Graph this system of equations.
1.15x + 0.65y = 8.90
x − 3y = -15
Answers
Answer:
We have the equations:
1.15x + 0.65y = 8.90
and
x − 3y = -15
First, let's write them in the slope-intercept form:
The first one will be:
y = -(1.15/0.65)*x + 8.90/0.65
The second:
y = (1/3)*x + 15/3 = (1/3)*x + 5.
then our system is:
y = -(1.15/0.65)*x + 8.90/0.65
y = (1/3)*x + 5.
To graph each line, you can just evaluate the line in two points (for x = 0 and x = 1, for example) and then locate those points in the coordinate axis, and then draw a line that connects them.
For example with the second line:
y(0) = (1/3)*0 + 5 = 5
then we have the point (0,5)
and
y(3) = (1/3)*3 + 5 = 8
Then we have the point (3,8)
With the first equation may be a little harder, as the coefficients are not whole numbers, we can rewrite it as:
y = (1.15/0.65)*x + 8.90/0.65 = (115/65)*x + (890/65)
Where i multiplied and divided by 100 the numerators and denominators in the right side, so now is easier to work with it.
The points you can use are:
y(0) = (115/65)*0 + (890/65) = 13.7
the point is (0, 13.7)
and:
y(1) = (115/65)*1 + (890/65) = 15.5
The point is (1, 15.5)
Below you can see the graphs of both functions:
blue: y = -(1.15/0.65)*x + 8.90/0.65
red: y = (1/3)*x + 5
The answer is in the picture below!
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Answer:
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Which of the sets of ordered pairs represents a function? (1 point)
A = {(2,7), (1,-5), (7, 2), (2, -9)}
B = {(5,3), (-2,-9), (-3, 8), (9,3)}
a.
Only A
b.
Only B
C.
Both A and B
d.
Neither A nor B
Answers
Answer:
Only B
Step-by-step explanation:
A has 2 pairs with the x as the number 2, so they are not functions.
B has all independent pairs with their own numbers
So only B is the correct answer.
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Step-by-step explanation:
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Answer: a
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Step-by-step explanation:
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Answer:
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if n = 4, the value of the expression
[tex]28 - 12 \sqrt{n \div 2} [/tex]
Answers
Answer:
pretty sure it's 17
Step-by-step explanation: just did it
The value of the expression is 11.032
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
28 - 12 √(n ÷ 2)
Sustitute n = 4
= 28 - 12 √(4 ÷ 2)
= 28 - 12√2
= 28 - 12 x 1.414
= 28 - 16.968
= 11.032
Thus,
The value is 11.032
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1/3÷1/9 plesojbghnbugygvjb
Answers
Answer:
3
Step-by-step explanation:
aiufjnsldfncsdkcieo
Answer:
3
Step-by-step explanation:
To divide by a fraction, multiply by the reciprocal of that fraction
1/3×9/1
then we reduce the numbers ( 3 and 9)
then the answers comes as 3
What is being done to the variable in the equation a/-7 = 84? SOMEONE HELP ASAP
It's being divided by 84.
It's being multiplied by 84.
It's being multiplied by -7.
It's being divided by -7.
Answers
Answer:
It's being divided by -7
Step-by-step explanation:
9514 1404 393
Answer:
It's being divided by -7.
Step-by-step explanation:
The equation is read as ...
"A divided by minus seven is equal to eighty-four."
The wording "A divided by -7" means the value of the variable is being divided by -7.
Please help!!!!!!!!!!!!!!!
Answers
well if you look at it it comes at a slope
Parallel lines have the same slope.
True
False
Answers
Answer:
True
Parrellel lines never intersect and they go on and on forever. So, they have the same slope.
Hope this Helps!
Answer:
The statement is true.
Parallel line have same slope.
1
Vie
3
Jaylan makes limeade using cup water per
cup lime juice. Wanchen makes limeade
f ste
Vid
1
using cup water per cup lime juice. Find the unit rates of water (cups) per lime
2
3
juice (cups). Whose limeade has a weaker lime flavor? Enter your answer as a proper
fraction or a mixed number.
Te
Pri
Part 1 out of 2
Jaylan's limeade contains
Wenchan's limeade contains
cups water per cup of lime juice.
cups water per cup of lime juice.
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Answer:
limeade has a weaker lime flavor? Enter your answer as a proper
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Q1. Mara is building a wind chime. She needs string in the following lengths: 6 pieces
of 20 cm, 3 pieces of 30 cm, and 1 piece of 40 cm. How much string does she need?
Answers
45/56 divided by (-.15)
Answers
Answer: I’m pretty sure it’s -5.36 rounded up, if it’s not rounded then it would be -5.367
Answer: 45/56 has a decimal is 0.8035714286.
0.8035714286 divided by -0.15 is -5.357142857 or -5.4
Step-by-step explanation: Also
You are beautiful. You are amazing. You are wonderful. You are perfect just the way you are. Never worry about the way people think about you. Only worry if you like you. You are the most important person to yourself. Just be yourself. No can tell you who you can be. You are truly perfect just the way you are. Never tell yourself you are not good enough, you are enough. Never tell yourself "I'm ugly" you are beautiful. Never let yourself down.
Six more than three times the sum of a number and four.
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I think it’s this
At Gamestop you can buy a Xbox One for $150 and each game to go with it would cost $24. Or, you can buy a Playstation 4 for $180 and each game for $20. Write an equation to determine how many games would need to be purchased for the cost to be equal?
Answers
Answer:
Xbox One is the better console to buy.
Adding the game console for $150.00 with 7 games costing 24, they will cost you $318.00
While the PlayStation 4 with the 7 games cost a total of $320.00
Step-by-step explanation:
Math question I need help with it please help me !
Answers
Answer:
96 degrees
Step-by-step explanation:
Answer:
x = 5°
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Answers
Answer:
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Step-by-step explanation:
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Answers
There are total 4 Diamonds.
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In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.
Given:
Ratio of diamonds to emeralds = 1:4.
Total = 16 emeralds
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What is the y=Mx+b of this equation
Answers
Answer:
[tex]y = - 6x - 8[/tex]
Step-by-step explanation:
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To find the slope, find the rise over run. Every time the line goes over 1 it goes down 6, so the slope would be -6.
PLS HELP BEING TIMED!!!!
Which describes the transformation that could have been applied to triangle ABC?
A dilation could have been applied because all of the
vertices decreased by 2 units.
O An isometric transformation could have been applied
because all of the vertices moved 2 units right and 2
units down.
A dilation could have been applied because all of the
vertices increased 2 units.
An isometric transformation could have been applied
because all of the vertices moved 2 units left and 2
units up.
Answers
Answer: I’m sorry im late, but the answer to your question should be B.
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The image A'B'C' is formed by an isometric transformation because all of the vertices moved 2 units right and 2 units down, the correct option is B.
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The sum of two numbers is 28 and their
difference is 4. Find the numbers.
Answers
Answer:
Two numbers are 16 and 12
Step-by-step explanation:
Let x and y be the numbers
x + y = 28 (1)
x - y = 4 (2)
y = x - 4 (2')
sub (2') into (1)
x + x - 4 = 28
2x = 32
x = 16
Sub x value into equation (1)
16 + y = 28
y = 28 - 16
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solve for a
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Answers
Answer:
x=-9/a and a=-9/x
Step-by-step explanation:
A box of cereal states that there are 87 calories in a 3-4cup serving. What is the unit rate for calories per cup? How many calories are there in2 cups of the cereal?
Answers
Answer: for 2 cups, There are 232 Calories.
Step-by-step explanation:
Step 1
Let the calories in one cup be represented as C
Therefore
3/4 x C = 87 calories
C = 87 X 4 / 3 = 116
unit rate is 116 calories per cup.
Step 2- Solving the number of calories in 2 cups
1 cup serving = 116 calories
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-7y-2-4x-2y+6x+6y-2
Answers
Answer:
-3y-4+2x
Step-by-step explanation:
Answer:
2x - 3y - 4Step-by-step explanation:
-7y-2-4x-2y+6x+6y-2
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Answers
A rental car agency charges $240.00 per week plus $0.25 per mile to rent a car.How many miles can you travel in one week for $380.00?
(Type a whole number)
Answers
Answer:
m=980
Step-by-step explanation:
There's a video in Google on how to do this.
Derek has $20 to spend on used books. Hard cover books cost $5 each and paperbacks cost $2 each. Complete the equation which determines the number x of hardcover books and the number y of paperback books he can buy. What are the possible combinations of books that Derek can buy? Select all that apply.
A. (-2,15)
B. (0,10)
C. ( 2,5)
D. (3,5/2)
Answers
Answer:
c i think
Step-by-step explanation:
Solve for z.
z+5=19
z=
Answers
Answer:
14.
Step-by-step explanation:
you would do 19-5=14.
Answer:
remember to bring all the numbers to one side
So, we get:
z=19-5 (we need the opposite operation)
Step-by-step explanation:
[tex]z=14[/tex]
Find the distance between the two points.
. (-3,-1), (6,2)
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Answers
Answer:
Step-by-step explanation: