Answers
Answer:
He did an error because he multiplied equation 2 wrongly.
The correct multiplication should have been:
-6x + 9y = 6 Multiply equation by 2 by 3
Step-by-step explanation:
Given the system of equations
3x-5y=4
-2x+3y=2
This is what student solved
6x - 10y = 8 Multiply equation 1 by 2
-6x + 3y = 6 Multiply equation by 2 by 3
_________
-7y = 14
y = -2
He did an error because he multiplied the equation 2 wrongly.
The correct multiplication should have been:
-6x + 9y = 6 Multiply equation by 2 by 3
NOW, HERE IS THE CORRECT VERSION
6x - 10y = 8 Multiply equation 1 by 2
-6x + 6y = 6 Multiply equation by 2 by 3
_________
-4y = 14
y = -2/7
Related Questions
A cylinder has height 20cm.
The area of the circular cross section is 74cm.
Work out the volume of this cylinder
Answers
Answer:
volume= l*b*h
So, Volume=area*height
= 74*20
=1480cm³
What is the range of fx) = 3^x
A. All positive real numbers
B. All real numbers greater than 3
C. All real numbers
D. All real numbers greater than or equal to 3
Answers
Answer:
d brainest plz
Step-by-step explanation:
MATH AGAIN HELP PLS!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
CAN SOMEONE PLEASE HELP ME ASAP ILL MARK BRAINLIST!!!!!
Answers
Answer:
a or b
Step-by-step explanation:
Answer:
B. 30
Step-by-step explanation:
3/4 = .75
120 * .75 = 90
Of those 90 students 1/3 wore sandals.
1/3 = approximately .33
90 * .33 = 29.7
Therefore, around 30 students wore jeans and sandals.
whats the answer giving brainliest:)(::::::::::::::::::::::::::::::::::;;;
Answers
Answer:
it is definately b
Step-by-step explanation:
i got u 100
Answer:
B. Yes, She did the problem correctly
Step-by-step explanation:
what is 457.894 to 2 deimal places
Answers
Answer:
228.947
Step-by-step explanation:
Answer:
457.894
Step-by-step explanation:
"What is 457.894 rounded to 2 decimal places?" is the same as asking, "What is 457.894 rounded to two decimal points?" or "How to round 457.894 to two decimal places."
The main point is that you want to round 457.894 to two digits or places after the decimal point. Thus, we want to eliminate the last digit in 457.894. To eliminate the last digit in 457.894, we use the following Two Decimal Places Rules to get the answer:
Two Decimal Places Rule #1: If the last digit in 457.894 is less than 5, then remove the last digit.
Two Decimal Places Rule #2: If the last digit in 457.894 is 5 or more and the second to the last digit in 457.894 is less than 9, then remove the last digit and add 1 to the second to the last digit.
Two Decimal Places Rule #3: If the last digit in 457.894 is 5 or more and the second to the last digit in 457.894 is 9, and the third to the last digit is less than 9, then remove the last digit, make the second to last digit 0, and add 1 to the number to the third to the last digit.
Two Decimal Places Rule #4: If the last digit in 457.894 is 5 or more and the second to the last digit is 9, and the third to the last digit is 9, then add 1 to the number on the left side of the decimal point and make the right side of the decimal point 00.
When rounding 457.894 to two decimal places we use Two Decimal Places Rule #1. Therefore, the answer to "What is 457.894 rounded to 2 decimal places?" is:
457.89Which of the following is equivalent to the complex number i^16?
Answers
Answer:
A
Step-by-step explanation
i = [tex]\sqrt{-1}[/tex]
i² = ([tex]\sqrt{-1}[/tex] )² = - 1
i³ = i² × i = - 1 × i = - i
[tex]i^{4}[/tex] = i² × i² = - 1 × - 1 = 1 , then
[tex]i^{16}[/tex]
= [tex](i^4)^{4}[/tex]
= [tex](1)^{4}[/tex]
= 1
In which pair of triangles is Triangle E F G is congruent to triangle R T S?
For triangles G E F and S R T, sides E G and S T are congruent, sides G F and S R are congruent, and sides E F and R T are congruent.
For triangles G F E and S T R, sides E G and T R are congruent, sides G F and T S are congruent, and sides E F and S R are congruent.
For triangles G F E and R S T, sides E G and R S are congruent, sides G F and R T are congruent, and sides E F and T S are congruent.
For triangles E G F and T S R, sides E G And S R are congruent, sides G F and S T are congruent, and sides E F and T R are congruent.
Answers
Answer:
Step-by-step explanation:Last pair of triangles represent congruence.
Step-by-step explanation:
If , it can be deducted the following:
Also,
Notice that the last imag shows the correct congruence, because it shows the congruence between sides as we said before.
Answer:
D
Step-by-step explanation:
I am doing the test
What is the decimal expansion of 3/11
Answers
Answer:
It is 300 + 10 + 1.
Step-by-step explanation:
Answer:
.27
Step-by-step explanation:
just divide 3/11
15:59:26
Which inequality has -12 in its solution set?
B
D
X+6<-8
H10
X+55-4
A
B
C
Answers
Answer:
D
Step-by-step explanation: I just took the quiz.
Please answer correctly !!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!
Answers
Answer:
you would need to use 2 differant types of tools the first one to measure the air pressure whitch would be a barometer and the second tool would be a thermometer.
A number is multiplied by 4, then 5 is added. The result is 21. Write an equation to represent this situation.
Answers
Answer:
4 x 4 + 5= 21
Step-by-step explanation:
Solve
6(2x- 5)= 15x+3
Answers
Answer:
x = -11Step-by-step explanation:
6(2x- 5)= 15x+3 expand
12x - 30 = 15x + 3 combine similar terms
12x - 15x = 30 + 3 simplify
-3x = 33 divide -3 both sides
x = 33 / -3 simplify
x = -11
PLEASE HELP ME :(
What is the length of the midsegment AB?
Answers
31 31- I'm just dragging this out cause the thing wants me to type more
An angle pair that is on the exterior of two lines but on opposite sides of the transversal.
Answers
PLEASE PLEASE PLEASE HELP MEE!
10 POINTS
Answers
2. 8
3. 36
all you have to do to solve is sub y for the number like for number one you write
4 = x/4 because they said y = 4
and solve from there
also this question is worth 5 points for each person which is the lowest amount of points you can give someone in brainly so
Answer:
16,8,36 respectivly
Step-by-step explanation:
In an isosceles triangle, the measure of a base angle is (2x+5)° . At the vertex the measure of an exterior angle is (5x-3)°
There will be an extention at the vertex
Answers
Answer:51.14
Step-by-step explanation:since its an isosceles triangle all interior angles are gonna be equal the exterior angle plus interior angle is will be kept equal to 360
2x+5+5x-3=360
7x+2=360
7x=358
x=51.14
The measure of each angle is 31, 31 and vertex angle is 118.
What is Exterior angle Property?If a triangle side is created, the outside angle that results is equal to the product of the two opposite internal angles.
Given:
Base angle = (2x+ 5) and Vertex = (5x- 3)
So, We know that the exterior angle is equal to sum of opposite interior angle
5x- 3 = 2x+ 5 + 2x + 5
5x - 3= 4x + 10
x= 13
Thus, Each angle measure 2(13)+ 5 = 31 and
third angle = 180 - (5x- 3) = 180- 62 = 118
Hence, the measure of each angle is 31, 31 and vertex angle is 118.
Learn more about Exterior angle Property here:
https://brainly.com/question/19562895
#SPJ2
PLEASE LOOKS AT PHOTO it’s due tonight i’m struggling badly :(
Answers
7^2-3^2=40
Answer:
y = 6.32
Step-by-step explanation:
7^2-3^2= 40
hope it helped
Jeremy bakes two pans of brownies that are the same size. One pan has nuts in it and the other pan does not. He cuts the pan with nuts into 8 equal pieces. He cuts the pan without nuts into 16 equal pieces. His friends eat 2 brownies with nuts and 3 brownies without nuts. Did they eat more of the brownies with nuts or without nuts?
Answers
Answer:
The answer is "[tex]\frac{2}{8} > \frac{3}{16}[/tex] So, they eat more brownies with nuts".
Step-by-step explanation:
In the given question, the two browny pans of equal size are baked by Jeremy. There is indeed a saucepan with nuts in it, not the other pan. He split the pot into eight equal chunks with nuts. He slices the pan into 16 equal parts without nuts. His mates eat 2 nuts brownies and three nut-free brownies. They eat more nuts and brownies [tex]\frac{2}{8} > \frac{3}{16}[/tex] eat more.
which equation represents the line shown on the
Answers
Answer:
A
Step-by-step explanation:
y-int = -2
so the line should cross (0, -2)
Rise over run is 2/5 so go up 2, over 5 and put your dot etc...
What is two over four divided by one over two
Answers
Answer:
0.25
Step-by-step explanation:
Answer:
0.25
Step-by-step explanation:
Zion Williamson is hoping to be the most dominating freshman that Duke has ever seen on the basketball court. In the first 3 games of the season he has scored 28, 27, and 33 points. To be named one of the best, he has to average at least 36 points a game through 4 games. How many points, p, does he have to score in the 4th game to be named one of the best?
A. ≥ 88
B. ≥ 36
C.
D. > 88
Solve:
please help me
Answers
Answer:
greater or equal to 56
Step-by-step explanation:
To have an average of 36 points through 4 games, Zion must score 36x4 (144) points. The first three games added together is 28 + 27 + 33 = 88. 144 - 88 = 56.
Brainlyst if u are right
Answers
Answer:
D. (2, 7)Step-by-step explanation:
The solution is the coordinates of the point (p,n) of intercept of lines described by given equations.
J has a loan of $42,350. This loan has a simple interest rate of 8% per year. What is the amount
of interest that will be charged on this loan at the end of two years?
Answers
Answer:
6776
Step-by-step explanation:
8℅ = 0.08
0.08 x 42350 = 3388
3388 x 2 = 6776
writing equation line
Answers
Answer:
-----------------------------
^ ^
life Death
Please help!!! thank you!!! *will give brainliest*
Answers
Answer: Choice C
[tex]y = x^2+2, \ x \ge 0[/tex]
=============================================
Work Shown:
[tex]f(x) = \sqrt{x-2}\\\\y = \sqrt{x-2}\\\\x = \sqrt{y-2} \ \text{ swap x and y}\\\\x^2 = y-2 \ \text{ square both sides}\\\\y = x^2+2\\\\f^{-1}(x) = x^2+2\\\\[/tex]
Since the range of f(x) is [tex]y \ge 0[/tex] this means the domain of the inverse will be [tex]x \ge 0[/tex]
The domain and range swap when you go from the original function to the inverse, or vice versa (due to x and y swapping)
So we must state the inverse is [tex]y = x^2+2 , \ x \ge 0[/tex]
Can someone please help me graph this
Answers
The diagram represents an 11 cm by 6 cm rectangle.
11 cm
6 cm
Calculate the perimeter of the rectangle.
Answers
You buy 80 of your favorite songs from a Web site that charges $0.99 for each song What is the cost of 80 songs?
Answers
Answer:
$79.20
Step-by-step explanation:
0.99 x 80 = 79.2
Hope this helps. (:
If Lauren reads for 30 minutes in 6 minutes in a 240 page novel,what is the constant of proportionally
Answers
Answer:
The Constant of Proportionality is 5 pages per minute.
Step-by-step explanation:
P.S Can I have brainliest?
Answer:
Lauren reads 5 pages per minute.
Step-by-step explanation:
Just divide 30 by 6 to get your answer