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Related Questions
x - y = -2
4x - y = 4
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[tex] \begin{cases} x - y = - 2 \\ 4x - y = 4 \end{cases}[/tex]
Use the elimination method as it is faster. We have to eliminate the y-term. (You can eliminate the x-term but it takes longer than eliminating y-term.)Simply multiply the negative one in one of the equations.
[tex] \begin{cases} - x + y = 2 \\ 4x - y = 4 \end{cases}[/tex]
We can finally eliminate the y-term by adding both equations.
[tex]( - x + 4x) + (y - y) = 2 + 4 \\ 3x + 0 = 6 \\ 3x = 6 \\ x = \frac{ 6 }{3} \longrightarrow \frac{ \cancel{6}}{ \cancel{3}} = 2 \\ x = 2[/tex]
Substitute the value of x in any given equations. I will substitute in the first equation.[tex]x - y = - 2 \\ 2 - y = - 2 \\ 2 + 2 = y \\ 4 = y[/tex]
Check the answer by substituting the value of x and y in both equations.First Equation
[tex]x - y = - 2 \\ 2 - 4 = - 2 \\ - 2 = - 2 \longrightarrow \sf{true} \: \: \green{ \checkmark}[/tex]
Second Equation
[tex]4x - y = 4 \\ 4(2) - 4 = 4 \\ 8 - 4 = 4 \\ 4 = 4 \longrightarrow \sf{true} \: \: \green{ \checkmark}[/tex]
Hence, the solution is (2,4).
Answer[tex] \begin{cases} x = 2 \\ y = 4 \end{cases}[/tex]
Coordinate Form
[tex](2,4)[/tex]
Whoever completes this will get brainliest!!! Needed ASAP!
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Answer:
1. slope m = 1; y-intercept b = 3
2. slope m = ; y-intercept b = 4
3. slope m = 3; y-intercept b = 1
4. slope m = [tex]\frac{1}{2}[/tex]; y-intercept b = 1
5. the slope demonstrates the cost of toppings PER topping and how the price increases per topping. the y-intercept is the starting cost WITHOUT toppings (when toppings = 0) and the slope increases the price starting with the y-intercept because it is the initial cost. the graph is attached
jeffys law whats 2+2
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Answer:
b
Step-by-step explanation:
(4 + 2n) + (513 + 2).
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Answer:
2n + 519
Step-by-step explanation:
Hope this helps! :)
Good luck♥
x 2x=27 when y=9 and z=2
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Solve for the inequality x / 3 < -7
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Answer:
[tex]x < - 21[/tex]
Step-by-step explanation:
1. Multiply both sides by 3.
[tex]x < - 7 \times 3[/tex]
2. Simplify 3 × 7 to 21.
[tex]x < - 21[/tex]
therefor, the answer is x < -21
If y varies directly with x, and y = 72 when x = -8, what is y when x = -6
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Answer:
y=72
Step-by-step explanation:
the step by step is in the attachment above
Find the solution to the system: x=2y-7 and 4x+y=71
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8y-28+y=71
9y=71+28
y=99/9
So y=11
Again putting value of y in first equation
x=2*11-7
x=22-7
x=15
So value if x is 15 and y is 11
A price is increased by 5% and is now £756.
Work out the original price.
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Answer:
£720
Step-by-step explanation:
100+5 = 105
105% = 756
divide both sides by 105 to find 1%
1% = 7.2
multiply both sides by 100 to find 100%
100% = 720
756/105 X 100 = 720
Right answer gets brainlist
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Answer:
153
Step-by-step explanation:
Calculate the area of each side first, then add it all up
Width x height = area of square/rectangle
1/2 x width x height = area of a traingle
Elliot was trying to factor 6z^2-18. He found the greatest common factor of these terms was 6.
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Answer:
6(z^2-3)
Step-by-step explanation:
6z^2-18=6(z^2-3)
please help, ill give you brainly :)
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2 the answer is c
3 the answer is d
4 the answer is a
5 the answer is b
Which factors composed the least common denominator of for this difference?
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Answer:
-2x, (x+6), and (x-2)
I got this right on edmentum.
Step-by-step explanation:
Volume of composite figures
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Answer:
Finding the volume of these composite figures involves finding the volume of each shape, calculate the volume of each shape,
Step-by-step explanation:
then adding the volume of these different shapes together. the volume of two different figures is calculated with step by step directions.
What is 4/9 x 5/7 x 1/2
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Answer:
0.16
Step-by-step explanation:
4*5*1=20
9*7*2=126
20/126=10/63
Answer:
10/63
Step-by-step explanation:
First, let's solve 4/9 * 5/7. Multiply the numerator first- 4*5=20. The denominator is 9*7=63. So, this equals 20/63. Now we need to find 20/63 * 1/2. We can cancel out the 2 on the denominator and divide 20 on the numerator by 2. So, you get 10/63 * 1/1, which is 10/63.
Given that f(x)= x^2-3/2 a)find f(3) b) find f
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Answer:
Step-by-step explanation:
f(3)=3^2-3/2=3*3-3/2=9-3/2=18/2-3/2=15/2
Help please need the answer before 2:00
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Answer:
y = (10/7)x
Step-by-step explanation:
Ok so this is a hard question but I believe the answer is y = (10/7)x
needed the correct answer
20 points
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Answer:
30
Step-by-step explanation:
pretty sure it is that
10-x=5
What is X???I need help
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10-x =5
-x= 5-10
-x = -5
x= 5
Answer : x=5Answer:
what the other person said
Step-by-step explanation:
Write the equation of line of the line that passes through the point (5, 6) and a slope of 2
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Can someone help me please
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Answer:55
Step-by-step explanation:
Which of the following functions represents an arithmetic sequence?
1. f(n)=3n^2−4
2.f(n)=3n−4
3.f(n)=3^n−4
4.f(n)=3^n−4^n
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Answer:
Option (2)
Step-by-step explanation:
Explicit formula of an arithmetic sequence is always in the linear form.
A(n) = a + (n - 1)d
Here A(n) = nth term of the sequence
a = first term
n = number of term
d = common difference
Formula doesn't have the terms with the exponent.
Therefore, from the given options, expression that represents an arithmetic sequence will be,
f(n) = 3n - 4
Option (2) will be the correct option.
last question please som1
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Answer:
898/8×41=4602.5
Step-by-step explanation:
I HOPE THIS WILL HELP YOU KEEP WORK HARD FOR STUDIES
Use the distributive property to find the equivalent expression.
4(2 + 3v) = +
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Answer:
8+12v
Step-by-step explanation:
The table represents a linear function. The rate of change between the points (–5, 10) and (–4, 5) is –5. What is the rate of change between the points (–3, 0) and (–2, –5)?
x
y
–5
10
–4
5
–3
0
–2
–5
–5
Negative StartFraction 1 Over 5 EndFraction
One-fifth
5
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Answer:
use the slope formula y2-y1/x2-x1 and you should get -5-0/-2+3= -5 which means the rate of change should be 5
Answer:
5
Step-by-step explanation:
Explain the slope and the y-intercept
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Pls help its my last question?!?!
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Answer:
x = -11
m<B = -43
m<C = -22
Step-by-step explanation:
To solve for x, solve (3x-10) + (2x) + 65 to get 5x+55. Simplify to 5x = -55. This can simplify further to x = -11. Insert -11 as x into the angles.
I hope this is correct and helps!
A house is losing value at a rate of 5.4% per year. In 2009, the house was worth $331,000. Find the value of the house in 2021.
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Answer:
$169803
Step-by-step explanation:
Given data
rate of decrease = 5.4%
time = 2009-2021= 12years
P= $331,000
Let us apply the compound interest formula
A=P(1-r)^t----------------note the minus sign because this is a decrease
A= 331000(1-0.054)^12
A= 331000(0.946)^12
A= 331000*0.513
A=$169803
Hence the value in 2021 is $169803
Which of the triangles are right triangles?
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Step-by-step explanation:
1 is a right triangle I know this because a right triangle is a triangle which one of the angles is a 90 degree angle
Answer:
Triangles 1,2,3, and 4 are all right triangles
At a pie cook-off, the judges ate 512 of Mary’s pie and 916 of Jerome’s pie.
The pies were the same size.
Choose Yes or No to tell if the statement about the two pies is true.
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Answer:
No
Step-by-step explanation:
I think you meant to put 5/12 ad 9/16 but in any case, even if it were 51/2 and 91/6 or anything else, the answer would be no
