Answer:
2=x
y=3
Step-by-step explanation:
x is always first then its y
for example (4,7) x=4 and y=7
enjoy your day hoped this helped :)
The x- coordinate is 2 and y- coordinate is 3.
What are coordinates?Coordinates are a pair of integers (Cartesian coordinates), or sporadically a letter and a number, that identify a certain place on a grid, also referred to as a coordinate plane. The x axis (horizontal) and y axis are the two axes that make up a coordinate plane (vertical).
Coordinates are expressed as (x, y), which denotes that the x-axis point is written first, followed by the y-axis point.
Given:
Points( 2, 3)
As, the standard form of writing the coordinate in cartesian plane is (x, y)
Here, the first coordinate lies on horizontal axis i.e., x- axis and called as x- coordinate.
The second coordinate lies on vertical axis i.e., y- axis and called as y- coordinate.
Hence, the x- coordinate is 2 and y- coordinate is 3.
Learn more about coordinates here:
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If f(x)=4x-1 , what is f(1) ??
Answer:
f(1) = 3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
FunctionsFunction NotationStep-by-step explanation:
Step 1: Define
f(x) = 4x - 1
f(1) is x = 1
Step 2: Evaluate
Substitute in x [Function]: f(1) = 4(1) - 1Multiply: f(1) = 4 - 1Subtract: f(1) = 3
The area of a rectangle is 27 m”, and the length of the rectangle is 3 m less than twice the width. Find the dimensions of the rectangle.
Answer:
[tex]L = 6[/tex] --- Length
[tex]W = 4.5[/tex] --- Width
Step-by-step explanation:
Given
Let: [tex]L = Length; W = Width[/tex]
[tex]Area = 27m^2[/tex]
[tex]L = 2W- 3m[/tex]
Required
Find the dimensions of the rectangle
Area (A) is calculated as:
[tex]A = L * W[/tex]
This gives:
[tex]27 = (2W - 3) * W[/tex]
Open bracket
[tex]27 = 2W^2 - 3W[/tex]
Express as a quadratic function
[tex]2W^2 - 3W - 27 = 0[/tex]
Expand
[tex]2W^2 + 6W - 9W - 27 = 0[/tex]
Factorize:
[tex]2W(W + 3) - 9(W + 3) = 0[/tex]
[tex](2W - 9)(W + 3) = 0[/tex]
This gives:
[tex]2W - 9 = 0\ or\ W + 3 = 0[/tex]
[tex]2W = 9 \ or\ W = -3[/tex]
Width can not be negative.
So:
[tex]2W = 9[/tex]
[tex]W = 4.5[/tex]
Recall that:
[tex]L = 2W- 3m[/tex]
[tex]L = 2 * 4.5 - 3[/tex]
[tex]L = 6[/tex]
An arrow is shot up in the air from a height of 3 feet. The height of the arrow, in feet,can be modeled with the function h= -2t^2+12t+3where his the height in feet and is the time in seconds.Enter the average rate of change, in feet per second, from 1 second to 4 seconds
Answer:
The average rate of change is two feet per second.
Step-by-step explanation:
The height of an arrow shot up into the air from a height of three feet is given by the function:
[tex]h(t)=-2t^2+12t+3[/tex]
And we want to find its average rate of change from one second the four seconds.
The average rate of change is synonymous with the slope. Therefore, we can evaluate the height of the arrow after the first and fourth seconds, and find the slope between them.
After the first second, the height of the arrow is:
[tex]h(1)=-2(1)^2+12(1)+3=13[/tex]
And after the fourth second, the height of the arrow is:
[tex]h(4)=-2(4)^2+12(4)+3=19[/tex]
This yields two points: (1, 13) and (4, 19).
The slope between them is:
[tex]\displaystyle m=\frac{19-13}{4-1}=\frac{6}{3}=2[/tex]
Therefore, the average rate of change from one second to four seconds is two feet per second.
A stone is thrown upward, its height h meters after t seconds is given by this formular h=30t-5t². Find t when it is at a height of 25m, why are there two answers, what do they mean?
Answer:
the answer is
T¹=5s
T²=1s
Am not sure about why there's two times , although perhaps the two times indicate the starting time and the other indicate the time when the stone hits 25m above the ground
Step-by-step explanation:
the solving steps are in the picture.
Todd had 6 gallons of gasoline in his motorbike. After driving 150 miles, he had 3 gallons left. Compute the slope, or rate of change in the amount of gasoline.
The rate of change is __ miles per gallon.
