metre of glass cleaned. a front window in a butcher's shop measures 3.5 m by 6 m. how much does it cost to get 2 of these windows cleaned?
Answers
Below are the data collected from two random samples of 100 members of a large travel club regarding the type of vacation they prefer: Sample Adventure Beach Cruise Ski A 73 4 18 3 B 71 6 22 1 Which of the following inferences can be made based on the data?
Most members prefer a beach vacation.
Most members prefer a cruise vacation.
More members prefer a cruise vacation and a ski vacation than a beach vacation.
More members prefer a beach vacation and a cruise vacation than an adventure vacation.
Answers
There are a total of 18+3+22+1=44 people that prefer a cruise or ski vacation, while 4+6=10 people that prefer a beach vacation.
Answer:
More members prefer a cruise vacation and a ski vacation than a beach vacation.
Step-by-step explanation:
Negative numbers do not need the negative sign (-) in front of them. True False
Answers
Answer: False.
Explanation: All negative number need the negative sign (-) in front of them because if there is no sign, than the negative number would turn out to be a positive number.
find the value of this expression if x= -6 and y=1. xy^2/-7
Answers
Hope it's right
x=-6
y=1
xy^2/-7
substitute the values;
-6*1/-7 = 6/7 = 0.857
Which system of equation can represent the equation?
Answers
The logarithmic property of base change given that
logx (b) = logc (b) / logc (x)
Therefore, the same property applies to this problem and the correct expression for this question is:
y1 = log (x + 3) / log 4
y2 = log (2 + x) / log2
a car is driving a cross-country traveled 180 miles in 4 hours. at this rate of speed, how many miles farther will the car travel in the next three hours?
Answers
A motorboat covers the distance from one pier to the other pier in 4 hours and the way back in 5 hours. What is the speed of the boat in still water, if it covers 70 km with the current in 3.5 hours?
(its not 20 i tried)
Answers
r + c = speed with current
r - c = speed against current
3.5(r + c) = 70
r + c = 20
c = 20 - r
4(r + c) = distance from pier to pier
5(r - c) = distance from pier to pier
4(r + c) = 5(r - c)
4(r + 20 - r) = 5(r - 20 + r)
80 = 10r - 100
180 = 10r
18 = r
The speed in still water is 18 km/hour
find the missing dimension. use the scale factor 5:8
Answers
5 : 8
1.5 : x
[tex]5x = 12 \\ x = 2.4[/tex]
Answer : Actual length = 2.4m
Question 15
5 : 8
x : 20
[tex]8x = 100 \\ x = 12.5[/tex]
Answer : Actual length = 12.5m
Hope this helps. - M
Put the following equation in slope intercept form. 10x - 5y = -20 Is the correct answer y = 2x + 4?
Answers
Add five y on both sides so u get
10x=-20+5y
Add 20 on both sides
10x+ 20= 5y
Divide by five
2x+4=y
So yes, u were correct
which is a ABBC pattern?
Answers
Answer:
90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you
Step-by-step explanation:
Of the 3,558 people impaired drivers killed in 2009 (not counting the drivers themselves) death were preventable
Answers
Final answer:
The preventable nature of deaths caused by impaired driving, emphasizing the impact of alcohol and other risky behaviors on driving safety.
Explanation:
Each day in the United States, over 8 people are killed and 1,161 injured in crashes reported to involve a distracted driver, highlighting a significant public health concern. There is a noted problem with young drivers getting into serious automobile accidents, contributing to many preventable deaths.
It has been estimated that 35 percent of all U.S. early deaths in 2000 could have been avoided by changing just three behaviors, with alcohol being a significant contributing factor to risky behavior on the roads.
In 2014, alcohol-impaired driving fatalities accounted for 9,967 deaths, which is 31% of overall driving fatalities, underscoring the critical need for improved driving safety measures and individual behavior changes to reduce these numbers.
Plzz help me
Match the system of the equation to the number of solutions.
y = 5
2x - 2/3y = 10
1. No solutions
2. One solution
3. Infinite solutions
Answers
They have different slopes and therefore must have one solution.
what Is 12 divided by 1/3
Answers
When you divide something by a fraction, it’s easier to think of multiplying its opposite, or reciprocal.
what number must you add to complete the square? x2-20x=17
A. 100
B. -10
C.-100
D. 10
Answers
Answer:
The number is 100
A is correct
Step-by-step explanation:
Given: [tex]x^2-20x=17[/tex]
We need to make completing square at left side.
Rule: We add a number " take half of the coefficient of x and then square it"
Coefficient of x = 20
Half of 20 = 10
Square of 10 = 100
So, we will add 100 both sides make completing square.
Now we make completing square to add 100
[tex]x^2-20x=17[/tex]
Add 100 both sides
[tex]x^2-20x+100=17+100[/tex]
Now we will factor left side perfect square
[tex]a^2-2ab+b^2=(a-b)^2[/tex]
[tex](x-10)^2=117[/tex]
[tex](x-10)^2[/tex] is completing square or perfect square.
Hence, The number is 100
0.16+0.45 eaqkesbnnn
Answers
If you were supposed to add 0.16 and 0.45, the correct answer would be 0.61.
Short answer: 0.61 || 61/100
Why?
When you're adding two decimals, as long as it doesn't have a whole number, you can just add down like so.
1
0.16
+ 0.45
_______
0.61
In fraction form, it is 61/100, because we have the decimal number, and put it to how long it is. (hundred[th])
Hope this helped you! ♥
triangle ABC is similar to Triangle d e f if the perimeter of a triangle ABC is 24 in what is the perimeter of triangle d e f a b c has one length of 9 inches and d e f has one length of 6 in
Answers
24/1.5 = 16
triangle DEF has a primeter of 16 inches
Determine the average rate of change from 0 to 4 for the function f(x)=2^x-3
Answers
Please Help ASAP! Would be greatly appreciated.
Answers
The answer G represents -24/8 the best because it is dividing it into eight parts.
Hope this helps you.
Hi,
The answer G represents -24/8 the best because it is dividing it into eight parts.
Hope this helps you.
how to tell whether its a prime or composite number
Answers
2, 3, 5, 7, 11, 13, 17, 19, 23
Like this 1*2. Or 3*1
Composite numbers have more than two factors for example :
0, 4, 6, 8, 9, 10, 12, 14 15, 16..
For example 0 has many factors
0 times 3 0times 4
Step-by-step explanation: You know that it is a prime if the only number divisible by the number is one. If there are more numbers than 1 then it is composite.
The equation yˆ=0.09x+55.64 models a person's height, in inches, where x is the weight of the person in pounds. According to the regression equation, what is the approximate height of a person that weighs 160 pounds?
Answers
y = 0.09*160 + 55.64 <<--- replace x with 160
y = 14.4 + 55.64
y = 70.04
The person who weighs 160 pounds is predicted to be about 70.04 inches tall
Note: 70.04 inches = 5 ft, 10.04 inches (so roughly 5'10")
Answer:
Height is 70.04 inches.
Step-by-step explanation:
Given that the equation
[tex]yˆ=0.09x+55.64[/tex] models a person's height, in inches, where x is the weight of the person in pounds.
We have to find out the approximate height of the person that weighs 160 pounds
Algebraically we have to find y for x = 160
Substitute for y in the given equation.
[tex]y=0.09(160)+55.64\\y=70.04"[/tex]
A small Learning Center holds 24 less students than the larger Learning Center. Together the learning centers hold seventy-two students. How many students does each Learning Center hold?
Answers
L=Large
72=(L-24)+s
48=L+s
By this point, the “-24” no longer affects the equation. L=s for the purpose of division.
48/2
24=s
Now we know s=24.
The “-24” is now important in finding the value of L. We find the inverse of “-24”, +24.
s+24=48
s= 24 students
L= 48 students
The larger Learning Center can hold 48 students and the smaller Learning Center can hold 24 students.
Explanation:The key to solving this problem is to first express it as two linear equations. Let's denote the number of students the small Learning Center holds as S and the number of students the larger Learning Center holds as L.
The problem provides us with two facts:
The small Learning Center holds 24 less students than the larger one, we can express this as: S = L - 24.Together, both Learning Centers hold seventy-two students, so we can express this as: S + L = 72.Now, we can solve these two equations simultaneously.
Substitute S from the first equation into the second: (L - 24) + L = 72, simplify to: 2L = 96
Thus, L = 48. This means the larger Learning Center can hold 48 students. Substitute L=48 into our first equation to find S: S = 48 - 24 = 24. So, the small Learning Center can hold 24 students.
Learn more about Linear Equations here:https://brainly.com/question/32634451
#SPJ12
The median and interquartile range of a set of data is shown. Write a set of data consisting of seven values for the pair of measures.
Median: 5 Interquartile Range: 5
Answers
If the IQR is 5, we then know that the difference between y and r is 5.
Let's find the 1st and 3rd quartiles. Focusing on the 1st 3 numbers, we see that the 1st quadrant is y; focusing on the last 3 numbers, we see that the 3rd quadrant is r. The IQR is r-y = 5. Just supposing that y were 4, r would be 9:
x 4 y 5 q 9 s
We could arbitrarily let x = 3, y = 4, q = 5 and s = 9: 3 4 4 5 5 9 9.
We must check this!
What is the median? Since there are 7 numbers here, we take the middle number (5) as the median. This agrees with the problem statement.
Next, we find Q1 and Q3. Q1 is the number between 3 and the 2nd 4, and is 4. Q3 is 4+5, or 9, because the IQR is 5. This agrees with the problem statement.