Answer: First option, Second option, Third option and Fourth option.
Step-by-step explanation:
You need to substitute each point into the inequality:
1) Point (-2,-5):
[tex]y > 2x - 4\\\\-5 > 2(-2) - 4\\\\-5>-8\ (This\ is\ true)[/tex]
2) Point (0,4):
[tex]y > 2x - 4\\\\4 > 2(0) - 4\\\\4>-4\ (This\ is\ true)[/tex]
3) Point (1,1):
[tex]y > 2x - 4\\\\1 > 2(1) - 4\\\\1>-2\ (This\ is\ true)[/tex]
4) Point (3,5):
[tex]y > 2x - 4\\\\5 > 2(3) - 4\\\\5>2\ (This\ is\ true)[/tex]
5) Point (5,5):
[tex]y > 2x - 4\\\\5 > 2(5) - 4\\\\5>6\ (This\ is\ not\ true)[/tex]
Answer:1st 3rd and 4th
Step-by-step explanation:
Hope I helped
So Reflections
If P= (3,4), Find: Ry=5 (P)
Answer:
The reflected point is (3,6)
Step-by-step explanation:
we know that
The reflection Ry = 5, means a reflection is across the line y= 5
we have
the point P(3,4)
Since the point P has y-coordinate 4, its distance to the line y= 5 is equal to 1 units (P is located 1 units down the line y=5).
therefore
The reflection of the y-coordinate will be 1 units above the line y=5, which is equal to
5+1=6
Hence
the y-coordinate of the image is 6.
The reflected point is (3,6)
To reflect a point about the y-axis, negate the x-coordinate while keeping the y-coordinate the same.
Explanation:In this question, you are given the point P(3,4) and asked to find Ry=5(P). The notation Ry=5(P) represents the reflection of point P about the y-axis. To reflect a point about the y-axis, you need to replace the x-coordinate with its opposite (negate it) while keeping the y-coordinate the same.
So, P(3,4) reflected about the y-axis becomes (-3,4). The x-coordinate changes from 3 to -3, but the y-coordinate remains the same at 4.
Therefore, Ry=5(P) is (-3,4).
Mustafa is flying his kite, and Ana is watching. From Ana's perspectively there is an angle of 109 degree between Mustafa and his kite. From Mustafa's perspective, there is an angle of 47 degree between Ana and the kite. If the length of the string between Mustafa and the kite is 46 m, how far is Ana from the kite? Do not round during your calculations. Round your final answer to the nearest meter.
Answer:
[tex]36\ m[/tex]
Step-by-step explanation:
Let
x -----> the distance of Ana from the kite
we know that
Applying the law of sines
[tex]\frac{46}{sin(109\°)}=\frac{x}{sin(47\°)}\\ \\x=(46)sin(47\°)/sin(109\°)\\ \\x=35.58\ m[/tex]
round to the nearest meter
[tex]35.58=36\ m[/tex]
What is the common ratio for the geometric sequence?
4/3, 4, 12, 36,...
Answer:
r = 3
Step-by-step explanation:
The common ratio r of a geometric sequence is the ratio between consecutive terms, that is
r = [tex]\frac{4}{\frac{4}{3} }[/tex] = 3
r = 12 ÷ 4 = 3
r = 36 ÷ 12 = 3
Which equation has the steepest graph?anyone need some help
Answer:
Yhe equation that jas the steepest gradient is D
Step-by-step explanation:
look at the numbers infront of the 'x' without looking at the negative sign. The
larger the number the steeper the gradient. Negative gradient only means that it is a downward slope
Answer:
Step-by-step explanation:
D
x-y=4 x+y=8 the x-coordnate of the solution to the system shows
Answer:
x = 6
Step-by-step explanation:
Given the 2 equations
x - y = 4 → (1)
x + y = 8 → (2)
Adding the 2 equations term by term eliminates the y- term
(x + x) + (- y + y) = (4 + 8), that is
2x = 12 ( divide both sides by 2 )
x = 6
Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?
Answer:
2 whole 1/4
Step-by-step explanation:
When forming a perfect square trinomial you need to "complete the square".
All of the steps to completing the square when solving an equation:
1. The leading coefficient must be 1.
2. Divide b by 2.
3. Square (b/2)
4. Add (b/2)^2 to both sides to keep the polynomial balanced.
5. You can now write the perfect square trinomial and solve.
x^2 - 3x
-3/2
(-3/2)^2 = 9/4 = 2 1/4
Answer:
The answer is 2 1/4
Step-by-step explanation:
You are welcome.
x^2=12x-40 solve this equation using the quadratic formula
Answer:
Step-by-step explanation:
X²=12x-40
X²-12x+40=0
a=1 and b= -12 and c = 40
delta = b² - 4ac
delta = (-12)² - 4(1)(40) = 144 - 160 = - 16 = (4i)² ....i² = -1
x1= (12-4i)/2 =6-2i
x1= (12+4i)/2 =6+2i
Answer:
Step-by-step explanation:
x^2 = 12 x-40
x² - 12x + 40 = 0
a = 1; b = -12; c = 40
4ac - b² = 4*1*40 - (-12)² = 160 - 144 = 16
x = -b ± √4ac-b² i / 2a
= -(-12) ± √ 16 i
2 * 1
= (12 ± 4 i )/ 2
= 2( 6 ± 2i)
2
= 6 ± 2i
The price of product of a company increases by
10% and the turnover increases by 10%. What is
the change in quantity sold?
a. 10%
b. 8%
C. 20%
d. no change
Answer:
d.no change
Step-by-step explanation:
There will be no change in the quantity of products sold.
Option D will be the correct answer.
How do find out the change in quantity sold?Given that the turnover is increased by 10 % when the price increases by 10 %.
Let us consider that the price of the product is x and the quantity sold is n numbers. Then the turnover t will be given as,
[tex]t = x\times n[/tex]
An increase in the price of the product is 10 % results in an increase in turnover by 10%. Hence the increased price is,
[tex]x' = x+\dfrac{10}{100}\times x[/tex]
[tex]x' = 1.1 x[/tex]
Hence new turnover will be,
[tex]t'= x\times n + \dfrac {10}{100} \times x\times n[/tex]
[tex]t'= 1.1\times x\times n[/tex]
The quantity sold can be calculated by dividing the new turnover by the increased price of the product. Thus, the new quantity of the product will be,
[tex]n' = \dfrac {t'}{x'}[/tex]
[tex]n' = \dfrac {1.1\times x\times n}{1.1\times x}[/tex]
[tex]n' =n[/tex]
We can see that the quantity of the product sold remains unchanged.
Hence option D will be the correct answer, there will be no change in the quantity of product sold.
To know more about the price and quantity, follow the link given below.
https://brainly.com/question/13953486.
Find the measure of angleC in the following triangle
Answer:
C = 58.88 degrees
Step-by-step explanation:
We can use the law of cosines to find the missing angle measurement
c^2 = a^2 +b^2 -2ab cosC
Rearranging and solving for cos C
2ab Cos C = a^2 +b^2 - c^2
Divide by 2ab
cos(C) = a^2 + b^2 − c^2
------------------------
2ab
Substituting what we know a = 31 b = 21 c = 27
31^2 + 21^2 - 27^2
cos C = -----------------------------
2(31)(21)
cos C = .516897081
Take the inverse cos on each side
cos^-1 cos C = cos ^-1 (.516897081)
C = 58.88 degrees
what is the midpoint of a line segment joining the points (5,-4)(-13,12)
To find the midpoint, add the 2 x values together and divide by 2, then add the 2 Y values together and divide by 2.
(5-13)/2, (-4+12)/2
-8/2 , 8/2
-4,4
The answer is (-4,4)
What is the product of 5x4
Answer:
20
Step-by-step explanation:
5+5+5+5=20
there are 9 books eack book 3/4 of a pound which is the total weight of the books?
Total Weight = Weight of the book + Weight of the CD + Weight of the box
Total Weight = 1 1/4 pound + 1/5 pound + 3/10 pound
Total Weight = 5/4 + 1/5 + 3/10
To add these fractions, you need to put them over a common denominator. To do that, find the least common multiple of 4, 5, and 10. Below is a table of the multiples. The least multiple they have in common is 20, shown in orange. So use 20 as your least common denominator.
1 2 3 4 5 6 7
4 x 4 8 12 16 20 24 ...
5 x 5 10 15 20 25 30 ...
10 x 10 20 30 40 50 60 ...
Can you finish it from here?
Please help me!!! 6 points! Find the vertical shift
Answer:
0.009 units in the positive y direction.
Step-by-step explanation:
Vertical shift is simply the value of the constant.
In this case, if you expand the formula by multiplying 0.9 into the parentheses,
y = 0.9 sin [(π/3) - x] + (0.9)(0.01)
y = 0.9 sin [(π/3) - x] + 0.009
Here the value of the constant is 0.009 and it is positive, hence the vertical shift is 0.009 units in the positive y direction.
identify one charcteristic of exponential growth
Answer:
Exponential growth is called growth because its curve increases really fast, so that's the main characteristic of exponential growth. I'm attaching an example of a function with exponential growth, which is the change of population size over time.
What is the angle of depression from B to C?
Answer:
That is < 3.
Step-by-step explanation:
It is the angle between the (dotted) horizontal from B and the line going B and C.
The measures of the legs of a right triangle are 15m and 20m . What is the length of the hypotenuse
Answer:
25 m
Step-by-step explanation:
Use the Pythagorean Theorem.
a^2+b^2=c^2
Or just know you are finding the hypotenuse and use c=sqrt(a^2+b^2)
If you were finding a leg use a=sqrt(c^2-b^2).
So sqrt(15^2+20^2)
=sqrt(225+400)
=sqrt(625)
=25
PLEEEASEEEEEEEEE HELPPPPPP!
The coordinates of the point A before dilation is (-12,-12)
What is the geometric mean of 5 and 10?
Answer:
5[tex]\sqrt{2}[/tex]
Step-by-step explanation:
The geometric mean of 2 numbers a and b is
[tex]\sqrt{ab}[/tex]
Hence
The geometric mean of 5 and 10 is
[tex]\sqrt{5(10)}[/tex]
= [tex]\sqrt{50}[/tex]
= [tex]\sqrt{25(2)}[/tex] = [tex]\sqrt{25}[/tex] × [tex]\sqrt{2}[/tex] = 5[tex]\sqrt{2}[/tex]
Answer:
7.071
Step-by-step explanation:
To find geometric mean of two numbers given , you multiply numbers then find the square root of the result.
For this question we have the numbers given as 5 and 10. So multiply 5 by 10 then get the square root of the answer.
[tex]=5*10=50\\\\\\\\\sqrt{50} =7.071[/tex]
The answer is need is for number 8
Answer: I make 15 dollars every week at my job
Step-by-step explanation: your x is likely representing a time like weeks and your y is most likely going to be the amount of something like money. so if x increases by one every time and y increases by 15 every time your scenario could be i make 15 dollars every week at my job.
100 Points again please answer
Answer:
843.67
Step-by-step explanation:
896 is the original price
A 12% discount will be applied so what is 12% of 896 =.12(896)=107.52
So we started with 896 and we are taking off 107.52=896-107.52=788.48
So the price after the discount is 788.48.
Now to apply the tax which is 7%=.07 so we need to find 7% of 788.48=.07(788.48)=55.19 (This is the tax dollar amount to be added to the price before tax).
So Sara is paying 788.48+55.19=843.67
Answer:
843.67
Step-by-step explanation:
Take the original price and find the discount
896 * 12 %
896 * .12
107.52
The new price is the original price minus the discount
896-107.52
788.48
Now we need to find the tax on the sale price
788.48 * 7%
788.48 *(.07)
55.19
Add the sale price and the tax to find the total price
788.48 +55.19
843.67
Find the length of AC if BC is tangent to circle A.
A) 25
B) 5
C) 7
D) √7
E) None of the above
Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial
ANSWER
[tex]p = - 3[/tex]
The completely factored form is
[tex](x + 1)(x - 1)( 3x - 1)[/tex]
EXPLANATION
The given polynomial expression is
[tex]3 {x}^{3} - {x}^{2} + px + 1[/tex]
Let
[tex]f(x) = 3 {x}^{3} - {x}^{2} + px + 1[/tex]
According to the Remainder Theorem, if f(x) is exactly divisible by x-1, then the remainder is zero.
This implies that:
[tex]f(1) = 0[/tex]
[tex]3 {(1)}^{3} - {(1)}^{2} + p(1)+ 1 = 0[/tex]
[tex]3 - 1 + p + 1 = 0[/tex]
[tex]3 + p = 0[/tex]
[tex]p = - 3[/tex]
When we substitute the value of p back into the function, f(x) we get:
[tex]f(x) = 3 {x}^{3} - {x}^{2} - 3x + 1[/tex]
We now perform long division as shown in the attachment.
We can factor the function to get:
[tex]f(x) =(x - 1)( 3 {x}^{2} + 2x - 1)[/tex]
We now split the middle term of the quadratic term and factor it completely to obtain:
[tex]f(x) =(x - 1)( 3 {x}^{2} + 3x - x - 1)[/tex]
[tex]f(x) =(x - 1)( 3x(x + 1) - 1(x + 1))[/tex]
[tex]f(x) =(x - 1)( 3x - 1)(x + 1) [/tex]
[tex]f(x) =(x + 1)(x - 1)( 3x - 1)[/tex]
a wall is 8 feet tall and 36 feet wide. tom wants to cover it with white paint that costs 2 dollars per ounce. if each ounce of paint can cover approximately 72 square inches of area, how much would it cost to buy enough paint to cover the entire wall
Answer:
1152
Step-by-step explanation:
First we need to find the area of the wall in square inches
8 ft = 8*12 = 96 inch tall
36 ft = 36 * 12 = 432 inches wide
The area = 96 * 432 =41472 in^2
Each ounce of paint cover 72 in^2 so divide by 72
41472/72 =576
We need 576 ounces to cover the wall
At 2 dollars per ounces
576*2 =1152 dollars to paint the wall
40 points with explanation please
Answer:
a = 80°
Step-by-step explanation:
Since PS and QR are parallel lines, then
a = 80° ( alternate angles )
Answer:
a = 80°
Step-by-step explanation:
Since PS and QR are parallel lines, then
a = 80° ( alternate angles )
Which of the following is the equation of a line in a slope intercept form for a line without 1/4 and y intercept at (0,-1)
Answer:
[tex]\large\boxed{y=\dfrac{1}{4}x-1}[/tex]
Step-by-step explanation:
[tex]\text{The slope-intercept form of an equation of a line:}\\\\y=mx+b\\\\m-slope\\b-y-intercept\to(0,\ b)\\\\\text{We have the slope}\ m=\dfrac{1}{4}\ \text{and the y-intercept}\ (0,\ -1)\to b=-1.\\\\\text{Substitute:}\\\\y=\dfrac{1}{4}x-1[/tex]
Can anyone help me? Which function is graphed on the right?
Y=2^x+3-2
Y=2^x-3+2
Y=2^x-2+3
Y=2^x-2-3
[tex]y=2^{\left(x-2\right)}+3[/tex]
Step-by-step explanation:To solve this problem, we need to start with the parent function of the exponential function, which is [tex]f(x)=a^x[/tex], where [tex]a[/tex] is the base. In our problem, [tex]a=2[/tex], so our parent function here is [tex]y=2^x[/tex]. Then, we need to perform some transformations to our parent function. Thus:
1. Vertical shrink:
A vertical shrink is a nonrigid transformation because the graph of the function get a distortion in the shape, so this transformation is as follows:
[tex]g(x)=cf(x)[/tex]
where [tex]c[/tex] in this problem equals 0.25 because:
[tex]y=0.25(2^x) \\ \\ y=\frac{1}{4}(2^x) \\ \\ y=\frac{2^x}{2^2} \\ \\ y=2^{(x-2)}[/tex]
2. Vertical shift:
The graph of the function [tex]y=2^{(x-2)}[/tex] get a vertical shift given by:
[tex]y=2^{(x-2)}+3[/tex]
So the graph is shifted 3 units up. So the result is the graph shown above.
Answer:
The answer is C
Step-by-step explanation:
Solve for y in terms of x
27-4=x
Answer: 23 = x
Step-by-step explanation: The first, and in this case, only step, is the simplify the equation. We do not have to get the variable on one side since it already is. 27-4 = 23, so our answer will be 23.
Cook-n-Serve carries oven mitts that have a selling price of $13.80 a pair. Cook-n-Serve buys the mitts from a wholesaler and receives a 40% trade discount. What is the markup rate on cost and the markup rate on selling price?
Answer:
The oven mitts cost
$13.80
But, Cook-n-Serve buys from a wholesaler, so they receive a discount of 40%
This means that they pay
(1-0.4)*($13.80) = 0.6*($13.80) = $8.28 for each pair
The markup rate on cost is 60%
And they sell for
$13.80/$8.28 = 1.67 times the price
1.67*100% = 167%
The markup rate on selling price is 167%
The equation of line AB is y = 2x + 4. Write an equation of a line parallel to line AB in slope-intercept form that contains point (3, −2). (4 points) y = 2x + 4 y = negative 1 over 2 x − 1 over 2 y = − 1 over 2 x − 7 over 2 y = 2x − 8
ANSWER
[tex]y = 2x - 8[/tex]
EXPLANATION
To find the equation of a straight line, we need the slope and a point on that line.
We were given the equation of another line that will help us determine the slope . The given line has equation:
[tex]y = 2x + 4[/tex]
This equation is of the form
[tex]y = mx + b[/tex]
where
[tex]m = 2 \: \: is \: the \: \: slope.[/tex]
Since our line of interest is parallel to this line, their slopes are the same.
The line also contains the point (3,-2).
So we substitute the slope and point into the slope-intercept formula:
[tex] - 2= 2(3)+ b[/tex]
[tex] - 2 =6 + b[/tex]
[tex] \implies \: b = - 2 - 6 = - 8[/tex]
The required equation is
[tex]y = 2x - 8[/tex]
Final answer:
The equation of a line parallel to y = 2x + 4 and passing through the point (3, −2) is y = 2x − 8.
Explanation:
To find the equation of a line parallel to line AB with the equation y = 2x + 4 that passes through the point (3, −2), we need to use the fact that parallel lines have the same slope. Line AB has a slope of 2, so our new line will also have a slope of 2. Now, we use the point-slope form of a line: y − y1 = m(x − x1), where (x1, y1) is the point the line passes through and m is the slope. Substituting our point and slope in, we get y − (−2) = 2(x − 3). Simplifying, we get y + 2 = 2x − 6, and after moving the 2 to the other side, the final equation in slope-intercept form is y = 2x − 8.
The rectangular backboard of a basketball court needs to be assembled. Its area is given as 18,900 cm2 and the width as 1.8 m.
What is the backboard’s length in metres?
m
The seating space around the basketball court is shown below:
What is the perimeter of the total area?
m
What is the area of the seating space?
m2
Answer:
length=1.05m
perimeter=2.7m
Step-by-step explanation:
18900 in m^2=1.89 m^2
area=length*width
1.89=length*1.8 m
length=1.89÷1.8
length=1.05 m
perimeter=(l+w) 2
perimeter=(1.05+1.8)2
perimeter=2.85×2
perimeter=2.7 m
a. The rectangular backboard’s length in meters is 1.05 meters.
b. The perimeter of the total area in meters is 5.7 meters.
Given the following data:
Area of rectangular backboard = 18,900 [tex]cm^{2}[/tex]Width of rectangular backboard = 1.8 meters.Conversion:
10,000 [tex]cm^{2}[/tex] = 1 [tex]m^2[/tex]
18,900 [tex]cm^{2}[/tex] = X [tex]m^2[/tex]
Cross-multiplying, we have:
[tex]X = \frac{18900}{10000}[/tex]
X = 1.89 [tex]m^2[/tex]
a. To find the backboard’s length in meters:
Mathematically, the area of a rectangle is given by the formula;
[tex]A = LW\\\\1.89 = L(1.8)\\\\L = \frac{1.89}{1.8}[/tex]
Length, L = 1.05 meters.
b. To find the perimeter of the total area in meters:
Mathematically, the perimeter of a rectangle is given by the formula;
[tex]Perimeter = 2(L+W)[/tex]
Substituting the values into the formula, we have;
[tex]Perimeter = 2(1.05+1.8)\\\\Perimeter = 2(2.85)[/tex]
Perimeter = 5.7 meters
Find more information: brainly.com/question/897975