Solve the system by substitution.
-2x – 4y = -18
x=y
Answers
Hope this help you with this problem!
Related Questions
Please help
Charles correctly answered 23 questions on a test receiving a grade of 92% how many questions where on the test
Answers
Answer:
25
Step-by-step explanation:
Cross multiply
23/x=92/100
x=25
There were approximately 25 questions on the test.
To determine the number of questions on the test, we can set up a proportion based on Charles' correct answers and the grade received.
Let x be the total number of questions on the test.
We can set up the proportion:
23 (Charles' correct answers) / x (total number of questions) = 92% (grade as a decimal: 0.92)
This can be written as:
23 / x = 0.92
To solve for x, we can multiply both sides of the equation by x:
23 = 0.92 * x
Dividing both sides by 0.92:
23 / 0.92 = x
x ≈ 25
Therefore, there were approximately 25 questions on the test.
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Write an equation of the line below.
Answers
Answer:
y = -x
Step-by-step explanation:
This has a negative slope. :)
Answer:
y=-6/8x+0.
Step-by-step explanation:
You go up 6 from the point, 8 to the left, getting you to the y intercept. Which is 0.
write an equation of the line passing through the point A(-1, 5) that is perpendicular to the line y=1/7x+4
Answers
y = 1/7x + 4
1/7 * a2 = -1
a2 = -7
y = -7x + b
A = (-1, 5)
-7 * (-1) + b = 5
7 + b = 5
b = -2
y = -7x - 2
someone please solve this question
Answers
Answer:
do you have what x and/or y equals
Step-by-step explanation:
Kiley was solving the equation: y= x ÷ 2 + 1 . Her first three y numbers were 3, 5, and 7. Her friend Gia said the ordered pair for the next number would be (16,9). Kiley disagrees. Why is Kiley correct?
Answers
HELP HELP HELP PLEASE
Answers
[tex]\huge\underline{\sf Answer:}[/tex]
[tex] \\{ \sf A \: number \: that \: is \: multiplied \: by \: another \: number \: to \: find \: a \: product \: is \: a \: factor.}[/tex]
What is the 22nd term of the arithmetic sequence 12 , 17 , 22 , 27 , .... , .... , ....
Answers
Answer: 117
Step-by-step explanation:
Formula for arithmetic sequence is:
= a + (n - 1)d
22nd term = a + (n - 1)d
= a + (22 - 1)d = a + 21d
where, a = 12
d = 17 - 12 = 5.
Therefore, 22nd term will be:
= a + 21d
= 12 + 21(5)
= 12 + 105
= 117
The 22nd term is 117
0.8(m - 5) = 10
What is m equal to?
Answers
Answer:
Step-by-step explanation:
I can help
Step 1
0.8(m - 5) = 10 Simplify
Step 2
0.8(m - 5) = 10 simplify the equation
0.8m-4=10
Step 3
0.8m-4=10 Add 4 to the sides
0.8m=14
Step 4
0.8m=14 Divide the sides by 0.8
17.5
Answer
m=17.5
Hope this helps
I need help on these 4. Please help me. Don’t put a link. Please help me.
Answers
Incenter is angle bisectors
Centroid is medians
Circumcenter is perpendicular bisectors
Hopefully this helps!!
A video game was originally priced at $60.
The store owner gives a discount and the video game is now priced at $43.
What is the percent change for the cost of the video game?
%
*Remember:
1.) Find the Change: Old value- new value
2.) Divide the answer by the old value
3.) Multiply by 100
Answers
Answer: 71
Step-by-step explanation: fine the new value and Divided by the old value then multiplied by 100 then you get your answer
ILL BRAINLIEST YOU IF YOU GET IT RIGHT
Answers
Answer:
the answer is b Both pairs are parallel to each other
Answer: its b, shawty
Step-by-step explanation:
probably
What is 8993838383 x 4?
Answers
Answer:35975353532 is your answer hope this helped
Step-by-step explanation:
pleas make brainly
Each recipe for lasagna requires half a pound of ricotta cheese. How many recipes of lasagna can be made at a restaurant that has 6 pounds of ricotta, assuming all other ingredients are present
Answers
Answer:
12
Step-by-step explanation:
Two half pounds equal a whole pound, so if there are 6 whole pounds, there are 12 half pounds.
Please answer ASAP I need it in 10 minutes
A savings account that earns 1% interest compounded annually is opened with an initial deposit of $250. If no further deposits or withdrawals are made and the expression
250 * x^t gives the balance of the account after t years, what is the value of x?
Answers
Answer:
cheese 123
Step-by-step explanation: i am sorry i need points
if d = 14in, what is the radius?
Answers
Answer:
radius= 7
Step-by-step explanation:
the radius is half of the diameter.
i hope this helps :)
Answer:
The radius is 7in.
Step-by-step explanation:
D stands for diameter. To find the radius, you divide the diameter by 2.
14/2 = 7
Therefore, the radius is 7.
what is the slope of the line?
What is the y-intercept?
Write the equation of the line?
Answers
Answer:
Slope is 2
Y-intercept is 3
equation is y=2x+3
the question on the picture please
Answers
Answer: D. 21
Step-by-step explanation: 4/10=X/15 then X=6. Plug that in which is 6+15=21
The table below represents the linear relationship between the total amounts of money guests spent while visiting an amusement park based on the number of rides they rode. Number of Rides Ridden 8 12 15 20 Total Amount Spent ($) 20.95 26.95 31.45 38.95 What is the y-intercept of the line that models this situation?
