Answer:
B
Step-by-step explanation:
its because the intersection of two lines is (4,2)
Answer:
B
Step-by-step explanation:
The solution to a system of equations given graphically is at the point of intersection of the 2 lines.
Point of intersection = (4, 2 ) ← solution
Please answer is question in two minutes
Answer:
C: 38 units
hope this helps!!
Expand [x+2/x-3] [x-2/x-3]
Answer:
[tex]\dfrac{x^2-4}{x^2-6x+9}[/tex]
Step-by-step explanation:
We assume you want to expand ...
[tex]\dfrac{x+2}{x-3}\cdot\dfrac{x-2}{x-3}=\dfrac{(x+2)(x-2)}{(x-3)^2}=\boxed{\dfrac{x^2-4}{x^2-6x+9}}[/tex]
_____
In each case, the product of the factors is ...
(x +a)(x +b) = x² +(a+b)x +ab
For the numerator, you have (a, b) = (2, -2).
For the denominator, you have (a, b) = (-3, -3).
Answer:
[tex]= \frac{ {x}^{2} - 4 }{ {x }^{2}-6x+9 } \\ [/tex]
Step-by-step explanation:
[tex] \frac{x + 2}{x - 3} \times \frac{x - 2}{x - 3} \\ \frac{(x + 2)(x - 2)}{(x - 3)(x - 3)} \\ \frac{x(x - 2) + 2(x - 2)}{ {(x - 3)}^{2} } \\ \frac{ {x}^{2} - 2x + 2x - 4 }{ {x}^{2} - 6x+9} \\ = \frac{ {x}^{2} - 4 }{ {x }^{2} -6x+9 } [/tex]
Given the following logarithmic equation, think about how you would solve each one. Now,
describe those processes using at least 3 to 4 sentences. Then solve, showing your work.
Equation 1: log2 + logx = log3
Answer: x = 3/2
Step-by-step explanation:
log (2) + log (x) = log (3) Given
log(2x) = log(3) Condensing log rules
2x = 3 Cancellation log rule
[tex]x=\dfrac{3}{2}[/tex] Division Property
Please help me with this question!!!!!! PLEASE.
Answer:
B. -9, 7
Step-by-step explanation:
For the rational expression to be undefined the denominator has to equal 0.
x² + 2x - 63 = 0
Factor left side.
(x - 7)(x + 9) = 0
Set factors equal to 0.
x - 7 = 0
x = 7
x + 9 = 0
x = -9
x = -9 or x = 7
Answer:
B
Step-by-step explanation:
A rational expression is undefined when the denominator of the expression equals 0 (this is because anything over 0 is undefined). In other words, to find the values for which the given expression is undefined, we simply have to find the zeros of the denominator. We can ignore the numerator. Thus, let:
[tex]0=x^2+2x-63[/tex]
This is now a quadratic. Solve for the quadratic. I will factor but you can do whatever you like (complete the square, quadratic formula, etc.).
We notice that two factors that multiply to -63 and also add to +2 is 9 and -7. Thus:
[tex]0=(x+9)(x-7)[/tex]
[tex]x+9=0 ; x=-9[/tex]
[tex]x-7=0; x=7[/tex]
The zeros are -9 and 7.
The denominator will equal 0 at these values, and the expression will be undefined.
Two vectors are said to be parallel if they point in the same direction or if they point in opposite directions.
Part A
Are the vectors v1 = < V3, 1 >and va = <-13, -1 >parallel? Show your work and explain
Part B
Are the vectors Ui =< 2, 3 >and u2 =-3,-2 > parallel? Show your work and explain.
Answer:
When two vectors are parallel, it's because the angles of inclination are equivalent. They are defined by
[tex]\theta = tan^{-1}(\frac{y}{x} )[/tex]
So, we just need to find the angle for each vector and see if they are equivalent.
We have vectors [tex](3,1)[/tex] and [tex](-13,-1)[/tex]. You already can deduce that these vectors are not parallel, because, their divisions are not equivalent.
[tex]\frac{1}{3} \neq \frac{-1}{-13}[/tex]
Which will give different angles in the end.
Let's try the other pair of vectors [tex](2,3)[/tex] and [tex](-3.-2)[/tex]. Their division would be
[tex]\frac{3}{2} \neq \frac{-2}{-3}\\ 1.5 \neq 0.67[/tex]
As you can observe, their divisions are not equivalent, which means their tangents are not equivalent.
Therefore, those vectors are not parallel, because they don't have equivalent angles of inclination, not matter if they are pointing to the same or different direction.
what's the product of 9 (-8)
Answer:
-72
Step-by-step explanation:
I googled it.
Answer:
-72
Step-by-step explanation:
You take the 9, multiply by the -8, and boom. You get -72.
And when you multiply two opposite signs together, it equals to a negative number.
Boom bam boom you became a bit smarter
Suppose that p partners equally share the profits from a sale of $3,600. Which algebraic expression represents this situation?
Given : p partners equally share the profits from a sale of $3,600
To find : Which algebraic expression represents this situation
Solution:
Number of Partners = p
Total Profit = $ 3600
Profit of Each Partner = Total Profit / number of Partners
=> Profit of Each Partner = 3600 / p
Hence is algebraic expression that represent the Share of each partner
Answer:
D
Step-by-step explanation:
100% on quiz
What is the area of the trapezoid?
30 square units
60 square units
90 square units
120 square units
Answer:
not d
Step-by-step explanation:
i tried it hehhe
Answer: 60 square units
Step-by-step explanation:
Think of 5 positive that have a mode of 4, a median of 8, a mean of 9 and a range of 12
There are 200 people in a cinema. 25% of the people are men. 1⁄5 of the people are women. The rest of the people are children. Work out how many children are in the cinema.
Answer:
110
Step-by-step explanation:
There are 200 people in a cinema- This is our total amount.
25 % of the people are men.
.25 times 200= 50
There are 50 men.
1/5 (20%) of the people are women.
.2 times 200 = 40
There are 40 women.
50+40 = 90
There are 90 adults in the cinema.
If there are 200 total people in the cinema, and 90 of them are adult, then 110 of them are children.
The percentage is 55%.
The simplified fraction is 11/20.
The decimal is .55
Classify each sequence as arithmetic, geometric or neither
Answer:
Geometric sequence = ⁵/9, ⁵/3, 5, 15, 45. . .
Arithmetic sequence = 16, 11, 6, 1, -4 . . .
Step-by-step explanation:
A geometric sequence is a sequence of numbers, in which every number in the sequence after the first term is multiplied by a common ratio, which gives us the next term. The common ratio is the ratio of a term to the term before it.
On the other hand, an arithmetic sequence is a sequence of number have a common difference between each consecutive terms. This common difference is gotten by subtracting a term from the term before it.
Now let's examine each sequence given:
==>16, 11, 6, 1, -4 . . .
11 - 16 = -5
6 - 11 = -5
1 - 6 = -5
-4 - 1 = -5
This is an arithmetic sequence. The commons difference "-5" is the same
==>⁵/9, ⁵/3, 5, 15, 45. . .
⁵/3 ÷ ⁵/9 = ⁵/3 × ⁹/5 = ⁹/3 = 3
5 ÷ ⁵/3 = ⁵ × ⅗ = 3
15 ÷ 5 = 3
45 ÷ 15 = 3
The common ratio "3" is the same. This is a geometric sequence.
[tex]4\sqrt\frac{132}{143} ^ -2}[/tex]
Answer:
Step-by-step explanation:
Hi
[tex][ 4\sqrt\dfrac{132}{143} ]^ {-2}}=[\dfrac{132}{143}]^{-\dfrac{2}{4}}=\sqrt{\dfrac{143}{132}}\\\\=\sqrt{\dfrac{11*13}{11*12}}=\sqrt{\dfrac{13}{12}}[/tex]
do not hesitate if you have any question
Use long division to find the quotient below.
(30x3 + 4x2 - 150) = (3x - 5)
A. 10x2 - 24x + 30
B. 10x2 + 24x+ 30
c. 10x2 + 18x+ 30
D. 10x2 - 18x+ 30
PLZZ PLS PLZZZ HELP‼️
Answer:
Hello!
`~~~~~~~~~~~~~~~~~~~~~
Your answer would be (C) 10x2 + 18x+ 30
~~~~~~~~~~~~~~~~~~~~~~
Hope this helped you!
P . S I would've put the explaintion but it's to long.
Find the measure of the arc.
с
A
146° E
B
mEF = [ ? 1°
Explanation:
Let point G be the center of both circles. Angle EGF is shown to be 146 degrees. This is a central angle of the orange circle that subtends, or cuts off, minor arc EF. This is the shortest distance along the edge of the orange circle. The measure of the central angle is exactly equal to the measure of the arc. This is simply by definition. Minor arc EF is 146 degrees as it is a portion of the entire distance around the orange circle. The fractional portion is 146/360 = 73/180.
What is the length Y in this picture ?
Answer:
5
Step-by-step explanation:
The triangle pictured is a 45-45-90 triangle, meaning both legs are the same length, 5.
A School of Public Health completed a study on alcohol consumption on college campuses. They concluded that 20.1?% of women attending? all-women colleges abstained from? alcohol, compared to 17.1?% of women attending coeducational colleges. Approximately 5.2?% of women college students attend? all-women schools. Complete parts? (a) and? (b) below.
Complete question:
A School of Public Health completed a study on alcohol consumption on college campuses. They concluded that 20.1?% of women attending? all-women colleges abstained from? alcohol, compared to 17.1?% of women attending coeducational colleges. Approximately 5.2?% of women college students attend? all-women schools. Complete parts? (a) and? (b) below.
a) what is the probability that a randomly selected female student abstains from alcohol
b) If a randomly selected female student abstains from alcohol, what is the probability she attends a coeducational college?
Answer:
a) 0.173
b) 0.94
Step-by-step explanation:
Given:
Probability of women attending all women colleges, probabilty of abstained from alcohol P(Ab|AW) = 0.201
Probability of women attending coed colleges, probabilty of abstained from alcohol P(Ab|CE) =0.171
Let probability of women attending all women college, P(AW) =0.052
Let probability of women attending coed, P(CE) = 1 - 0.052 =0.948
a) To find the probability that a randomly selected female student abstains from alcohol, use the formula below:
P(Ab) =P(Ab|AW)*P(AW)+P(Ab|CE)*P(CE)
=(0.201 * 0.052) + (0.171 * 0.948) = 0.17256
Probability that a randomly selected female student abstains from alcohol is 0.17256 ≈ 0.173
b) If randomly selected female student abstains from alcohol, probability she attends a coeducational college. Use the formula below:
P(CE|Ab) =P(Ab|CE)*P(CE)/P(Ab) =
[tex] = 0.171 * \frac{0.948}{.173} [/tex] [tex] =0.9394 [/tex]
≈ 0.94
PLEASE ANSWER!!! Which of the following statements are true?
Answer:
the correct answer is D
Step-by-step explanation:
The correct answers are A, B, and D
Select the correct answer. Wayne plays multiple instruments in a rock band. He also composes the songs. He takes 36 weeks to write the songs for an album of 12 songs. If you assume he takes an equal amount of time to compose each song and graph this relationship with the number of weeks on the x-axis and the number of songs on the y-axis, what is Wayne's unit rate for composing a song?
Answer:
3 weeks for one song
Step-by-step explanation:
The function would be y = 3x + b
Answer:
it is 1/3 of a song per week for all you people that cant do math
Step-by-step explanation:
What is the slope of the line shown below?
We can use the points (-4, 3) and (3, 1) to solve.
Slope formula: y2-y1/x2-x1
1-3/3-(-4)
-2/7
Therefore, the answer is C
Best of Luck!
Answer:
-2/7
Step-by-step explanation:
To find the slope we use the formula
( -4,3) and ( 3,1) are two points on the line
m = ( y2-y1)/(x2-x1)
= ( 1-3)/( 3 - -4)
( 1-3) /(3+4)
-2/7
An account is opened with $7,595.96 with a rate of increase of 2% per year. After 1 year, the bank account contains $7,746.90. Assuming no deposits or withdrawals are made, which equation can be used to find y, the amount of money in the account after x years
Answer:
y = 7,595.96(1.02)x
Step-by-step explanation:
y = 7,595.96(1.02)x
a normal linear equation is basically y = x + b
in this case,
y = amount of money in the bank accountx = number of yearsb is not required because there are no new deposits or withdrawals from the accountSince the accounts earns 2% interest per year, then you need to multiply the original amount by 1.02. As more years pass, the account will increase by 1.02, so the account increases by 1.02x. Since the original amount is $7,595.96, that will be our starting point.
Answer:
C y = 7,595.96(1.02)x
Step-by-step explanation:
Me remaining days
(7) Jill and Kelly work as consultants and get paid per project. Jill gets paid a project fee of
$25 plus $10 per hour. Which expression shows how much Jill will get paid after h hours?
a. 25 + 10h
b. 25h 4 10
c. 25 + 10 + h
d. 25h + 10h
Derek applies grass seed to 2/5 acre in 3/4 hour. How many acrers can Derek cover per hour. (Please show work)
Answer:
8/15 acres per hour
Step-by-step explanation:
To find acres per hour, divide acres by hours:
(2/5 ac)/(3/4 h) = (2/5)(4/3) ac/h = 8/15 ac/h
Derek can cover 8/15 acres per hour.
Consider the Graph Choose True or False for each statement.
Answer:
True, False, False, True
Answer:
True, False, False, True.
Step-by-step explanation:
Caroline, Colin & Sarah share some money in the ratio 1 : 9 : 1.
In total, Caroline and Sarah receive £28.
How much does Colin get?
Answer:
Colin got £126
Step-by-step explanation:
Here we want to know how much Colin got from the sharing.
We can collapse the ratio to mean;
Colin : Caroline + Sarah
= 9:1 + 1 = 9:2
So total ratio is 9 + 2 = 11
If Caroline and Sarah got £28 we need to find the total money shared
Let the total money shared be £x
Thus;
2/11 * x = 28
2x = 11 * 28
x = (11 * 28)/2
x = 11 * 14 = £154
So the amount of money Colin got would be;
£154 - £28 = £126
Helppp!!!! please!!!
Answer:
B. 24700
Step-by-step explanation:
Answer:
b. 24700 cm³
Step-by-step explanation:
[tex]\frac{lwh}{3} \\\\65*30*38/3 = 24700 cm^3[/tex]
Hope this helps! :)
the total surface area of a cube is 294cm2. work out the volume of the cube.
Answer: 343 cm³
Step-by-step explanation:
The surface area of a cube is 6s^2, where s is the side length of a square. Thus, first do 294/6 to get 49. Then take the square root of 49 to get that each side of the cube is 7. The volume of a cube is s^2, so simply do 7*7*7 to get that the volume of the cube is 343cm^3
Hope it helps <3
Answer:
V =343 cm^3
Step-by-step explanation:
The surface area of a cube is given by
SA = 6s^2 where s is the side length
294 = 6s^2
Divide by 6
294 / 6 = s^2
49 = s^2
Take the square root of each side
sqrt(49) = sqrt(s^2)
7 =s
The volume of a cube is
V = s^3
V = 7^3
V =343 cm^3
graph e(x) = √x − 10 .
Answer:
I Believe if so, this is your answer
Step-by-step explanation:
y = e ( x )
OR
y = √ x − 10
Help!!!! please!!!!!
Answer:
60 or 70
Step-by-step explanation:
Answer:
The shape is a trapezium; so use the formula for solving area of a trapezium to solve it. Which is
1/2(a+b)×h
=1/2(10+6)×7
=1/2 × 16 × 7
= 8×7
=56
If a circle has an area of 12π cm² and a diameter of line AB, what is the length of arc AB?
Answer:
2√3π cm
Step-by-step explanation:
area of circle: πr²
area = A²
A =√ 12π
therefore, A = 2 √ 3π
Answer:
answer: 2* pi * sqrt(3)
Step-by-step explanation:
Area = pi * r^2
12*pi = pi * r^2
sqrt(12) = r
r = 2*sqrt(3)
The diameter of the circle is twice as larger.
d = 2(2sqrt(3))
d = 4 sqrt(3)
the circumference of a circle is d*pi
1/2 the circumference is pi*d/2
The arc length = 1/2 the circumference
The arc length = pi*d/2 = pi * 4*sqrt(3)/2 = 2* pi * sqrt(3)
The price of a pair of headphones is $39.99 before tax. Dalton bought the headphones for 30% off. He then paid 6% sales tax on the discounted price. Part A: How much did Dalton pay in sales tax? Show all work and steps in your solution. (5 points) Part B: What is the total amount that Dalton paid for the headphones? Show all work and steps in your solution. (5 points) DO NOT LOOK THIS UP PLS
Answer:
part A 1.68
part B 29.67
Step-by-step explanation:
First you multiply $39.99 dollars and 0.30 = $11.9970 you round this to $12.00
After you apply the discount $39.99 - $12.00 = 27.99
Next you must multiply 27.99*0.06 =1.6794 and round to 1.68 to get tax
Last you add $27.99 and 1.68 to get a total of $29.67 for the headphones
Plz give brainliest i didnt look it up.
The sales tax amount is $1.68, and the total amount paid is $29.66
The price is given as:
[tex]Price = \$39.99[/tex]
The sales tax is given as:
[tex]Sales\ tax = 6\%[/tex]
The discount is given as:
[tex]Discount = 30\%[/tex]
(a) The sales tax paid
Start by calculating the discounted price, using:
[tex]Discount = Price \times (1 - 30\%)[/tex]
So, we have:
[tex]Discount = \$39.99 \times (1 - 30\%)[/tex]
[tex]Discount = \$39.99 \times 0.70[/tex]
[tex]Discount = \$27.993[/tex]
The sales tax is then calculated using:
[tex]Sales\ tax = \$27.993 \times 6\%[/tex]
[tex]Sales\ tax = \$1.67958[/tex]
Approximate
[tex]Sales\ tax = \$1.68[/tex]
(b) The total amount paid
This is calculated as:
[tex]Total = Discount + Sales\ Tax[/tex]
[tex]Total = \$27.99 +\$ 1.67[/tex]
[tex]Total = \$29.66[/tex]
Hence, the sales tax amount is $1.68, and the total amount paid is $29.66
Read more about discounts and sales tax at:
https://brainly.com/question/13961909