NEED HELP ASAP
Select the correct answer.
4
X
-4
2
-2
Which of the following inequalities is graphed on the coordinate plane?
O A. y > -21 + 1
OB. y -23 + 1
OC. y < -25 + 1
OD. y < -23 + 1
Answers
Answer: D. y ≤ -2x = 1
Step-by-step explanation: To determine the inequality, first determine the line equation.
Line equation can be written as
[tex]y-y_{0}=m(x-x_{0})[/tex] , called point-slope form of a line equation,
where
m is slope of the equation
x₀ and y₀ are points in the line
Slope is calculated as the difference between y-coordinates divided by the difference between the x-coordinates:
[tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
From the graph, we have 2 points: (-1,3) and (1,-1), so find slope:
[tex]m=\frac{3+1}{-1-1}[/tex]
m = -2
Replacing slope and point (0,1) into point-slope form:
[tex]y-1=-2(x-0)[/tex]
[tex]y=-2x+1[/tex]
This is the equation of the line.
Now, we determine the inequality:
Observe the graph, if the line is a continuous one, it is a less-than-or-equal-to (≤) or more-than-or-equal-to (≥). If it was a dotted line, the symbol would be less-than (<) or more-than (>).
In our case, the line is continuous so it will be ≥ or ≤. To determine which one, we can plug a point located in the shaded part, for example (0,0). Substituting:
y = -2x + 1
0 ≠ -2(0) + 1
0 ≤ 1
Therefore, line equation of the graph is [tex]y\leq -2x+1[/tex].
Related Questions
please help me with this question ( im going to fail my classes-)
Answers
Answer:
u will not fail i promise
Step-by-step explanation:
and the answer is the first becz we have to see the difference in arthimatic terms
Answer:
product
Step-by-step explanation: product means solution of two thingies being multiplied with each other i think
What is the greatest common factor of 43 and 81?
Answers
Answer:
the greatest common factor of the two numbers is 1
Step-by-step explanation:
Answer:
GCF of 43 and 81 = 1
there is no way to multiply the numbers. Only 1 x 43 and 81 is a thing.
You are welcome
Potato salad can be purchased at the grocery store for $2.58 per pound. If Michael wants to buy 2.5 pounds of potato salad, how much will it cost?
Answers
Answer: $6.45
Step-by-step explanation: Since 1 pound is $2.58, and we need to find out how much is 2.5 pounds, we can just multiply 2.58 by 2.5. Should be simple for you. Hope this helps. :)
what is the slope of the line that passes through the points (-4,-4) and (9,4)
Answers
Answer:
8/13
Step-by-step explanation:
(−4,−4);(9,4)
(x1,y1)=(−4,−4)
(x2,y2)=(9,4)
Use the slope formula:
m=
y2−y1
x2−x1
=
4−−4
9−−4
Answer: 8/13
Step-by-step explanation:
[tex]m = \frac{y_{2}-y_{1} }{x_{2} -x_{1} }[/tex]
[tex]m = \frac{4 -(-4) }{9-(-4) }[/tex]
[tex]m = \frac{4 +4 }{9+4 }= m = \frac{8}{13 }[/tex]
Slope is 8/13
can u pls help me with this question asap
Answers
Answer:
90
Step-by-step explanation:
Basically 90 precent of 100 is 90
Simplify 48 = (-12). O A. -4 1 O B. O C. 4 O D. -
Answers
Answer:
Assuming you meant divide instead of equal it is 4 (Answer C)
Step-by-step explanation:
help asap plspls !! :)
Answers
Stephen, Gavin and Jim share some sweets in the ratio 1:4:4. Stephen gets
13 sweets. How many more sweets does Gavin get over Stephen?
Answers
Answer:
39 sweets
Step-by-step explanation:
the sum of the ratio is
1+4+4= 9
to find the number of sweets shared we say
1/9*X=13 sweets
X=9*13
X=117
therefore Gavin and jim will share equal number of sweets
117-13
104 sweets. Jim gets 52 while Gavin gets 52 sweets.
How many more sweets does Gavin get over Stephen?
52-13
Gavin get 39 more sweets over Stephen. I hope that helps
PLEASEE HELPP
Which system of equations would be best solved using Substitution?
