[tex]\\ \sf\longmapsto \dfrac{4x+2}{x-9}=\dfrac{3}{5}[/tex]
[tex]\\ \sf\longmapsto 5(4x+2)=3(x-9)[/tex]
[tex]\\ \sf\longmapsto 20x+10=3x-27[/tex]
[tex]\\ \sf\longmapsto 20x-3x=-27-10[/tex]
[tex]\\ \sf\longmapsto 17x=-37[/tex]
[tex]\\ \sf\longmapsto x=\dfrac{-37}{17}[/tex]
Answer:
[tex]\frac{4x+2}{x-9}[/tex] = [tex]\frac{3}{5}[/tex]
5( 4x+ 2 ) = 3 ( x-9 )
20x + 10 = 3x - 27
20x -3x = -27 -10
17x = -37
x = - 37/17
if A=x² +xy-6, B=6xy-2x² +1 and C= 3x² +7 -3xy,find :(i) A+B+C (ii)A-B+C (iii)A+B-C
Answer:
A+B+C = 2(x+y)²
do rest in same manner
y+x-4+xy-2+3xy+2y+3+x
SIMPLIFIED
Answer: 4xy + 3y + 2x + 1
Step-by-step explanation:
Can someone explain this to me since I don’t get it that well?
Draw axes of symmetry of these shapes. Circle the shapes that have vertical symmetry.
Question 25
so it'd be the first, third and fourth one. all you gotta do is draw a vertical line through the middle of the 1st, 3rd and 4th.
Kojo wants to be an author. To improve his writing skills, every day after school he writes 3 pages of a story he is working on. Kojo has been writing his story for days. He has a total of 81 pages completed.
Write an equation to describe this situation.
Answer:
days = pages / rate = 81 pages // 3 pages / day
Step-by-step explanation:
pages = 81 pages
rate = 3 pages / day
days = ?
days = pages / rate
days = 81 // 3 pages / day
days = 27 days.
The line joining (3, p) to (7, –4p) is parallel to the line joining (–1, –3) to (3, 7). Find p.
Answer:
p = - 2
Step-by-step explanation:
Calculate the slope m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 1, - 3) and (x₂, y₂ ) = (3, 7)
m = [tex]\frac{7-(-3)}{3-(-1)}[/tex] = [tex]\frac{7+3}{3+1}[/tex] = [tex]\frac{10}{4}[/tex] = [tex]\frac{5}{2}[/tex]
Parallel lines have equal slopes
Calculate the slope of the other 2 points and equate to [tex]\frac{5}{2}[/tex]
with (x₁, y₁ ) = (3, p) and (x₂, y₂ ) = (7, - 4p)
m = [tex]\frac{-4p-p}{7-3}[/tex] = [tex]\frac{-5p}{4}[/tex] = [tex]\frac{5}{2}[/tex] ( cross- multiply )
- 10p = 20 ( divide both sides by - 10 )
p = - 2
What is 2.1 written as a mixed number?
If your talking about decimals 2.1 then:
Step 1) Convert 2.1 into a fraction; 21/10
Step 2) Convert 21/10 into a mixed number. 10 can go in 21 2 times, leaving us with 1. 2 is the whole number and 1 is the numerator. 10 will continue to be the deniometor.
2 1/10
I hope I've helped!
what is the ratio equalevent for 1:2
7:?
Answer:
the ratio equalevent for 1:2
7:21
Dissimilar to similar fractions
1. 3/5 and 2/3
2. 7/9 and 2/3
3. 4/6 and 1/8
4. 1/4 and 2/3
5. 4/6 and 3/5
( Please someone answer me? I really need help. I been struggling for 3 hours, still I can’t get the right answer. Please just leave a reply even answer only or reply to this question please )
Determine if the given information would form a unique triangle,many different triangles,of no triangles. 8 feet and 11 feet.
Does anyone know how to do this I really need help on this?
I need help ASAP pleaseee
Answer:Price of laptop A = $1220
Step-by-step explanation:
Sum of the price: A + B = 2185
Sum of the price: A + C = 2571
B : C = 5 : 7
B = 5/7 × C
So, replace the B:
A + 5/7 C = 2185
A + C = 2571
Eliminate by subtracting the first from the second: 2/7 C = 386
C = 1351
So, A = 2571 - 1351 = 1220
What are the percents of each of these?
Answer:
1. 80%
2. 12.5%
3. 10%
Step-by-step explanation:
The figure contains 100 equal squares, so the number of squares shaded is equal to the percentage of squares shaded.
Celsius temperature
Fahrenheit temperature
o
10
20
30
40
50
32
50
68
86
104
122
7. Is the relationship between the temperature scales proportional?
Why or why not?
Answer:
By definition, Proportional relationships have the following form:
y=kxy=kx
Where "k" is the Constant of proportionality.
By definition the graph of a proportional relationship is a straight line that passes through the origin (Point (0,0)(0,0) ).
Knowing this and having the relationship provided in the exercise, you can identify from the table that when:
x=0x=0 , y=32y=32
Then, the line does not pass through the origin, so you can conclude that the relationship between the temperature scales is not proportional.
Can someone help me (Geometry)
Answer:
X=3
AB=9
BC=9
AC=18
semoga membantu
Joes account was 1 more than one half of Chandras account. The sum of their accounts was $751. Find the amount of Joes account
Answer:
251$
Step-by-step explanation:
Let's say x represents Joes's account.
And y represents Chandra.
Since Joses account was 1 more than one half of chandra, the amount for Joes would be x = 1/2*y + 1
Now we can just say y = Chandra's amount.
So x + y = 751
And x = 1/2*y + 1
We have a systems of equation, and just plug in 1/2*y + 1 for x.
1/2*y + 1 + y = 751
1/2*y + y = 750 (subtract both sides by 1)
distribute y so...
y(1/2 + 1) = 750
y = 750/1.5
y = 500
Remember, y is Chandra. So plug in 500 for y in Joses equation, so 1/2(500) +
is 250 +1 so 251.
If pr is an angle bisector and m
Answer:
If pr is an angle bisector and m
?Step-by-step explanation:
13/17 as a decimal and a percent
Answer:
53.8462%
1.857
Step-by-step explanation:
Answers
A. 2
B. -2
C. 10
D. -10
Answer:b
10 to 20 is 10 and 80 to 60 is -20 so it’s -20/10 which is -2
Which sequences are arithmetic? Select three options.
–8.6, –5.0, –1.4, 2.2, 5.8, …
2, –2.2, 2.42, –2.662, 2.9282, …
5, 1, –3, –7, –11, …
–3, 3, 9, 15, 21, …
–6.2, –3.1, –1.55, –0.775, –0.3875,
Answer:
Below.
Step-by-step explanation:
Number 1 is arithmetic . The common difference (d) = 3.6.
Number 3 .. .. .. .... .. .................................... d = -4.
Number 4 ........................................................................ d = 6.
Answer: A C D (in green in file)
Step-by-step explanation:
Here is a excel file that do the job.
Data are in lines 1 and 2.
there are only 2 formula.(in B1 and B2)
Others cells are just copied (incrementiel)
Point B is the midpoint of AC. AB=3x and AC=5x+21 . What is the value of AB?
First, let's write down what we know.
AB = 3x
AC = 5x+21
Since B is the midpoint, AB is half the length of AC. The sum of AB + AB is equal to the length of AC.
AB + AB = AC
Let's plug in our values.
3x + 3x = 5x + 21
Simplify the left side.
6x = 5x + 21
Subtract 5x from both sides.
x = 21
Now, let's plug in 21 for x in AB
AB = 3x = 3(21) = 63
Determine whether the formula describes y as a function of x. Explain your reasoning. y= -3x^2-7x-6
Answer:
Step-by-step explanation:
This is the concept of algebra, a function is defined as a relationship whereby each input has one and only one single output.
In our expression;
y=-3x^2-7x-6
this can be written as:
f(x)=-3x^2-7x-6
such that, given x=0,1,2,....
f(0)=-6,
f(1)=-16
f(2)=-32
This implies that y is a function of x.
Can some one help me with this problem!
Sam is saving $5.75 per week to buy a CD player that costs $46.How many weeks will he have to save before he can buy the player?
Answer:
8 just did the test and passed it
4. Use the diagram to complete the proof by filling in the blanks.
Given: RT and PQ intersect at point S so that
RS = PS and ST = SQ.
Prove: RT = PQ
Step-by-step explanation:
substitution property :
we know that
RS + ST = PS + SQ
RS + ST = RT
PS + SQ = PQ
now we can use RT and PQ as substitutes in the first equation and we get
RT = PQ
Nina can braid 144 inches of rope in 3 hours find her unit rate round your answer to the nearest thousand
Answer:
48 inches
or
0.8 minutes
Step-by-step explanation:
To find the unit rate of inches per hour, divide 144 by 3.
144÷3=48
You don't need to round because there are no decimals.
To find the time to braid 1 inch, first multiply 3 by 60 (because there are 60 minutes in 1 hour).
3×60=180
Then divide 144 by 180.
144÷180= 0.8
You don't need to round because there are no thousandths.
Find all the missing elements:
В.
a
С
B = 60°
b = 7
C = 3
Ab
C
A = [?]° C = [ ]º a = [ ]
Round to the nearest tenth.
I
Enter
Answer:
A=90° C=30° a=8
Step-by-step explanation:
A=90° C=30° a=8
Can i get help with 6=3/4(10x+16)
Answer:
Check the steps shown in the picture : Hope it helps.
Please help asap ill give you brainlest
Consider − 196 14. Which THREE statements are correct?
A) The quotient is 14.
B) The quotient is −14.
C) The quotient is − 1 14.
D) −196 14 is equivalent to the expression.
E) 196 −14 is equivalent to the expression.
Answer:
B, E, and D are correct
Step-by-step explanation:
It is 2.5 to LR and another hour to Dallas
If I am traveling to Little
Rock for a flight, I have to
drive 2.5 hours. I am
flying to Dallas. To fly to
Dallas it takes
approximately an hour
from Little Rock. What
fraction of my trip is the
drive to Little Rock?
Round to the nearest
hundreth.
Answer:
Step-by-step explanation:
First make sure everything is in hours, yes everything is in hours !
So the fraction of little Rock to the rest is little Rock over the total.
2.5 hour/ 3.5 hours
0.714
The average number of workers of 12 companies are 42. If the average number of women of the same companies are 25, calculate the number of men in the companies.
Please I really need your help now.
Answer:
204 men.
Step-by-step explanation:
Total number of workers in all the companies = 42 * 12.
Total number of women in all the companies = 25 * 12.
So the total number of men = 12(42 - 25)
= 12 * 17
= 204 .
Answer:
204.
Step-by-step explanation:
Bài 1: Tính giá trị của biểu thức sau:
a) A = 4x – ( x +3)2 + ( x+3)(x-3) với x = - 2,4
b) B = ( 3x +4)2 -10x – 9( x - 4)(4+x) với x = -0,1
c) C = ( x + 5)2 - 2 ( x – 6 )( x+ 6) + ( x+2)( x-4) với x = -1/2
Answer:
Lời giải có ở trong ảnh bạn nhé
