How to write x2+y2+2x-12y-9 in Standard form
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need help, thank you!
2x+3y=5x−y
y=0
x=?
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2x -5x = -y - 3y
-3x =-4y
X=4\3 y
Answer:
X=4\3
Step-by-step explanation:
what's the Least common multiple for 2,6,8?
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6= 2*3
8= 2*4
8= 2*2*2
The lcm of these three numbers equals 2*2*2*3*1. Notice how we only multiply 3 sets of 2. This is because 2 is a common factor between all 3 of the numbers.
2*2*2*3*1= 24
Final answer: 24
Find the measure of angle AOE in the diagram below.
Help will be appreciated!
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Answer:
We choose D
Step-by-step explanation:
Given that:
∠BOA = (3x -28) degrees ∠COD = (66 -x) degrees ∠BOC = 90 degreesAs we know that ∠BOA + ∠COD + ∠BOC= 180 degrees because AD is a straight line, so we have:
(3x -28) + (66-x) +90 = 180
<=> 2x = 52
<=> x = 26 degrees.
=> ∠BOA = 3*26 - 28 = 50 degrees
As we can see that, ∠BOA = ∠DOE (The properties of two straight lines intersect)
<=> ∠DOE = 50 degrees
Once again, the AD is a straight line, so we have:
∠DOE + ∠AOE = 180
<=> ∠AOE = 180 - ∠DOE
<=> ∠AOE = 180 - 50 = 130 degrees
We choose D
Solve:
y^6 (y^5)
plz i put eleven idk why se says it's wrong :c
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Five scouts took a white water rafting trip. The total cost of the trip was $721. Each person in the group received a student discount of $6. Write and solve an equation to find out how much each student paid before discount.
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cost per student before discount = 721/5+6
721/5 = 144.20 +6 = 150.20
Answer this please image below
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A histogram never provides information regarding how many for an exact number. A histogram measures frequency by looking at and comparing several ranges.
The last answer includes information that can't be drawn from the histogram.
It ask for a specific number of bottles when the histogram utilizes a range to sort the amount of bottles collected.
Hope this helps!
A baseball was pitched at a speed of 75.2 miles per hour. a tennis ball was served at a speed 1.5 times faster than this. how much faster was the speed of the tennis ball than the speed of the baseball?
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112.8+75.2=188
188-75.2=112.8
Answer:
75.2*1.5=112.8
112.8+75.2=188
188-75.2=112.8
The table shows the number of students in a school who like tacos and/or pizza: Like Tacos Do Not Like Tacos Total Like Pizza 57 13 70 Do Not Like Pizza 12 15 27 Total 69 28 97 What is the relative frequency, by row, of students who like both tacos and pizza? 0.18 0.46 0.81 0.83
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The relative frequency of students who like both tacos and pizza is [tex] \frac{57}{70} [/tex] which as decimal is 0.81
Daisy works at an ice-cream parlor. She is paid $10 per hour for the first 8 hours. She works for x hours in a day and x is greater than 8, the expression giving her net earnings for the day is
A. x(80+1.5)
B. (x-8)1.5
C. 80+15 (x-8)
D. (8)(15)(x-8)
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With that this is the solution step by step:
1) Number of hours worked: x
2) Rate for the first 8 hours: $10 per hour
2) Pay for the first 8 hours = $10 * 8 = $80
3) Number of hours worked over 8 hours = x - 8
4) Rate for the hours worked over 8: 1.5 times $10 per hour = $15 per hour
5) Pay for the hours worked over 8 = $15 (x - 8) = 15 (x - 8)
6) Total pay = 80 + 15 (x - 8)
That is the option C.
Answer: option C. 80 + 15(x - 8)
the answer is option C
factors of 212 like finding a common factor its really hard because the number is so high please please HELP ME!!!!!!!
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Answer:
1.2..17.5
Step-by-step explanation:
i had been singing for the operpopitay
Write the equation of a linear function in point-slope form and slope-intercept form for a line that passes through point A(3,-7) and has an undefined slope.
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order the numbers from least to greatest. 3 29\40, 3 19\20, 3 1\2
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29/40= 0.725
19/20 = 0.95
1/2 = 0.50
least to greatest = 3 1/2 , 3 29/40 , 3 19/20
Use the law of cosines to find the missing third side
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a^2=7.4^2+15.8^2-2(7.4)(15.8)cos54°
a^2=304.4-233.84cos54°
a=√(304.4-233.84cos54°) units
a≈12.92 units (to the nearest hundredth of a unit)
The missing third side BC is approximately 16.93 units. To use the Law of Cosines to find the missing third side (BC), we'll use the formula:
[tex]c^2 = a^2 + b^2 - 2ab * cos(C)[/tex]
where:
c is the side opposite angle C (BC in this case)
a and b are the known sides (AC and AB, respectively)
C is the angle opposite side c (angle BAC in this case)
Given values:
Angle BAC (C) = 54 degrees
AC (a) = 7.4
AB (b) = 15.8
Now, we can plug the values into the formula and solve for BC (c):
[tex]BC^2 = 7.4^2 + 15.8^2 - 2 * 7.4 * 15.8 * cos(54)[/tex]
To find cos(54), we can use a calculator:
[tex]cos(54 degrees) \approx 0.5878[/tex]
Now, we can continue the calculation:
[tex]BC^2 = 54.76 + 249.64 - 2 * 7.4 * 15.8 * 0.5878\\BC^2 = 54.76 + 249.64 - 17.44\\BC^2 = 286.96[/tex]
Now, find the square root of both sides to get the value of BC:
[tex]BC = \sqrt{286.96} \\BC \approx 16.93[/tex]
So, the missing third side BC is approximately 16.93 units.
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The temperature at 9 a.m. is 2 degrees. The temperature rises 3 more degrees by noon. Which expression describes the temperature at noon?
2 + 3
2 + (–3)
–2 + (–3)
–2 + 3
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it starts at 2 degrees which is not a negative number and temperature rises so it isn't a negative number either
so it would be 2+3
An expression is defined as a set of numbers, variables, and mathematical operations. The correct option is A, 2+3.
What is an Expression?In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
Given that the temperature at 9 a.m. is 2 degrees. Further, the temperature rises 3 more degrees by noon.
As two whole numbers are added together, the total quantity or sum of those values is obtained. Therefore, the expression that describes the temperature at noon is 2 + 3.
This is because the temperature is positive and after the temperature rises, the temperature will be added.
Hence, the expression that describes the temperature at noon is 2 + 3.
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Which property is illustrated in this problem?
33 + 0 = 33
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It states that the sum of any number and 0 is that number.
Which of the following volumes represent a perfect cube? CHECK ALL THAT APPLY.
A. 1 in.3
B. 4 in.3
C. 8 in.3
D. 12 in.3
E. 25 in.3
F. 27 in.3
G. 64 in.3
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Answer: A C F G
Step-by-step explanation:
The volumes that represent perfect cubes are A ) 1 inch³, C) 8 inch³, F) 27 inch³ and G) 64 inch³.
What is meant by Perfect Cubes?Perfect cubes are defined as the number which is the result of the multiplication of another number, likely integers, to itself three times.
For example, 8 = 2 × 2 × 2
So 8 is a perfect cube of 2.
Given are a set of volumes in cubes.
A ) 1 inch³ can be written as 1 inch × 1 inch × 1 inch
So it is a perfect cube.
B) 4 inch³ cannot be written as the product of a number thrice.
So not a perfect cube.
C) 8 inch³ = 2 inch × 2 inch × 2 inch
Perfect cube
D) 12 inch³ not a perfect cube.
E) 25 inch³ not a perfect cube
F) 27 inch³ = 3 inch × 3 inch × 3 inch
Perfect cube
G) 64 inch³ = 4 inch × 4 inch × 4 inch
Perfect cube
Hence the perfect cubes are found.
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Eight states in the united states start with the letter M. What fractions of states in simplest form,begins with the leter M?
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fraction of states beginning with M = 8/50 reduces to 4/25 <==
if a polynomial has one root in the form a+√b , it has a second root in the form of a_√b
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That is,
The conjugate of (a + √b) is (a - √b) and vice versa.
To show that the given conjugates come from a polynomial, we should create the polynomial from the given factors.
The first factor is x - (a + √b).
The second factor is x - (a - √b).
The polynomial is
f(x) = [x - (a + √b)]*[x - (a - √b)]
= x² - x(a - √b) - x(a + √b) + (a + √b)(a - √b)
= x² - 2ax + x√b - x√b + a² - b
= x² - 2ax + a² - b
This is a quadratic polynomial, as expected.
