Answer: 18
Step-by-step explanation:
X-1=2
X=3
2(3)^2
2(9)
18
Value of an algebraic expression depends on the values of its variables usually. The value of [tex]2x^2[/tex] for given condition is obtained to be 18
How to evaluate a given mathematical expression with variables if values of the variables are known?You can simply replace those variables with the value you know of them and then operate on those values to get a final value. This is the result of that expression at those values of the considered variables.
For the given case, we are given that [tex]x - 1 =2[/tex]
By this, we can get the value of the variable 'x' as:
[tex]x - 1 = 2\\\text{Adding 1 on both the sides, we get}\\x = 3[/tex]
Now, putting 3, in place of x, in expression [tex]2x^2[/tex], we get:
[tex]2x^2 = 2 \times (3^2) = 2 \times 9 = 18\\[/tex]
( sign of multiplication is often hidden if there are non numeric symbols and numbers being multiplied are written together, thus, [tex]2x^2 = 2 \times x^2[/tex])
Thus, the value of [tex]2x^2[/tex] for given condition is obtained to be 18
Learn more about evaluating expressions here:
https://brainly.com/question/2753269
Leo gathered data about the weight, in pounds of his suitcase when it was packed for trips lasting different numbers of nights. the data he gathered is organized in the table. (PLEASE ANSWER FOR REAL!!! NO BS LIKE RANDOM LETTERS OR IDK!)
Nights (x) 2, 3, 4, 5, 6
Weight (y) 17, 22, 26, 30, 35
Answer:
y=4.4x+8.4
Step-by-step explanation:
Help me please!! Answer question #21 ( the middle question)
Answer:
i dont know sorry
Step-by-step explanation:
i dont understand i just watch anime all day
Answer:
Free points? idek sorry.
Step-by-step explanation:
New car is purchased for $20,700 the value of the car depreciates at 11% per year what will the value of the car be after 11 years
Answer:
18423
Step-by-step explanation: 18423 (I think this is correct. Sorry if this didn't help.)
which orders paid is a solution is the equation y= 4x + 9
Note: you did not add the answer options, so I am solving this question generally to solve your query, which anyways would clear your concept.
Answer:
Please check the explanation.
Step-by-step explanation:
Given the equation
[tex]y= 4x + 9[/tex]
All we need is to find any random value of 'x' and then solve for 'y'.
For example, putting x=2
[tex]y= 4x + 9[/tex]
[tex]y=4(2)+9[/tex]
[tex]y=8+9[/tex]
[tex]y=17[/tex]
Thus, (2, 17) is one of the many ordered pairs solutions of the equation.
Similarly, putting x=3
[tex]y= 4x + 9[/tex]
[tex]y=4(3)+9[/tex]
[tex]y=12+9[/tex]
[tex]y=21[/tex]
Thus, (3, 21) is one of the many ordered pairs solutions of the equation.
A department store is offering the same percentage discount on all of their shoes. Suppose one pair of shoes is marked down from $70 to $49. Based on that percentage discount, what would the new price be for a pair of shoes that originally cost $100?
MIDDLE SCHOOL QUESTION
Use the drop-down menus to choose steps in order to correctly solve
4k - 6= -2k - 16 - 2 for k.
20 POINTS the perimeter of a semicircular disc whose diameter is 28 cm.
Answer:
87.96 cm
Step-by-step explanation:
I had this answer up but it got deleted for sum reason....
Please help asap!! I will mark you as brainliest :)
Pls help!!! Fastttttttttttttttt
Answer:
a
Step-by-step explanation:
that shows
0+4.5=4.5-2.5=2
find the value of this expression if x= -7
x^2+5/x+1
Answer:
-9
Step-by-step explanation:
Replace x with -7 in the expression:
x^2 + 5 / x + 1
-7^2 + 5 / -7 + 1
49 + 5 / -6
54/-6
simplify the fraction
9/-1 = -9
Two planes travel at a constant speed. Plane A travels 2,700 miles in 5 hours. Plane B travels 3,815 miles in 7 hours. Which plane is faster?
Answer:
Plane B is faster
Step-by-step explanation:
please show work
Write the point-slope form of the equation of the line through the given points.
3) through: (4,5) and (0,2)
Answer:
y - 5 = 3/4 (x - 4) so A
Step-by-step explanation:
It's would be A because the original equation is Y - Y1 = m (X - X1)
Since a coordinate is (x, y) the Y1 = 5 and the X1 = 4
If you plug those in the equation, it will give you y - 5 = m(x - 4)
Now, to figure out the slope, you have to know how you get can to the points (4, 5) from (0, 2). Slope is change in y / change in x. so to get from 0 to 4 for x, you add 4, and 2 to 5 for y, you add 3. Meaning the slope is 3/4. The m in the equation is the slope, so if you plugin the slope, the equation would be
y - 5 = 3/4 (x - 4)
!100 POINTS!
The graph of g(x) is transformed from its parent function, f). Apply concepts involved in determining the key features of
a rational function to determine the domain and range of the function, g(x)=
1/X-6
A. What is the domain of the function, g(x)?
B. What is the range of the function, g(x)?
add and reduce to lowest terms: 1 2/3+ 2 3/7 I need help ASAP
Answer:
The answer is 4 2/21
Step-by-step explanation:
Answer: 4 4/21
Step-by-step explanation: 1 2/3=1 14/21. 2 3/7=2 9/21
-2²-3(-2)+7
I think it’s 17 but idk
Answer:
9
−2^2−(3)(−2)+7
=−4−(3)(−2)+7
=−4−(−6)+7
=2+7
=9
PLS HELP ASAP PLSSS IT DETECTS IF ITS RIGHT OR WRONG HELPPP
Answer:
B
Step-by-step explanation:
PLEASE HELP ME!!!!
What is the domain and range of the relation shown in the table?
Answer:
the answer is c
Step-by-step explanation:
good luck
Answer:
last option
Domain: -3,-1,2,5 Range: 0,2,4
It may be the one above it but you have to be careful because it might say that 0 is a real number or it is not. Fair warning!
Step-by-step explanation:
The domain is the x values and the range is the y values.
Hope this helps!
Timed math PLEASE HELP 8th GRADE HELPPPPPPP
Answer:
John's and Amber's wages are proportional to time. John's unit rate it $9 per hour. Amber's unit rate is $8 per hour
Step-by-step explanation:
The table(johns) shows this because he earns $9 more for every extra hour he works. this makes the unit rate $9 an hour.
The graph(ambers) shows that her pay increases at a steady rate, hitting a multiple of 8 every hour. This makes the unit rate $8 an hour.
What is the range of the function
f(x) = = 3x + 2 in the domain -2
Answer:
The range is:
{-4, 1, 2, 5, 8}
Step-by-step explanation:
Given the function
[tex]f(x)=3x+2[/tex]
We know that the domain of a function is the set of input or argument values for which the function is real and defined.As the domain interval -2 ≤ x ≤ 2
i.e. the values in the domain = {-2, -1, 0, 1, 2}
We also know that the range of a function is the set of values of the dependent variable for which a function is defined.As the domain interval -2 ≤ x ≤ 2
Putting all the x-values in the domain interval in the function
so
putting x=-2 in the function
[tex]f(x)=3x+2[/tex]
[tex]f(-2)=3(-2)+2=-6+2=-4[/tex]
putting x=-1 in the function
[tex]f(x)=3x+2[/tex]
[tex]f(-1)=3(-1)+2=-3+2=1[/tex]
putting x=0 in the function
[tex]f(x)=3x+2[/tex]
[tex]f(0)=3(0)+2=0+2=2[/tex]
putting x=1 in the function
[tex]f(x)=3x+2[/tex]
[tex]f(1)=3(1)+2=3+2=5[/tex]
putting x=2 in the function
[tex]f(x)=3x+2[/tex]
[tex]f(2)=3(2)+2=6+2=8[/tex]
Thus, when we put the domain values, the corresponding range values are:
x y
-2 -4
-1 1
0 2
1 5
2 8
Therefore, the range is:
{-4, 1, 2, 5, 8}
Find the equation of the line in slope intercept form that is perpendicular to the line y= 2x -3 and that contains the point (1,-2)
Answer:
[tex]y=-\frac{1}{2} x-\frac{3}{2}[/tex]
Step-by-step explanation:
A line contains two distinct points, C and D. Select each correct statement,
Points C and D determine one unique line,
There are infinitely many points between points C and D.
The distance from C to D is equal to the distance from D to C.
O Any line segment that contains point C must also contain point D.
Answer:
We have a line that passes through points C and D.
a) Points C and D determine one unique line
This is true, there is only one line that passes through a given pair of points, then we can call this line as "Line CD".
b) There are infinitely many points between points C and D.
This is also true, if we define the points with real numbers in R^2, we will have a dense set, which means that between C and D we can find infinite points.
c) The distance from C to D is equal to the distance from D to C.
Also true, the distance between two points C = (cx, cy) and D = (dx, dy) is defined as:
D = √( (cx - dx)^2 + (cy - dy)^2)
And because we have squares, this will be exactly the same as:
D = √( (dx - cx)^2 + (dy - cy)^2)
Then the distance from C to D, is exactly the same as the distanco from D to C.
d) Any line segment that contains point C must also contain point D.
This is false, we can define infinite segments where the endpoint is C, and does not pass through point D (some examples are given in the image below) So this is the only false option.
Zoe invested $16,000 in an account paying an interest rate of 3.6% compounded
quarterly. Assuming no deposits or withdrawals are made, how much money, to the
nearest hundred dollars, would be in the account after 20 years?
Answer:
Its 32800
Step-by-step explanation:
⚠️How do I solve this in descending order⚠️
2g+40g
Side info: so I know the answer is technically 42g but I also know that I have to do this in descending order so just need help with that check notifications I might ⚠️ comment ⚠️
On a road map, the distance between 2 cities is 2.5 inches. The map scale is 1 inch:30 miles. What is the actual distance between the cities?
Answer:
75
Step-by-step explanation: 2 times 30 is 60 30 divide by .5 is eqaul to 15 becasue it is half
and 60+15=75
Answer:
75 is the anwer
Please help me!!!!!! I really neeeeeeed
Answer:
A-(x+4,y-5)
B- move 1 unit left and 7 units down
Step-by-step explanation:
A- 4 units right is x so
(x+4,y__)
5 units down is y so
(x+4,y-5)
B- move 1 unit left and 7 units down
because (x-1,y__) is going left because of the subtraction sign and its the x-coordinate, and (x-1,y-7) is down because its a Y-coordinate and sub so its going down.
TIP- Going left/down is always subtract/negative going right/up is positive/addition.anyone wanna help me out please? I will be givin out brainliest!! Thanks
Answer:
62
Step-by-step explanation:
please mark me as brainliest
Find the measure of the unknown angle.
Answer:
131° Degrees
Step-by-step explanation:
It's the same just put in different places
Answer:
The answer is in the screenshot provided.
Step-by-step explanation:
PLEASE HELP, WILL MARK BRAINLIEST
25−(3x+5)=2(x+8)+x
Answer:
x = 2/3
Step-by-step explanation:
solve - 3-5 = 15?
Devide each by -3-5
Multiply each by -3-5
multiply each side by -3-5
Answer:
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOooooooooooooOOOOOOOOOOOOOOOOOOOOOFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFfffffffffFFFFFFFFFFFFFFfffffffffffff
Step-by-step explanation:
You did the same thing to me
HELP PLEASE!!! I NEED HELP ASAP!!!
Answer:
d
Step-by-step explanation: