Identify the mistake. Explain what the mistake is and what this person should have done.
Answers
Mistake:
2nd Line of Student Work.
Opening Brackets:
4*1 = 4 Correct
Problem is here: 4*5n = 20n, not 5n, Wrong
Related Questions
What is the solution to the system of equations below?
y = -5x - 1
4x - 7y = 7
Answers
Hi
When you have a system of equation, you generally have two unknowned value.
The trick is to express one letter as equal of something in the second letter.
We have two lines :
(1) : y = -5x-1
(2) : 4x-7y = 7
Here he job is half done as we have already "y" express in " x" with line (1) so : y = -5x-1
So I can rewrite line (2) as this : 4x-7y = 7
as y = -5x-1 so :
4x-7y = 7 become :
4x - 7 ( -5x-1) = 7
4x-7 * (-5x) - 7* (-1) = 7
4x +35x +7 = 7
4x +35x +7 -7 = 7-7
39x = 0
39x/39 = 0 /39
x = 0
So if X = 0 then we have in line (1) we have by replacing "x" by it's value : y = -5x-1
y = -5*0 -1
y = -1
Dont hesitate to ask in comments if it's still not clear.
determine whether the number is rational or irrational and round it to the nearest hundredth. √3
Answers
Answer:
If a square root is not a perfect square, then it is considered an rational number. These numbers cannot be written as a fraction because the decimal does not end (non-terminating) and does not repeat a pattern (non-repeating)...!!!
What is the scale factor from L to S
Answers
Answer:
-2
Step-by-step explanation:
Triangle S
Base = 2Height = 4Triangle L
Base = 4Height = 8For the base you must multiply 4 by -2 to get 2. Likewise for the height you must multiply 8 by -2 to get 4. Thus the scale factor from L to S is -2
Hope it helps,... Chow,...!
Explain what is the difference between radius
and circumference
Answers
Answer:
The circumference is the perimeter, specifically the perimeter of a circle. It can be solved by using the following formula:
C = 2πr
C stands for circumference.
π stands for pi, or 3.14 (rounded).
r stands for radius.
The radius is the distance from the center point of the circle to any point on the circle. It is denoted by the variable, r, as stated above. It is 1/2 of the diameter.
Answer:
the radius is the line from center to perimeter and circumference is the enclosed boundary
Step-by-step explanation:
radius- is any of the line segments from a circle or spheres center to its perimeter
circumference- the enclosed boundary a curved geometric figure, especially a circle
Help please and thank you (Algebra 1)
Answers
Answer:
17x² - 22x - 2
Step-by-step explanation:
Given
(5x² + 6x - 2) + 4x(3x - 7) ← distribute parenthesis
= 5x² + 6x - 2 + 12x² - 28x ← collect like terms
= 17x² - 22x - 2
a2+b2=c2 but solve for b.
(2’s are to the power)
Answers
Answer:
Step-by-step explanation:
a2+b2=c2
b2 = c2 - a2
b = ±√(c2 - a2)
please help me quickly and explain your answer (i have a guess on which is incorrect but im not sure)
Answers
Answer:
pretty sure its step 2
Step-by-step explanation:
What is (f + g)(x)? f(x) = -3x² + 6x g(x) = -X Write your answer as a polynomial or a rational in simplest form
Answers
explanation:
(f + g)(x) = -3x^2 + 6x - x
Answer:
- 3x² + 5x
Step-by-step explanation:
(f + g)(x)
= f(x) + g(x)
= - 3x² + 6x - x ← collect like terms
= - 3x² + 5x
Worth 30 points help plz!Graph the solution of the inequality −3(x + 1) ≤ 6 on the number line.
Group of answer choices
Filled circle at -1 shading to the right
Filled circle at -3 shading to the left
Filled circle at -1 shading to the left
Filled circle at -3 shading to the right
Answers
Answer: Filled circle at -1 shading to the left.
Step-by-step explanation:
-3x+3<6
-3 -3
_________
-3x<3
-3x/-3 3/-3
= -1
and the < sign means less than or equal to. Hope this helps!
Answer:Option D
Step-by-step explanation:
Guys for one of my math questions it is "show as many subtraction fraction questions that you can think of that equal 3/10
Answers
There is the whole family of a/10 - b/10 where a = b + 3
Eg 4/10 - 1/10, 5/10 - 2/10, 6/10 - 3/10 etc
Or you could get sneaky with 5/6 - 8/15, 27/40 - 3/8, 1/2 - 1/5, etc
There are an infinite number of fraction pairs with a difference of 3/10
Start with a multiple of 10 on the denominator eg 50 =5 x 10
Now pick numerators with a difference of 5 x 3 eg 11 and 26
This will give you 26/50 - 11/50 = 13/25 - 11/50 = 3/10
You will get more fun problems if you avoid relatively prime fractions so they will simplify
Eg denominator 60, numerator difference 18.
59/60 - 41/60 = 3/10 is not nearly as much fun as 45/60 - 27/60 = 3/4 - 9/20 = 3/10
What is equal to sec 20°
Answers
1.06418
The same as of sec 20 degrees in radians to obtain 20 degrees in radian multiply 20° by / 180° = 1/9
what is the LCM of 4489
Answers
Answer:
plz mark me brainliest
Step-by-step explanation:
thanks for question
What’s the answer to this question please help mee
Answers
Answer: 11c^3
Answer:
11c³
Step-by-step explanation:
The GCF of 44, 22 and 11 → 11
The GCF of [tex]c^{5}[/tex] , c³ and [tex]c^{4}[/tex] → c³
Then the GCF of the expression is 11c³
help help help help help
Answers
Answer:
it is b
Step-by-step explanation:
because it has the 2.3
Maureen's dad is 32 years older than Maureen. Six years ago, the sum of their ages was 52. How old is Maureen now?
Answers
Answer:
26
Step-by-step explanation:
3.
Which kind of function best models the data in the table? Graph the data and write an equation to model the data.
A. linear; y = x – 1
B. quadratic; y = x2 – 1
C. exponential; y = 3x – 1
D. linear; y = –x – 1
Answers
Explanation: y=mx+b
B=-1
M=0
Answer:
D. linear; y = –x – 1
Step-by-step explanation:
Linear; y=-x - 1
The slope is negative since it’s decreasing. So it’s not the first equation. It’s not a quadratic equation because there is no forming U shape for this data. It’s not a exponential function because the slope is not 3 and a exponential function is in the form y=a(b)^x
Answer:
The correct answer is D) linear; y = –x – 1
Step-by-step explanation:
To find this, use any values in the table and it will produce a true statement. This is how we check to see if a model is correct. See the two examples below for proof.
(4, 5)
y = -x - 1
-5 = -4 - 1
- 5 = -5 (TRUE)
(0, -1)
y = -x - 1
-1 = 0 - 1
-1 = -1 (TRUE)
What is the answer ?
Answers
Answer and Step-by-step explanation:
To find out the answer, we need to first find how much money it is to buy 1 kg of almonds.
So, do 34 divided by 4.
[tex]\frac{34}{4} = 8.5[/tex]
Now, multiply 8.5 by 5.
8.5 × 5 = 42.5
The cost for 5 kilograms of almonds is $42.5
#teamtrees #PAW (Water And Plant)
I hope this helps!
PLEASE HELP YOU WILL GET A BRAINLY AND A LOT OF POINTS
Answers
B) 13
C) x plus 5
D) 5
E) 4
Hope this is right sorry if it’s wrong
Supposed a certain game is fair and costs $4 if you lose and has a net payoff of $9 if you win. The only
possible outcomes of the game are winning and losing.
What is the probability of winning?
Answers
Answer:
32.5% Win Rate
Step-by-step explanation:
I got this answer by first:
( 9 ) * x + ( -4 ) * ( 1 - x ) = 0
9x - 4 + 4x = 0
13x = 4
then finally:
13/4 = 3.25 | And to get that into percent you multiply that by 10, giving you a 32.5% win rate. or 325 / 1000. Meaning you will win 325 out of 1000 games you play. Hope this helped!
Probability of winning is 0.69.
What is probability?Probability denotes the possibility of the outcome of any random event. The meaning of this term is to check the extent to which any event is likely to happen.
According to the question
Supposed a certain game is fair and costs $4 if you lose and has a net payoff of $9 if you win.
The only possible outcomes of the game are winning and losing.
The probability of winning = [tex]\frac{9}{4+9}[/tex]
= [tex]\frac{9}{13}[/tex]
= 0.69
Hence, probability of winning is 0.69.
Find out more information about probability here
https://brainly.com/question/11234923
#SPJ2
PLEASE HELP COMPARING RATIOS
Answers
Answer:
8 minutes per customer in Restaurant One.
6 minutes per customer in Restaurant Two.
7 minutes per customer in Restaurant Three.
Restaurant Two had the fastest service.
Method:
I divided the time it took – for example – 48 divided by 6. I would do this because I wanted to find out each person took (6 people), and the amount of time it took for each person to get their food. I would use division for this problem because I am finding how much each person took out of the whole time.
Answer
The 2nd restaurant is the fastest
Step-by-step explanation:
I. Compare Time per Customers
When 1st restuarant = 48/6 = 9
2nd restuarant = 42/7 = 6
3rd restuarant = 63/9 = 7
Given if in 1 min, I can serve 20 customers = 1/20 = 0.05
in 1 min, He can serve 10 customers = 1/10 = 0.1
See the different? I can serve better than him.
So The answer is the 2nd restuarant.
Hope that help :D
45 POINTS !!!!
no bull, or i will report and get my points back
can someone accuracy work this out, they did not have geometry
Answers
Answer:
((down below))
Step-by-step explanation:
If A is the midpoint of Line Segment XY, then we can conclude that the length of XA = the length of AY. ((in other words, XA = AY))
Find XA
Insert equations // 2x = 10x - 8It's best to solve for "x." So we do this by flipping the equation (you can do this in any way you want, but this seemed easier) // 8 = 10x - 2x8 = 8x // Divide for x // x = 1Finding the Length of AY (Calculating Length)
Substitute x = 1 from XA // 10(1) - 8We get an answer of 2 ((this is the length of AY))Finding the Length of XA
Substitute x = 1 from XA // 2(1)We get an answer of 2 ((this is the length of XA)Finding the Length of XY
XA = AY // the length of XA is 2 (or 2 units, or whatever you are measuring in) and the length of AY is 2, then finding the length of XY means adding both lengths togetherXA = AY = 2 = 2 = 2 + 2 = 4 ((the length of XY is 4))Which expression has a value of 13?
(12+6)÷3+3
12+6÷(3+3)
12+(6÷3+3)
(12+6)÷(3+3)
Answers
Answer:
Option b 12+6÷(3+3)
Step-by-step explanation:
12+6÷(3+3)
= 12+6÷6
= 12+1
= 13
Factor the polynomial by its greatest common monomial factor
9b^8+24b^3
Answers
9b^8 + 24b^3
= 3b^3 ( 3b^5 + 8 )
50 POINTS AND WILL MARK BRAINLIEST TO CORRECT ANSWER!!!! WHAT IS THE MID-POINT OF "AB"
A=(-3,3)
B=(-5,-4)
Answers
Answer:
Given : A=(1,2)≡(x
1 ,y
1
) and B=(3,−2)≡(x
2
,y
2
)
Let M=(x,y) be the midpoint of AB
x=(
2
x
1
+x
2
) and y=(
2
y
1
+y
2
)
Then, x=
2
1+3
and y=
2
2−2
⟹x=2 and y=0
∴M=(2,0)
∴ Coordinates of the midpoint of AB is (2,0)
Answer:
WHAT IS THE MID-POINT OF "AB"
A=(-3,3)
B=(-5,-4)
Step-by-step explanation:
Sameer had $600 in his savings account. He wants to have at least $100 in the account
by the end of the year. He withdraws $20 a week for expenses. How many weeks can
Sameer withdraw money? Important! When you multiply or divide by a negative
number, the inequality sign reverses.>+<
amounts in savings - amount per week x number of weeks 2 amount of money at the
end of the year
30 weeks
25 weeks
O
5 weeks
20 weeks
Answers
Answer:
The answer is 25 weeks
Step-by-step explanation:
Let, Number of weeks = x
Now, the required expression is
∴[tex]600-20x\geq 100\\=>-20x\geq -500\\=>20x\leq 500\\x\leq 25[/tex]
Hope you have understood this.....
ask me if you have any confusion.....
if you liked it pls mark it as the brainliest
HELPPPP PLSSS!!! Find the distance between the points (-16, -10) and (6, -10). 20% 16 12 8 4 X -16 -20 -12 -8 -4 4 8 12 20 16 -4 -8 (-16, -10) -12 (6, -10) -16 -20-
Answers
Answer:
10 points away
PLEASE HELP IM SO BEHIND IN SCHOOL ATM
Answers
Answer:
1 rational b/c terminating decimal
2 irrational b/c non-terminating decimal
3 rational b/c non-terminating decimal
4 rational b/c it in an integer, which are part of rational numbers
5 rational b/c non-terminating decimal
6 b) 7.625
Step-by-step explanation:
Its line segment please
Answers
Answer:
A) 29
Step-by-step explanation:
DG = GJ
GJ = DG = 4x + 17
DJ = DG + GJ
11x + 25 = 4x + 17 + 4x + 17
11x + 25 = 4x + 4x + 17 + 17 {Combine like terms}
11x + 25 = 8x + 34
Subtract 25 from both sides
11x = 8x + 34 - 25
11x = 8x + 9
Subtract 8x from both sides
11x - 8x = 9
3x = 9
Divide both sides by 3
x = 9/3
x = 3
DG = 4x + 17
= 4*3 + 17
= 12 + 17
DG = 29
Answe]here g is apoint on dj sdj = dg + gj 11x + 25 = dg + 44x + 14 11x - 44x + 25 - 14 = dg - 33x + 11 = dg
11 x + 25=8x+34
x=3
dg= 4×3+17=29
thank you
-8 is a term.
True
False
Answers
Answer:
true
Step-by-step explanation:
a term is a single mathemathical expression, hence it may be a single number (+ve/-ve)
Answer:
the person above is correct.
Step-by-step explanation:
the answer is right
A human hair is approximately 59 µm in diameter.
Express this diameter in meters.
Answer in units of m.
Answers
Answer:
59000.000 nanometres
Answer:
59μm
Please give branliest
Step-by-step explanation:
1e-6m=1μm
5.9e-5m=59μm