1. -2x + 5y = -1
2x + 5y = 11
2. 2x = 10
y=-3
3. 3x + 7y= 21
4x – 3y = -9
4. y=2/3x+5
2x - 6y= -42
Answers
Step-by-step explanation:
1. The best way to solve this one would be elimination
Both the equations have the same term, 5y
Since neither variable is isolated, it wouldn't be easy to use the method of substitution
2. Both the equations only have x or y
SInce neither of the equations has both the variables, substitution is impossible
3. Same as 1, just that you would need to multiple one of the equations by a certain number to create equal terms to make elimination possible
4. It's perfect!!! The y is isolated and it would be simple to just substitute the first equation into the 2nd (I hope you got what I meant)
4, is the correct answer
I hope this helps!!!
Answer:
4. y=2/3x+5
2x - 6y= -42
Step-by-step explanation:
Which terms in the expression
5c + 8 + 12c are like terms
Answers
Answer:
Step-by-step explanation:
like terms are 5c and 12c because both have the same variable, c
Answer:
The terms 5c and 12c are like terms. They can both be added.
Step-by-step explanation:
It could be any number the variable has to stay the same and if there is none, it can’t be paired. Also watch out for problems like 12c + 5c^2. THey don’t have the same variable due to th ^2
3c-5-4c=-15 solve for c
Answers
Answer:
c=10
Step-by-step explanation:
First combine like terms by doing 3c-4c to get -1c-5=-15. Then add 5 to both sides to get -1c=-10. Then divide by -1 on both sides to get c = 10
if you count from 1 to 100, how many 7's will you come across?
Answers
Answer:
70
Step-by-step explanation:
if we count from 1 to 100 we will come across 10 7's
what is 1000 − a=400
please answer.
Answers
Answer:
1000-a=400
a = 400 - 1000
a= -600
Answer:
1000-a=400
Step-by-step explanation:
or, -a=400-1000
or,-a= -600
therefore - and - cutting then
a=600
Please help me answer this question!!!!
Answers
9514 1404 393
Answer:
y = 4x +3
Step-by-step explanation:
The slope formula can be used to find the slope:
m = (y2 -y1)/(x2 -x1)
Using the first two lines of the table, we find the slope to be ...
m = (11 -7)/(2 -1) = 4/1 = 4
__
The y-intercept can be found from the relation ...
b = y -mx
Using the slope we found, and the first line of the table, we find the intercept to be ...
b = 7 -4(1) = 3
__
Then the equation is ...
y = mx +b . . . . . . slope-intercept form of the equation for a line
y = 4x +3
Help me pls thank you so much
Answers
The second option
Explanation
Couterclockwise is rotating to the left, so if you rotate the green thing to the left it would be the same as the second option
Answer:
The second option to the right on top.
Step-by-step explanation:
If you rotate something counterclockwise, you basically flip it left. And since it is 90° counterclockwise, it ends up in the first quadrant, and in the exact way it is in the second option.
(hope this helps!)
any help please for my class
Answers
Answer:
Step-by-step explanation:
do 700/20
700/20 = $35 each
hope this helps <3
Answer:
35
Step-by-step explanation:
700/20 = answer
20 tickets: $700
divide by 20 on both sides to get price of one ticket/ unit price
1 ticket: $700/20
1 ticket: 35!
On what interval(s) of x is f(x) positive?
On what interval(s) of x is f(x) negative?
Answers
Answer:
Positive: (-2,1)
Negative: (-∞,-2) U (1,∞)
Step-by-step explanation:
The graph of the function f(x) is given in the figure. We can see some points like (-2,0), (-1,1), (2,-2), and many others.
Note the second value of each point (the value of y) is positive or negative. When it's positive, the graph is above the x-axis, when it's negative, the graph is below the x-axis. When it's 0, the graph crosses the x-axis.
To find the intervals of x where the function is positive, we only have to look into the zone where the graph is above the x-axis. It can be identified as the interval (-2,1).
Similarly, the function is negative in the interval (-∞,-2) U (1,∞)
The function f(x) is positive in the interval [-2, 1].
The function f(x) is negative the interval (-∞, -2) U (1, ∞).
The positive regions of a function f(x) are those intervals where the function is above the x-axis. It is where the y-values are positive (not zero).
To find the intervals of x where the function is positive,
In the interval [-2, 1] , the function f(x) is positive.
The negative regions of a function f(x) are those intervals where the function is below the x-axis. It is where the y-values are negative (not zero).
In the interval (-∞,-2) U (1,∞) , the function f(x) is negative.
y-values that are on the x-axis are neither positive nor negative. The x-axis is where y = 0.
when y = 0, x = -2, 1
Therefore, the function f(x) is positive in the interval [-2, 1] and negative in the interval (-∞,-2) U (1,∞).
For more information:
https://brainly.com/question/5601788
find the least common multiple of 7,3,2
Answers
- least common multiple of 7, 3, 2 = 42
Answer:
42
Step-by-step explanation:
These are all coprime, so the lcm is 7 * 3 * 2 = 21 * 2 = 42
5 star, thanks, and brainliest if helpful!
Tyrell read 72 pages in 2 hours at Thoth is rate how many hours will it take him to read 288 pages . A 4 hours. B 6 hours. C 7 hours D 8 hours
Answers
Answer:
8 hr to read 288 pages
Step-by-step explanation:
First find pages per hour so divide 72 pages by 2 hours to find per hour.
72/2 = 36 pageper hr
288 divided by 36 pages per hour is 8
Answer:
meow
Step-by-step explanation:
right now need answer now ok please do not do wrong
Answers
Answer: -7
Step-by-step explanation:
Answer:
-7
Step-by-step explanation:
Which expression has the smallest value and why?
a. |-19|
b. - |-34|
C. - |11|
d. | 47 |
Answers
Answer:
- 11 i think
Step-by-step explanation:
Im not aure but let ssee if someone will help
help me please! it’s due monday:)
Answers
Answer:
Ground level would be 0cm
Step-by-step explanation:
Since the ground level is the starting point or the base it would be considered 0cm.
Please help ASAP!!!!
Answers
Answer:
it's answer is y = + √x - 1 Yes
Step-by-step explanation:
Hope it will help :)❤
Solve.
6x−13=2x+7
2
3
5
6
Answers
Answer: x = 5
Step-by-step explanation:To solve this you first need to collect the like terms 6x-2x=7+3. Add those 4x=20. After that you need to divide both sides. Then you will get you solution.
Answer:
Step-by-step explanation:
6x−13=2x+7
Inverse operation:
6x into a negative then subtract it by 2x
2x - 6x = -4
Change 7 into a negative then subtract it by -13
-13 - 7 = -20
-20 = -4x
Divide:
-20 = -4x
_______
-4 -4
-20/-4 = 5
Answer:
5 = x or x = 5
Help me plssss hurry!!!!Which expressions are equivalent to 6+(-4) - 5?
Choose 2 answers:
А. -(-6+4) – 5
B. 6-4-(-5)
C. 6-(4+5)
D. 6+4-5
E. -(-6) + (-4) – (-5)
Answers
Answer:
a)
c)
...................
What are arithmetic sequences
Answers
Which expression is equivalent to
13c + 9f - 7f + 3c + 15 - 2
Expression 1: 16e + 2f + 13
Expression 2: 28e + 2f + 1
Expression 3: 22e + 8f + 1
Expression 4: 6e + 12f + 13
Answers
Answer:Sorry but none where c there e but no c .
But it would be 16c +2f +13 .
Step-by-step explanation:you need to combine like terms
which are 13c +3c =16c and 9f- 7f=2f and 15-2 =13 .
Hope it helps .
An expression is shown in the screenshot pls answer!!!
Answers
Answer:
[tex]2^{7} -9(4*4+4)[/tex]
Step-by-step explanation:
What is 2 to the 400th power factorial?
Answers
Step-by-step explanation:
2^400=2^(2×200)
2^(2×200) =[2^(2) ]^200
Now, [2^(2) ]^200=4^200
The power of 2 in 400! is 397.
What is the method of determination of power of prime in Factorial ?Let p is the prime number whose power is to be found
Let n is the factorial number then
p in n! = (n /p) + (n/p²) +(n/p³) + .......
until Numerator < Denominator
and after division only the integer part is taken
Therefore to determine the power of 2 in 400!
2 in 400! = (400 /2) + ( 400 /2²) + (400 /2³) +(400 /2⁴) +(400 /2⁵) +(400 /2⁶) +(400 /2⁷) +(400 /2⁸) + above this N < D
2 in 400! = 200 +100 +50+25+12+6+3+1
2 in 400 = 397
Therefore the power of 2 in 400! is 397.
To know more about power of prime in Factorial
https://brainly.com/question/4680412
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2 • (3 • 7) and (2 • 3) • 7 = ?
Answers
Answer:
First one is 42 and the second one is 48.
Step-by-step explanation:
Start with parentheses. I'll use the first one as an example. 3 x 7 is 21. Now that the parentheses are done, multiply it by whatever's left. 21 x 2, that's 42. For the other one, 2 x 3 is 6, x 7, is 48. Have a good day :)