Answer:
f(x)=x-3
Step-by-step explanation:
You are given x-y=3 and you want to rewrite in function notation with x being the independent. That means we need to solve for y so y can depend on x.
x-y=3
Subtract x on both sides:
-y=-x+3
Multiply both sides by -1:
y=x -3
So function notation would be f(x)=x-3
The function notation of the equation x - y = 3, with x as the independent variable, is f(x) = x - 3.
Explanation:The equation x - y = 3 is in standard form. To express this equation in function notation with x as the independent variable, we need to solve for y in terms of x. By moving y to the other side of the equation and 3 to the opposite side, we get y = x - 3. In function notation, where y is usually replaced by the function f(x), the equation becomes f(x) = x - 3.
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The equation of a line is 3x + 8y - 16 = 0.
What is the slope and y-intercept?
slope =?
y intercept =?
Help confused !
What is the median of this data set?
22, 37, 49, 15, 82
O
<
A. 37
O B. 27
O C. 31
O D. 41
Answer:
A. 37
Step by step explanation:
The median is the middle value with high to low frequency and low to high frequency. How to determine the median is to sort the numbers from the smallest to the big number and the largest number to the smallest number, then count using two hands (one finger left hand and one finger right hand).
Method:
22, 37, 49, 15, 82 then sorted: 82, 49, 37, 22, 15 means the median is 37
-----------------------✨ Awesome ✨-----------------------The median of this data set is 49.
Option A is correct.
What is Median of the Data?The median is the value in the middle of a data set, which means that 50% of the data points have a value less than or equal to the median, and 50% of the data points have a value greater than or equal to the median. Given a small data set, count the number of data points (n) and arrange them in increasing order.
We have the data: 22, 37, 49, 15, 82
Now, arranging the data in Ascending order as
15, 22, 37, 49, 82
Now, the median is the middle term of the data.
Here there are 5 terms.
So, the median of data is 37.
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whole numbers to make 380 in four different ways.
Answer:
There are several ways to make 380 with whole numbers. For example:
100 + 80 = 380220 + 160 = 380190 + 190 = 3801 + 379 = 380estimate 16.667 + 7.66 by first rounding each number to the nearest tenth
Answer:
24.4
Step-by-step explanation:
16.667 + 7.66 becomes 16.7 + 7.7, which, in turn, is 24.4
Answer:
24.4
Step-by-step explanation:
The nearest tenth is the first decimal place. We look at the second decimal place. If it is 5 or above we round up
16.667 to the nearest tenth = 16.7
7.66 to the nearest tenth = 7.7
16.7 + 7.7 = 24.4
Triangle ABC has coordinates A(2, 4), B(5, 6), and C(1, 4). If the triangle is rotated 180° clockwise about the origin, what are the coordinates of B'?
Answer:
B'(-5,-6)
Step-by-step explanation:
The mapping for 180° clockwise rotation about the origin is:
[tex](x,y)\to (-x,-y)[/tex]
The find the image of B(5,6), we plug in x=5 and y=6 into the rule.
[tex](5,6)\to (-5,-6)[/tex]
Therefore the coordinates of B' are (-5,-6).
Point B with coordinates (5, 6) will have coordinates (-5, -6) after a 180° clockwise rotation about the origin.
Triangle ABC has coordinates A(2, 4), B(5, 6), and C(1, 4). If the triangle is rotated 180° clockwise about the origin, we need to find the coordinates of B'.
To rotate a point (x, y) 180° about the origin, we can multiply the coordinates by -1. So, the coordinates of B' after rotation will be (-5, -6).
The graph shows the function f(x) = |x – h| + k. What is the value of k? k = –2.5 k = –1 k = 1 k = 2.5
Answer:
k= - 2.5
Step-by-step explanation:
If the graph is the attached picture then according to this:
The graph is in V- shape. So if the corners of the graph are not at (0,0) than there must be a constant.
k is the constant which means that it is the amount the function is vertically shifted. The graph is shifted 2.5 units down, therefore the value of k is -2.5.
