Answers
The idea is that we have these arguments in symbolic form
P = Ron eats lunch today
Q = Ron eats a sandwich
R = Ron will drink a glass of milk
The format is
"If P then Q" ----> "if Q then R" so therefore "If P then R"
We see that P leads to Q, then Q leads to R. So overall P leads to R. We connect them as a chain of sorts. We can skip over Q since we know the first point will lead to the last. Think of it as a shortcut of sorts.
Related Questions
Consider the diagram and the paragraph proof below.
Given: Right △ABC as shown where CD is an altitude of the triangle
Prove: a2 + b2 = c2
Because △ABC and △CBD both have a right angle, and the same angle B is in both triangles, the triangles must be similar by AA. Likewise, △ABC and △ACD both have a right angle, and the same angle A is in both triangles, so they also must be similar by AA. The proportions and are true because they are ratios of corresponding parts of similar triangles. The two proportions can be rewritten as a2 = cf and b2 = ce. Adding b2 to both sides of first equation, a2 = cf, results in the equation a2 + b2 = cf + b2. Because b2 and ce are equal, ce can be substituted into the right side of the equation for b2, resulting in the equation a2 + b2 = cf + ce. Applying the converse of the distributive property results in the equation a2 + b2 = c(f + e).
Which is the last sentence of the proof?
A. Because f + e = 1, a2 + b2 = c2.
B. Because f + e = c, a2 + b2 = c2.
C. Because a2 + b2 = c2, f + e = c.
D. Because a2 + b2 = c2, f + e = 1.
Answers
This is because since f + e = c,
then a² + b² = c(f + e)
a² + b² = c(c)
a² + b² = c²
In the right angle triangle ABC [tex]\rm a^2+b^2=c^2[/tex] because (e + f = c) and this can be determined by using the Pythagorean theorem.
Given :
Right △ABC is shown where CD is an altitude of the triangle.
The following steps can be used in order to prove that [tex]a^2+b^2=c^2[/tex]:
Step 1 - According to the Pythagorean theorem, the sum of the square of the shorter side is equal to the square of the longer side.
Step 2 - The Pythagorean theorem is given below:
[tex]\rm H^2=B^2+P^2[/tex] --- (1)
where H is the hypotenuse, B is the base, and P is the perpendicular.
Step 3 - So, according to the given diagram:
H = e + f
B = a
P = b
Step 4 - Substitute the values of the known terms in the expression (1).
[tex]\rm a^2+b^2=(e+f)^2[/tex]
Step 5 - According to the diagram, (e + f = c). So, the above expression becomes:
[tex]\rm a^2+b^2=c^2[/tex]
Therefore, the correct option is C).
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5q + 3 = 3h solve for q (literal equations)
Answers
5q = 3h - 3
q = (3h - 3) / 5
or
3(h -1)
q = ---------------
5
hope it helps
Can anybody help me with this? It's geometry
Answers
I hope this helps!
Choose the graph that matches the following system of equations 4x +2y=-2 x-3y=24
Answers
4x + 2y = -2 represents the red line.
x - 3y = 24 represents the blue line.
The solutions of the above system of equations is x = 3 and y = -7 and the graph of above system of equations is as shown below.
What is system of equations?"It is a finite set of equations for which we find the solution."
For given question,
We have been given a system of equations.
4x +2y = -2 ................(i)
x - 3y = 24 ................(ii)
From equation (ii),
x = 24 + 3y .............(iii)
Substitute this value of x in equation (i)
⇒ 4(24 + 3y) +2y = -2
⇒ 96 + 12y + 2y = -2
⇒ 14y = -98
⇒ y = -7
Substitute this value of y in equation (iii)
⇒ x = 24 + 3(-7)
⇒ x = 24 - 21
⇒ x = 3
Therefore, the solutions of the above system of equations is x = 3 and y = -7 and the graph of above system of equations is as shown below.
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Et f(x) = 9x − 2 and g(x) = −x + 3. find f(g(x)). −9x − 2 −9x + 5 −9x + 25 −9x + 27
Answers
f(x) = 9x − 2 and g(x) = −x + 3.
f(g(x)) = f (-x+3) = 9(-x+3)-2
f(g(x)) = = -9x +25
Answer:
its a on edg
Step-by-step explanation:
im 100%
Please help :)))) ( attachment )
Answers
f(x) = -2x+34
g(x) = (-x/3) - 10
h(x) = -|3x|
k(x) = (x-2)^2
This is a trial and error type of problem (aka "guess and check"). There are 24 combinations to try out for each problem, so it might take a while. It turns out that
g(h(k(f(15)))) = -6
f(k(g(h(8)))) = 2
So the order for part A should be: f, k, h, g
The order for part B should be: h, g, k f
note how I'm working from the right and moving left (working inside and moving out).
Here's proof of both claims
-----------------------------------------
Proof of Claim 1:
f(x) = -2x+34
f(15) = -2(15)+34
f(15) = 4
-----------------
k(x) = (x-2)^2
k(f(15)) = (f(15)-2)^2
k(f(15)) = (4-2)^2
k(f(15)) = 4
-----------------
h(x) = -|3x|
h(k(f(15))) = -|3*k(f(15))|
h(k(f(15))) = -|3*4|
h(k(f(15))) = -12
-----------------
g(x) = (-x/3) - 10
g(h(k(f(15))) ) = (-h(k(f(15))) /3) - 10
g(h(k(f(15))) ) = (-(-12) /3) - 10
g(h(k(f(15))) ) = -6
-----------------------------------------
Proof of Claim 2:
h(x) = -|3x|
h(8) = -|3*8|
h(8) = -24
---------------
g(x) = (-x/3) - 10
g(h(8)) = (-h(8)/3) - 10
g(h(8)) = (-(-24)/3) - 10
g(h(8)) = -2
---------------
k(x) = (x-2)^2
k(g(h(8))) = (g(h(8))-2)^2
k(g(h(8))) = (-2-2)^2
k(g(h(8))) = 16
---------------
f(x) = -2x+34
f(k(g(h(8))) ) = -2*(k(g(h(8))) )+34
f(k(g(h(8))) ) = -2*(16)+34
f(k(g(h(8))) ) = 2
Sophia used the digits 6, 3, and 8 to write a number less than 6 and greater than 5. Her number has three digits, and the digit in the tenths place is odd. She used each digit only once in the number. What is Sophia's number?
Answers
The Johnsons framed a family picture to hang on the wall. The perimeter of the frame is 72 inches. Use the formula P = 2ℓ + 2w to find the length of the frame if the width is 19 inches.
Answers
2l + 2(19) = 72
2l + 38 = 72
2l = 34
l = 17
Hope this helps!
The length of the picture frame is 17 inches, which is found by substituting the given width and perimeter into the perimeter formula and solving for the length.
The question asks to calculate the length of a picture frame using the perimeter formula P = 2l + 2w, where P stands for the perimeter, l is the length, and w is the width. Given that the width (w) is 19 inches and the perimeter (P) is 72 inches, we can substitute these values into the formula:
P = 2l + 2w
72 = 2l + 2(19)
72 = 2l + 38
2l = 72 - 38
2l = 34
l = 34 / 2
l = 17 inches
So, the length (l) of the frame is 17 inches.
Allison practices her violin for at least 12 hours per week. She [practices for three fourths of an hour each session. If Allison has already practiced 3 hours this week, how many more sessions remain for her to meet or exceed her goal?
Please show the Inequality
Answers
If she practices 3/4 of an hour a week we need to find out how much time is 3/4 of an hour. To do this we divide 60/4 and get 15. We check by multiplying 15 x 4 and get 60 so we know we are correct.
Now we know that 1/4 of an hour is 15 minutes, but we need to know how long she practices per session. Because 15 is 1/4 we multiply 15 x 3 to make it 3/4.
15 x 3 is 45. We check by dividing 45 by 3 and we do get 15 so we are correct.
If 3/4 of an hour is 45 minutes and she practices for 3/4 of an hour then we know that for every session she practices for 45 minutes.
The question states that she practices for 3 hours every week, since we know that we need to multiply 45 (because she practices 45 minutes every session) by a number that will get us 3 hours.
45 x 4 is 180 minutes (or three hours) we divided 180 by 4 and got 45 thus we are correct.
Which in turn means she has done 4 sessions this week. Since now we know that 4 sessions is 3 hours (making the ratio 4:3) we can multiply to find how many sessions she has left to do this week.
So if we have 4:3 then we can make it 8:6 (which means we know have 8 sessions and 6 hours) now we can make it 12:9 (12 sessions and 9 hours) and add it once more to get 16:12 (or 16 sessions and 12 hours).
Now we know that it takes 16 sessions for her to reach twelve hours, and since she and already done 4 sessions and 3 hours, it means that she has 12 sessions left to do until she is able to get her 12 hour a week goal.
—
Hope this helped, have a great day! :D
Answer:
[tex]3+\frac{3}{4}x\geq 12[/tex]
Step-by-step explanation:
Given,
The number of hour he already practiced in this week = 3,
Also, she practices for three fourth of an hour each session,
If x be the number of remaining session,
So, the additional number of hours he practiced in this week = [tex]\frac{3x}{4}[/tex]
Thus, the total number of hours he practiced in this week = [tex]3+\frac{3x}{4}[/tex]
According to the question,
Total number of hours ≥ 12 hours
[tex]\implies 3+\frac{3x}{4}\geq 12[/tex]
Which is the required inequality.
If p(x) = 2x2 – 4x and q(x) = x – 3, what is (poq)(x)
Answers
If p(x) = 2x2 – 4x and q(x) = x – 3,
(poq)(x) = p(q(x)) = p(x-3) = 2(x-3)² -4(x -3).....calculate
One day a store sold 17 sweatshirts. white ones cost $10.95 and yellow ones cost $ 11.50. in all, $192.75 worth of sweatshirts were sold. how many of each color were sold?
Answers
Let y be the number of yellow sweats
$192.75 = $10.95x+ $11.50y
X+y=17
X= 17-y
192.75 = 10.95 (17-y) + $11.50y
192.75 = 186.15 -10.95y +11.50y
192.75-186.15 = 0.55y
6.6/0.55 = y
12= y
X+y = 17
X+ 12 = 17
X= 5
(5, 12)
How many different combinations of a 4-member debating team can be formed from a group of 10 qualified students?
Answers
what are rational numbers
Answers
If AB is parallel to CD and the slope of CD is -8, what is the slope of AB
Answers
Parallel lines: two lines that have the same slope, but different y-intercepts.
Therefore, by definition AB HAS to have the same slope as CD. If it has a different slop, the lines cannot be parallel to each other. So, the answer is AB has a slope of -8. Hope this helped! Have a nice day! :)
What is radical 64/8 simplified
Answers
Answer:
2^(6-3) = 2^3 = 8
Step-by-step explanation:
To simplify radical 64/8
We will express 64 and 8 in powers of 2
64 = 2×2×2×2×2×2= 2^6
8 = 2×2×2=2^3
From the law of indices,
a^5 / a^3 = a^ (5-3) = a^2
Applying this law of indices to the given radical,
64/8 = 2^6/ 2^3
= 2^(6-3)
= 2^3 = 8
Also, we can try another way. since
64 = 2×2×2×2×2×2= 2^6
8 = 2×2×2=2^3
64/8 = 2×2×2×2×2×2 / 2×2×2
2×2×2 cancels out 2×2×2 and
It remains 2×2×2 = 8
So which ever way we do it,
radical 64/8 simplified is 2^3 = 8
Simply x squared over Y plus Y squared over X all over Y squared minus XY plus X squared
Answers
KL = 4x+7 and LM= 5x-4
Answers
-4x -4x
7=x-4
+4 +4
11=x
Which property justifies that 4.37.25=4.25.37?
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Mia is three years older than twice for Sister Brooke’s age. The sum of their ages is less than 30. What is the greatest age Brooke could be? 7, 10, 8, or 9?
Answers
3+2x : Mia age
[tex]x + 3 + 2x < 30 \\ 3x + 3 < 30 \\ 3x < 27 \\ x < 9[/tex]
The greatest age could be 8
Answer:
the greatest age is 8
Step-by-step explanation:
i took the test
A movie theater sold a total of 390 adult and child tickets on a certain day. The theater sold 2.25 times as many adult tickets as child tickets. Each adult ticket cost $7 and each child ticket cost $3. How much revenue did the theater generate in ticket sales that day?
Answers
The Revenue generated by theater is $2,250.
What is simplification?Simply put, to simplify is to make something simpler. Simplifying an equation, fraction, or issue in mathematics entails taking something complex and making it simpler. The issue is made simpler by calculations and problem-solving strategies. We can simplify fractions by removing all common elements from the numerator and denominator and putting the fraction in its simplest/lowest form.
It is possible to simplify mathematical formulas by merging and grouping related terms. This makes it easy to understand and decipher the puzzle.
Given total ticket sold = 390
adult ticket + child ticket = 390
and 2.25 times as many adult tickets as child tickets
so adult ticket = 2.25 child tickets
Let child ticket be x
adult ticket = 2.25x
equation will be
2.25x + x = 390
3.25x = 390
x = 120
adult ticket = 390 - 120 = 270
cost of 1 adult ticket = $7
cost of 270 adult ticket = 7 x 270 = $1890
cost of 1 child ticket = $3
cost of 120 child ticket = 3 x 120 = $360
Total revenue = $1890 + $360
Total revenue = $2,250
Hence the total collection of theater is $2,250.
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Peter wants to put 2 coats of paint on both the inside and outside of the walls. There are 5 walls, each side having 45 ft2 of paintable surface. A gallon of paint covers x ft2. Explain how to write an expression to represent the number of gallons of paint Peter needs.
Answers
To calculate the number of gallons Peter needs, multiply the surface area of one side of the wall (225 ft2) by 2 for both sides, and then by 2 again for two coats, totaling 900 ft2. Then divide 900 ft2 by the coverage per gallon x to get the expression 900 / x.
To determine the number of gallons of paint Peter needs, we must first calculate the total paintable surface for both the inside and outside of the walls and then factor in the two coats of paint. Peter has 5 walls, with each side having 45 ft2 of paintable surface, so the total paintable surface for one side is 5 walls imes 45 ft2/wall = 225 ft2. Since he wants to paint both sides, we double this to get 450 ft2. For two coats, we need to double this again, resulting in 900 ft2. Now, if a gallon of paint covers x ft2, the number of gallons needed is total square footage divided by coverage per gallon, which is 900 ft2 / x ft2/gallon.
Therefore, the expression to represent the number of gallons Peter needs is 900 / x.
The area of this parallelogram is 24 square units the base is 8 units what is the height of the figure
Answers
Which correctly applies the distributive property to show an equivalent expression to (–2.1)(3.4)?
Answers
Answer:
(–2.1)(3) + (–2.1)(0.4)
Step-by-step explanation
It's D
Sum or difference for (6xy + 2y + 6x) + (4xy -x)
Answers
=6xy+2y+6x+4xy+−x=(6xy+4xy)+(6x+−x)+(2y)=10xy+5x+2yAnswer:=10xy+5x+2y
Planes X and Y are perpendicular. Points A, E, F, and G are points only in plane X. Points R and S are points in both planes X and Y. Lines EA and FG are parallel.
Based on this information, which lines could be perpendicular to RS? Check all that apply.
EA,ER,EF,FG,FS
Answers
Answer:
Step-by-step explanation:
Which of the following is irrational?
A. 7.51... x -4
B. root 16 + 3/4
C. root 3 + 8.486
D. 8 2/3 x 17.75
Answers
C. root 3 + 8.486
Option (C) √3 + 8.486 is an irrational number.
What is an irrational number?An irrational number is a type of real number which cannot be represented as a simple fraction. It cannot be expressed in the form of a ratio. Those real numbers that are not rational numbers are known as irrational numbers.
For the given situation,
We need to check the options, that is irrational.
Option A: 7.51... x -4
⇒ [tex](7.51 ) (-4)[/tex]
We can express this as fraction. So it is not an irrational number.
Option B: root 16 + 3/4
⇒ [tex]\sqrt{16} +\frac{3}{4}[/tex]
⇒ [tex]4+\frac{3}{4}[/tex]
We can express this as fraction. So it is not an irrational number.
Option C: root 3 + 8.486
⇒ [tex]\sqrt{3} +8.486[/tex]
⇒ [tex]\sqrt{3}[/tex] is an irrational number, so the sum is also an irrational number.
Option D: 8 2/3 × 17.75
⇒ [tex](8\frac{2}{3})(17.75)[/tex]
We can express this as fraction. So it is not an irrational number.
Hence we can conclude that option (C) √3 + 8.486 an irrational number.
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What is the equation of the line that passes through (5, -2) and (-3, 4)?
Answers
Answer: [tex]4y=-3x-7[/tex]
Step-by-step explanation:
The equation of a line passing through (a,b) and (c,d) is given by :-
[tex](y-b)=\dfrac{d-b}{c-a}(x-a)[/tex]
The equation of a line passing through (5, -2) and (-3, 4) is given by :-
[tex](y-(-2))=\dfrac{4-(-2)}{-3-5}(x-5)\\\\\Rightarrow\ y+2=\dfrac{6}{-8}(x-5)\\\\\Rightarrow\ y+2=\dfrac{-3}{4}(x-5)\\\\\Rightarrow\ 4(y+2)=-3(x-5)\\\\\Rightarrow\ 4y+8=-3x+15\\\\\Rightarrow\ 4y=-3x-7[/tex]
Two people bought 48 oranges pat bought five times as many as chris. how many oranges did chris buy
Answers
Chris bought [tex]8[/tex] Oranges.
What is reasoning ?Reasoning is the process of using existing knowledge to draw conclusions, make predictions, or construct explanations.
We have,
Chris and Pat bought [tex]48[/tex] oranges.
Let,
Oranges bought by Pat [tex]= x[/tex]
Oranges bought by Chris [tex]= y[/tex]
Now,
According to the question;
As Pat bought five times as many as bought by Chris.
i.e.
[tex]x=5y[/tex] [tex]........(i)[/tex]
And,
Chris and Pat bought [tex]48[/tex] oranges.
i.e.
[tex]x+y=48[/tex] [tex]........(ii)[/tex]
Now,
Substituting value of [tex]x[/tex] from equation [tex](i)[/tex] in equation [tex](ii)[/tex];
We get,
[tex]5y+y=48[/tex]
[tex]6y=48[/tex]
[tex]y=8[/tex]
Now,
Substituting value of [tex]y[/tex] in equation [tex](i)[/tex];
[tex]x=5y[/tex]
[tex]x=5*8[/tex]
[tex]x=40[/tex]
Hence, we can say that Chris bought [tex]8[/tex] Oranges and Pat bought [tex]40[/tex] Oranges.
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The measure of a supplement of angle is 12 more than three times the measure of a complement. find the measure of the angle.
Answers
So 180-x = 3(90-x)+12
180-x=282-3x
180+2x=282
x=102
x=51
A=12h(a+b)
Solve for h.
A. h=2Aa+b
B.h=a+b2A
C.h=A2(a+b)
D.h=2(a+b)A
Answers
A=12h(a+b)
Solve for h.
All these answers are incorrect
A. h=2Aa+b
B.h=a+b2A
C.h=A2(a+b)
D.h=2(a+b)A
The answer is
h = A / 12(a+b)
[tex]h = \frac{A}{12(a+b)}[/tex]
Answer:
h = 2A/a+b
or 1st answer
Step-by-step explanation: