4x-5y=0
8x+5y=-60
what is the answer by substitution or elimination?
Answers
Related Questions
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:
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]
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)
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.
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:
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
(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:
if g(x)=2x-10 g(-1) is??
Answers
Answer:
-12
Step-by-step explanation:
g(-1) = 2(-1) - 10 = - 2 - 10 = -12
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
Can someone please help
Answers
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
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.
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:
HELPPPPPPPPPPPPPPPPPPPPPPPPP
Answers
Answer:
SAS
Step-by-step explanation:
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.
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)
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
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.
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
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
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).
Which 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
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
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
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
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) = -5can someone help me !
Answers
Answer:
its b
Step-by-step explanation:
hope this helps