Thus option 1 is correct....
find the absolute error of the measurement 10 meters. explain its meaning
Answer:
.5 m
Step-by-step explanation:
You can use maximum possible error to calculate absolute error
Maximum possible error of is half the unit of measure
This means it is ±0.5 meters
In this case, you find the place value the measurement 10 meters is rounded to .This measurement was measured to the nearest meter, thus the measuring unit is 1 meter.
Here you use the maximum possible error as the absolute error.
This means the measurement is 10 ± .5
A train can hold 78 passengers. The train starts out empty and picks up one passenger at the first stop,2 passengers at the second stop,3 passengers at the third stop,and so forth. After how many stops will the train be full.
Answer:
After the 12th Stop
Step-by-step explanation:
2nd stop 1+2=3
3rd 3+3=6
4th 6+4=10
5th 10+5=15
6th 15+6=21
7th 21+7=28
8th 28+8=36
9th 36+9=45
10th 45+10=55
11th 55+11=66
12th 66+12=78
After the 12th stop.
The train will be full after 12 full stops. If we include the 13th stop, the train would exceed its capacity. Therefore, the train can handle 12 full stops if it picks one passenger at the first stop and increases the number of passengers picked by one at each stop.
Explanation:The problem you're describing is a summation problem in mathematics. You're incrementing the number of passengers at each stop starting at one and increasing by one each time. This can be summed up using the formula for the sum of the first n positive integers (including one), which is n*(n+1)/2. To find out after how many stops the train will be full, you'll need to solve this formula for n such that this sum is less than or equal to 78 (the capacity of the train). You can do this by substitution or by solving the quadratic equation, n² + n - 156 = 0. The result is roughly 12.421, which means that after 12 full stops, the train will have 78 passengers (since we can't have a fraction of a stop). After the 13th stop, the train will exceed its capacity.
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Which of the following is a function?
A. {(1,1), (2,5), (-2,5), (1,-1)}
B. {(-1,1), (-2,1), (-1,3), (-4,1)}
C. {(-1,1), (-1,2), (-1,3), (-1,4)}
D. {(-1,1), (-2,2), (-3,3), (-4,4)}
Answer:
D
Step-by-step explanation:
Reminder: A function returns ONLY ONE y value for each input value.
We immediately discard possible answer A, since 2 points have input 1 with different outputs.
Same for B: discard this.
Same for C: discard this.
D is a function. All of the inputs are unique (no duplication).
Ronalds furniture house is currently making 50 sofas in a day. How many sofas will be produced if prudction is to be increased by 150%
Answer:
125
Step-by-step explanation:
50 x 150% = 75
75 + 50 = 125
Answer:
125
Step-by-step explanation:
50 × 150% = 50 × 1.5 = 75
75 + 50 = 125
125 sofas is the answer
Let's investigate
You have an appointment at 2 o'clock at the dentist. Then you need to catch a
train one hour after your appointment. The walk to the train station takes
20 minutes. What time will you have to leave the dentist to catch your train?
Select the correct answer.
If a line crosses the y-axis at (0, 1) and has a slope of 4/5, what is the equation of the line?
Answer:
5y - 4x = 5. This gives you your points with a slope of 4/5
Answer:
[tex]y=\frac{4}{5}x+1[/tex]
Step-by-step explanation:
We are given the slope, and the y-intercept. So we can use the slope-intercept equation. Which is as follows:
[tex]y=mx+b[/tex]
where [tex]m[/tex] is the slope and [tex]b[/tex] is the y-intercept (the value of [tex]y[/tex] when [tex]x=0[/tex]).
The information that we have is that the slope of the line is:
[tex]m=\frac{4}{5}[/tex]
and that the line crosses the y-axis at (0, 1).
From this point we can find the y-intercept [tex]b[/tex], because b is the value of [tex]y[/tex] when [tex]x=0[/tex].
And since the line passes through (0, 1) when [tex]x = 0[/tex], [tex]y =1[/tex]. Thus, the y-intercept is:
[tex]b=1[/tex]
substituting the values of the slope and the y-intercept into the equation:
[tex]y=mx+b\\y=\frac{4}{5}x+1[/tex]
the answer is: [tex]y=\frac{4}{5}x+1[/tex]
Simplify (x-4)(x^2+5x+2).
Answer: x^3 + 1x^2 - 18x - 8
Step-by-step explanation: Using the box method, we get the values x^3, 5x^2, 4x^2, 20x, 2x, and 8. Then you add the like terms to get your final answer.
lol my diagram got glitched out when uploading, sorry if its hard to understand
A football team started at the line of scrimmage. On the first play of the drive, the team lost 4 yards. On the second play of the drive, the team gained 45 yards. Taylor calculated |–4 – 45| = |–49| = 49, and said that the team gained a total of 49 yards on the two plays. Which best describes Taylor’s error?
A. Taylor did not find the correct distance between –4 and 45.
B. Taylor did not make an error. The team gained a total of 49 yards on the two plays.
C. Taylor correctly found the distance between –4 and 45, but this number represents the team’s total loss, not the team’s total gain.
D. Taylor correctly found the distance between –4 and 45, but this number represents the total distance the team moved in both directions, not the team’s total gain.
Answer:
D. Taylor correctly found the distance between –4 and 45, but this number represents the total distance the team moved in both directions, not the team’s total gain.
Step-by-step explanation:
The team only ended up gaining the 45 yards on the second play and had gained -4 on the first play. 45-4≠49, but the total distance between -4 and 45 is 49.
Answer:
D.
Step-by-step explanation:
Clyde simplified ( j^-8)^-2
ANSWER
[tex]{j}^{16} [/tex]
EXPLANATION
The given expression is
[tex]( {j}^{ - 8} )^{ - 2} [/tex]
To simplify this expression, we use the law of exponents.
Recall that:
[tex] {(a}^{m} )^{n} = {a}^{mn} [/tex]
We need to multiply the exponents to get:
[tex]( {j}^{ - 8} )^{ - 2} = {j}^{ - 8 \times - 2} [/tex]
[tex]( {j}^{ - 8} )^{ - 2} = {j}^{16} [/tex]
Therefore after simplification, Clyde got:
[tex]{j}^{16} [/tex]
Answer:
Clyde should have applied the power of a power rule and multiplied the exponents instead of adding them. The simplified form should be j to the 16th power.
Step-by-step explanation:
The exponents should be multiplied.
The simplified form should be j^16
Evaluate the expression -66/(-3)+(-4)-(-5)
Answer:
-21
Step-by-step explanation:
For this case we must evaluate the following expression:
[tex]\frac {-66} {(- 3)} + (- 4) - (- 5) =[/tex]
We solve the division:
[tex]22 + (- 4) - (- 5) =[/tex]
We eliminate parentheses keeping in mind that:
[tex]+ * - = -\\- * - = +[/tex]
So:
[tex]22-4 + 5 =[/tex]
Different signs are added and the same sign is placed, while different signs are subtracted and the sign of the major is placed:
[tex]18 + 5 =\\23[/tex]
Answer:
23
p(x) is a polynomial with integer coefficients and p(-3) = 0. Which statements must be true? Choose all that apply. (MORE THAN ONE ANSWER)
x + 3 is a factor of the polynomial.
x - 3 is a factor of the polynomial.
-3 is the constant term of the polynomial.
p(x) can have at most 3 linear factors.
Answer:
x+3 is a factor of P
Step-by-step explanation:
By the factor theorem:
P(a)=0 <-> x-a is a factor of P.
You have P(-3)=0.
This implies x-(-3) is a factor of P.
Note: x-(-3)=x+3.
6. The sum of 3 consecutive odd integers is 87. Find the equation used to solve this
problem. Find the three integers.
An +n + 2 +n +4-87:
n-27, n + 2 - 29, n + 4- 31
B
n
+n +1 +n + 2 - 87:
n=28, n + 1 = 29, n + 2 = 30
Cn +n +1+n + 2 = 87;
n = 29, n + 1 = 30. n + 2 = 31
Dn+n + 2 +n + 4-87;
n = 29,0 + 2 = 31, n + 4 = 33
Answer:
A
n=27, n+2=29, n+4=31
The correct option is A: n + n + 2 + n + 4 = 87; n -27, n + 2 - 29, n + 4 - 31.
Let's denote the three consecutive odd integers as n, n + 2, and n + 4. The sum of these integers is given as 87.
The correct equation to represent this situation is:
n + (n + 2) + (n + 4) = 87
Now let's solve for n:
3n + 6 = 87
Subtract 6 from both sides:
3n = 81
Divide both sides by 3:
n = 27
n + (n + 2) + (n + 4) = 87
27 + 29 + 31 = 87
The three consecutive odd integers are 27, 29, and 31.
In each of the following pairs, determine the temperature change, and whether the temperature increased or decreased. a. 45° F to –10° F b. 35° C to 80° F c. –19° C to 49° C d. 137° C to 0° C e. 5° C to 19° F f. 68° F to 29° C
A: decreased
B: increased
C: increased
D: decreased
E: decreased
F: increased
Answer:
∵ Change = final value - initial value,
If change > 0, then the value is increased,
if change < 0, then the value is decreased,
a. 45° F to -10° F,
Change = -10° F - 45° F = -55° F < 0° F,
Thus, temperature is decreased,
b. 35° C to 80° F
∵ 35° C = 95° F ( by the formula (°C × 9/5) + 32 = °F )
Change = 80° F - 95° F = -5° F < 0° F,
Thus, temperature is decreased,
c. -19° C to 49° C,
Change = 49° C - (-19)° C = 68° C > 0° C,
Thus, temperature is increased,
d. 137° C to 0° C,
Change = 0° C - 137° C = -137° C < 0° C,
Thus, temperature is decreased,
e. 5° C to 19° F,
∵ 5°C = 41°F
Change = 19° F - 41° F = -22° F < 0° F,
Thus, temperature is decreased,
f. 68° F to 29° C,
∵ 29°C = 84.2°F
Change = 84.2°F - 68° F = 16.2° F > 0° F,
Thus, temperature is increased.
If f(x)=x^2+2x−5 and g(x)=2x+4, what is (f⋅g)(x)
Answer:
Step-by-step explanation:
f(x)=x²+2x−5 and g(x)=2x+4
(f⋅g)(x) = (x²+2x−5)(2x+4) = 2x^3 +4x² -10x +4x²+8x-20
(f⋅g)(x) = 2x^3+8x² -2x -20
For this case we have the following functions:
[tex]f (x) = x ^ 2 + 2x-5\\g (x) = 2x + 4[/tex]
We must find [tex](f * g) (x)[/tex]. By definition we have to:
[tex](f * g) (x) = f (x) * g (x)[/tex]
So:
[tex](f * g) (x) = (x ^ 2 + 2x-5) (2x + 4)[/tex]
Applying distributive property we have:
[tex](f * g) (x) = 2x ^ 3 + 4x ^ 2 + 4x ^ 2 + 8x-10x-20[/tex]
We add similar terms:
[tex](f * g) (x) = 2x ^ 3 + 8x ^ 2-2x-20[/tex]
Answer:
[tex](f * g) (x) = 2x ^ 3 + 8x ^ 2-2x-20[/tex]
The description below represents Function A and the table represents Function B:
Function A
The function is 2 more than 5 times x.
Function B
x y
−1 2
0 5
1 8
Which statement is correct about the slope and intercept of the two functions?
A) Their slopes are equal but y-intercepts are not equal.
B) Their slopes are not equal but y-intercepts are equal.
C) Both slopes and y-intercepts are equal.
D) Neither slopes nor y-intercepts are equal.
Answer:
D is correct
Step-by-step explanation:
Step 1 : Find equation of function A in y = mx + c
2 more than 5 times x
f(x) = 2 + 5x or y = 5x + 2
Step 2 : Identify slope and y-intercept of function A
y = mx + c
y = 2 + 5x
Slope = m = 5
Y-intercept = c = 2
Step 3 : Find the equation of function B in y = mx + c
From my understanding, the number given in the question are coordinates
(-1, 2) , (0, 5) , (1, 8)
Slope = y2-y1/x2-x1
Lets take two coordinates : (-1, 2) , (0, 5)
Slope = 5-2/0-(-1)
Slope = 3/1 = 3
For y-intercept
Lets take (1, 8)
y = mx + c
8 = 3(1) + c
c = 5
The equation is f(x) = 3x + 5 or y = 3x + 5
Step 4 : Lets write both equations with their slope and y-intercept and check with the statements
y = 5x + 2
y = 3x + 5
A) Their slopes are equal but y-intercepts are not equal. Incorrect
B) Their slopes are not equal but y-intercepts are equal. Incorrect
C) Both slopes and y-intercepts are equal. Incorrect
D) Neither slopes nor y-intercepts are equal. Correct
!!
The segments shown below could form a triangle.
Answer:
True
Step-by-step explanation:
Answer:
The answer is false.
Step-by-step explanation:
Given line segments are :
AC = 9
CB = 8
AB = 17
As per the triangle inequality theorem the sum of any 2 sides should be greater than the third side. This should be true to all the three combinations.
[tex]AC+CB>AB[/tex] => [tex]9+8>17[/tex] => [tex]17>17[/tex] (not true)
[tex]AC+AB>CB[/tex] => [tex]9+17>8[/tex] => [tex]26>8[/tex] ( true)
[tex]AB+CB>AC[/tex] => [tex]17+8>9[/tex] => [tex]25>9[/tex] (true)
As we can see only two conditions are fulfilled not the third one, so the triangle cannot be formed.
The answer is false.
I need dire help, I'm almost done with summer school!
A store owner tracks the number of online orders she receives each week since the start of a new advertising campaign and graphs the data.
Use the graph to select the true statement about the function that models the given situation.
A. The function is linear and is growing by equal differences over equal intervals.
B. the function is exponential and is growing by equal percentages over equal intervals .
C. the function is exponential and is growing by equal differences over equal intervals
D. the function is linear and is growing by equal percentages over equal intervals
Answer:
A. The function is linear and is growing by equal differences over equal intervals.
Answer:
A. The function is linear and is growing by equal differences over equal intervals.
Step-by-step explanation:
As you can see in the graph, the function is linear since if draw a line that conects the dots, the graph would turnout linear, and as you can see it is growing 100 orders every 2 weeks, so it is growing by equal differences, over equal intervals.
The volume of a cube depends on the length of its sides. This can be written
in function notation as ws). What is the best interpretation of 3) = 27?
Answer:
Step-by-step explanation:
The given question is that the volume of a cube depends on the length of its sides.This can be written in function notation as v(s). What is the best interpretation of v(3)=27.
Solution:
According to the question the volume of a cube depends on the length of its sides. According to the statement we will apply the formula of volume of a cube.
V(s)=s³
In this question we have given s=3ft.
So, we will put the value of 's' in the formula.
V(s)=s³
V(3)=3³
Multiply 3 three times to get the answer.
V(3)=3*3*3
V(3)=27 ft³
This means that the cube has a volume of 27ft³ with the length of its sides 3ft....
Simplify 3/4(1/2×-12)+4/5
Answer: [tex]\frac{3}{8}x-\frac{41}{5}[/tex] or [tex]\frac{3}{8}x-8\ \frac{1}{5}[/tex]
Step-by-step explanation:
Given the following expression:
[tex]\frac{3}{4}(\frac{1}{2}x-12)+\frac{4}{5}[/tex]
You can follow these steps in order to simplify it:
1. You need to apply Distributive property:
[tex]=\frac{3}{8}x-9+\frac{4}{5}[/tex]
2. And now you must add the like terms. Then:
[tex]=\frac{3}{8}x-\frac{41}{5}[/tex]
Therefore you get the following answer:
[tex]\frac{3}{8}x-\frac{41}{5}[/tex] or [tex]\frac{3}{8}x-8\ \frac{1}{5}[/tex]
F = {(-1, 2), (3, 2), (4, 2), (0, 2)} Is F a function and why/why not?
Yes, no two ordered pairs in this list have the same first coordinate.
No, each set of ordered pairs in this list has the same second coordinate.
Yes, there is more than one ordered pair in this list.
No, there is a limited number of ordered pairs in this list.
Answer:
Yes, no two ordered pairs in this list have the same first coordinate
Step-by-step explanation:
we know that
A function is: a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.
That means that there can be only one ordered pair with the same value of x.
therefore
In this problem F is a function, because all the ordered pairs of the list don't have the same first coordinate
If R(x) = 2x - 5 and g(x) = x2 - 4x - 8, find (f + g(%).
O A (f+9)(x) = x2 - 2x-3
O B. (f+g)(x) = x2 - 2x-13
O C. (*+ g)(x) = 3x2 - 4x- 13
O D. (f+ g)(x) = x2 + 2x-3
C
PREVIOUS
Answer:
OB. (f+g)(x) = x^2-2x-13
Step-by-step explanation:
Given
f(x) = 2x-5
and
g(x) = x^2-4x-8
We have to find (f+g)(x)
So,
(f+g)(x) = f(x) + g(x)
= 2x-5 + (x^2-4x-8)
= 2x-5+x^2-4x-8
= x^2+2x-4x-5-8
=x^2-2x-13
Therefore, Option B is correct ..
Y’all what do i write
Answer:
y = - 0.5x + 4
Step-by-step explanation:
Calculate the slope m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (4, 2) ← 2 points on the line
m = [tex]\frac{2-4}{4-0}[/tex] = [tex]\frac{-2}{4}[/tex] = - 0.5
Note the line crosses the y- axis at (0, 4) ⇒ c = 4
y = - 0.5x + 4 ← equation of boundary line
Answer:
y = -0.5 x + 4.
Step-by-step explanation:
Slope-intercept form of the equation of a line on a Cartesian Plane:
[tex]y = mx + b[/tex].
[tex]m[/tex] is the slope of the line.
If two different points [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex] on the line are given, the slope of the line will equal
[tex]\displaystyle m = \frac{y_2 - y_1}{x_2 - x_1}[/tex].
For this line, the two points are:
[tex](4,2)[/tex], and [tex](0, 4)[/tex].As a result,
[tex]\displaystyle m = \frac{2 - 4}{4 - 0} = - \frac{1}{2}[/tex].
[tex]b[/tex] is the [tex]y[/tex]-coordinate (the second coordinate) of the point at the intersection of the line and the [tex]y[/tex]-axis (the vertical axis.) The [tex]x[/tex]-coordinate (the first coordinate) of that point shall equals [tex]0[/tex]. For this line, the coordinates of the intersection is [tex](0, 4)[/tex]. As a result, [tex]b = 4[/tex].
The slope-intercept form of the equation of this line will thus be
[tex]\displaystyle y = -\frac{1}{2}x + 4[/tex].
What is the first term in this expansion?
1.) 2x^15
2.) 2^15x^15
3.) 10y^15
4.) 10^15y^15
Answer:
2¹⁵x¹⁵ (2nd option)
Step-by-step explanation:
When you expand (2x+10y)¹⁵ you would get:
32,768x¹⁵ + 2,457,600x¹⁴y + 86,016,000x¹³y² + 1,863,680,000x¹²y³+
27,955,200,000x¹¹y⁴+307,507,200,000x¹⁰y⁵ + 307,507,200,000x¹⁰y⁵ + ... so on and so forth.
Since you are not interested in anything else but the first term, observe that the first term is:
32,768x¹⁵
That is equal to: 2¹⁵x¹⁵
What happened there is you need to distribute the exponent to the coefficient of the term as well, so you need to distribute it to 2 as well.
Which fraction is not equivalent to 5/6?
A-15/18
B-20/30
C-10/12
D-30/36
Answer: B. 20/30
Step-by-step explanation: 20/30 simplified to 2/3. Multiply each number by 2 to get 4/6. 4/6 is not the same number as 5/6.
Answer:
B. 20/30
Step-by-step explanation: