Veda solves the following system of linear equations by eliminations. What is the vale of x in the solution of the system of equations?
Answers
Answer:
x = -1, y = 1
Step-by-step explanation:
6 + 4x - 2y = 0 (1)
-3 - 7y = 10x (2)
From (1)
6 + 4x - 2y = 0 (1)
4x - 2y = -6 (3)
From (2)
-3 - 7y = 10x (2)
10x + 7y = -3 (4)
4x - 2y = -6 (3)
10x + 7y = -3 (4)
Using elimination method
Multiply (3) by 10 and (4) by 4 to eliminate x
40x - 20y = -60
40x + 28y = -12
28y - (-20y) = -12 - (-60)
28y + 20y = -12 + 60
48y = 48
y = 48/48
y = 1
Substitute y = 1 into (3)
4x - 2y = -6 (3)
4x - 2(1) = -6
4x - 2 = -6
4x = -6 + 2
4x = -4
x = -4/4
x = -1
x = -1, y = 1
The value of x in the equation is -1
Answer:
-1
Step-by-step explanation:
Related Questions
Which of the following shows that the sum of two irrational numbers can be irrational?
A. (5+π)+(3-π)
B. √3+√5
C. (3+√5)+(3-√5)
D. (π/3)+(-π/3)
help?
Answers
Given:
The sum of irrational number in the options.
To find:
The option that shows the sum of two irrational numbers can be irrational.
Solution:
In option A,
[tex](5+\pi)+(3-\pi)=5+\pi+3-\pi[/tex]
[tex](5+\pi)+(3-\pi)=5+3[/tex]
[tex](5+\pi)+(3-\pi)=8[/tex]
We know that 8 is a rational number. So, option A is incorrect.
In option B,
[tex]\sqrt{3}+\sqrt{5}[/tex]
Here both numbers are irrational and it cannot be simplified further.
So, [tex]\sqrt{3}+\sqrt{5}[/tex] is an irrational number and option B is correct.
In option C,
[tex](3+\sqrt{5})+(3-\sqrt{5})=3+\sqrt{5}+3-\sqrt{5}[/tex]
[tex](3+\sqrt{5})+(3-\sqrt{5})=3+3[/tex]
[tex](3+\sqrt{5})+(3-\sqrt{5})=6[/tex]
We know that 6 is a rational number. So, option C is incorrect.
In option D,
[tex](\dfrac{\pi}{3})+(-\dfrac{\pi}{3})=\dfrac{\pi}{3}-\dfrac{\pi}{3}[/tex]
[tex](\dfrac{\pi}{3})+(-\dfrac{\pi}{3})=0[/tex]
We know that 0 is a rational number. So, option D is incorrect.
Therefore, the correct option is B.
The probability of getting a head when
flipping an unbiased coin
Answers
Answer:
.5 = 50%
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
So probabilityof getting a head or tail, when an unbiased coin is tossed is = 1
the terms that are opposite each other both across the equals sign and across the division symbol in a proportion is a?
Answers
Answer:
means and extremes
Step-by-step explanation:
Find the next three terms of the sequence.
-4-8, -16, -32, ...
A. -96, -288,-864
B. -64, -128, -256
C. -64,-288, -256
D. -36,-40, -44
Answers
4n + 2 = 6 (1/3n-2/3)
N=???
l give brainiest
Answers
Answer:
N= -3
Step-by-step explanation:
4n+2 = 6(1/3n - 2/3)
4n+2 = 2n - 4
2n +2 = -4
2n = -6
n = -3
Answer:
- 3
Step-by-step explanation:
4n + 2 = 6 ( 1 / 3 n - 2 / 3 )
Divide 2 on both sides,
2n + 1 = 3 ( 1 / 3 n - 2 / 3 )
2n + 1 = 3n / 3 - 6 /3
2n + 1 = n - 2
2n - n = - 2 - 1
n = - 3
18/27=1/3 9/15<4/4 3/4<2/3 5/6>11/12 which is a true statement?
Answers
Answer:
The correct answer us 9/15<4/4
Can I please have a brainliest? I want to rank up :)
PLSS HELPP QHEJJEWJAKWK
What is the vertex of the parabola in the graph?
Answers
Answer:
(-3,-4)
Step-by-step explanation:
The vertex is the minimum or maximum or a parabola.
This is an upward opening parabola, so it has a minimum.
The minimum is (-3,-4)
26 cm
If ABCD is a parallelogram then what is its perimeter?
D
15 cm
A
B
31 cm
82 cm
41 cm
78 cm
Answers
Answer:
82cm
Step-by-step explanation:
26+26+15+15=82
could really use somw help
Answers
Using the right triangle below. What is the name for side AC ?
A) Hypotenuse
B) Adjacent
C) Opposite
D) None of the above
Answers
Answer:
B) Adjacent
Step-by-step explanation:
The hypotenuse will ALWAYS be designated as the longest side in a right triangle.
Pretend that the angle (the one with the round line) is an eyeball that is looking outwards. The eye is looking out at side BC. That means that line BC is opposite of the angle.
This leaves one side left: the adjacent side. The adjacent side is the side next to the angle. But it is the side that is NOT the hypotenuse.
66.21 was rounded to 2dp. what is the lower bound?
Answers
Answer:
the answer is 66.205
Step-by-step explanation:
basically you look at the place value so
66.21 is basically the same as 66.210 then you look at the lowest number that can round UP to 66.210 which would be out of 1 to 9 would be 5 so the smallest number that can round up to 66.210 is 66.205 hope this helped :D
Help me please I’m really struggling
Answers
Answer:
Step-by-step explanation:
Find the expression different from the others. Do this by showing that the other four are equivalent to each other using the properties of exponents. (4 points)
A)2^4x+2
B)4•16^x
C)2+4^4x
D)2^2 • 4^x (over) 4^-x
E)4^2x+1
Answers
Answer:
C) 2+4^4x
Step-by-step explanation:
A) 2^(4x+2) = 2^4x • 2² = 16^x • 4
B) 4 • 16^x = 16^x • 4 (already done)
D) 2^2 • 4^x (over) 4^-x
= 4 • 4^x • 4^x = 16^x • 4
E) 4^(2x+1) = 4^2x • 4¹ = 16^x • 4
Mrs. Smith paid $125 to have her hair colored and cut. If she tips her hairdresser 15% of her bill, how much was the tip? (pls include the steps)
Answers
Answer:
$18.75
Step-by-step explanation:
15% = 15/100
125 × 15/100
=1875/100
=18.75
Find the values of x and y.
Answers
Answer:
x = 24
y = 59
Step-by-step explanation:
To solve for x, we can say that;
(5x) + (2x + 12) = 180
7x + 12 = 180
7x = 180 - 12
7x = 168
x = 168 / 7
x = 24
To solve fore y, we can say that;
(3y) + (y - 56) = 180
4y - 56 = 180
4y = 180 + 56
4y = 236
y = 236 / 4
y = 59
Hope this helps!
which expression is not equal to the number 0?
Answers
Answer:
It's 6 - (-6)
Step-by-step explanation:
Two negatives make a positive so instead of subtracting you're now adding.
hope this helps youu
Examine the pattern below and give the next three terms in the sequence.the pattern 1,3,4,7,11,18,29
Answers
Answer:
47, 76, 123
Step-by-step explanation:
Fibonacci Sequence
Answer:
47 , 76 , 123
Step-by-step explanation:
3rd term = 1st term + 2nd term = 1 + 3 = 4
4th term = 2nd term + 3rd term = 3 + 4 = 7
Next three terms:
8th term = 18 +29 = 47
9th term = 29 + 47 = 76
10th term = 47 + 76 = 123
What is the fraction equivalent of -3.4?
Answers
Answer:
-17/5 as an IMPROPER FRACTION
[tex]-3\frac{2}{5}[/tex] as a MIXED FRACTION
1. Find measure of angle GBC
A. 55°
B. 125°
C. 45°
D. 60°
(Show work)
Answers
Answer:
A. 55°
Step-by-step explanation:
So the line goes through two angles, 125° and 55°
Lets check, does the angle look larger than 90°
Remember, 90° mean the line is perpendicular, or goes straight up.
I see that it is not. The angle that is less than 90° (55°) is correct.
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Find the missing side length, and enter your answer in the box below. If necessary, round your answer to 2 decimal places. 2
Answers
Answer:
Length of missing side is 177.5
Step-by-step explanation:
sum of all angles of right triangle is 180 °
length of missing side = c1.5° + 2° + c = 180°
combine like terms
2.5 ° + c = 180°
Subtract 2.5 from each side
2.5 ° - 2.5° + c = 180° - 2.5°
c = 177.5
please help me,i am in struck.
Answers
Answer:
Step-by-step explanation:
perimeter of rectangle=2(length + breadth)
=2(2p+q+p)
=2(3p+q)
=2*3p+2*q
=6p+2q cm
Step-by-step explanation:
Hey there!
From the figure;
Length (l) = 2p + q cm
Base (b) = pcm
Now;
Perimeter (p) = 2(l+b)
P = [2(2p+q) + p]
or, P = 2(3p+q)
or, P = 6p + 2qcm.
Therefore, perimeter (p) = 6p+2q cm.
Hope it helps!
A triangle has sides with lengths of 8 centimeters, 15 centimeters, and 17 centimeters. Is it a right triangle?
Answers
Answer:
Yes it is!
Step-by-step explanation:
If you want to know whether it is, use the pytheoream theory. a2+b2=c2
a is the shortest side, b is the second longest and c is the longest.
In this case, the equation will be:
8 sq + 15 sq = 17 sq
64 + 225 = 289
= It is a right-angled triangle!
Simplify. x 0 yz -3
Simplify. x 0 yz -3
Answers
Answer:
y / z^3
Step-by-step explanation:
x^0 is 1 because anything to the zero power is 1
1 *y z^-3
We know a^-b = 1/a^b
y / z^3
Answer:
[tex] \small \sf \frac{y}{z {}^{ 3}} [/tex]
Step-by-step explanation:
x⁰yz-³
Any non expression raised to power of 0 equals 1.[tex] \small \sf \: 1yz {}^{ - 3} [/tex]
Express with positive exponents using [tex] \small \sf \: a {}^{ - n} = \frac{1}{a^n}[/tex]1y +[tex] \small \sf \frac{1}{ z {}^{ 3}} [/tex]
[tex] \small \sf \frac{y}{z {}^{ 3} }[/tex]
Sketch the graph of y = negative 2 x squared + x + 1 using your graphing calculator. What are the x-intercepts of this graph? a. (1, 0) and (-0.5, 0) c. There are no x-intercepts b. (-2.5, 0) and (-2, 0) d. (-1.5, 0) and (-0.5, 0) Please select the best answer from the choices provided A B C D
Answers
y= -2x²+ x + 1
i think it's A ?
Answer:
a
Step-by-step explanation:
eng. 2022
Can somebody plz help answer these probability questions correctly (only if u know how to do it ofc lol) thanks! :3
WILL MARK BRAINLIEST WHOEVER CAN ANSWER THEM :DDDD!
Answers
Answer:
1/8
1/2
3/8
3/8
1
3/8
Value of x? Complementary angles, easy.
Answers
Answer:
14 = x
Hope that this helps!
Which parent function is f(x) = |x|?
A. The quadratic parent function
B. The absolute value parent function
C. The linear parent function
D. An exponential parent function
Answers
Answer:
it B
Step-by-step explanation:
xhdbsxjnysnkh rxdhwbejdxigj
What is the domain and range of this graph?
Answers
Answer:
not 100% sure, but i would put
Domain: all real numbers
Range: y >= 0
Step-by-step explanation:
write 4 as a power of 2
Answers
Answer:
4 = 2²
Step-by-step explanation:
Multiply 2 by itself till 4
Simple because you only do it once
2 * 2 = 4
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
.......
What is the area of the triangle?
Answers
Answer:
A = 48 in²
Step-by-step explanation:
The area (A) of the triangle is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )
Here b = 24 and h = 4 , then
A = [tex]\frac{1}{2}[/tex] × 24 × 4 = 12 × 4 = 48 in²
Answer:
A = 48 in.^2
Step-by-step explanation:
Area of triangle = (Base * height) / 2
Area of triangle = (24*4)/2
Area of triangle = 48 in.^2