Answers
Answer:8.95
Step-by-step explanation:can’t guarentee But that’s what I got
Ashley is considering attending the state university to obtain a 4-year bachelors degree. For one year, the tuition fee is $9890, room and board is $8250, and books are $680. What will be the cost over the total 4 years of obtaining the degree?
Answers
Since she is going for four years, we need to multiply that number by four.
$18820 * 4 = $75,280
Total: $75,280
There is a question here it is a pic
Answers
Answer:
The area would be 81.
Step-by-step explanation:
To find this answer, I multiplied 9 by 9 cm , which gave me 81, which would represent the correct area of the figure.
Answer:
81
Step-by-step explanation:
In order to find the area, multiply
A = l × w
I haven't been using this for 1 year and 1/2. I got charged $24.00 out of no where! I want my money back!
Answers
Answer:
I cannot help you with that because I have the free part.
Maybe un-subscribe or go to the faq site for Brainly and ask that question there.
Step-by-step explanation:
Hope that this helps you out! :)
If you have any questions please put them in the comment section below this answer.
Have a great rest of your day/night!
Please thank me on my profile if this answer has helped you.
When x=6,y=14.find y when x=30
Answers
Answer:
y = 70
Step-by-step explanation:
6 x 5 = 30
14 x 5 = 70
write down two prime numbers that have a sum of 32
Answers
There are two ways to write 32 as the sum of two prime numbers: i) 13 + 19 = 32 ii) 3 + 29 = 32
Ben loses 26% of this investment. He used to have 180 . How many does he have now?
Answers
Answer:
133.2
Step-by-step explanation:
26% * 180 = 46.8
180 - 46.8 = 133.2
Answer:
133.2
Step-by-step explanation:
Ben now has 74% of his investment left:
180 x .74 = 133.2
Complete the question
Answers
Answer:
$625 on groceries
Step-by-step explanation:
The number is 25%, which is 1/4 of $2,500, so we need to find 1/4 of 2,500
2500/4=625
That is how you solve it using division.
Hope this helps!
A line is parallel to y = 3x - 2 and
intersects the point (3,5).
Write the equation in slope-intercept form.
y - 5 = 3(x-3)
y = [?]x + [ ]
Answers
Answer:
Just give me some minutes and I'll help you
Step-by-step explanation:
Formula: Y=mx+b
y= 3x-2 (3,5)
x,y
Answer y= 3x+5
The coefficient of x is the slope of the parallel line, option (C) m=3 is the correct answer.
What is slope of a line?The slope or gradient of a line is a number that describes both the direction X and Y and the steepness of the line. It is the ratio of the vertical change to the horizontal change between any two distinct points on a line.
For the above situation,
The equation is y = 3x - 2.
The general form of equation for slope intercept form is [tex]y = mx + b[/tex]
Now compare the given equation with the general equation,
⇒ [tex]m=3[/tex].
Since the lines are parallel, the slope will be the same for all lines.
So, slope for the parallel line is also m = 3.
Now the equation in slope-intercept form that intersects the point (3,5) is
⇒ [tex]y - y1 = m(x-x1)[/tex]
⇒ [tex]y - 5 = 3(x-3)[/tex]
⇒ [tex]y-5=3x-9[/tex]
⇒ [tex]y=3x-9+5[/tex]
⇒ [tex]y=3x-4[/tex]
Hence we can conclude that the coefficient of x is the slope of the parallel line, option (C) m=3 is the correct answer.
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Writing Equations of lines
Answers
Answer:
y = -5/3x+8
Step-by-step explanation:
Equation: y=mx+b
You find the slope (m) by calculating the distance between the two points. For the y axis, 3 is -5 away from 8. For the x axis, 3 is 3 away from 0. You then devide y by x, which gives you -5/3.
To get the y intercept (b), you just look at the graph, where it's at 8.
God luck!
Answer:
y = -5/3x + 8
Step-by-step explanation:
Points on the graph: (0, 8) and (3, 3)
Slope:
m=(y2-y1)/(x2-x1)
m=(3-8)/(3-0)
m= (-5)/3
m= -5/3
Slope-intercept:
y - y1 = m(x - x1)
y - 8 = -5/3(x - 0)
y - 8 = -5/3x
y = -5/3x + 8
I REALLY NEED HELP!
Han has 10 cubes, every 5 inches on a side.
Find the total volume of Han’s cubes. Express your answer as an expression using an exponent.
Find the total surface area of Han’s cubes. Express your answer as an expression using an exponent.
Answers
Answer:
Cube with side 5 has volume:
V = 5³ in³10 cubes have volume:
V = 10*5³ inCube has surface area:
S = 6*5² in²10 cubes have surface area:
S = 10*6*5² = 60*5² = 12*5³ in²fill in the blank !!
Answers
Answer:
multipclation invearse :) HOPE THIS HELPSS
Step-by-step explanation:
What is the mean of the normal distribution shown below?
A normal distribution is shown. The curve peaks at 0.
Group of answer choices
-1
0
3
1
Answers
Use Conects it works better than brainly
Answer:
zero myyyy duedes
Step-by-step explanation: