3. (05.06 MC)
Graph the system of Inequalities presented here on your own paper, then use your graph to answer the following questions:
y < 4x – 2
y>5/2x-2 (should be the greater than or equal to sign)
Part A: Describe the graph of the system, including shading and the types of lines graphed. Provide a description of the solution area. (6 points)
Part B: Is the point (-2,-2) Included in the solution area for the system? Justify your answer mathematically. (4 points)
(10 points)
Answers
9514 1404 393
Answer:
A) The first inequality has a dashed boundary line with a slope of 4 and a y-intercept of -2. The shading is below the line. The second inequality has a solid boundary line with a slope of 5/2 and a y-intercept of -2. The shading is above the line. The solution space is a narrow wedge extending up and to the right of the y-intercepts at (0, -2) through the fourth quadrant into the first quadrant.
B) Not in the solution space. The point does not satisfy y < 4(-2) -2 because -2 is not less than -10.
Step-by-step explanation:
Part A:
The boundary line of each inequality is in slope-intercept form, so can be drawn easily by finding points with the appropriate slope=rise/run from the common y-intercept at (0, -2).
The first inequality does not include the "or equal to" case, so the boundary line will be dashed. The relation of y and the inequality symbol is y < ( ), so the shading will be below the line, where y-values are less than those on the line.
The second inequality includes the "or equal to" case, so the boundary line is solid. The relation of y and the inequality symbol is y ≥ ( ), so the shading will be above the line, where y-values are greater than those on the line.
The two shaded areas overlap in a narrow wedge between lines with slope 2.5 and 4. The lower-left point of the wedge is the common y-intercept at (0, -2). It extends through the fourth quadrant into the first quadrant. This wedge is the solution area.
__
Part B:
Based on the above description, no part of the solution space is in the third quadrant, where the point (-2, -2) lies. The point is not in the solution space. It does not satisfy the first inequality:
[tex]-2\nless(4)(-2)-2=-10[/tex]
Related Questions
3y+2=2x is this a direct variation
Answers
The equation 3y + 2 = 2x is not a direct variation
How to determine if the equation is a direct variation
From the question, we have the following parameters that can be used in our computation:
Variation = direct variation
3y + 2 = 2x
A direct variation is represented as
y = kx
Where k is the constant of proportion
When the equations y = kx and 3y + 2 = 2x are compared, we can see that
The equation 3y + 2 = 2x has a constant term
Hence, the equation is not a direct variation
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without using a calculator
cos² 43° - sin² 74° + cos² 47 - Sin16°
Answers
Answer:
100
Step-by-step explanation:
because if you add it all up you will find the sum
Given:
f(x) = x² + x − 6
g(x) = x + 3
Find: (f/g)(x)
Answers
Answer:
x–2, x ≠ -3
Step-by-step explanation:
Solution in the diagram
Help! Cant figure out math question!
Answers
x = 1.76
Are the two possible values for X
Order from least to greatest √_220 , -10, √_100 , 11.5
Answers
Answer: -10, √_100, 11.5, √_220
Step-by-step explanation:
-10 is the least bc it just is and √_100 simplified is 10 and 11.5 is a little greater so duh and √_220 simplified is 14.83
Please explain step by step I dont get it.
Answers
WILL MARK BRAINLIEST!
Calculate mF in parallelogram FGDE.
Answers
In ΔNOP, the measure of ∠P=90°, the measure of ∠N=26°, and OP = 13 feet. Find the length of PN to the nearest tenth of a foot.
Answers
Answer:
b
Step-by-step explanation:
Please help on both!!!!!
Answers
Answer:
[tex]14\pi[/tex] and [tex]16\pi[/tex]
Step-by-step explanation:
The equation for the circumference of circles is either [tex]d\pi[/tex] or [tex]2r\pi[/tex], with r being the radius and d being the diameter.
Question A
The diameter is stated as 14. Plug into the equation to get:
[tex]14\pi[/tex]
This is your answer in exact form.
Question B
The radius is stated as 8. Plug into the equation to get:
[tex]2(8)\pi[/tex]
[tex]16\pi[/tex]
This is your answer in exact form.
Answer:
1) 43.98
2) 50.27
Step-by-step explanation:
I hope this helps!
Exponential Functions
Determine which of the following exponential formula(s) represents exponential function II in the graph above.
(a) 10(1.2)t (β) 10(1.5)t
(x) 20(1.2)t (8) 30(0.85)t
(8) 30(0.95)t (∅) 30(1.05)t
a. x c. 8
b. a d. ∅
Please select the best answer from the choices provided
Answers
Answer:
A. x
Step-by-step explanation:
I calculated it logically
The weight of the square is 10 grams. How much heavier is the circle than the square?
Answers
The weight of the circle is heavier than the weight of the square by the weight of the triangle
How to find how much weightier is the circle as compared with the squareExamining the weights, can lead to a linear equation, the equation will have the follows parameters
let t represent triangle
let c represent circle
let s represent square
6s + 3t = 3s + 3c
6s - 3s + 3t = 3s + 3c
3s + 3t = 3c
divide through by 3
s + t = c
10 + t = c
From the equation 10 + t = c we can say that the weight of the circle is a triangle weight more than the square
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20. You are buying new car for $24,320. You must put down 17%. How much will you need to finance the car for?
Answers
17 percent of 24320 is 4134.4
basically minus that
so
24320 - 4134.4 = 20,185.60
Answer:
24320 - 4134.4 = 20,185.60
Step-by-step explanation:
:)
NO LINKS!!!
A researcher found the average cost of one and two-bedroom apartments for different cities and graphed the data in a scatter plot, with costs of one-bedroom apartments along the x-axis. The variables have a strong linear correlation and the equation for the regression line is yˆ=1.182x+19.096 .
Based on the equation, what should the researcher expect for the average cost of a two-bedroom apartment in a city where the average cost of a one-bedroom apartment is $815?
Answers
Answer:
i hope it helps mapriend
What is the axis of symmetry for a parabola expressed by the quadratic equation? y=x^2+10x-25
Answers
Answer:
the axis of symmetry is: x=-5
Half of the class of 40 students are absent. How many students are absent today?
Answers
Answer:
20 students were absent
Step-by-step explanation:
Half means divide by 2:
40/2 = 20
PLEASE HELP ME! There are 2 Images below!!!
Answers
Answer:
A
Step-by-step explanation:
The slop formula is [tex]\frac{rise}{run}[/tex] and in the first one the rise increase per y (x) is 2 units and the run (y) is 1 as we calculated the run as how many units x rises per y and A is the answer due to it being the one which follows the rule.
How many solutions do the systems of equations have?
y =-1/3 x + 9
y =- 2/6x
Answers
Explanation:
The slopes are the same (-1/3 is the same as -2/6 because -2/6 can be simplified to -1/3) but the y intercepts are different.
Find the perimeter of the polygon.
S cm
6 cm
6 cm
8 cm
a. 25 cm
b. 20 cm
C. 30 cm
d. 28 cm
Please select the best answer from the choices provided
Ο Α
Answers
Answer:
A. 25 cm
Step-by-step explanation:
Perimeter of a polygon = the sum of all sides of the polygon
Therefore,
Perimeter of the given polygon = 5 + 6 + 8 + 6
Perimeter = 25 cm
10 gallons 4 quarts = ____ quarts
Please help
Answers
10•4=40
What is a remainder
Answers
A remainder is the remaining amount of a number than comes out of a division. I'm not sure how to explain it better, so I'll give you an example:
Let's say you want to divide 5 by 2. We know that 5 can't be divided by 2 evenly, it won't give you a whole number. Instead it will give you a decimal 2.5.
In this case, 1 is the remainder and I will explain why! Do the long division for 5/2. 2 fits into 5 two times, so you multiply 2 * 2, which gives you 4. If you subtract that number from 5, you get 1. We know that 2 can't fit into one, therefore, 1 is the remainder. once you start getting into decimals, you can fit numbers into other numbers, which is why technically you can fit 2 into 5, but you can't fit it in evenly, if that makes sense!
I hope this example helps see what a remainder is. It's just the number in a long division that the divisor (in my example, 2 is the divisor) can't fit in!
Round 0.265625 to the nearest hundredth
Answers
Answer:
0.27 is the answer
I wish you luck in your assignments.
Answer:
Step-by-step explanation:
0.27
b) Express of 8000 cm³ of milk as a percentage of 16 litres of milk
Answers
Answer:
50%
Step-by-step explanation:
16 litres = (16 x 1000) cm^3
= 16000 cm^3
Hence,
Percentage = 8000/16000 x 100%
= 1/2 x 100%
= 50%
if you earn 3250 over the 10 year period, how much will be in the account at the end of the 10 year period?
Answers
If earning 3250 per month over 10year period, At the end of 10th year, the amount on the account will be 390,000
What is multiplication?To multiply means to add equal groups. When we multiply, the number of things in the group increases. The two factors and the product are parts of a multiplication problem. In the multiplication problem, 6 × 9 = 54, the numbers 6 and 9 are the factors, while the number 54 is the product.
The amount earned In a month is 3250.
There are 12 months In a year.
The total month in 10 years = 10× 12 = 120 months
The total amount in the account for 10years = 120×3250 = 390,000
Therefore there will be 390000 in the account at the end of 10th year.
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4. The profit on one share is Rs20.What is the profit on 5000 shares?
Answers
Answer:
The profit is: [tex]Rs100000[/tex]
Step-by-step explanation:
Given
[tex]1 \to Rs20[/tex]
Required
Profit on 5000
Repesent this as: x
So, we have:
[tex]1 \to Rs20[/tex]
[tex]5000 \to x[/tex]
Cross Multiply
[tex]x * 1 = Rs20 * 5000[/tex]
[tex]x * 1 = Rs100000[/tex]
The profit is: [tex]Rs100000[/tex]
mark is thinking of two numbers
his two numbers have a positive sum but a negative product
give an example of what hi numbers could be ?
Answers
9514 1404 393
Answer:
-2, 3
Step-by-step explanation:
For the product to be negative, exactly one of the two numbers must be negative. For the sum to be positive, the positive number must be larger than the absolute value of the negative number.
One such pair of numbers is -2 and 3.
__
Their product is -6; their sum is +1.
Write an explicit formula for An, the nth term of the sequence 16, -8,4, ....
Answers
Answer:16(-1/2)^n-1
Step-by-step explanation:
LMNP is a rectangle. Find the value of x and the length of each diagonal.
Answers
The value of x is equal to 3.
The length of diagonal LN is equal to 18 units.
The length of diagonal MP is equal to 15 units.
What is a diagonal?In Mathematics, the diagonal of a rectangle can be defined as a line segment that connects any two (2) of its non-adjacent vertices together while dividing the rectangle into two (2) equal parts.
This ultimately implies that, the length of each diagonal of a rectangle is always equal to each other. Therefore, the diagonals of any rectangle is always equal to one other.
How to determine the value of x?We would determine the value of x by equating the length of each diagonal as follows;
LN = MP
7x - 3 = 4x + 3.
7x - 4x = 3 + 3
3x = 6
x = 6/2
x = 3.
Next, we would calculate length of each diagonal as follows;
LN = 7x - 3
LN = 7(3) - 3
LN = 21 - 3
LN = 18 units.
MP = 4x + 3.
MP = 4(3) + 3.
MP = 12 + 3
MP = 15 units.
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Complete Question:
LMNP is a rectangle. Find the value of x and the length of each diagonal.
LN = 7x - 3 and MP = 4x + 3.
100 POINTSSSSS!!!!!!!!!!!!!!!!!
What is the solution to the equation 1 over 5 multiplied by n equals 3 ? (5 points)
n = 8
n = 15
n = 25
n = 125
Answers
Answer:
n=15
Step-by-step explanation:
Answer:
n = 15
Step-by-step explanation:
1/5 * 15 = 3
This is 100% correct, if you don't believe me go to a new tab and type 1/5*15
It will say 3.
Find the area. The figure is not drawn to scale.
Find the volume of the sphere shown. Give each answer rounded to the nearest cubic unit.
Answers
Answer:
[tex](a)\ Area = 28.12cm^2[/tex]
[tex](b)\ Volume = 1437.33cm^3[/tex]
Step-by-step explanation:
Solving (a): The parallelogram
[tex]h = 7.6[/tex] --- height
[tex]b = 3.7[/tex] --- base
The area is calculated usng:
[tex]Area = base * Height[/tex]
[tex]Area = 3.7 * 7.6[/tex]
[tex]Area = 28.12cm^2[/tex]
Solving (b): The sphere
[tex]d = 14cm[/tex]
Required
The volume
First, calculate the radius
[tex]r = d/2[/tex]
[tex]r = 14cm/2 = 7c,[/tex]
The volume is calculated using:
[tex]Volume = \frac{4}{3} \pi r^3[/tex]
This gives:
[tex]Volume = \frac{4}{3} * \frac{22}{7} * 7^3[/tex]
[tex]Volume = \frac{4}{3} * 22 * 7^2[/tex]
[tex]Volume = \frac{4}{3} * 1078[/tex]
[tex]Volume = \frac{4*1078}{3}[/tex]
[tex]Volume = \frac{4312}{3}[/tex]
[tex]Volume = 1437.33[/tex]
Find the sum of all solutions to the equation $4x(x-3) = 23$.
I NEED THIS ASAP
Answers
The sum of the solutions of the equation 4x(x - 3) = 23 is 3.
What is a quadratic equaton?A quadratic equation is an algebraic expression in the form of variables and constants.
A quadratic equation has two roots as its degree is two.
Given, An equation 4x(x - 3) = 23.
Now, Distributing the terms in the LHS we have,
4x² - 12x = 23.
4x² - 12x - 23 = 0.
By applying Sridhar acharya's formula we have,
[tex]x_{1,\:2}=\frac{-\left(-12\right)\pm \sqrt{\left(-12\right)^2-4\cdot \:4\left(-23\right)}}{2\cdot \:4}[/tex].
[tex]x=\frac{3+4\sqrt{2}}{2},\:x=\frac{3-4\sqrt{2}}{2}[/tex].
Therefore, The sum of the solutions of the equation is,
x + x = (3 + 4√2)/2 + (3 - 4√2)/2.
= (3 + 4√2 + 3 - 4√2)/2.
= 6/2.
= 3.
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