If you solve the quadratic equation x² - 2ax + a² - b = 0 with the quadratic formula, it should yield the pair of conjugate radical roots.
x = (1/2) [ 2a +/- √(4a² - 4(a² - b)]
= a +/- (1/2)*√(4b)
= a +/- √b
x = a + √b, or x = a - √b, as expected.
Answer:
a - √b
Step-by-step explanation:
If you solve the quadratic equation x² - 2ax + a² - b = 0 with the quadratic formula, it should yield the pair of conjugate radical roots.x = (1/2) [ 2a +/- √(4a² - 4(a² - b)] = a +/- (1/2)*√(4b) = a +/- √bx = a + √b, or x = a - √b, as expected.
find the area of the circle with diameter of 11mm leaving answer in terms of pi
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r=d/2=11/2=5.5
area=π*30.25=30.25π
Find the height of a triangle with an area (A) of 35 square inches and base (b) of 7 inches. Use the formula for the area of a triangle, A=1/2bh
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2A=bh
h=2A/b, we are given that A=35 in^2 and b=7 in
h=2(35)/7
h=10 in
Height of the triangle is 10 inches
What is Triangle ?A triangle is a polygon with three edges and three vertices.
What is Area?Area is the quantity that expresses the extent of a region on the plane or on a curved surface.
Given,
Area of the triangle = 35 square inches
Base of the triangle = 7 inches
Area of the triangle = [tex]\frac{1}{2}bh[/tex]
where,
b is the base length and h is the height
Substitute the values in the equation
[tex]35=\frac{1}{2}(7)(h)\\ 35=3.5h\\h=\frac{35}{3.5}[/tex]
Height h = 10 inches
Hence, the height of the triangle is 10 inches
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help someone plz
A student needs to make a rectangular cardboard piece that is 12 inches long. The area of the cardboard piece should be between 60 square inches to 300 square inches. The function f(w) relates the area of the cardboard, in square inches, to the width w in inches. Which of the following shows a reasonable domain for f(w)?
A: 2 ≤ w ≤ 5
B: 5 ≤ w ≤ 25
C: 25 ≤ w ≤ 60
D: 60 ≤ w ≤ 300
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area = L x w
60 = 12 x w
w=60/12 = 5
300 = 12 x w
w = 300/12 = 25
so B is the correct answer
Answer:
Option B
[tex]5 \leq w \leq 25[/tex]
Step-by-step explanation:
Let
L------> the long of the cardboard piece
W-----> the width of the cardboard piece
The area of cardboard piece is equal to
[tex]A=L*W[/tex]
In this problem we have
[tex]L=12\ in[/tex]
so
[tex]A=12W[/tex]
[tex]f(W)=12W[/tex]------> equation A
[tex]f(W)\geq 60\ in^{2}[/tex] ------> inequality B
[tex]f(W)\leq 300\ in^{2}[/tex] ------> inequality C
Substitute equation A in the inequality B
[tex]12W\geq 60\ in^{2}[/tex]
[tex]W\geq 60/12[/tex]
[tex]W\geq 5\ in[/tex]
Substitute equation A in the inequality C
[tex]12W\leq 300\ in^{2}[/tex]
[tex]1W\leq 300/12[/tex]
[tex]1W\leq 25\ in[/tex]
The domain for the function f(W) is equal to the interval------> [tex][5,25][/tex]
Please help :) :) :)
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A motorboat
travels 222 km in 6 hours going upstream.
Rate = distance/time = 222/6 = 37 km/hr
----------------------
It travels 390 km going downstream in the same amount of time.
Rate = distance/time = 390/6 = 65 km/hr
---------
What is the rate of the boat in still water and what is the rate of the
current?
Equations:
Upstream: b-c = 37 km/hr
Downstrm: b+c = 65 km/hr
Add and solve
for "b":
(2)b = 102 km/hr
b = 51 km/hr (speed of the boat in still water)
-----
Solve for "c":
b+c = 65
51 + c = 65
c = 14 km/hr (speed of the current)
Ralph sold brownies for $0.27 a piece in order to earn money to buy baseball cards. If the cards cost $0.54 per pack, and if Ralph had no money left over after buying them, what is the least number of brownies he must have sold?
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Where is the answer to the expression 4 − 8 located on a horizontal number line? 4 units to the left of 4
4 units to the right of 4
8 units to the left of 4
8 units to the right of 4
I need the answer asap whoever answers first and gets it right gets brainliest
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A negative number is alwats at the left in a horizontal line.
Let's try to rapresent it.
-4 -3 -2 -1 0 +1 +2 +3 +4
So, you count from +4 to -4
Your answer is "8 units to the left of 4"
The dot plot below shows the hourly rate of some babysitters in a city: A number line is shown from 1 dollar to 7 dollars in increments of 1 dollar for each tick mark. The horizontal axis label is Dollar per hour. There are 2 dots above 4 dollars, 3 dots above 5 dollars, 3 dots above 6 dollars, and 2 dots above 7 dollars. The title of the line plot is Babysitting Rates. Which statement best describes the shape of the data? It is symmetric and has no gaps. It is not symmetric and has a peak at $7.00. It is a cluster from $1.00 to $7.00 and has no gaps. It is a cluster from $1.00 to $7.00 and has a peak at $6.00.
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Answer:
D
Step-by-step explanation:
it did this test
Jennifer can clean her room in 2 hours, while John can clean the same room in 5 hours. How many hours would it take for them to clean the room together?
7
10
seven tenths
ten sevenths
I think the answer is tenth sevenths but im not sure! Please Help ASAP
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Answer: ten sevenths
Step-by-step explanation:
Given: Time taken by Jennifer to clean her room [tex]t_1= 2 \text[ hours}[/tex]
Time taken by John to clean same room [tex]t_2= 5\text[ hours}[/tex]
If they work together to clean the room , then the total time taken by them is given by :-
[tex]\dfrac{1}{t}=\dfrac{1}{t_1}+\dfrac{1}{t_2}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{2}+\dfrac{1}{5}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{5+2}{10}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{7}{10}\\\\\Rightarrow\ t=\dfrac{10}{7}\text{ hours}[/tex]
A peregrine falcon can fly 332 kilometers per hour. How many meters per hour can the falcon fly?
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332 x 1000 = 332,000
A peregrine falcon can fly 332,000 meters per hour. Hope this helps!
~Ash
Determine the range of: f(x) = 13 - 20x - x^2 -3x^4. Also, find the max. And min. Values and state where those values occur
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The range of the graph refers to the coverage of y-values of the curve. From the picture, we could see that it covers most of the negative y-axis. To know at which value, let's find the maxima. There is no minima for this graph as you can see because it extends downwards infinitely at both sides.
To find the maxima, differentitate f(x) with respect to x and equate to 0
f'(x) = 0 = -20-2x-12x^3=0
You can find the roots easily by using a scientific calculator using the mode EQN. For this equation, there are 2 complex root and 1 real root. Thus, x = -1.14. Substitute this to the original equation:
y = 13 - 20(-1.14) - (-1.14)^2 -3(-1.14)^4
y = 29.433
Thus, the maxima is at point (-1.14,29.433). It can't be seen clearly in the graph because of the close intervals.
A woman bought a dress at a discount of 16 2/3. If the woman paid 32.50, what was the original price of the dress
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= 32.50 + 16 2/3
= 32.50 + 50/3
convert to one form of fractions (improper or decimal)
= 49 1/6
= 49.16
--------------------------------------
In case of 16 2/3 % discount of the original price:
price after discount = price before discount - discount
= x - 16 2/3 % of x
= x - 01667x
= 0.833 x
32.5 = 0.833 x
then x = 32.5/0.833 = 39.015 =~ 39
hope that helps
If matrix A has dimensions 3 x 2 and matrix B has dimensions 3 x 2, can matrix A and matrix B be multiplied?
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Matrix B has 3 rows, 2 columns
The number of columns in matrix A (which is 2) does not match up with the number of rows in matrix B (which is 3).
So the matrix multiplication A*B is undefined. We cannot multiply the matrices.
Answer:
we can not multiply matrix A and B.
Step-by-step explanation:
We have been given that
dimension of matrix A = 3 x 2
dimension of matrix B = 3 x 2
Rule of multiplying two matrices:
Two matrix can be multiplied if the column of first matrix is equal to the row of second matrix.
column of first matrix = row of second matrix
Here, we have
Column of first matrix A = 2
Row of second matrix b = 3
Since,, column of matrix A ≠ Row of matrix B
Hence, we can not multiply matrix A and B.