Answer:
50 miles per gallon, 50/1
Step-by-step explanation:
I NEED HELP PLEASE HELP ME
Answer:
Length should be 15 cm and width should be 5 cm
Step-by-step explanation:
5 * 3 = 15
15+15+5+5=40
:)
How do I tell my mom I have depression so she will stop hurting me with hurtful words-
Answer:
Just tell her and if she says you dont tell her that you do. If she continues to hurt you then probaly call the police.
Step-by-step explanation:
Answer:
try to find someone close to you like a relative or best freind and tell them about her. After that try to confront her about it, and bring that close one with you to make you feel more strong. if she says you dont
have it and contiues hurting you tell the police.
NEED HELP PLEASE HELP (Please indicate answer for which part) :) Thank you
A box contained black beads and white beads. At first, the number of black beads was 1/3 the number of white beads. After 1/4 of the black beads and 3/8 of the white beads were used, 63 beads were left.
(a) What fraction of the beads were used? Leave your answer in the simplest form.
(b) How many beads were there in the box at first?
Answer:
A
Step-by-step explanation:
A
Identify the slope and y intercept of the function y=4x-9
cual es valor absoluto de -7
Answer: -7
Step-by-step explanation:
−7
=−7
Find the area of the triangle.
Answer:
to find the area, multiply the base times the height and divide it by two. we do not have the picture of the triangle, so we cannot answer this but here is the formula
(BxH)/2 = A
Question 5 Multiple Choice Worth 1 points)
(05.02 MC)
Find the measure of angle x in the figure below:
A - 35
B - 47
C - 51
D - 62
Answer:
C because to get y u do 180 - 57+61 than for x u do 180 - 62+67
Answer:
x=51
Step-by-step explanation:
y+57+61=180 linear pair
y=180-118=62
in triangle
x+y+67=180sum of interior angle of the triangle is 180
x+62+67=180
x=180-129=51
Eight times the reciprocal of a number equals 4 times the reciprocal of 9 .
Answer:
2/9
Step-by-step explanation:
Call the unknown number n
Therefore, we can express your question in the following manner
8 * n = 4 * 9
n = 36/8
But we know that n is a reciprocal of a number, so we need to flip the numerator and denomiator in n
Answer: 8/36 = 2/9
5 points Two lines are represented by equations: 10x - 15y = 21 and y = kx + 5. What value of k will make lines perpendicular?
Answer:
Step-by-step explanation:
10x - 15y = 21
15y = 10x - 21
y = ⅔x - 7/5
slope of line is ⅔
slope of any perpendicular to line is -3/2
y = kx + k
slope of line is k
k = -3/2
Please Help! 1/4a^2=10
Answer:
a = 6.32 or 2(sqrt 10)
Step-by-step explanation:
1/4a^2 = 10
multiply both sides by 4:
a^2 = 40
a = sqrt 40 = 6.32 or 2(sqrt 10)
Question
Use the discriminant to determine the number of real solutions to the quadratic equation.
-2a^2 – 11a – 10 = 0
Top
Previous
Find x Question is attached:
PLease I need the answer fast!!!
Answer:
Step-by-step explanation:
(-3)ˣ⁻² = -243
(-3)ˣ⁻² = (-3)⁵
x-2 = 5
x = 7
14 POINTS!!
Which model represents the product 6 x 3/4?
Answer:
Bottom right
Step-by-step explanation:
Answer: bottom right!!
Step-by-step explanation
the sum of three numbers is 112. the third number is 3 times the first. the second number is 7 more than the first. what are the numbers?
Answer:
all the would need water becouse water is the main reason to get live
Can someone help out with this question
Given: BC ≅ DA, ∠CBD ≅ ∠ADB
Prove: △BCD ≅ △DAB
Answer:
Step-by-step explanation:
Side-angle-side.
help please and thanks <3
Answer:
x<14
Step-by-step explanation:
7+7>x by triangle inequality theorem
14>x or x<14
Arithmetic mean of nine observations is calculated as 38. But in doing so, mistakenlythe observation 27 is taken instead of 72. Find the actual mean of the data.
Answer:
Actual Mean = 43
Step-by-step explanation:
Given Mean = 38
No of observations = 9
we know,
Mean = Sum / N
38 = Sum/ 9
Sum = 38 x 9 = 342
Since the observation 27 was mistakenly taken instead of 72, we subtract 27 from the sum and add 72.
New sum = 342 - 27 = 315 again, 315 + 72 = 387
The no. of observations stays the same.
Actual mean = New Sum / N
= 387/9
=43
Step-by-step explanation:
arithmetic mean =38
n=9
mean=sum/n
sum=mean×n=38×9=342
mistakenly observation 27 is taken instead of 72
new sum becomes =342+72-27=387
now
new mean =new sum/n=387/9=43
the actual mean of the data is 43.
F(x)=1/ x shift 9 units right and 4 units down
Answer:
g(x) = 1/(x-9) - 4
Step-by-step explanation:
f(x) shift 9 units right -> f(x-9) = 1/(x-9)
further shift 4 units down: 1/(x-9) - 4
A shoe store recorded the price (in dollars) of 175 pairs of women's shoes and 175 pairs of men's shoes. The data collected was used to create the following table.
Answer:
Most of the mens shoes in the data sets cost more than the womens shoes
Step-by-step explanation:
i did this and got it correct
A builder could get 9 sheets of Sheetrock for $20. If he bought 15 sheets, how much money would he have spent?
PLEASE ANSWERRR! FIRST CORRECT ANSWER WILL VOTE BRAINLIEST
For a certain value of k, the system
x + y + 3z = 10,
-4x + 3y + 5z = 7,
kx + z = 3
has no solutions. What is this value of k?
Answer:
k = 7/4Step-by-step explanation:
Given system:
x + y + 3z = 10, -4x + 3y + 5z = 7, kx + z = 3Substitute z in the first two equations with z = 3 - kx:
x + y + 3(3 - kx) = 10 ⇒ (1 - 3k)x + y = 1 ⇒ y = (3k - 1)x + 1-4x + 3y +5(3 - kx) = 7 ⇒ -(4 + 5k)x + 3y = -8 ⇒ y = 1/3(5k + 4) - 8In order the two equations above not to have a solution, the lines should be parallel. Parallel lines have equal slopes.
Solve the following equation for k:
3k - 1 = 1/3(5k + 4)9k - 3 = 5k + 44k = 7k = 7/4I was training the cross country team. Every week I expected the students to run 12 3/4 miles every week. If the kids ran
for 5 days that week, how many miles would they need to run each day to meet my expectations ?
Answer:
x = 2.55 miles per day
Step-by-step explanation:
In English: 5 days * 'x' miles per day = 12 & 3/4 miles total
In algebra: 5x = 12.75
x = 12.75 ÷ 5
x = 2.55 miles per day
Find the size of angle XYZ. Give your answer to 1 decimal place.
Answer:
45
Step-by-step explanation:
Because this is a triangle all angles must add up to 180. so we already know 90 so 180-90=90 and 90/2 = 45. Hope this helps
Step-by-step explanation:
1. Label each side of the Triangle
Using the SOH CAH TOA method we can label zy as H (the longest line is always H). We can label xz as O (it is opposite the angle). We can label xy as A (it's the remaining side).
2. Cross out the 'useless' side
Now, we need to cross out the label which doesn't have an appointed piece of information to it. Meaning that A will remain as it labels 7cm. H will also remain as it labels the angle. O does not label anything and so we can cross it out.
3. Decide which method is correct
We are using the SOH CAH TOA method, this means we can either use SOH, CAH, or TOA to solve the problem. We know which method to use by seeing which of them does not contain the letter we crossed out. CAH does not contain O so it is the correct method.
4. Know the formula
Now we will use the formula of our found method. CAH begins with C and so does Cos. Therefore, Cos is our formula.
Cos( ) = A/H
5. Substitute in your numbers
Then, we will put in our numbers into the formula. The first slot we must fill in is within the brackets. Usually the angle goes inside of the brackets during trigonometry but we obviously do not know it. This means we will use 'x' inside of the brackets. Our formula now looks like this:
Cos(x)
Substitute in A and H. A will be the information appointed to the side we labelled A. H will be the information appointed to the side we labelled H.
Our formula will look like this:
Cos(x) = 7/12
6. Reverse it and calculate
Now we need to input an equation into our calculator. I don't know why but we will need to reverse our previous formula and type it into the calculator as:
cos-^1(7/12)
The result should say 54.31466529.
7. Round
Now we will round it by 1 decimal place. To do this we need to look at the number next to 3, it is not 5 or above 5. This means we will not round up,
our answer is 54.3 degrees.
Help please!!!
Thanks
Answer:
25.6
Explanation:
t = 2 seconds
h = 8 + 40.8(2) - 16(2)^2
Solve for h by simplifying both sides of the equation, then isolating the variable.
h = 25.6