Answer:
2 -(-3)
Step-by-step explanation:
a committee of five congressmen will be selected from a group of seven democrats and four replublicans. find the number or ways obtaining exactly one republican
Combinations are a method of calculating the total outcomes of an event where the order of the outcomes is irrelevant. We will use the formula nCr = n! / r! * (n - r)! to calculate combinations.
How do you calculate combinations?Combinations are a method of calculating the total outcomes of an event where the order of the outcomes is irrelevant. We will use the formula nCr = n! / r! * (n - r)! to calculate combinations, where n represents the total number of items and r represents the number of items chosen at a time.Combinations are used in probability theory and other areas of mathematics to describe a sequence of outcomes where the order is irrelevant. When ordering a pizza, for example, it makes no difference whether you order it with ham, mushrooms, and olives or olives, mushrooms, and ham. You're going to get the same pizza!They can select one republican from the four republican by 4 ways, and than select the remaining 4 members
from the 7 republicans by [tex]C^{4} _{7}[/tex]= 7 x5 = 35 ways.
In all, 4 × 35= 140 selections are possible.
To learn more about : Probability
Ref : https://brainly.com/question/24756209.
#SPJ10
5. There are 2850.5 miles between Houston, TX and
Vancouver, Canada. How many meters is that equal to if 1
mile is equal to 1.6 km?
1km = 1000m
Answer:
Step-by-step explanation:123123km equals to 110m
simplifying like terms and distributive property;2(m + 1) + 5m
2(m + 1) + 5m
step 1
Apply distributive property
2*(m)+2*(1)+5m
2m+2+5m
Combine like terms
7m+27. The graph of f(x) = (1/2)^x was transformedto form the graph of b(x) = -(1/2)^x Whichdescribes the transformation?
Given:
There are given the function:
[tex]f(x)=(\frac{1}{4})^x[/tex]And,
The transferred function is:
[tex]f(x)=-(\frac{1}{4})^x[/tex]Explanation:
According to the question:
We need to describe the transformation:
So,
We can see that in the transfer function, there is given that a negative sign.
So,
The transformation is:
Reflection on the x-axis: reflected:
Final answer:
Hence, the correct option is A.
Seth earns $25 a day and $3 for each ticket he sells at the local theatre. Write and solve aninequality that can be used to find how many tickets he must sell in a day to earn at least $115.Write an inequality. *
The problem says Seth earns $25 a day and $3 for each ticket he sells.
Let's for each ticket he sells.
Let's
i will insert a picture of the question, this is a 3 part question, i will inserted more information
Part A:
By Angle-Angle Theorem,
Triangle BCA is similar with triangle BDC (∠B ≅ ∠B, and ∠C ≅ ∠D)
Triangle CDA is similar with triangle BCA (∠CBA ≅ ∠DCA, and ∠BCA ≅ ∠CDA)
By transitive property
ΔBCA ~ ΔCDA ~ BDC
Part B:
[tex]\begin{gathered} \text{By properties of similar triangle} \\ \frac{b}{c}=\frac{d}{b} \end{gathered}[/tex]Part C:
Cross multiplying the proportions we have
[tex]\begin{gathered} \frac{b}{c}=\frac{d}{b} \\ b\cdot b=cd \\ b^2=cd \end{gathered}[/tex]can you please help me with this
The equation of the line that passes through the points (-2,4) and (-4,3) is y = (1/2)x + 5.
We know the slope intercept form of a line is given by:-
y = mx + c
Where,
m represents the slope of the line,
c represents the y-intercept, and
(x,y) represents the ordered pair of each point on the line
We know that,
m = (3-4)/(-4-(-2)) = -1/-2 = 1/2
We can write,
4 = (1/2)(-2) + c
4 = -1 + c
4 + 1 = c
c = 5
Hence, the equation of the line is :-
y = (1/2)x + 5
The graph of the equation is attached below.
To learn more about equation of the line, here:-
https://brainly.com/question/21511618
#SPJ1
The Busy Bee store bottles fresh jars of honey at a constant rate. In 3 hours, it bottles 36 jars, and in 7 hours, it bottles 84 jars of honey.
Determine the constant of proportionality.
36
12
4
0.08
If the Busy Bee store bottles fresh jars of honey at a constant rate and In 3 hours, it bottles 36 jars, and in 7 hours, it bottles 84 jars of honey, then the constant of proportionality is 12
The Busy Bee store bottles fresh jar of honey at a constant rate.
That means number of bottle is directly proportional to the time taken
Number of bottle they bottles = k × Time taken
Where k is the constant of proportionality
In 3 hours, it bottles 36 jar
36 = k ×3
k = 36/3
k = 12
In 7 hours, it bottles 84 jar
84 = k × 7
k = 84/7
k = 12
Hence, if the Busy Bee store bottles fresh jars of honey at a constant rate and In 3 hours, it bottles 36 jars, and in 7 hours, it bottles 84 jars of honey, then the constant of proportionality is 12
Learn more about constant of proportionality here
brainly.com/question/8598338
#SPJ1
mikes's fittness center charges $30 per month for a membership. all day fitness club charges $22 per month plus an $80 initiation fee for a membership. after how many months will the total amount paid to the two fitness clubs be the same
Answer: 7 months
Step-by-step explanation: by 7 months you would have paid both memberships $300
fill in the blanks so the left side is a perfect square trinomial
We need to complete the perfect square. A perfect square has the following form:
[tex]a^2\cdot x^2+2\cdot a\cdot b\cdot x+b^2=(a\cdot x+b)^2[/tex]In our case we have:
[tex]x^2-8x+\cdots[/tex]We can immediately deterine the value of "a", which is the root of number multiplying x², since this number is 1, then:
[tex]a=1[/tex]This also means we can find "b", because the second term is equal to the product of 2, a, and b. So we have:
[tex]\begin{gathered} b=\frac{8}{2} \\ b=4 \end{gathered}[/tex]With this we can determine the blank, because it is b². So we have:
[tex]\begin{gathered} x^2-8x+4^2 \\ x^2-8x+16=(x-4)^2 \end{gathered}[/tex]The first missing space is 16 and the second is 4.
You deposit $5000 in a savings account that earns 1.5% interest compounded daily. After 1 yeat, you deposit an additional $5000 into the same savings account, but the interest is now 1.75% compounded daily. What is the value of the account after the second year?
The value of the amount after the second year is $10163.817.
In order to compute compound interest, we multiply the principle of the original loan by the annual interest rate multiplied by the number of compound periods minus one. Then we are left with the principal amount of the loan plus compound interest.
Amount after Compound Interest [tex]A = P(1+\frac{r}{nt} )^{nt}[/tex] where A is the amount, P is the Principle value, r is the rate of interest, n is the number of times it is compounded daily, and t is the time.
Given Information :
For 1st year, Principal Amount (P) = $5000
Interest (r) = 1.5 %
Time = 1 year
The amount is calculated compounded daily,
So, Calculating the amount after 1 year,
[tex]A = P( 1+\frac{r}{nt}) ^{nt} \\A = 5000(1+\frac{1.5}{365*100}) ^{365*1} \\A = 5000(1+0.00004109)^{365} \\A = 5000*1.015\\A =5075.55[/tex]
For 2nd Year, Principal Amount= (P) $5000
Rate of Interest (r) = 1.75%
Time (t) = 1 year
The amount is calculated compounded daily,
So, Calculating the amount after 1 year,
[tex]A =P(1+\frac{r}{nt}) ^{nt\\}\\A= 5000(1+\frac{1.75}{365*100}) ^{365*1} \\ A = 5000(1.00004795)^{365} \\A =5000*1.077\\A =5088.26[/tex]
Now, the value of the amount after the second year = $5075.55 +$5088.26 =$10163.817.
To read more about compound interest visit :
https://brainly.com/question/14295570
#SPJ1
it cost $6 per hour to water the grass. how much will it cost to water the grass for 7/3 hours
start by writing a relation
[tex]\begin{gathered} 1hour\longrightarrow\text{ \$6} \\ \frac{7}{3}hour\longrightarrow x \end{gathered}[/tex]find x using the relationship
[tex]x=(\frac{7}{3}\text{hour)}\cdot\frac{\text{ \$6}}{1\text{hour}}[/tex][tex]x=\text{ \$14}[/tex]Name the image of (4, - 2) after being translated along the vector < -2, -5 >.
To translate a point given its coordinate and a vector to translate by, we can simply add each value of the vector to the corresponding x and y coordinates of the point, so:
[tex](4,-2)\longrightarrow(4-2,-2-5)=(2,-7)[/tex]So, the image of the translations is (2, -7).
CHOOSE ALL ANSWERS THAT ARE CORRECT.The lengths of two sides of a triangle are 55 and 20.Select the possible lengths of the third side.-30-14-35-45-72-60-75
Given:
The lengths of two sides of a triangle are 55 and 20.
Required:
To find the possible lengths of the third side.
Explanation:
So, if the third side is x cm, then
[tex]55+20=75[/tex]So, we got
[tex]x<75[/tex]Now
[tex]\begin{gathered} x+20>55 \\ x>55-20 \\ x>35 \end{gathered}[/tex]Hence the conclusion is the value of x lies between 35 and 75.
Therefore, the possible third sides are 45, 72 and 60.
Final Answer:
The possible third sides are 45, 72 and 60.
Hello I need help in understanding a problem! Thank you!
The question asks us to find the vertex of the equation below:
[tex]y=-0.017x^2+1.08x+5.8[/tex]The question asks us to find the vertex using two methods.
For the first method, we will use is to plot the graph of the equation and highlight the coordinate of the vertex on the graph.
The second method will employ completing the square method to find the vertex of the equation.
Method 1:
Plotting the graph of the equation, we have:
From the plot above, we can see that the vertex is: (31.765, 22.953)
The next method must get the same values for the vertex coordinates.
Method 2:
This method is the completing the square method. It converts quadratic equations into their vertex forms.
The general equation for a vertex form of a quadratic equation is:
[tex]\begin{gathered} y=(x-h)^2+k \\ \text{where} \\ (h,k)\to\text{ Vertex coordinates} \end{gathered}[/tex]In order to apply "completing the square" method, we need to complete the following steps:
1. Factor out the coefficient of x-squared
2. Divide the coefficient of x by 2 and square the result
3. Add and subtract the answer from step 2 to the equation; then factorize to get the quadratic equation
in its vertex form.
Now, let us proceed to find this vertex form:
[tex]y=-0.017x^2+1.08x+5.8[/tex]1. Factor out the coefficient of x-squared
[tex]\begin{gathered} y=-0.017(x^2+\frac{1.08}{-0.017}x)+5.8 \\ y=-0.017(x^2-63.5294x)+5.8 \end{gathered}[/tex]2. Divide the coefficient of x by 2 and square the result
[tex]\begin{gathered} \text{Coefficient of x is: -63.5294} \\ \text{Divide the coefficient by 2 = }\frac{-63.5294}{2}=-31.7647 \\ \\ \text{square the result = }(-31.7647)^2=1008.996 \end{gathered}[/tex]3. Add and subtract the answer from step 2 to the equation; then factorize to get the quadratic equation
in its vertex form.
[tex]\begin{gathered} y=-0.017(x^2-63.5294x)+5.8 \\ \text{Add and subtract 1008.996} \\ y=-0.017(x^2-63.5294x+1008.996-1008.996)+5.8 \\ \text{remember that, 1008.996 =(31.7647})^2\text{ , from above} \\ \\ y=-0.017(x^2-63.5294x+31.7647^2-1008.996)+5.8 \\ y=-0.017(x^2-2(31.7647)x+31.7647^2-1008.996)+5.8 \\ \\ \text{Also, } \\ (x^2-2xb+b^2)=(x-b)^2 \\ if\text{ b = 31.7647,} \\ \\ y=-0.017((x-31.7647)^2-1008.996)+5.8 \\ \text{Expand the outer bracket} \\ \\ y=-0.017(x-31.7647)^2-0.017(-1008.996)+5.8 \\ y=-0.017(x-31.7647)^2+17.1529+5.8 \\ \\ y=-0.017(x-31.7647)^2+22.9529 \end{gathered}[/tex]Now that we have the equation in vertex form, we just need to compare the equation with the general formula for the vertex form, to get the coordinates of the vertex.
[tex]\begin{gathered} y=a(x-h)^2+k \\ y=-0.017(x-31.7647)^2+22.9529 \\ \text{ Comparing the two equations, we can conclude;} \\ \\ a=-0.017,h=31.7647,k=22.9529 \\ \\ \therefore\text{ vertex (h, k) = (31.7647, 22.9529)} \end{gathered}[/tex]Therefore, the final answer is: (31.7647, 22.9529)
Find the distance between the points (0, 6) and (3, 2).
Write your answer as a whole number or a fully simplified radical expression. Do not round.
units
Answer:
5.
Step-by-step explanation:
1. the formula of the required distance:
[tex]d=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2} ;[/tex]
2. according to the formula above:
[tex]d=\sqrt{3^2+4^2}=5.[/tex]
Which transformations will preserve the parallel and perpendicular lines in the rectangle?
Explanations:
• Take note that the sides of a rectangle are parallel
• All 4 angles are 90 degrees, when they intercept they form a perpendicular line .
• The reflection, rotation and the transformation, will still maintain and preserve the properties of rectangle,
,• opposite side are still going to be parallel and congruent,
90 degrees angles will still remain the same .
This shows that the properties of a rectangle are maintained
Help me out here please
To find the scale factor, we have to divide two corresponding sides
[tex]\frac{DE}{AB}[/tex]Using the given information, we have
[tex]\frac{20}{10}=2[/tex]Hence, the scale factor is 2.The product of the polynomials (3x + 2) and (-x^3-3) is ______.When this product is multiplied by (3 + x), the coefficient of x^4 in the result is______.
The product of the polynomials (3x+2) and (-x^3-3) is:
(3x+2)*(-x^3-3) = (3x)*(-x^3) + (3x)*(-3) + 2*(-x^3) + 2*(-3) = -3x^4 - 2x^3 -9x - 6
Multiplying it by (3 + x), we got:
(3 + x)*(-3x^4 - 2x^3 -9x - 6) = 3*(-3x^4) + 3(-2x^3) + 3*(-9x) +3*(-6) + x*(-3x^4) + x*(-2x^3) + x*(-9x) + x*(-6) = -3x^5 -11x^4 -6x^3 -9x^2 - 33x - 18
Therefore, the coefficient of x^4 is -11.
Write the equation of the line in slopeintercept form that passes through thepoints (-3, 1) and (2,6).
Answer:
[tex]y=x+4[/tex]Slope Intercept Form
y = mx + b
Where
m is slope
b is y- intercept (y axis cutting point)
Now,
Slope is change in y's over change in x's:
[6-1]/[2--3] = 5/5 = 1
So, we have:
y = 1x + b
y = x +b
We can just plug in a point (let it be (2,6) ) in x and y and solve for b:
y = x + b
6 = 2 + b
b = 6-2
b = 4
Final equation:
[tex]y=x+4[/tex]in HJK, P is the centroid. If HM=39 find PM
If triangle HJK has a centroid P then we know that the side HP will be the double of PM so we can made an equation for HM
[tex]\begin{gathered} HM=HP+PM \\ HM=2PM+PM \\ HM=3PM \end{gathered}[/tex]Now we can replace the value of HM and solve for PM so:
[tex]\begin{gathered} \frac{39}{3}=PM \\ 13=PM \end{gathered}[/tex]Pentagon ZEBRA is similar to pentagon
LIONS. What is the length of RA in feet?
E
22 ft
13 ft
Z
18 ft
R
20 ft
A
10.4 ft
I
14.4 ft
17.6 ft
N 12 ft S
L
16 ft
After performing some mathematical operations, the length of RA is 15 feet.
What are mathematical operations?A function in mathematics known as an operation is one that transforms zero or more input values into a clearly defined output value. The operation's complexity is determined by its operand count. The four mathematical operations are functions that take numerical inputs (i.e., inputs) and turn them into numerical outputs (i.e., another number). These are multiplication, division, subtraction, and addition.So, the length of RA is:
As both the pentagons are similar, then:
EB/IO = 13/10.4 = 1.25BR/ON = 18/14.4 = 1.25ZA/LS = 20.16 = 1.25EZ/IL = 22/17.6 = 1.25Similarly,
RA/NS = RA/12 = 1.25RA = 12 × 1.25 = 15 ftTherefore, after performing some mathematical operations, the length of RA is 15 feet.
Know more about mathematical operations here:
https://brainly.com/question/20628271
#SPJ13
(m^a*m^a+2)^4 Simplify this expression
Answer:
m^8a+8m^6a+24m^4a+32m^2a+16
Step-by-step explanation:
Simple binomial theorem.
(x+y)n = nC0 xny0 + nC1 xn-1y1 + nC2 xn-2 y2 + ... + nCn-1 x1yn-1 + nCn x0yn
OR
(x+y)n = ∑nk=0nCk xn-kyk = ∑nk=0nCk xkyn-k
plugging the numbers into this theorem yields that answer.
What is the solution of the inequality 7(x+4) less than 2(-5)+3(x+9)?
Answer:
The solution is x < - 11/4.
Step-by-step explanation:
In inequality notation, 7(x+4) less than 2(-5)+3(x+9) simply means:
7(x+4) < 2(-5)+3(x+9) ⇒7x + 28 < - 10 +3x +27
To collect like terms, subtract 3x and 28 from both sides of the inequality, thus:
7x - 3x < - 10 + 27 - 28 ⇒ 4x < -11 ⇒ x < -11/4 [by dividing both sides of the inequality by 4]
Therefore, the solution is x < - 11/4.
Learn more about Linear inequality at brainly.com/question/29075210
#SPJ1
Select all of the angle pairs that are supplementary when two parallel lines are intersected by a transversal.
Linear pair
Vertical angles
Corresponding angles
Alternate interior angles
Alternate exterior angles
Consecutive interior angles
Consecutive exterior angles
Josh works as a tutor for $15 an hour and as a waiter for $13 an hour. This month, he worked a combined total of 95 hours at his two jobs.
Lett be the number of hours Josh worked as a tutor this month. Write an expression for the combined total dollar amount he earned this month.
total earned (in dollars)
An expression for the combined total dollar Josh earned this month is X = 15t + 13(95 - t).
What is a mathematical expression?A mathematical expression is a statement using a combination of numbers, variables, and mathematical operands.
Mathematical expressions may also use the equal symbol (=) to show that the two expressions are equal. Sometimes, the inequality signs are used when two expressions are not equivalent.
The pay rate per hour as a tutor = $15
The pay rate per hour as a waiter = $13
The combined total hours worked for the month = 95 hours
Let t = the number of hours worked as a tutor
Let X = Josh's total dollars earned for the month.
Josh's total earnings as a tutor for the month, A = 15t
Josh's total earnings as a waiter for the month, B = 13(95 - t)
The combined total dollar Josh earned this month, X = A + B
X = 15t+ 13(95 - t).
Thus, the total earnings by Josh for this month can be expressed as X = 15t+ 13(95 - t).
Learn more about mathematical expressions at https://brainly.com/question/1859113
#SPJ1
an airplane travels 3 miles in 24 seconds. At this rate, how many miles can the airplane travel per second
What is the point-slope from of the equation of the line that passes through the point( -1, -4) and has a slope of 3?
The equation of the line in point-slope form passing through ( - 1, - 4 ) and slope 3 is y + 4 = 1( x + 1 ).
The set of points that make up a line in a coordinate system is represented algebraically by a line's equation. An equation of a line is an algebraic expression that represents the many points that together make up a line in the coordinate axis as a set of variables, x, and y.
The point-slope form of an equation of the line is given as:
y - y₁ = m( x - x₁ ) where m is the slope and ( x₁, y₁ ) is the point on the line.
Now, the equation of line passes through ( - 1, - 4 ) and m = 1
Then,
y - y₁ = m( x - x₁ )
y - ( - 4 ) = 1( x - ( - 1 ) )
y + 4 = x + 1
Learn more about point slope form here:
brainly.com/question/6497976
#SPJ1
There are 50 people at the movies. Four times
as many people are seated than are standing
in line. How many people are seated?
40 people are seated. (Solved using the equation 4x + x = 50)
What is an equation?
An equation can be compared to a scale on which objects are weighed. When the two pans are filled with the same amount of anything (like grain), the scale will balance and the weights will be considered equal. To maintain the scale in balance, if any grain is taken out of one of the balance's pans, an equal amount must be taken out of the other pan. More broadly, if the identical operation is carried out on both sides of an equation, the equation remains in balance. Equations involving one or more functions and their derivatives are known as differential equations. By identifying a derivative-free formulation for the function, they may be resolved. Processes are modeled using differential equations.
The equation below is formed according to the question
4x + x = 50
or, 5x = 50
or, x = 50/5 = 10
Hence, no. of people seated = 4x10 = 40
To know more about equations, click on the link
https://brainly.com/question/27893282
#SPJ10
Evaluate the following expression. I will send a screenshot of the expression that I am having difficulty with.
Explanation
To solve the question, we will make use of PEMDAS
So, in solving the question
[tex]1\times(-4)-8\times\frac{9}{-3}[/tex]We will have
[tex]\begin{gathered} 1\times(-4)=-4 \\ \\ -8\times\frac{9}{-3}=-8\times-3=24 \end{gathered}[/tex]Combining the above, we will have
[tex]-4+24=20[/tex]Thus, we have our answer as 20
Answer = 20