4x-5y=0
8x+5y=-60
what is the answer by substitution or elimination?
Answers
Related Questions
HELP PLS ASAP I WILL GIVE 50 points and brainliest PLS
The variable z varies jointly with x and y. Also, z = -75 when x = 3 and y = -5.
What equation describes this variation?
z = kxy
What is the constant of variation?
k =
Answers
Answer:
Maybe is 2y
Step-by-step explanation:
Step-by-step explanation:
z = kxy, where k is a real constant.
We have z = -75, x = 3, y = -5.
(-75) = k(3)(-5)
-75 = -15k
k = 5.
(8,0) (10,14) (14,30)
Answers
Answer:
What is the answer u want dude
Step-by-step explanation:
Answer:
whats the answer
Step-by-step explanation:
HELPPPPPPPPPPPPPPPPPPPPPPPPP
Answers
Answer:
SAS
Step-by-step explanation:
can someone help me !
Answers
Answer:
its b
Step-by-step explanation:
hope this helps
A chef uses 1/2 cup of cheese for a small pizza. There are 6 grams of fat in 1/4 cup of cheese.
Drag one expression next to each question. The correct expression for each row is a way to answer that question.
Drag one expression next to each question. The correct expression for each row is a way to answer that question. PLZZ help!!
Answers
Answer:
The correct options are;
1) How many grams of fat are in 1/2 cup of cheese = [tex]6 \div\dfrac{1}{4} \cdot \dfrac{1}{2}[/tex]
2) How many cups of cheese will the chef need to make 13 small pizzas = [tex]\dfrac{1}{2} \cdot 13[/tex]
3) How many small pizzas could the chef make if he has 3/4 cup of cheese is given as follows;
[tex]\dfrac{3}{4} \div \dfrac{1}{2}[/tex]
Step-by-step explanation:
1) How many grams of fat are in 1/2 cup of cheese
The number of grams of fat per 1/4 cup of cheese = 6 grams
Therefore;
The number of grams of fat per kilogram of cheese = 6/(1/4)
The number of grams of fat per 1/2 kilogram of cheese = 6/(1/4) × 1/2, which can be written as follows;
[tex]6 \div\dfrac{1}{4} \cdot \dfrac{1}{2}[/tex]
2) How many cups of cheese will the chef need to make 13 small pizzas
The number of cups of cheese per small pizza = 1/2 cup of cheese
Therefore, the number of cups of cheese in 1 small pizza = 1/2 × 13, which can be written as follows;
[tex]\dfrac{1}{2} \cdot 13[/tex]
3) How many small pizzas could the chef make if he has 3/4 cup of cheese is given as follows;
Given that 1/2 cup of cheese can make one small pizza
(1/2)/(1/2) = 1 cup of cheese can make 1/(1/2) small pizza
3/4 cup of cheese can make 3/4 × 1/(1/2) = (3/4)/(1/2) small pizza, which can be written as follows;
[tex]\dfrac{3}{4} \div \dfrac{1}{2}[/tex]
Marcus spent 10 hours doing his homework last week. This week he spent 11 hours doing homework. He says that he spent 110% more time doing homework this week. Is he correct? Show your work to justify your decision.
Answers
Answer:
Yes he is correct, If it was 100% then it would stay the same 10 hours. But since it's 110%, it is in fact 11.
Step-by-step explanation:
This is important I need help I will give brainiest to whoever does both
Answers
Answer:
c no each output has one input and 2nd is function b plz need brainlyest :P
Step-by-step explanation:
The reason is because every input can only have one output
The second is B
The reason is because the ROC for function A is 1/4 also known as .25
The ROC for function B is .75
1. For the function f(x) = 3x + 1, find f(-2). (substitute -2 in for x)
Answers
Answer:
f(-2) = -5
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Function NotationStep-by-step explanation:
Step 1: Define
f(x) = 3x + 1
f(-2) is x = -2
Step 2: Evaluate
Substitute in x: f(-2) = 3(-2) + 1Multiply: f(-2) = -6 + 1Add: f(-2) = -5Which of the following is a solution to the equation 3/4x - 12 = -18?
4.5
-22.5
-40
-8
Answers
Answer:
-8
Step-by-step explanation:
3/4x=-18+12
x=-6×4/3
x=-8
Answer:
x = -8
Step-by-step explanation:
[tex] \frac{3}{4} x - 12 = - 18[/tex]
i) multiply both sides of equation with 4
[tex] 4(\frac{3}{4} x - 12) = 4( - 18)[/tex]
[tex](4 \times \frac{3}{4} x) + (4 \times ( - 12)) = - 72[/tex]
[tex]3x - 48 = - 72[/tex]
ii) move -48 to the right-hand side and change its sign
[tex]3x = - 72 + 48[/tex]
iii) calculate the sum
[tex]3x = - 24[/tex]
iv) divide both sides of equation with 3
[tex] \frac{3x}{3} = \frac{ - 24}{3} [/tex]
[tex]x = - 8[/tex]
7th unit 5 lesson 1
Answers
Answer:
yes
Step-by-step explanation:
i need more info but yes
I need hellllllllllllllllllllllllppppppppppppppppppp An accountant used to charge $88 per hour, but recently decided to charge 25% less. Now how much does she charge per hour? *
MAKE SURE TO STATE IF IT IS AN INCREASE OR A DECREASE AND TO HAVE THE PERCENT SYMBOL. EX) 5% INCREASE *
Answers
Answer:
$66
Step-by-step explanation:
0.75(88)
Helppppppppppppppppppppppppppppppppppppppp Pleaseeeeeeeeeeeeeeeee
Answers
Answer:
2. -1/3x > 12
3. 5+x > 7
4.10-x < 30
5. 2+5x ≤ 3
6.6-2x ≥ 17
8.$400+$49g=$750
at most the enthusiast can buy 7 games along with the player
Step-by-step explanation:
Part A: Enter values for the ratio of
y
for the equation y = 2x.
2
х
Y
y
Value of
C
__1
-2
1
2
2
4
Y
Part B: Enter values for the ratio of for the equation y= 2x + 2.
Answers
What is the equation of a line that is perpendicular to -x + 2y =4 and passes through the point (-2, 1)
Answers
Answer:
y = -2x - 3
Step-by-step explanation:
-solve for y: y = 1/2x + 2
-perpendicular equals opposite slope: -2
-plug in the point: (1) = -2(-2) + b
1 = 4 + b
b = -3
put it all together: y = -2x - 3
help me please I suck at math its my weakness
Answers
Answer:
b
Step-by-step explanation:
Is the following relation a function?
Answers
Answer:
yes
Step-by-step explanation:
A function is any graph that the x values do not repeat.
You can check this by using this vertical line test
Run your finger or a pencil down a specific vertical (top to bottom) line on the graph, if you can see that it intersects into the graph more than once, then it's not a function.
if g(x)=2x-10 g(-1) is??
Answers
Answer:
-12
Step-by-step explanation:
g(-1) = 2(-1) - 10 = - 2 - 10 = -12
Help me with this problem please
Answers
Answer:
24/12
---------
100
Step-by-step explanation:
and just go to a calculator and divide the answer and round it up
Can someone please help
Answers
Will give crown help
Answers
Answer:
[tex]m=\frac{5}{4}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Find points from graph.
Point (-5, -2)
Point (-1, 3)
Step 2: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m
Substitute [SF]: [tex]m=\frac{3+2}{-1+5}[/tex]Add: [tex]m=\frac{5}{4}[/tex]Answer:
5/4
Step-by-step explanation:
you can also use rise/run
you go up 5 and over 4
The table below would represent a proportional relationship except for one y-value. Identify which y-value prevents the table from representing a proportional relationship. Then, select the value that would make the table proportional.
X 1.5, 2, 4, 4.5, 7
Y 6, 8, 16, 16.5, 28
Alternative values 17, 18, 18.5, 19.5, 20
Answers
9514 1404 393
Answer:
non-proportional y-value: 16.5
corresponding proportional y-value: 18
Step-by-step explanation:
Each y-value is 4 times the corresponding x-value except for (x, y) = (4.5, 16.5).
The correct proportional values would be (4.5, 18).
What is the probability that the selected adult is a smoker?
Answers
Answer:
Alot of adults smoke and very little adults don´t smoke at all
Step-by-step explanation:
14.0% of U.S. adults overall.
like to me 85% of adults smoke
4 1/2 + 1 3/5 =
What is the sum in simplest form
Answers
Answer: 6 1/10
Step-by-step explanation: I don’t know the decimal form but I had this question so
HELP ME PLEASE I WILL GIVE BRAINLIEST PLEASE PLEASE
Sandra wants to have her new technology up and running as soon as possible. She is looking for a tool that she can download and use right away. She is evaluating _____.
features
operating expenses
templates
availability
Answers
Answer:
i beleive it answer is b.) operating expenses
Step-by-step explanation:
i say that because she is looking for a quick way to operate the computer without any expense.
If correct plz mark brainly :)
Answer:
availability
Find the coordinates of the point P that divides the directed line segment from A to B in the given ratio.
A(-6, 9), B(2, 1); Ratio 5 to 3
Answers
Answer:
The coordinates are (-1,4)
Step-by-step explanation:
To get the coordinates, we use the internal division formula
Mathematically, that will be;
(nx1 + mx2)/(m+n) , (ny1 + my2)/(m + n)
In this case;
m = 5
n = 3
(x1,y1) = (-6,9)
(x2,y2) = (2,1)
Substituting these values, we have that;
(3(-6) + 5(2)/(5+3) , (3)(9) + 5(1))/(5 + 3)
= (-18 + 10)/8 , (27+5)/8
= -8/8,32/8
= (-1,4)
PLEASEE HELP!!!!!!!!!!!!!!!
a speck of dust is 1.5 × 10 ^6 m wide. which of the following is the best way to rewrite this quantity, using more appropriate units?
Answers
Answer:
A
Step-by-step explanation:
the speck of dust is very small,
using the smallest unit out of all the choices, mm, is the best way to rewrite it
choice A
Which table shows a proportional relationship?
b 2 3 8 9 14
c 4 6 16 18 28
x 1 2 3 4 5
y 4 5 6 7 8
r 2 3 4 5 6
s 3 5 6 8 9
p 1 3 5 7 9
q 3 7 11 15 19
Answers
it is b 2 3 8 9 14
c 4 6 16 18 28
i took the test
A System of Linear Equations consist of.....
O three or more lines.
O at least one line.
O at least two lines.
O more than two lines.
Answers
Answer:
B. At least one line
Step-by-step explanation:
Two lines can overlap on the coordinate plane, so it appears to be one line.
Meryl planted 270 plants in 45 equal rows. Find the unit rate.
Answers
Answer:
6 plants per row
Step-by-step explanation:
270 divided by 45 gives you 6, which is your individual value per row
Answer:
6 plants per row
Step-by-step explanation:
This is a fraction equal to
270 Plants ÷ 45 Rows
We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 45
270 Plants ÷ 45
45 Rows ÷ 45
=
6 Plants
1 Row
=
6 Plants
Row
= 6 Plants per Row
Graph the line that passes through the points (3,-4) and (3,-1) and determine
the equation of the line.
Answers
Answer:
The equation of a line:
x = 3The graph of the line is attached below.
Step-by-step explanation:
Given the points
(3, -4)(3, -1)Finding the slope between (3,-4) and (3,-1)
(x₁, y₁) = (3,-4)
(x₂, y₂) = (3, -1)
Using the slope formula
m = y₂-y₁ / x₂-x₁
= -1-(-4)) / 3 - 3
= -1 + 4 / 0
m = ∞
The slope of the line is undefined, then, by definition, the line would be a vertical line.
As the line that passes through the points (3,-4) and (3,-1)
For a vertical line, the value of x is the same for each and every value of y.Thus, the equation of a line:
x = 3The graph of the line is attached below.