You are graphing y < 2x + 1. What type of line do you use and where do you shade?

Answers

Answer 1

Since there isn't a line under the < sign, this means that we used a dotted or dashed line. The dotted or dashed line indicates that we do NOT include the boundary as part of the solution set.

Since y is isolated and we have a less than sign, this means we shade below the dashed/dotted boundary line. Specifically, the boundary line is the graph of y = 2x+1. This boundary line goes through (0,1) and (1,3). Again, points on this boundary line are NOT part of the solution set.

So in summary we have:
A dashed or dotted boundary line
The shaded region is below the dashed/dotted boundary line.

Related Questions

Give the slope intercept form of the equation of the line that is perpendicular to 5x-3y=8

Answers

hello :
let the slope : a and ; b the slope of the line : 5x - 3y = 8
the line that is perpendicular to 5x-3y=8 so : a×b = - 1
but :
5x - 3y = 8... y = (5/3)x - 8/3 when : b = 5/3
the slope intercept form of the equation of the line that is perpendicular
to 5x-3y=8 is : y = (5/3)x +c

One half of a number is 8 less than the number itself

Answers

The question is a little vague but I believe the answer would be 16. 16 divided in half is 8. And that is 8 less than 16. < Not the answer for this question.

I didn't understand the question until Maria answered, she is completely right! Sorry for the misunderstanding.

1/2 of x is 2/3 of x minus 8

(1/2)x = (2/3)x -8

clear fraction by multiplying by 6

3x = 4x -48

x = 48

How much is 8% of 1249? round the answer to the nearest hundredth

Answers

First of all you make the multiplier:
8/100 = 0.08

Then you multiply the number by the multiplier:
1249*0.08 = 99.92

Hope this helps! :)

It is 99.92. I'm sure that thats the answer.

How would I solve 1/5=125^x

Answers

Hi there,

This question is a bit weird lol, but anyway here is how to do it and the answer:

1/5 = 123² x
1/5 = 15625x
15625x = 1/5

Hence, X = 1/5

Hope this helps :)

This is a log equation. To solve

125^x = 1/5
x log 125 = log 1/5
x = log (1/5) / log 125
[tex]x = -\frac{1}{3} [/tex]

To show that we are correct. Input -1/3 for x [tex]125^{-1/3}[/tex] with a calculator and it will = 1/5, meaning it is correct.

[tex]125^{-1/3} = \frac{1}{5}[/tex]

(01.02) kim earns $30 for babysitting on friday nights. she makes an average of $1.25 in tips per hour. write the function of kim's earnings, and solve for how much she would make after 3 hours. (1 point) y = 1.25x + 30; $33.75 y = 30x + 1.25; $43.75 y = 30x + 1.25; $91.25 y = 1.25x + 30; $31.25

Answers

y = 1.25x + 30 <== ur function

for 3 hrs.....x = 3
y = 1.25(3) + 30
y = 3.75 + 30
y = 33.75 <=== for 3 hrs

Harry's school is selling t-shirts to raise money for the archery team. The school will receive 35% of the total sales which can be modeled by the equation y = 0.35x, where x represents the total number of sales. What is the meaning of the x-intercept in the equation?

Answers

Answer: The x-intercept represents the number of sales when no money has been raised.

Answer:

X-intercept states that the graph crosses the x-axis.

Substitute y = 0 and solve for x.

As per the statement:

Harry's school is selling t-shirts to raise money for the archery team.

The school will receive 35% of the total sales which can be modeled by the equation:

y = 0.35x

where, x represents the total number of sales and y represents the total cost of sale.

By definition of x-intercept:

0 = 0.35x

⇒x = 0

Therefore, the x-intercept in the equation represents:

The number of sales when no money has been raised.

You randomly select one card from a 52-card deck. find the probability of selecting a blackblack twotwo or a blackblack eighteight

Answers

Since there are 26 black cards (1/2 of 52) and 2 black twos (one for each suite, and there are 2 black/red suites), we can use the same logic to get that there are 2 black eights. 2+2=4, and since there are 52 cards, you have a 4/52 or 1/13 (we get this because 4 goes into 52 13 times) chance of getting a black 8 or 2.

