Answer:
30%
Step-by-step explanation:
Which equation represents a line that is parallel to 2x-3y=9
A line parallel to 2x - 3y = 9 would have the same slope, 2/3, and a different y-intercept, represented as y = (2/3)x + b, where 'b' is any real number.
Explanation:The equation 2x - 3y = 9 represents a line in a standard form. To find a line that is parallel to it, we need another line with the same slope. The slope-intercept form of the given equation, by isolating y, is y = (2/3)x - 3. A parallel line must have the same slope, which is 2/3 in this case. Therefore, a line parallel to 2x - 3y = 9 could be represented as y = (2/3)x + b, where 'b' is any y-intercept. For example, if b = 5, a parallel line would be given by y = (2/3)x + 5.
Find the value of the expression.
5200 – [40%(300 * 42.5)]
Answer:
The value of the expression is 100
Step-by-step explanation:
we have
5,200-[40%(300*42.5)]
we know that
(300*42.5)=3*100*42.5=3*4,250=12,750
40%=40/100=0.40
substitute
5,200-[0.40*12,750]
5,200-5,100=100
What is the order of √5 , -0.1, -5/3 , 0.7, √2from least to greatest?
Answer:
-5/3, -0.1, 0.7, √2 and √5
Step-by-step explanation:
To start ordering these items, we first need to have a common point of comparison... so we'll get an approximation of their decimal value. No need to be very precise, just have a rough estimate:
√5: roughly 2.2
-0.1: -0.1
-5/3: -1.66
0.7: 0.7
√2: roughly 1.4
Now that we have the same comparing point (a decimal value), it's easy to sort them from the smallest value to the greatest value:
-5/3, -0.1, 0.7, √2 and √5
Of course, √2 is smaller than √5
Answer:
[tex]\large\boxed{-\dfrac{5}{3},\ -0.1,\ 0.7,\ \sqrt2,\ \sqrt5}[/tex]
Step-by-step explanation:
[tex]\sqrt5\\\\-0.1=-\sqrt{0.1^2}=-\sqrt{0.01}\\\\-\dfrac{5}{3}=-\sqrt{\left(\dfrac{5}{3}\right)^2}=-\sqrt{\dfrac{25}{9}}=-\sqrt{2\dfrac{7}{9}}\\\\0.7=\sqrt{0.7^2}=\sqrt{0.49}\\\\\sqrt2\\\\-\sqrt{2\dfrac{7}{9}}<-\sqrt{0.01}<\sqrt{0.49}<\sqrt2<\sqrt5[/tex]
Nancy found that x = 1 is one solution to the quadratic equation (x + 2)2 = a. What is the value of a?
Answer:
9
Step-by-step explanation: (PLZ GIVE ME BRAINLIEST!!!! :))i did this question before
Answer:
The value of x is 9.
Step-by-step explanation:
Given equation,
[tex](x+2)^2=a[/tex]
If x = 1 is the solution of this equation,
Then it will satisfy the equation,
[tex]\implies (1+2)^2=a[/tex]
[tex]\implies (3)^2=a[/tex]
[tex]\implies a = 9[/tex]
Hence, the value of x is 9 if x = 1 is the solution of the given equation.
solve this system of linear equations. separate the x- and y- values with a comma. 6x +5y=-19 12x-8y=52
ANSWER
The solution is
(x,y)=(1,-5)
EXPLANATION
The equations are:
1st equation: 6x +5y=-19
2nd equation: 12x-8y=52
Multiply the first equation by 2:
3rd equation: 12x +10y=-38
Subtracy the 2nd equation from the 3rd equations.
12x-12x+10y--8y=-38-52
18y=-90
Divide both sides by 18.
y=-5
Put y=-5 into any of the equations and solve for x.
Preferably, the first equation will do.
6x +5(-5)=-19
6x -25=-19
6x=25-19
6x=6
x=1
The solution is
(x,y)=(1,-5)
True or False: 2y = -3x + 8 is an equation that represents a line parallel to the line 6x + 2y = 9.
For this case we have by definition, that if two lines are parallel then their slopes are equal.
We manipulate the equations algebraically to take them to the form y = mx + b.
Equation 1:
[tex]2y = -3x + 8\\y = - \frac {3} {2} x + 4[/tex]
Thus, the slope of this line is [tex]- \frac {3} {2}.[/tex]
Equation 2:
[tex]6x + 2y = 9\\2y = 9-6x\\2y = -6x + 9\\y = \frac {-6x + 9} {2}\\y = -3x + \frac {9} {2}[/tex]
The slope of this line is -3.
As the slopes are not equal, then the lines are not parallel.
Answer:
False
To fill an order, the factory dyed 851 yards of silk teal and 59 yards indigo How many yards of silk did it dye for that order?
Answer:
910 yards
Step-by-step explanation:
The total is the yards dyed teal plus the yards dyed indigo:
851 + 59 = 910
Total 910 yards of silk was dyed by the factory for that order.
What is addition?The addition is defined as a mathematical operation i.e. a method of adding numbers to get total.
We have,
Factory dyed silk teal = 851 yards,
Factory dyed silk indigo = 59 yards,
So,
To get the total we will add the given data,
i.e.
Total silk dyed = dyed silk teal + dyed silk indigo
= 851 + 59
= 910 yards,
So,
In total 910 yards of silk was dyed by the factory.
Hence, we can say that total 910 yards of silk was dyed by the factory for that order.
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What is the volume of this prism?
units3=
Answer:
240 units^3
Step-by-step explanation:
To find the volume of a rectangular prism you just multiply length times width times height. So, 8*6*5 which equals 240 units^3.
The dimensions of the prism is given as Length = 8 units, width = 6, Height = 5. Therefore, the volume of the prism is 240 units^3.
How to find the volume of a right rectangular prism?Suppose that the right rectangular prism in consideration be having its dimensions as 'a' units, 'b' units, and 'c' units,
then its volume is given as:
[tex]V = a\times b \times c \: \: unit^3[/tex]
The dimensions of the prism is given as
Length = 8 units
width = 6
Height = 5
To find the volume of a rectangular prism
[tex]V = a\times b \times c \: \: unit^3[/tex]
V = 8 x 6 x 5
V = 240 units^3.
Therefore, the volume of the prism is 240 units^3.
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What is the correct answer?
Answer:
160
Step-by-step explanation:
The top right quadrant is 90 and the given is 70, adding them equal 160. It is the only option that is greater than 90 degrees anyway.
Factor completely and find the roots of the following. X^2+12x+27=0
Answer:
x = - 9, x = - 3
Step-by-step explanation:
Given
x² + 12x + 27 = 0
To factorise the quadratic
Consider the factors of the constant term (+ 27) which sum to give the coefficient of the x- term (+ 12)
The factors are + 9 and + 3, since
9 × 3 = 27 and 9 + 3 = 12, hence
(x + 9)(x + 3) = 0
Equate each factor to zero and solve for x
x + 9 = 0 ⇒ x = - 9
x + 3 = 0 ⇒ x = - 3
3x+5y=105
6x+2y=114
Answer:
3x + 5y = 105
3x + y = 57
------------------
4y = 48
y = 12, x = 15
{(15, 12)}
Help!!
Solve this 6x^3 - 8y^3 - 12x^2y^2 + 4xy
x=2/3 and y=1/2
Answer:
7/9
Step-by-step explanation:
6x^3-8y^3-12x^2y^2+4xy x=2/3 y=1/2
=6(2/3)^3-8(1/2)^3-12(2/3)^2(1/2)^2+4(2/3)(1/2)
=6(8/27)-8(1/8)-12(4/9)(1/4)+4(1/3)
=(16/9)-1-(4/3)+(4/3)
=(1 7/9)-1
=7/9
Find the value of x to the nearest tenth.
Answer:
x = 8.9 (nearest tenth)
Step-by-step explanation:
6^2 - 4^2 = 36 - 16 = 20
So
x = 2 * (√20)
x = 2 * 4.47
x = 8.94
Answer:
The value of x = 4√5
Step-by-step explanation:
Points to remember
For a right angled triangle
Hypotenuse² = Base² + Height²
To find the value of x
From the figure we can see a right angled triangle with,
hypotenuse = 6 and height = 4
Value of x = 2 * base
we have, Hypotenuse² = + Height²
Base² = Hypotenuse² - Height²
= 6² - 4²
= 36 - 16 = 20
Base = √20 = 2√5
x = 2 * 2√5 = 4√5
The value of x = 4√5
plz help and god bless
What is the median of Restaurant A's cleanliness ratings?
1
2
3
4
5
Answer: 3
Step-by-step explanation:
Median is the middle number if it is an odd number or if it is even you add the two middle numbers and divide by 2
The median cleanliness rating for Restaurant A is 3.
Explanation:The median of Restaurant A's cleanliness ratings can be found by arranging the ratings in order from lowest to highest and determining the middle value. In this case, the ratings are 1, 2, 3, 4, and 5. Since there is an odd number of ratings, the median is the middle value, which is 3. Therefore, the median cleanliness rating for Restaurant A is 3.
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I have here $12 would i divide it by 1/3 or divide it by 1/4
Answer:
You could divide $12 with either method
If you divided 12 by 1/4 you would get $48.
Divided by 1/3, $36.
name the angles that are complements to SWT
Answer:
Option C
Step-by-step explanation:
we know that
Two angles are complements if their sum is equal to 90 degrees
we have that
∠SWT=50°
so
Its complement must be equal to 40 degrees
we know that
∠USP=40°
∠TSV=40°
therefore
∠USP and ∠TSV are complements to ∠ SWT
Given three collinear points, which of the following is true?
There is exactly one plane that contains all three points.
They form a triangle.
They are not coplanar.
They are contained in multiple planes.
Answer:
I think it is A.
Step-by-step explanation:
Hope my answer has helped you!
The true statement is:
They are contained in multiple planes. Step-by-step explanation:We are given three points such that they are collinear i.e. they lie in a straight line.Hence, such points could never form a triangle.
Because a triangle is formed with the help of three non-collinear points.
Also, we know that the line containing the three collinear points in a plane will always lie in a plane and there may be multiple or infinite planes that may contain this line.Hence, the points will be coplanar (i.e. they lie in the same plane)
I don’t know the answer I need help
Answer:
[tex]-11b^2+8b-4[/tex]
Step-by-step explanation:
We can substitute in our expressions for P and Q to get
[tex]P=-4b^2+6b-9\\Q=7b^2-2b-5\\\\(-4b^2+6b-9)-(7b^2-2b-5)[/tex]
Next, we need to distribute the negative to the values within the parenthesis. Then we can combine like terms in order to get our answer
[tex](-4b^2+6b-9)-(7b^2-2b-5)\\\\-4b^2+6b-9-7b^2+2b+5\\\\-11b^2+8b-4[/tex]
Answer:
-11b^2 + 8b - 4
Step-by-step explanation:
(-4b^2 + 6b - 9) - (7b^2 - 2b - 5) =
Drop the first set of parentheses because it is unnecessary. To drop the second set of parentheses, you must distribute the negative sign. That means you must change every sign inside the second set of parentheses.
= -4b^2 + 6b - 9 - 7b^2 + 2b + 5
Now, group like terms.
= -4b^2 - 7b^2 + 6b + 2b - 9 + 5
Finally, combine like terms.
= -11b^2 + 8b - 4
Point of tangency of an inscribed circle divides a leg of an isosceles triangle into 3 cm and 4 cm line segments (considered from the vertex to the base). Find the perimeter of the triangle.
Answer:
22
Step-by-step explanation:
The perimeter of the isosceles triangle with a point of tangency that divides one leg into 3 cm and 4 cm segments is 22 cm, having both legs 7 cm each and the base 8 cm.
Given an isosceles triangle with a point of tangency that divides one of the equal legs into segments of 3 cm and 4 cm, we can determine the perimeter of the triangle by first understanding the properties of such a triangle. The two legs are congruent, and by the Theorem 6, the radius from the center to the point of tangency is perpendicular to the tangent and bisects it. Knowing that the point of tangency divides a leg into two parts, we can denote the entire length of one leg as 3 cm + 4 cm, which equals 7 cm.
Since the triangle is isosceles, both legs are equal in length. This means the other leg is also 7 cm. To find the base, we recall the perpendicular from the center bisects it (Theorem 6). Hence, the base is twice one of the segments, either 3 cm or 4 cm. We will choose the longer segment to ensure that the vertex angles remain acute, and hence the base would be 2 * 4 cm = 8 cm.
Now the perimeter (P) of the triangle can be found by adding the lengths of the two legs and the base: P = 7 cm + 7 cm + 8 cm = 22 cm. Therefore, the perimeter of the isosceles triangle is 22 cm.
20% of 180ft what is the quantity
Answer: 36ft
Step-by-step explanation: 180*.2=36
Answer:
36 ft
Step-by-step explanation:
to find 20% of 180 ft, multiply 180 ft by 0.20: 0.20(180 ft) = 36 ft
if f(x)=2x-6 and g(x)=x^3 what is (g f)(0)
The answer is:
[tex](g\circ f)(0)=-216[/tex]
Why?To composite functions, we need to evaluate functions in another function(s), for example:
Given f(x) and g(x), if we want to calculate f(x) composite g(x), we need to evaluate g(x) into f(x).
So, we are given the functions:
[tex]f(x)=2x-6\\g(x)=x^{3}[/tex]
And we are asked to calculate g(x) composite f(x), and then evaluate "x" to 0, so, calculating we have:
[tex](g\circ f)(x)=g(f(x))\\\\(g\circ f)(x)=(2x-6)^{3}[/tex]
Now that we have the composite function, we need to evaluate "x" equal to 0, so:
[tex](g\circ f)(0)=(2x-6)^{3}\\\\(g\circ f)(0)=(2*(0)-6)^{3}=(0-6)^{3}=-6*-6*-6=-216[/tex]
Hence, we have that:
[tex](g\circ f)(0)=-216[/tex]
Have a nice day!
Answer:
Step-by-step explanation:216
Solve for X in the following triangles.
X=
Answer:
The 51 and 62 triangle is 67°
The 43 triangle is 47°
Step-by-step explanation:
Angles in a triangle add to 180°
180 - ( 51 + 62 ) = 180 - ( 113 ) = 67°
180 - ( 43 + 90 ) = 180 - 133 = 47°
Peta attempted to solve the following equation. Explain Peta's error.
x (x - 5) = 20
x = 20 and x - 5 = 20
x = 20 and x = 25
when you have a problem you can tell me and i can help you
The value of x is 7.63
The formula of the determinant is
x = -b ± √(b² - 4ac) / 2a
Where the equation is in the form of ax² + bx + c = 0
The error made by Peta is to use the determinant formula to find the root of the equation x (x - 5) = 20.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example:
2x + 4 = 8 is an equation.
We have,
x (x - 5) = 20
Removing the parenthesis.
x² - 5x = 20
x² - 5x - 20 = 0
This is in the form of ax² + bx + c = 0
Now,
a = 1
b = -5
c = -20
Using the determinant formula.
x = -b ± √(b² - 4ac) / 2a
x = 5 ± √(25 + 80) / 2
x = 5 ± √105 / 2
x = (5 + √105) / 2
x = (5 + 10.25) / 2
x = 15.25/2
x = 7.63
x = (5 - √105) / 2
x = (5 - 10.25) / 2
x = -5.25/2
x = -2.63 (neglected)
Thus,
The value of x is 7.63
The error made by Peta is to use the determinant formula to find the root of the equation x (x - 5) = 20.
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Graph the system of equations. f(x)=−x^2+2x+4g(x)=−x+4 Which statements are true about the solutions to the system of equations? Select each correct answer.
An ordered pair that is the solution to the system of equations lies in Quadrant I .
An ordered pair that is the solution to the system of equations lies in Quadrant III .
An ordered pair that is the solution to the system of equations lies on the y-axis.
The x-coordinate of a solution to the system of equation is 3.
The y-coordinate of a solution to the system of equations is 4.
The y-coordinate of a solution to the system of equations is 0.
ANSWER
An ordered pair that is the solution to the system of equations lies on the y-axis.
The y-coordinate of a solution to the system of equations is 4.
EXPLANATION
The given system has equations:
[tex]y = {x}^{2} + 2x + 4[/tex]
[tex]y = - x + 4[/tex]
We equate both equations to get:
[tex] {x}^{2} + 2x + 4 = - x + 4[/tex]
This implies that,
[tex] {x}^{2} + 2x + x + 4 - 4 = 0[/tex]
[tex] {x}^{2} + 3x = 0[/tex]
[tex]x(x + 3) = 0[/tex]
[tex]x = 0 \: or \: x = - 3[/tex]
When x=0, y=-(0)+4=4
When x=-3, y=-(-3)+4=7
The solutions are: (0,4) and (-3,7)
The true statements about the system of equations are:
(a) An ordered pair that is the solution to the system of equations lies in Quadrant I .(c) An ordered pair that is the solution to the system of equations lies on the y-axis.(d) The x-coordinate of a solution to the system of equation is 3.(e) The y-coordinate of a solution to the system of equations is 4.The system of equations is given as:
f(x)=−x^2+2x+4
g(x)=−x+4
From the graph of the system of equations (see attachment), we have the following point of intersections
(x,y) = (0,4) and (3,1)
So, the true statements about the system of equations are:
(a), (c), (d) and (e)
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A cylindrical shaped drum is used to store basketballs in a gymnasium. The hollow drum measures 48 inches high with a 24 inch radius. If the radius of a basketball is 6 inches, the maximum number of basketballs that the cylindrical drum contains is ______ (192, 48, 96)
Answer:
[tex]96\ basketballs[/tex]
Step-by-step explanation:
step 1
Find the volume of the cylinder (hollow drum)
The volume is equal to
[tex]V=\pi r^{2} h[/tex]
we have
[tex]h=48\ in[/tex]
[tex]r=24\ in[/tex]
substitute
[tex]V=\pi (24)^{2} (48)[/tex]
[tex]V=27,648\pi\ in^{3}[/tex]
step 2
Find the volume of one basketball
The volume of the sphere is equal to
[tex]V=\frac{4}{3}\pi r^{3}[/tex]
we have
[tex]r=6\ in[/tex]
substitute
[tex]V=\frac{4}{3}\pi (6)^{3}[/tex]
[tex]V=288\pi\ in^{3}[/tex]
step 3
Find the maximum number of basketballs that the cylindrical drum contains
so
Divide the volume of the cylinder by the volume of one basketball
[tex]27,648\pi/288\pi=96\ basketballs[/tex]
Lewis has a bag of colored marbles. The bag contains 24 red marbles , 36 blue marbles , and 60 yellow marbles. What are the ratios of the number of red marbles , blue marbles , and yellow marbles to the total number of marbles?
Answer:
Step-by-step explanation:
The total number of marbles is 24 + 36 + 60 = 120
Red: 24/120 = 1/5
Blue: 36/120 = 6/20 = 3/10
Yellow: 60 / 120 = 1/2
What is the amount of a $4,000.00 annuity due at 12 percent compounded semiannually for 3 years?
Answer:
$ 5674.076
Step-by-step explanation:
The question is on compound interest
The formulae = A= P(1+ r/n) ^nt .......where P is the principal amount, r is the rate of interest in decimal, n is number of compoundings per year and t is the total number of years.
Given; P= $4,000.00 , r=12/100=0.12, n=2 and t=3
Substituting values in the equation A= P(1+ r/n) ^nt
A= 4000 ( 1+0.12/2)^2×3
A=4000(1.06)^6
A=$ 5674.08
The fish tank has side lengths 20in, 10in and height 15in. The water level is two inches below the top of the tank. A glass sphere of radius 1in is dropped in to the tank. What is the new distance from the water to the top of the tank? How many of these balls can be put into the tank with the tank not overflowing?
Answer:
Part 1) The new distance from the water to the top of the tank is [tex]1.979\ in[/tex]
Part 2) The maximum number of balls that can be put into the tank with the tank not overflowing is 95
Step-by-step explanation:
step 1
Find the total volume of the tank
[tex]V=20*10*15=3,000\ in^{3}[/tex]
step 2
Find the volume of the tank if the water level is two inches below the top of the tank
[tex]V=20*10*(15-2)=2,600\ in^{3}[/tex]
step 3
Find the volume of the glass sphere
The volume of the glass sphere is equal to
[tex]V=\frac{4}{3}\pi r^{3}[/tex]
we have
[tex]r=1\ in[/tex]
assume
[tex]\pi=3.14[/tex]
substitute
[tex]V=\frac{4}{3}(3.14)(1)^{3}[/tex]
[tex]V=4.2\ in^{3}[/tex]
step 4
What is the new distance from the water to the top of the tank?
we know that
[tex]2 in -----> represent (3,000-2,600)=400\ in^{3}[/tex]
so
using proportion
Find how many inches correspond a volume of [tex]4.2\ in^{3}[/tex]
[tex]\frac{2}{400}\frac{in}{in^{3}}=\frac{x}{4.2}\frac{in}{in^{3}}\\ \\x=4.2*2/400\\ \\x=0.021\ in[/tex]
The new distance from the water to the top of the tank is
[tex]2-0.021=1.979\ in[/tex]
step 5
Find how many of these balls can be put into the tank with the tank not overflowing
we know that
The volume of one ball is equal to [tex]4.2\ in^{3}[/tex]
using proportion
[tex]\frac{1}{4.2}=\frac{x}{400}\\ \\x=400/4.2\\ \\x=95.23\ balls[/tex]
therefore
The maximum number of balls that can be put into the tank with the tank not overflowing is 95
Andrew is paid $4 per hour for the first 30 hours he works each week. He makes $5 per hour for each hour he works over 30 hours per week. In other words, total wages = fixed wages for 30 hours + additional wages at $5 per hour. Apply function notation to answer the following questions about Andrew’s wages. Part A Write a function that gives Andrew’s total wages when he works more than 30 hours. Use the variables w for wages and h for hours.
Answer:
f(w) = 120 + 5(30-h)
Step-by-step explanation:
It is given that, Andrew gets paid $4 for first 30 hours of the week
So,
For first 30 hours, his wage will be:
4(30) = $120
Now, let w denote wages and h denote total number or hours he works in the week
So he will be paid $5 for h-30 hours
So the function will be
f(w) = 120 + 5(30-h)
Where $120 is the fixed income for first 30 hours and the second term is the wage of hours more than 30 at the rate of $5 per hour..
Using the numbers 8, 6, 4, and 2 write an expression that equals 40.
Answer:
[tex]\large\boxed{(8\times6)-(4\times2)=48-8=40}[/tex]
The expression (8*2)*2 + 6 + 2 uses the numbers 8, 6, 4, and 2 to equal 40. The question tests knowledge of basic arithmetic operations.
Explanation:The question involves using the numbers 8, 6, 4, and 2 to create an expression that equals 40. This is a problem dealing with basic arithmetic operations like addition, subtraction, multiplication, and division. The expression can be formed as follows:
Multiply 8 by 2. (8*2 = 16). Multiply 16 by 2. (16*2 = 32). Add 6 to 32. (32+6 = 38). Add 2 to the 38. (38+2 = 40).
So, the expression is: (8*2)*2 + 6 + 2 = 40
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