Answer:
3(3a - 6b + 7c )
Step-by-step explanation:
The greatest common factor of 9, 18 and 21 is 3
Factor out 3 from each term
9a - 18b + 21c
= 3(3a - 6b + 7c) ← in factored form
Answer:
3(3a - 6b + 7c)
Step-by-step explanation:
Write each term as a multiplication of its factors. Then see which factors are in common to all terms.
9a - 18b + 21c =
= 3 * 3 * a - 2 * 3 * 3 * b + 3 * 7 * c
The common factors are shown below in bold:
= 3 * 3 * a - 2 * 3 * 3 * b + 3 * 7 * c
The only common factor is 3.
Now use the distributive property to factor out a 3.
= 3(3 * a - 2 * 3 * b + 7 * c)
Now multiply each term in parentheses again.
= 3(3a - 6b + 7c)
What are all the keys that must be pressed, in correct order, on the calculator shown to find the value of 462 divided by 3?
Find the coordinates of P so that P partitions the segment AB in the ratio 1:7 if A(7,14) and B(−1,−2).
Answer:
P(6, 12 )
Step-by-step explanation:
Using the Section formula, then
[tex]x_{P}[/tex] = [tex]\frac{7(7)+1(-1)}{1+7}[/tex] = [tex]\frac{49-1}{8}[/tex] = [tex]\frac{48}{8}[/tex] = 6
[tex]y_{P}[/tex] = [tex]\frac{7(14)+1(-2)}{1+7}[/tex] = [tex]\frac{98-2}{8}[/tex] = [tex]\frac{96}{8}[/tex] = 12
Hence P(6, 12 )
What is the product?
(x − 3)(2x2 − 5x + 1)
2x3 − x2 + 16x + 3
2x3 − 11x2 + 16x + 3
2x3 − 11x2 + 16x − 3
2x3 − x2 + 16x − 3
Answer:
Third option: 2x^3-11x^2+16x-3
Step-by-step explanation:
The product to be found is:
[tex](x-3)(2x^2-5x+1)[/tex]
Distributive property will be used for the product:
[tex]x(2x^2-5x+1)-3(2x^2-5x+1)\\[/tex]
Multiplication will give us:
[tex]=2x^3-5x^2+x-6x^2+15x-3\\Combining\ alike\ terms\\=2x^3-5x^2-6x^2+x+15x-3\\=2x^3-11x^2+16x-3[/tex]
The product is: 2x^3-11x^2+16x-3
Hence, third option is the correct answer ..
Answer:
The product is 2x³ - 11x² + 16x - 3 ⇒ 3rd answer
Step-by-step explanation:
* Lets explain how to find the product of binomial by trinomial
- If (ax² ± bx ± c) and (dx ± e) are trinomial and binomial, where
a , b , c , d , e are constant, their product is:
# Multiply (ax²) by (dx) ⇒ 1st term in the trinomial and 1st term in the
binomial
# Multiply (ax²) by (e) ⇒ 1st term in the trinomial and 2nd term in
the binomial
# Multiply (bx) by (dx) ⇒ 2nd term the trinomial and 1st term in
the binomial
# Multiply (bx) by (e) ⇒ 2nd term in the trinomial and 2nd term in the binomial
# Multiply (c) by (dx) ⇒ 3rd term in the trinomial and 1st term in
the binomial
# Multiply (c) by (e) ⇒ 3rd term the trinomial and 2nd term in
the binomial
# (ax² ± bx ± c)(dx ± e) = adx³ ± aex² ± bdx² ± bex ± cdx ± ce
- Add the terms aex² and bdx² because they are like terms
- Add the terms bex and cdx because they are like terms
* Now lets solve the problem
∵ The binomial is (x - 3) and the trinomial is (2x² - 5x + 1)
∴ (x)(2x²) = 2x³
∵ (x)(-5x) = -5x²
∵ (x)(1) = x
∵ (-3)(2x²) = -6x²
∵ (-3)(-5x) = 15x
∵ (-3)(1) = -3
∴ (x - 3)(2x² - 5x + 1) = 2x³ + -5x² + x + -6x² + 15x + -3
- Add the like terms
∵ -5x² and -6x² are like term
∴ Their sum is -11x²
∵ x and 15 x are like terms
∴ Their sum = 16x
∴ (x - 3)(2x² - 5x + 1) = 2x³ - 11x² + 16x - 3
* The product is 2x³ - 11x² + 16x - 3
Find the Area
i need help?
Check the picture below.
2x + 4y = 12
y= 2x-3
What is the solution to the system of equations?
• (-1,8)
(8, -1)
• (5. 3
Answer:
y=
−1
2
x+3
Step-by-step explanation:
is solved for y
Heather, Sarah, Nicky, and Jill each have nine markers. How many markers do they have in all?
in total: thirty-six (36) markers.
What is the value of [3.6]?
Answer:
3
Step-by-step explanation:
[ 3.6 ] represents the greatest integer function [ x ]
If x is an integer use that integer
If x is not an integer use the next smaller integer
[ 3.6 ] is not an integer, hence
[ 3.6 ] = 3
Answer:3
Step-by-step explanation: edge 2021
find the X-intercept
f(x)=3^(x-1)-2
The answer is:
The function intercepts de x-axis at "x" equal to 1.631.
Why?To find the x-intercept of the function, we need to make f(x) or "y" equal to 0, and then, isolate "x".
So, isolating we have:
[tex]f(x)=3^{(x-1)} -2\\\\0=3^{(x-1)} -2\\\\3^{(x-1)}=2\\\\Log_{3}(3^{(x-1)})=Log_{3}(2)\\\\x-1=0.631\\\\x=0.631+1=1.631[/tex]
Hence, we have that the function intercepts de x-axis at "x" equal to 1.631.
Have a nice day!
Note: I have attached a picture for better understanding.
where would you put 5/2 on a number line
Answer:
Step-by-step explanation:
You would simplify 5/2, making it 2 and 1/2. this would go in between 2 and 3 on a graph.
Step-by-step explanation:
5/2 = 2.5
see attached to find where 2.5 is located on the number line.
the volume of the a sphere whoes diameter is 18 cm is cubic cm . if it's diameter were reduced by half, it's volume would be of its original volume
Answer:
The new volume is 8 times smaller than the original volume
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube
Let
z-----> the scale factor
x ----> the volume of the reduced sphere
y ----> the volume of the original sphere
so
[tex]z^{3}=\frac{x}{y}[/tex]
we have
[tex]z=1/2[/tex] ----> scale factor
substitute
[tex](1/2)^{3}=\frac{x}{y}[/tex]
[tex](1/8)=\frac{x}{y}[/tex]
[tex]x=\frac{y}{8}[/tex]
therefore
The new volume is 8 times smaller than the original volume
Verify
The volume of the original sphere is
[tex]r=18/2=9\ cm[/tex] ---> the radius is half the diameter
[tex]V=\frac{4}{3}\pi (9)^{3}=972\pi \ cm^{3}[/tex]
the volume of the reduced sphere is
[tex]r=9/2=4.5\ cm[/tex] ---> the radius is half the diameter
[tex]V=\frac{4}{3}\pi (4.5)^{3}=121.5\pi \ cm^{3}[/tex]
Divide the volumes
[tex]972\pi \ cm^{3}/121.5\pi \ cm^{3}=8[/tex]
Which is another way to name ZUST?
•
ZTSR
ZTSU
ZUSR
LUTS
Answer:ZTSU
Step-by-step explanation:
Another way to name ∠UST is ∠TSU.
Option B is correct.
We have,
Angles are the figure formed by the intersection of two lines or rays by sharing a common point. This point is called the vertex of the angle.
Angles are usually measured in degrees or radians.
The angle mentioned in the figure is at the point S.
This angle is the smaller angle formed at the point S.
An angle can be represented in two ways, from left to right or from right to left.
Suppose, an angle is ∠ABC.
We can represent this as ∠CBA.
So, the angle represented is ∠TSU.
Hence the angle is ∠TSU.
Learn more about Angles here :
brainly.com/question/28598272
#SPJ5
The sum of two numbers is 981. One of number 703. What is the other number?
Answer:
278 probly
Step-by-step explanation:
i just subracted 981 and 703
please help Ill mark brainliest -5/7 times 1/5
[tex]-\dfrac{5}{7}\cdot\dfrac{1}{5}=-\dfrac{1}{7}[/tex]
How many different trios could be selected from a chorus of 20 singers? 20! C(20, 3) P(20, 3)
Answer:
C (20, 3) = 1140
Step-by-step explanation:
We are given that there is chorus of 20 singers and we are to find the number of different trios that can be selected from 20 singers.
This is a problem of combinations where the order of trios is not important.
[tex] C ( 2 0 , 3 ) = \frac { ( 2 0 ! ) } { ( ( 2 0 - 3 ) ! 3 ! ) } [/tex]
[tex]C ( 2 0 , 3 ) = \frac { 2 0 ! } { ( 1 7 ! ) ( 3 ! ) } [/tex]
[tex]C ( 2 0 , 3 ) = \frac{( 2 0 \times 1 9 \times 1 8 )}{( 3 \times 2 \times 1 )}[/tex]
C (20, 3) = 1140
Answer:
C(20, 3)
Step-by-step explanation:
have a good day
Which best describes a system of equations that has no solution?
-consistent, independent
-inconsistent, dependent
-consistent, dependent
-inconsistent
Answer:
Inconsistent equations describes a system of equations that has no solution.
Step-by-step explanation:
Inconsistent equations have no solutions and contain no further classes.
Inconsistent equations are defined as two or more equations that can never be solved, based on using one set of values for the variables.
What is the measure of AC?
Enter your answer in the box.
(4x - 5.5)
(5x+25)
Answer:
The measure of arc AC is 85°
Step-by-step explanation:
we know that
The inscribed angle measures half that of the arc comprising
so
m∠ABC=(1/2)[arc AC]
substitute
(4x-5.5)°=(1/2)[5x+25]°
(8x-11)°=(5x+25)°
8x-5x=25+11
3x=36
x=12°
Find the measure of arc AC
arc AC=(5x+25)°
arc AC=5(12)+25=85°
Answer:
The answer is 85
Step-by-step explanation:
I just took the test
The graph of f(x) = 2x is shown on the grid. The graph of g(x) = ()x is the graph of f(x) = 2x reflected over the y-axis. Which graph represents g(x)?
Answer:
[tex]g(x)=-2x[/tex]
Step-by-step explanation:
A point reflected across the y-axis maintains its y-coordinate, but its x-coordinate switches signs. So, a positive x-coordinate becomes negative, and a negative x-coordinate becomes positive.
Let's take a few points from the original function, f(x). Remember, if we know the function, we can find the y-coordinate for any x-coordiante by simply plugging it into the function's equation.
Generally, [tex]f(x)=2x[/tex]
So:
[tex]f(0)=2(0)=0\\f(1)=2(1)=2\\f(2)=2(2)=4[/tex]
Leading us to have the plot points (0,0), (1,2) and (2,4).
To reflect this across the y-axis for the g(x) equation, we just need to turn the x-coordinates negative, resulting in a set of (0,0), (-1,2), and (-2,4).
Since we know this is a linear function (because there are no exponents in the equation), we can calculate the slope of this new set of points by using just 2 of them. The slope will give us our equation, because since (0,0) is a point on our line, we know that the y-intercept is zero.
[tex]slope=\frac{(y_{2}-y_{1})}{(x_{2}-x_{1})} \\slope=\frac{(4-2)}{((-2)-(-1))} \\slope=\frac{2}{-1}\\slope=-2\\\\g(x)=-2(x)[/tex]
Using the digits 3, 4, 5, 6 and 7, without repetitions, calculate the
number of 4-digit numbers that are greater than 5 000 that can be
formed.
Jawapan:
Answer:
[tex]1\cdot4\cdot3\cdot2+2\cdot4\cdot3\cdot2=24+48=72[/tex]
Answer:
72
Step-by-step explanation:
There are five possible digits to choose from: 3, 4, 5, 6, and 7.
The number must be greater than 5000, so there are 3 possibilities for the first digit: 5, 6, or 7.
There's no repetition, so the second digit is one of 4 remaining possible digits.
That leaves 3 possible digits for the third digit. And 2 possible digits for the fourth digit.
So the number of possible four-digit numbers that can be formed is:
3 × 4 × 3 × 2 = 72
Which graph shows the solution to the system of linear inequalities below?
Answer:
Option B
The solution in the attached figure
Step-by-step explanation:
we have
Inequality A
[tex]y > -\frac{1}{3}x+1[/tex]
we know that
The solution of the inequality A is the shaded area above the dashed line
The equation of the dashed line is [tex]y=-\frac{1}{3}x+1[/tex]
The slope of the dashed line is negative [tex]m=-\frac{1}{3}[/tex]
Inequality B
[tex]y > 2x-1[/tex]
we know that
The solution of the inequality B is the shaded area above the dashed line
The equation of the dashed line is [tex]y=2x-1[/tex]
The slope of the dashed line is positive [tex]m=2[/tex]
therefore
The solution in the attached figure
The correct graph is:
Graph B
Step-by-step explanation:First inequality is given by:
[tex]y>\dfrac{-1}{3}x+1[/tex]
The inequality is a straight line that passes through (0,1) and (3,0) and also the line is dotted since the inequality is strict.
The shaded region is away from the origin since the inequality does not pass the zero point test.
Second inequality is given by:
[tex]y>2x-1[/tex]
The graph of this inequality is a dotted line (since the inequality is strict) and passes through (0,-1) and (1/2,0) and the shaded region is towards the origin
( since the line passes the zero point test )
Graph B represents the system of inequality.
Experience and education are examples of which factor that might determine a higher wage being paid to an
employee?
danger or risk
responsibility
authority
advanced qualifications
Need help asap
Experience and education are examples of advanced qualifications that is used to determine a high wage paid to an employee.
What is experience?"Experience is the skill or knowledge that a person can get by learning or doing some professional work or from life."
What is education?"Education is an activity which helps an individual to achieve a particular aim of life."
What are advanced qualifications?"Advanced qualifications is an activity which helps an individual to increase in the level of education and their learning skills for achieving something better in life."
What is wage?"Wage is the income which an individual earn with respect to the work he performed"
Hence, option d is correct.
To learn more about experience and education here
https://brainly.com/question/18433524
#SPJ2
A cone is placed inside a cylinder. The cone has half the radius of the cylinder, but the height of each figure is the same. The cone is tilted at an angle so its peak touches the edge of the cylinder’s base. What is the volume of the space remaining in the cylinder after the cone is placed inside it?
Answer:
[tex]\frac{11}{12}\pi r^{2}h\ units^{3}[/tex]
Step-by-step explanation:
we know that
Te volume of the cone is equal to
[tex]V=\frac{1}{3}\pi r^{2}h[/tex]
we have
[tex]r=(r/2)\ units[/tex]
substitute
[tex]V=\frac{1}{3}\pi (r/2)^{2}h[/tex]
[tex]V=\frac{1}{12}\pi r^{2}h[/tex]
Te volume of the cylinder is equal to
[tex]V=\pi r^{2}h[/tex]
we know that
To find the volume of the space remaining in the cylinder after the cone is placed inside it, subtract the volume of the cone from the volume of cylinder
so
[tex]\pi r^{2}h-\frac{1}{12}\pi r^{2}h=\frac{11}{12}\pi r^{2}h\ units^{3}[/tex]
What is the square root of ab2?
Answer:
sqrt.(a) * absolutevalue(b)
Step-by-step explanation:
You do abs value when you have an even exponent with an odd exponent result from b^2 to b^1.
Please mark for Brainliest!! :D Thanks!!
For more questions or more information, please comment below!
Answer: Hello there!
Well, the square root is the inverse function of the square potential.
This is if you have [tex](\sqrt{x} )^{2} = x[/tex] and [tex]\sqrt{x^{2} } = +-x[/tex]
A interesting part of the square root is that (-4)*(-4) = 16, and 4*4 = 16, so the solutions for [tex]\sqrt{16}[/tex] are -4 and 4. For this is that you see a +- symbol in the second equation.
Now, if you have the number [tex](a*b)^{2}[/tex]
Now, we put this inside a square root: [tex]\sqrt{(a*b)^{2} } = +-a*b[/tex]
So the solutions for the square root of (a*b)^2 are a*b and - a*b.
Find the missing terms in the equation so that it is true. (3x + ?)^2=9x^2 + ?? +49y^2
Answer:
see explanation
Step-by-step explanation:
Note that 9x² and 49y² are perfect squares.
9x² = (3x)² → 3x is the first term
49y² = (7y)² → 7y is the second term
Hence
(3x + 7y)² = 9x² + 42xy + 49y²
What is the solution to the inequality below?
2- 2x>-20
Answer:
x < 11
Step-by-step explanation:
2- 2x>-20
Subtract 2 from each side
2-2- 2x>-20-2
-2x> -22
Divide by -2. Remember that flips the inequality
-2x/-2 < -22/-2
x < 11
10. Mary drove her car 2,483 miles during a road trip. Now
she has 86,445 miles on her car. How many miles did her
car have before her trip?
Answer:
83,962
Step-by-step explanation:
You must subtract the miles gained while on the road trip from the miles the car had after the road trip.
86,445-2,483=83,962
Which of the following is graphed below?
Answer:
Step-by-step explanation:
Begin with process of elimination: As seen on the graph, there is a discontinuity at x=3. this means that x>=3. so we can eliminate B and C
Now you can see that at x = 3, two things happen. When moving to the left, x<3. when moving tot he right x>=3 so because of this you can eliminate D. The answer is A
tab
cap
3. A cylindrical oil drum has a radius of 0.28 m and an altitude of 0.83 m. How many cubic meters of oil
can the drum hold?
A. 1 m3
B.0.2 m3
C. 1.2 m3
D. 0.5 m3
Answer:
B
Step-by-step explanation:
We basically want to find the volume of this cylinder.
The volume of a cylinder is given by the formula [tex]V=\pi r^2 h[/tex]
where r is the radius and h is the height.
We plug the info given and find the volume:
[tex]V=\pi r^2 h\\V=\pi (0.28)^2 (0.83)\\V=0.20[/tex]
Correct answer B
what is the difference between -5 and 2?
Answer:
2 is the bigger number
Step-by-step explanation:
Answer:7
Step-by-step explanation:
Think about it this way your looking at a number line and at this point your looking at number -5 and then do bunny hops from -5 to 2 and however many hops you took is the difference between
At this same time in 2010, 78% of people said they went out dancing at least one night a month. Recently, this number has increased by only 2%. What is the recent percentage of people that go out dancing once a month?
The recent percentage of people that go out dancing at least one night a month, considering an initial percentage of 78% in 2010 and a recent increase of 2%, is 80%.
Explanation:The percentage of people who went out dancing at least once a month in 2010 was 78%. If the number has recently increased by 2%, we need to add these two percentages together to find the recent percentage. In mathematics, when an increase is given in percentage, it's added to the original.
So, let's do the calculation:
78% (percentage in 2010) + 2% (recent increase) = 80% (recent percentage).
So, the recent percentage of people who go out dancing at least once a month is 80%.
Learn more about Percentage Increase here:https://brainly.com/question/20818421
#SPJ3
what is (24x-35q) (56q+78x)
Answer:
= 1872x^2 - 1960q^2 - 1386xq
Step-by-step explanation:
First you should distribute.
(24x * 56q), (24x * 78x), (-35q * 56q), (-35q * 78x)
=1344xq + 1872x^2 - 1960q^2 - 2730xq
Now you combine like terms.
= 1872x^2 - 1960q^2 - 1386xq
**NOTE that (^2) means "squared"
Since there are no more like terms that is your final answer. I hope this helps love! :)