This system can be solved for x by elimination.
[tex]6x - 3y = 15\\ x + 3y = -8\\\\7x = 7\\\\x = 1[/tex]
Now, with what we found for x, we plug it back into one of the equations to solve for y. I chose the second one.
[tex]1 + 3y = -8\\\\3y = -9\\\\y = -3[/tex]
Now, we have our solution.
[tex](1, -3)[/tex]
Answer:
(1,-3)
Step-by-step explanation:
6x-3y=15
substitute x with 1 and y with -3
6(1)-3(-3)=15
6+9=15 so that's true
x+3y=-8
again substitute x with 1 and y with -3
(1)+3(-3)= -8
1-9=-8
-8=-8 and that's true
hope i helped
There is a bag of marbles that has 40% blue marbles, 10% red marbles, 30% green marbles, and 20% black marbles. What is the ratio of red marbles to black marbles?
Answer:
1/2 :D?
Step-by-step explanation:
You just need to divide the percentage of red marbles to black marbles.
10% / 20% = 1/2 :D
Please choose the **CORRECT** answer, and you'll recieve brainliest.
Answers shown below:
Answer
x=6, y=21/2
Explanation
The 86 degrees is just to make you confused.
Since this is a congruent triangle, you can just follow these steps.
Line AB: To get from 4 to 6, you multiply by 1.5.
Line BC: Divide 9 by 1.5 to get x. 9 divided by 1.5 is 6.
Line AC: Multiply 7 by 1.5 to get y. 7 times 1.5 is 10.5.
So the correct answer is the first choice; x=6, y=21/2 (this is also 10.5).
ill give you a lot of points!!!
Answer:
thank you for points and your kindness
Step-by-step explanation:
Which is the slope of the line represented by the equation y=-1/2x+1/4?
Answer: -1/2
Step-by-step explanation:
How many solutions does the following equation have?
LaTeX: 4\left(x-5\right)=4x+104 ( x − 5 ) = 4 x + 10
Group of answer choices
No solution
One solution
Infinitely many solutions
Two solutions
Answer:
no solution
Step-by-step explanation:
hi friends anyone? here?
Heylo! :D
How are ya? :)
Slope is -4, and (9,5) is on the line.
Answer:
y=-4x+41
Step-by-step explanation:
y=mx+b
5=-4(9)+b ---> b=41
y=-4x+41
Answer this problem ....
Answer: since JG is the long line and JL is half of that line, 32/2=16
so JL=16
Answer:
JL=16
hope this help <3
please help. answer my last question
What is your last question?
HELPP MEE I will get five stars I will give brainly and I will give thanks
this is 30 points
Answer:
3 galllon one is $8 because it is the only thing that you can multiply by 3 to get 24
The 4 gallon one is $9 because it is the only number that you can multiply by 4 to get 36
Step-by-step explanation:
Answer:
4 gal = $9 per gal and 3 gal = $8 per gal
Step-by-step explanation:
you divide the price by the gallon
which means sciencegirl0409 is correct.
if g(x) = -3x^2 - 5x + 5, calculate g(-3).
Answer:
g(-3) = -7
Step-by-step explanation:
[tex]g(x) = -3x^2 - 5x + 5\\\\g(-3)=-3(-3)^{2} -5(-3)+5\\\\g(-3)= -27+15+5\\\\g(-3)=-7[/tex]
Answer:
G(-3) = -7
Step-by-step explanation:
Plug the equation into a TI-84 calc into y= and then press 2nd graph which will bring up the table, then scroll down to x=-3
The diameter of a cartwheel is 2.1 m. Find the distance traveled when it completes 100 revolutions.
A. 105
B. 6.524
C. 659.4
D. 65.94
(SHOW WORK FOR A BRAINLIEST)
Answer:
Circumference of wheel=πd
Circumference of wheel =22*2.1/7
Circumference of wheel =6.6 Mrs
It coveres 6.6mtrs in one round
Then in 100 rounds it will take 6.6*100=660mtrs
I think that it
enter you answer like this :42
MARKING BRAINLIST!!!
Answer:
33
Explanation:
replace y with 18 and solve.
18 = 2/3x - 4
add 4 to both sides and divide by 2/3
A triangle with a base of 4 centimeters and height of 3.5 centimeters. She found the area of the enlarged triangle. Her work is shown below. One-half (4) (3.5) (5) = 35 centimeters squared What was Beth's error? She should have divided One-half (4) (3.5) by 5. She should have divided One-half (4) (3.5) by 5 squared. She should have multiplied (4) (3.5) by 5. She should have multiplied One-half (4) (3.5) by 5 squared.
Answer: She should have multiplied One-half (4) (3.5) by 5 squared.
Step-by-step explanation:
The calculation of Beth is wrong. Since Beth enlarged the triangle below by a scale of 5, she should find the area of the traingle and then multiply by 5².
This will be:
= 1/2 × 4 × 3.5 × 5²
= 2 × 3.5 × 25
= 175cm²
Answer:
d
Step-by-step explanation:
What’s the equation
2 + 3y + 9z = 4
- x + 8y - 6z = 4
x + 3y +3z = 10
Answer:
x = 62 /9 y = 11 /9 z = − 5 /27
Step-by-step explanation:
2 times the difference of t and 11
Answer:
2(t-11)
Step-by-step explanation:
Resuelve las ecuaciones a+(-8/3)=23, 2y+(-5/4)=0,75, 18*=1/3, m-5=2/7
AYUDA POR FAVOR
Answer:
a bueno bro pa saber.....
how do you solve w=3m - 2p
Mr.Williams, a parking lot owner, sold 20% of his lot to his neighbor. Later that year he sold 20% of the remainder of his lot to another neighbor. What percent of Mr.Williams' original parking lot does he still own?
Answer: He still owns 64% of the Mr.Williams' original parking.
Step-by-step explanation:
Let x = Area of the original parking plot.
First he sold 20% of his lot to neighbor .
Sold plot = 20% of x = 0.20x [Replace 'of' by '×' and divide number by 100 to remove %]
Reminder= x-0.20x= (1-0.20)x=0.80x
Again he sold 20% of the remainder .
Sold plot = 20% of (0.80x) = 0.20 (0.80x)
= 0.16x
Remainder plot = 0.80x-0.16x= 0.64x
Percent of Mr.Williams' original parking lot does he still own = [tex]\dfrac{0.64x}{x}\times100=64\%[/tex]
Hence, he still owns 64% of the Mr.Williams' original parking.
Yuri purchased 8 trees to have planted at his house. The store charged a delivery fee of $5 per tree.
The total cost of the trees including the delivery was $168.
How much did each tree cost?
Enter your answer in the box.
Answer:
The answer would be 16, because the delivery of the 8 trees costed 40, and the overall cost was 168, so you would subtract 40 for the delivery, and divide 128 by 8.
Step-by-step explanation:
Answer:
128
Step-by-step explanation:
If the delivery was 168 in total the fee was also in there. 8x5=40 so thats the fee. Subtract that from 168 which is 128. So the cost of the trees total was 128 but the total cost of the fee is 168. Hope this helped.
help me plzzzzzzzzzzzzzz
Which number line correctly shows 0.8 +0.3?
Answer:
the second diagram is the answer
Describe the graph of y = -|x + 4| - 5.
Answer:
6
Step-by-step explanation:
The graph of the absolute value function is an inverted "V" such that the vertex is at (-4, -5) and opens downwards.
How to calculate the modular function?
Among modular functions, f(x) = |x| has its domain given by the real numbers and its range given by the positive real numbers. This is because the modular function will make |-y| = -(-y) = y given every negative y-value.
Given modular function is :
y = -|x + 4| - 5.
Hence, to plot the graph of a modular function, we need to determine some values for x and then apply them to the function f(x) = | x |.
Learn more about absolute value functions:
brainly.com/question/3381225
#SPJ1
What is the slope of the line represented by
y= 12+ 1/2x ?
Answer:
1/2
Step-by-step explanation:
Answer:
1/2 i think
Step-by-step explanation:
hope this helps :))
Find the value of x
Answer:
x = 70
y = 110
z = 30
Step-by-step explanation:
all triangles add up to 180
30 + 80 = 110
180 - 110 = 70
x = 70
30 + 40 = 70
70 + 80 = 150
180 - 150 = 30
z = 30
40 + 30 = 70
180 - 70 = 110
y = 110
HELP ME PLZ 10 POINTS !!!!!
Which statements best describe the difference between a periodic interest rate and an APR? (4 points)
a
A periodic interest rate is the amount of interest someone will pay for a specific time frame. An APR is the amount of interest someone will pay each year.
b
A periodic interest rate is the amount of interest someone will pay each year. An APR is the amount of interest someone will pay for a specific time frame.
c
A periodic interest rate is interest that is applied to an account at the end of a specific time frame. An APR is interest that is applied to an account once at the end of the year.
d
A periodic interest rate is interest that is applied to an account once at the end of the year. An APR is interest that is applied to an account at the end of a specific time frame.
ANSWER FAST
-3c + 4d + 8c
Answer:
9c
Add and subtract
A contractor isn't darling carpet in the new house direct angular living room has an area of 96 ft.² and the link is 12 feet less than three times the width of the room what are the dimensions of the room
Answer:
The dimensions of the room is 8 feet × 12 feet.
Step-by-step explanation:
The area of the house, A = 96 ft²
The link is 12 feet less than three times the width of the room .
Let the width of the room is x.
Length = 3x-12 ...(1)
The area of a rectangular room is given by :
A = lb
96 = (3x-12)x
[tex]3x^2-12x-96=0\\\\x^2-4x-32=0\\\\x^2-8x+4x-32=0\\\\x(x-8)+4(x-8)\\\\(x+4)(x-8)=0\\\\x=-4,8[/tex]
Neglecting negative value, width = 8 feet
Put x = 8 in equation (1)
Length = 3(8) - 12
= 12 feet
Hence, the dimensions of the room is 8 feet × 12 feet.
20 points + Brainlest
Determine if the following system of equations has no solutions, infinitely many solutions or exactly one solution.
-x+y=1
-2x -y=-4
Answer:
One solution:(1,2)
Step-by-step explanation:
y = x + 1
/Plug this in for variable y in equation [2]
-2x - (x +1) = -4
-3x = -3
Solve equation [2] for the variable x
3x = 3
x = 1
By now we know this much :
x = 1
y = x+1
Use the x value to solve for y
y = (1)+1 = 2
Hope this helps :D please mark brainliest if correct