Answer: Choice A) Empty set
This is another way of saying "no solutions"
============================================
Explanation:
Your teacher made a typo. The given inequalities will have boundary lines that both have positive slopes, not negative slopes. So the boundary lines should go uphill as you move from left to right.
See the diagram below to see what the graph should look like.
The upper dashed line is y = (1/2)x+3. The lower dashed line is y = (1/2)x-2
The upper dashed line represents the boundary for y > (1/2)x+3. Region 1 is the set of solution points for y > (1/2)x+3
While the solution set for y < (1/2)x-2 is represented with region 3
There is no overlap between regions 1 and 3 due to the parallel boundary lines.
Put another way: there are no (x,y) points that are in both region 1 and region 3 at the same time.
So that's why there are no solutions to this system of inequalities.
---------------------
Alternative method:
Convert the first inequality into Ax+By > C form
y > (1/2)x+3
2y > x + 6 .... multiply both sides by 2
-x+2y > 6 ... subtract x from both sides
z > 6 .... let z = -x+2y
Convert the second inequality into Ax+By < C form
y < (1/2)x-2
2y < x - 4
-x+2y < -4
z < -4 .... let z = -x+2y
We have some number z that is both z > 6 and z < -4 at the same time, but no such number exists. So this is another way to see we have an inconsistent system with no solutions.
between which two consecutive integers does the negative square root of 20 lie
Please I need some answers
Answer:
i) 4 ii) 9 iii) 16 iv) 25
Step-by-step explanation:
2 x 2 = 4
3 x 3 = 9
4 x 4 = 16
5 x5 = 25
Answer:
i) is 2x2 which is 4
ii) is 3x3 which is 9
iii) is 4x4 which is 16
iiii) is 5x5 which is 25
Step-by-step explanation:
the exponent tells you how many times you multiply the base number by itself.
2. Below are the graphs of y = |x| and y = |x| + 11. How are the graphs related?
10
10-8
10
a. The two graphs are the same.
b. The graphs have the same y-intercept. The second graph is steeper than y = |xl.
C. The graphs have the same shape. The y-intercept of y = x is 0 and the x-intercept of the
second graph is 11.
d. The graphs have the same shape. The y-intercept of y = x is 0 and the y-intercept of the
second graph is 11.
China is starting private basketball lessons. She has to pay a $25 registration fee and an additional $10 per session. If she has
saved $205, how many training sessions can she attend?
0.000028 what is the scientific method
Answer:
2.8 x 10^-5
Step-by-step explanation:
1. Jebrel borrowed $7000 from his friend. He saves $110 each month to pay
him back
a. How much will he have paid off at the beginning of the 1st, 2nd, 3rd, 4th and 5th
months? (Should this chart start with zero or 1)
b. Make a graph to represent the pattern from part a.
Answer 63
Step-by-step explanation:
it will take around 63 months
Answer:
1. 6890
2. 6790
3. 6670
4. 6560
5. 6450
Step-by-step explanation:
what is y^2 when y=-2?
Answer:
4
Step-by-step explanation:
y=-2
-2*-2
4 (2 negatives is a positive)
Answer:
y ^ 2 = 4
Step-by-step explanation:
y ^ 2
= -2 ^ 2
= 4 (since - * - = +)
At her birthday party, Ms. Willow would not give her age directly. She said, 'If you add the year of my birth to this year, subtract the year of my 25th birthday and the year of my 55th birthday, and then add my present age, the result is 58.
Answer:
69 years
Step-by-step explanation:
Given that:
Let year of birth = x
This year = 2020
Year of 25th birthday = x + 25
Year of 55th birthday = x + 55
Present age = 2020 - x
Hence,
x + 2020 - (x + 25 + x + 55) + (2020 - x) = 58
x + 2020 - (2x + 80) + (2020 - x) = 58
x + 2020 - 2x - 80 + 2020 - x = 58
-2x + 4040 - 80 = 58
-2x + 3960 = 58
-2x = 58 - 3960
-2x = - 3902
x = 1951
Birth year = 1951
,
Hence, age =
2020 - 1951 = 69 years
8/19 +4/24
I need help
Find the measures of the labeled angles
Answer:
135 degrees \
Step-by-step explanation:
5x= x+108
Subtract x from the right
4x= 108
divide by 4
x= 27
Substitute for x in the original equation
(x+108)
(27)+(108)
= 135 degrees
Solve: -19 = X - 19 halppppp
Answer:
x = 0
Step-by-step explanation:
Step 1: Write equation
-19 = x - 19
Step 2: Solve for x
Add 19 to both sides: 0 = xRewrite: x = 0Step 3: Check
Plug in x to verify it's a solution.
-19 = 0 - 19
-19 = -19
Answer:
0
Step-by-step explanation:
Yes I need help with x question and please check if my other answers are correct
b.
It snows 2 inches every hour so for x hours it will be x×2 inches
The equation: y = 2x
So for x hours we have 2x inches of snow
c.
x = 24, so y = 2×24 = 48
It will fall 48 inches of snow
Which of the following quadrilaterals are similar?
Please help with these questions!!
Answer: 308
Step-by-step explanation: Divide 70 by 5 which is 14 and then 14 times 22 is 308
Jeff earns money mowing lawns. His earnings and hours worked represent a direct variation. He worked for 5 hours and earned $37.50. Determine the constant of proportionality for dollars earned per hours worked and for hours worked per dollars earned.
Answer:
Jeff earns $7.50 dollars per hour
Step-by-step explanation: Just divide $37.50 and 5.
To estimate the mean number of text messages sent by cell-phone users, a researcher chooses a location on a college campus in the city and surveys the first 50 people who walk past. These subjects are asked how many text messages they have sent in the past 24 hours. Is it likely that bias will be present in the sample?
Possible Answers:
A:Because this is a convenience sample, it is likely that the sample results will be unbiased.
B:Because this is a convenience sample of college students, it is likely that bias is present and that the results will overestimate the mean number of text messages sent.
C:Because this is a convenience sample of college students, it is likely that bias is present and that the results will underestimate the mean number of text messages sent.
D:Because this is a voluntary response sample of college students, it is likely that bias is present and that the results will overestimate the mean number of text messages sent.
Answer:
the answer is B :)
Step-by-step explanation:
edgen 2020
Tammy usually uses her cupcake recipe to make 18 cupcakes, but this time 1 point
she wants to make 36 cupcakes. The recipe calls for 13/4 cups of sugar and
Tammy has 2 cups on hand. How much more sugar does she need?
Lena says that and are like terms. Is she correct? Why or why not? A. No, because the same variables are not raised to the same powers. B. Yes, because both terms have a variable with a power of 3 and a power of 1. C. Yes, because both terms have an x and a y. D. No, because the two terms do not have the same coefficients.
Answer:
D because of the question
No, because the same variables are not raised to the same powers. which is the correct answer would be an option (A).
What is a polynomial?A polynomial is defined as a mathematical expression that has a minimum of two terms containing variables or numbers. A polynomial can have more than one term.
What is an exponential function?An exponential function is defined as a function whose value is a constant raised to the power of an argument is called an exponential function.
It is a relation of the form y = aˣ in mathematics, where x is the independent variable
Lena says that 4xy³ and -5x³y are like terms
⇒ 4xy³ and -5x³y
Here both polynomials are not like terms, because the same variables are not raised to the same powers.
Therefore, the correct answer would be an option (A).
Learn more about the polynomial here:
brainly.com/question/11536910
#SPJ2
The question seems to be incomplete the correct question would be
Lena says that 4xy³ and -5x³y are like terms. Is she correct? Why or why not?
What is the slope of (-2,-6) and (-7,-5)?
Answer:
= -1/5
Step-by-step explanation:
To find the slope we use
m = ( y2-y1)/(x2-x1)
= ( -5 - -6)/(-7 - -2)
( -5 +6)/(-7 +2)
1/-5
= -1/5
Answer:
-1/5
Step-by-step explanation:
Y2 - Y1 / X2 - X1
-6 - -5 / -2 - -7
Convert: -6 + 5 / -2 + 7
-1/5
Hope that helps!
Coordinate planes: Do any of you know any nemonic devices or anything to help me remember quadrant numbers and the positive and negative signs? I have trouble remembering and anytime I look anything up Edgenuity kicks me out because it insists on being cancer.
Step-by-step explanation:
Hello!!!
I can understand how you feel about this. I hope to do my best in helping you understand quadrant numbering and signs.
Now for the number start form the top right and move counter-clockwise, that is
Top right =1st quadrant
Top left = 2nd quadrant
Bottom left = 3rd quadrant
Bottom right =4th quadrant
Basically moving counter-clockwise you will get this
Now for the sign convection
Up and right are both positive
Down and left are both negative.
I hope this helps. Don't forget to let me know should you need any further assistance.
Regards.
Make a Math expression for each of these
$50 per day and $0.25 a mile
$40 per day and $0.30 a mile
What is the measure of the angle formed by the minute hand and hour hand of a clock in each case?
at 4 o’clock
Answer:
120 degrees
Step-by-step explanation:
The fraction models below represent two fractions of the same whole. How many
7\10s are there in 1/5 ?
Answer:1 im pretty sure
Step-by-step explanation:
Equivalent fraction with a denominator of 10, 100, or 1000 and a decimal with 1/2
Answer:
5/10
50/100
500/1000
Step-by-step explanation:
5/10 is equal to 1/2
50/100 is equal to 1/2
500/1000 is equal to 1/2
Jason spent $20.00 on Takis. If each bag of Takis cost
$2.50, how many lunches did he buy?
Answer:
8
Step-by-step explanation:
20.00 divided 2.50 = 8.
Answer:
8
Step-by-step explanation:
$20.00/$2.50 = 8
What is the value of x?
64 68
(8x -12)
(2x + 18)
Perform the operation. Enter your answer in scientific notation.
7 x 10^6 - 5.5 x 10^6
1.5*10^6x
..................
Which shows the image of triangle WXY after the transformation R0, –90°(x, y)?
On a coordinate plane, 2 triangles are shown. The first triangle has points W (negative 4, negative 1), Y (negative 2, negative 1), X (negative 4, negative 4). The second triangle has points Y prime (2, negative 1), W prime (4, negative 1), X prime (4, negative 4).
On a coordinate plane, 2 triangles are shown. The first triangle has points W (negative 4, negative 1), Y (negative 2, negative 1), X (negative 4, negative 4). The second triangle has points Y prime (negative 4, 4), W prime (negative 4, 2), X prime (negative 1, 2).
On a coordinate plane, 2 triangles are shown. The first triangle has points W (negative 4, negative 1), Y (negative 2, negative 1), X (negative 4, negative 4). The second triangle has points Y prime (negative 1, 2), W prime (negative 1, 4), X prime (negative 4, 4).
On a coordinate plane, 2 triangles are shown. The first triangle has points W (negative 4, negative 1), Y (negative 2, negative 1), X (negative 4, negative 4). The second triangle has points Y prime (5, negative 3), W prime (5, negative 1), X prime (2, negative 1).
Answer:
its c
Step-by-step explanation:
trust me
Answer:
c
Step-by-step explanation:
The cost of a gallon of gas
changed from $2.15 to $2.68.
Answer:
whats the question or answer you're looking for?
Step-by-step explanation:
I need help please thanks!
Answer:
f=39
Step-by-step explanation:
hi! first, we can multiply by 12 on both sides to eliminate the 12 in the denominator.
f+3= (7/2)*12
f+3=84/2
f+3=42
now, subtract 3 on both sides.
f=39