How do I solve 28.8=18x

Answers

28.8 = 18x....divide both sides by 18, eliminating the 18 on the right side
28.8 / 18 = x
1.6 = x <==

Alexandra is two years older than brad. cecilia is three years younger than alexandra. all three ages added together gives a total of 37 years. how old is each student?

Answers

Let us say that:

x = age of brad

x + 2 = age of Alexandra

(x + 2) – 3 = age of Cecilia = x – 1

We are also given that:

x + x + 2 + x – 1 = 37

solving for x:

3x + 1 = 37

3x = 36

x = 12 = age of brad

x + 2 = 14 = age of Alexandra

x – 1 = 11 = age of cecilia

If 1 cm = 0.394 inches, how many inches are in 1 kilometer?

Answers

Since 1 km is 100,000 cm there are 39,400 inches in a kilometer

Answer: There are 39400 inches in 1 kilometers.

Step-by-step explanation:

Since we have given that

1 cm = 0.394 inches

As we know that

1 m = 100 cm

1 km = 1000 m

1000 m = 100×1000=100000 cm

1 km = 100000 cm

So, it becomes,

[tex]1\ km=0.394\times 100000\\\\1\ km=39400\ inches[/tex]

Hence, there are 39400 inches in 1 kilometers.

While in europe, if you drive 113 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 41.0 mi/gal ? assume that 1euro=1.26dollars?

Answers

113 x 7 = 791 km per week
791 km ~ 491.5 miles

491.5/41 = 12 gallons used

1 galloon ~ 3.8 liters

45.6 liters used

45.6 x 1.10 euros = 50.16 Euros used or $63.20 dollars used.

Answer:

[tex]\$63.04[/tex]

Step-by-step explanation:

Distance traveled in [tex]1[/tex] day = [tex]113 km[/tex]

Distance traveled in [tex]1[/tex] week = [tex]113*7 = 791 km[/tex]

Mileage of car = [tex]41.0 mi/gal = \frac{41*1.60}{3.78} = 17.35 km/liter[/tex]

Total gas consumed = [tex]\frac{791}{17.35} = 45.49liter[/tex]

Cost of [tex]1liter[/tex] gas = [tex]1.10 euros = 1.10*1.26 = \$1.386[/tex]

Money spent on gas in a week = [tex]45.49*1.386 = \$63.04[/tex]

help me please geometry

Answers

If we translate the top figure (ABC) 2 units to the left and reflect over the x axis, then we end up with the bottom figure (A'B'C'). This proves the figures to be congruent.

This is something to do with trial and error really. See attached.

I need help with equation number 6

Answers

Combine like terms
-2x-4=-2x-4

Since the equations are the same, the answer is infinitely many solutions.

If f is a function defined by the equation yequals=f(x) then x is called the

Answers

X is the independent variable (think 'input variable'); all of the values of x which are valid (ones that don't create division by zero or square root of a negative value) is the domain.

The difference of the squares of two positive consecutive even integers is 20 . find the integers. use the fact that, if x represents an even integer, then xplus 2 represents the next consecutive even integer.

Answers

If x is the first number, x+2 is the next consecutive even integer. The difference (subtraction) of their squares equals 20. Therefore:
(x+2)²-x²=20...expand this:
x²+4x+4-x²=20
x²+4x+4-x²=20
4x+4=20
4x=16
x=4. Therefore the next consecutive even integer is x+2=6.
To check: 6²-4² must equal 20
36-16=20 check!

The positive even numbers are 4 and 6.

Equation

State of quality between two expressions consisting of variable and/or number.

Given

The difference of the squares of two positive consecutive even integers is 20.

To find

The number will be

How do find the numbers?

The difference of the squares of two positive consecutive even integers is 20.

Let x be the even number and positive consecutive even is (x+2)

Then according to the condition

[tex]\begin{aligned} (x+2)^{2} -x^{2} &=20\\x^{2} +4x+4-x^{2} &= 20\\4x &= 20-4\\4x &= 16\\x &= \dfrac{16}{4}\\x &= 4\end{aligned}[/tex]

Then the positive even numbers are 4 and 6.

More about the equation link is given below.

https://brainly.com/question/2263981

A regular hexagon rotates counterclockwise around its center. It turns through angles greater than 0° and less or equal to 360°. At how many different angles of a hexagon map onto itself?

Answers

there are 6 sides to a hexagon

360/6 = 60 degrees

so it will map onto itself at 60, 120, 180, 240, 300 & 360

there are 6 different angles

Solve for x
7x-0.15=2x+0.6
Explain

Answers

if you subtract 2x from each side you get 5x-0.15=0.6 because the subtraction of 2x on the right of the equal sign cancels out. Then, if you add 0.15 to both sides you will get 5x=0.75. Finally, if you divide both sides by 5 you get x = 0.15.

round 38562.7 to 1 significant figure

Answers

= 488000
(real number)

= 4.88 × 105
(scientific notation)

= 4.88e5

maybe this will help ?

to round it to 1 significant figure there needs to be only 1 figure that is above 1 the rest must be zero so the answer is 40000

help please! Note: Use ELIMINATION!!!

Answers

the answers are 24 and -2

Multiplying the second equation by 4/3 and adding it to the first, we get 36=9x and by dividing both sides by 9, we get x=4. Next, we can plug that into the second equation (it doesn't matter which equation) to get 3*4-3y=18=12-3y. Subtracting 12 from both sides, we get 6=-3y and by dividing both sides by -3 we get y=-2

A jet plane, flying 120 mph faster than a propeller plane, travels 3520 miles in 3 hours less time than the propeller plane takes to fly the same distance. how fast does each plane fly?

Answers

Final answer:

The propeller plane flies at a speed of 880 mph, and the jet plane flies at a speed of 1000 mph.

Explanation:

Let the speed of the propeller plane be represented by x mph. Since the jet plane is flying 120 mph faster, its speed can be represented as x + 120 mph.

We know that the distance traveled by both planes is the same, so we can set up the equation:

x * t = (x + 120) * (t - 3)

where t is the time taken by the propeller plane.

Simplifying the equation, we get:

x * t = xt + 120t - 3x - 360

Rearranging the terms, we have:

120t - 3x = 360

Since we have two variables, we need another equation. We can use the formula for distance, which is given by:

Distance = Speed * Time

For the propeller plane, we have:

D = x * t

For the jet plane, we have:

D = (x + 120) * (t - 3)

Since the distance is the same, we can equate these two equations:

x * t = (x + 120) * (t - 3)

x * t = xt + 120t - 3x - 360

Rearranging the terms, we get:

120t - 3x = 360

Solving the system of equations, we find that x = 880 mph and x + 120 = 1000 mph.

Solve each equation. Then check your solution. 3-a/7=-2

Answers

3-a/7=-2 (problem)
3-a=-14 ( multiply by 7 on both sides)
-a=-14 (subtract 3 from both sides)
a=14 (divide both sides by negative 1)
Answer: a=14

What is the measure of angle S?

Answers

132 + 56 + 79 = 267

360 - 267 = 93

answer is 93 degrees

A student has to earn a total of at least 280 points on four tests in his math class to pass the class, and his total on the first three tests is 197 points. set up an inequality necessary to find the minimum number of points that he must earn on the fourth test to pass the class. then solve the inequality.

Answers

try this equation 280 - 197 = x

A certain roller coaster can accommodate 1600 riders per hour a digital sign states that there are 345 people in line if you get in line about how many minutes will it take you to get to the front of the line

Answers

Given that the roller coaster can accommodate 1600 riders per hour, thus the roller coaster can accomodate 1600 / 60 = 26.67 riders per minute.

Given that there are 345 people in the line, the number of minutes it will take for the 345 persons to get into the roller coaster is given by 345 / 26.67 = 12.94 minutes.

Therefore, it will take you 12.94 minutes to get to the front of the line.

2,226 divided by 53 how do you solve this??

Answers

The answer is 42 becuase you are making 53 groups of 2226 you can also simply solve it by useing long division

2226 divided by 53 is equal to42

A 150° angle is an obtuse angle. What do you Notice about the statement below? What do you Wonder about the statement?

Answers

The statement is just a fact.

Toni can carry up to 23 lb in her backpack. Her lunch weighs 1 lb, her gym clothes weigh 2 lb, and her books (
b. weigh 4 lb each. How many books can she carry in her backpack? The inequality is . Toni can carry up to books in her backpack.

Answers

1 + 2 + 4b < = 23
3 + 4b < = 23
4b < = 23 - 3
4b < = 20
b < = 20/4
b < = 5....so she can carry, at the most, 5 books <===

Janet Fog's uncle, Pete Moore, promised her a gift of $30,000 upon her graduation from law school or $1500 every quarter for the next four years. if the money could be invested at 12% compounded quarterly, which offer should Janet choose?

Answers

First calculate the future value of the annuity
The formula to find the future value of an annuity ordinary is
Fv=pmt [((1+r/k)^(kn)-1)÷(r/k)]
Fv future value?
PMT quarterly payment 1500
R interest rate 0.12
K compounded quarterly 4
N time 4 years
Fv=1,500×(((1+0.12÷4)^(4×4)
−1)÷(0.12÷4))
=30,235.32

Now compare the amount of the annuity with amount of the gift
30,235.32−30,000=235.32
So as you can see the amount of the annuity is better than the amount of the gift by 235.32

Second offer is better

Hope it helps!

Brandon is shopping at Old Navy during a sale. All shorts are $16 each and all t-shirts are $10 each.He has $100 to spend and would like to purchase at least 2 pairs of shorts.
a) Write a system of linear inequalities to represent
this situation, then graph.
b)Using your graph, give two possible combinations
of shorts and Brandon can buy.

Answers

Let
x = the number of shorts bought
y = the number of t-shirts bought

A pair of shorts costs $16 and a t-shirt costs $10. Brandom has $100 to spend.
Therefore
16x + 10y ≤ 100
This may be written as
y ≤ - 1.6x + 10 (1)

Brandon wants at least 2 pairs of shorts. Therefore
x ≥ 2 (2)

Graph the equations y = -1.6x + 10 and x = 2.
The shaded region satisfies both inequalities.

Answer:
Two possible solutions are
(a) 3 pairs of shorts and 4 t-shirts,
(b) 4 pairs of shorts and 2 t-shirts.

Two possible solutions are (a) [tex]3[/tex] pairs of shorts and [tex]5[/tex] t-shirts

(b) [tex]4[/tex] pairs of shorts and [tex]3[/tex] t-shirts.

[tex]x=the\; number\; of shorts\\y=the\; number\; of\ t-shirt\; bought[/tex]

So equation formed is

[tex]16x+10y\leq 100[/tex]

[tex]10y\leq 100-16x\\y\leq 10-1.6x[/tex]---Eq [tex]1[/tex]

Bradon wants at least [tex]2[/tex] pair of shorts.Therefore

[tex]x\geq 2[/tex]--Eq [tex]2[/tex]

Now put,

[tex]x=3 \\y=10-1.6(3)\\y=10-4.8\\y=5\\[/tex]

Hence [tex]3[/tex] shorts and [tex]5[/tex] t-shirts

Now put,

[tex]x=4 \\y=10-1.6(4)\\y=10-6.4\\y=3\\[/tex]

Now graph the equation,

Learn more about inequalities here:

https://brainly.com/question/15137133?referrer=searchResults

Erin is 8 years younger than twice Paula’s age. The sum of their ages is 40. How old is Erin

Answers

You do the sum(40) subtracted by 8, the answer from that divided by 2 since Erin's two times younger.
40-8=32
32÷2=16
Then if you want to check it you do the opposite and get the same sum(40) so 16×2=32 and 32+8=40

Final answer:

To solve this problem, we set up two linear equations based on the given information and solved them simultaneously. We found that Erin's age is 24 years.

Explanation:

This problem is a classic example of a linear equation. We can set up two equations based on the information given:

Erin is 8 years younger than twice Paula’s age. This can be written as E = 2P - 8.The sum of their ages is 40. This can be written as E + P = 40.

Upon substituting the value of E (Erin's age) from the first equation into the second, we get: 2P - 8 + P = 40. Simplifying this gives P = 16. Substituting P = 16 into the first equation, we find E = 24. Therefore, Erin is 24 years old.

Learn more about Linear Equations here:

https://brainly.com/question/32634451

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