x - 2y =0
3x + y = 0
solve using the substitution method
to solve the linear system
Answer:
x=0, y=0
Step-by-step explanation:
① Label the 2 given equations.
x -2y= 0 -----(1)
3x +y= 0 -----(2)
② Make x the subject of formula in equation (1).
From (1): x= 2y -----(3)
③ Substitute equation (3) into (2):
3(2y) +y= 0
Expand:
6y +y= 0
Simplify:
7y= 0
y= 0
④ Find x.
Subst. y=0 into (3):
x= 2(0)
x= 0
A right triangle has an area of 36 square units.
If you draw scaled copies of this triangle using the scale factors in the table, what will the areas of these scaled copies be?
Answer:
the answer is 4
What is the result of 60-15? Use the model to find the answer. A 4 B 5 C 12 D 20
Answer:
its a).4
Step-by-step explanation: 60 divided by 15= 4 you can use a calculator to check if im right if you dont trust me
The answer would be 4 if the number expression is 60 ÷ 15 after using the arithmetic operation, option (A) 4 is correct.
What is an arithmetic operation?It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that is +, -, ×, and ÷.
It is given that:
The number expression is:
60 ÷ 15
Using model:
= (15 + 15 + 15 + 15) ÷ 15
= 1 + 1 + 1 + 1
= 4
Thus, the answer would be 4 if the number expression is 60 ÷ 15 after using the arithmetic operation, option (A) 4 is correct.
Learn more about the arithmetic operation here:
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find the sum of (2c+6)+3(c+8) pls help me for 15 points and a brainiest!!!
Answer:
(2c+6)+3(c+8)
=2c+6+3c+24
=5c+30
What is the present value of ₱30,000 due in 27 months at 3% compounded annually?
Answer:
32,063.06
Step-by-step explanation:
the formula for compound interest: [tex]A = P(1+\frac{r}{n})^{nt\\}[/tex]
so to use this you are essentially solving for a.
p is the principle (or initial) amount deposited.
r is the rate (in percent)
n is the number of time periods compounded (like annually, monthly, weekly, or daily)
t is the time period (in years)
In this instance the formula looks like: [tex]A = 30,000(1+\frac{0.03}{1})^{1*2.25}[/tex]
You then solve for A using the formula. It is important to remember to use the order of operations
0.25 of 40 plz plz help
What is the equation in slope-intercept form of the line that passes through the point (6, 1) and is parallel to the line represented by
y = -3x + 2?
Enter your answer by filling in the boxes.
Given ΔABC, m∠C = 90° , m∠ ABC = 30° , AL ∠ Bisector CL = 6ft. Find LB (Feet)
WILL GIVE BRAINLIEST!!
Answer:
The Answer is 12 feet
Step-by-step explanation:
This is my second account lol I just wanted to give Angie the brainliest!
Answer:
10 feet
Step-by-step explanation:
what is the missing number in the solution to 948 = 10 below
Answer:
I can't see anything below-so thx for the free points ig
Step-by-step explanation:
you love to play pool at the local hall if it costs $10 just to play plus $2.30 per game played what is the most number of games that you can play in one night on $50
Answer:
4
Step-by-step explanation:
or 17
10 to enter i assume and then 2.30 per game
12.3 everytime u play
50/12=4
You design a tree house using a coordinate plane. You plot the vertices of the floor at J(2,1),K(2,8),L(9,8), and M(9,1). The coordinates are measured in feet.
a. Which best describes the shape of the floor?
triangle
square
trapezoid
A rectangle having a length one foot longer than its width.
A rectangle having a length two feet longer than its width.
Question 2
b. What are the perimeter and the area of the floor?
Perimeter:
ft
Area:
ft2
Answer:
Square
Area = 49
Perimeter =28
Step-by-step explanation:
How to get the area:
Square A= Side x side
Side=7
7x7=49
How to get perimeter:
Add the lengths of the square which is 7
7x4=28
whoever knows what 9+10 is i will reward them
Answer:
19
Step-by-step explanation:
A Polynomial, p(x), has zeros when x = -2, x = 1/3, X = 3. What could be the equation of p(x)?
Answer:
(x+2)(x-1/3)(x-3)
Step-by-step explanation:
This could be a possible equation, the signs of the of the roots are always the opposite in the equation form.
hange each decimal or mixed decimal to a percent.
a. 0.73
b. 0.023
c. 0.176
d. 2.415
Answer:
a. 73 percent
b. 2.3 percent
c. 17.6 percent
d. 241.5 percent
Step-by-step explanation:
What is the factored form of a quadratic with roots x = 5 and x = -11
Answer:
x=5×-11
this is the answer
Answer:
Step-by-step explanation:
X=11
X=-5
....................................
Answer:
uuuhhhh well i think B maybe
Answer: B
Step-by-step explanation: hope it helps :)
I need help with this
Answer:
A
Step-by-step explanation:
process of elimination... :D
Which expression are equivalent to 4m + 12?
Answer:
2(2m+6) or 4(m+3)
Step-by-step explanation:
answers can vary, but I would go with the second one becuase it's always best to distribute the greatest common factor.
Answer:
4(m+3) and 6m- 2m + 12
Step-by-step explanation:
PLEASE HELP if you help you like to play among us
Subtracting a number is the same as adding its opposite.
Use this understanding to complete each of the equations below.
CLEAR CHECK
Answer:
-5 - (-7) = -5 + -7
= 2
-5 - 7 = -5 + -7
= -12
A polygon is graphed on a coordinate plane, with a vertex located at
a point represented by (x,y).
The polygon is dilated with a scale factor, a , with the origin as the
center of dilation. The dilated image of the polygon is larger than
the polygon.
Which statement is true?
Answer:
a is greater than 1
Step-by-step explanation:
Let the two polygons be represented as A and B.
Where A is the original polygon and B is the image of A
Such that
Polygon A has vertex (x,y) and scale factor = a
From the question, we understand that polygon B is bigger than A
When the dilated image (polygon B) is bigger than the original image (polygon A), then the scale factor is greater than 1.
Take for instance.
One of the coordinate point of polygon A is (2,4)
The corresponding coordinate point of polygon B will be greater than (2,4) because a is greater than 1.
Take a as 2:
The corresponding point on Polygon B would be 2 * (2,4) = (4,8)
subtract (-x - 3) - (5x + 2)
plz help
Write the mixed number as a percent.
1 17/20
Answer Quick and i will give you brianliest
Answer:
185% .!!!!!!!!!!!!!!!!!
Divide. Write the quotient in lowest terms.
2 1/2 divided by 2 2/3
Answer: 15/16
Step-by-step explanation:
2 1/2 --> 5/2
2 2/3 --> 8/3
5/2 / 8/3
15/6 / 16/6
15. 16
6 6
6*15 ÷ 16*6
90 / 96
Representative: “I am planning to attend a company-paid conference. My charges will include $412.00 for airfare, $378.00 for conference registration, and $210.00 for food.” Supervisor: “Please submit an expense form for a total of __________ when you return.”
When he returns, the total will be "$1,000".
Given charges are:
For airfare,
= $412.00
For conference registration,
= $378.00
For food,
= $210.00
The total charges will be:
= [tex]Airfare+Conference \ registration+Food[/tex]
= [tex]412+378+210[/tex]
= [tex]1,000[/tex] ($)
Thus $1,000 is the right answer.
Learn more:
https://brainly.com/question/18057159
plz help! will give brainliest!!!
Answer:
A.
Step-by-step explanation:
It has both in it, so its correct
A rotating wind turbine has a diameter of about 145 feet and its circumference is about 456 feet. A smaller model of the turbine has a circumference of about 16 feet. What will the diameter of the model be? If necessary, round to the nearest whole number.
The diameter of the model will be about ___ feet
Answer:
ross-multiplication.
circumference divided by the diameter
10/x = 580/185
10x185=1850
1850/580=3.189
Step-by-step explanation:
give me brainliest
Answer:
7 feet.
Step-by-step explanation:
Solve
Set up a proportion using the given information for the turbine and its model.C /d =
C /d
Set up a proportion.660 /210 =
22/ d
Substitute the given values.660 ÷ 30
210 ÷ 30 ≈
22/ d
Since 660 divided by 30 is approximately 22, divide 210 by 30 to find the value of d.
660 /210 ≈
22/ 7
d ≈ 7
The diameter of the model is approximately 7 feet.
Hurry plz!!
For parts (b) and (c), type each answer in the box below.
b. Explain why the opposite of a positive number will always be a negative
number
C. Explain why zero is its own opposite number.
If 30% of all the people at the carnival are on a ride, how many people are on a ride?
Answer:
165
Step-by-step explanation:
30% x 550= 165
Select all graphs that represent functions
Answer:
where is the functions
Step-by-step explanation:
in a right triangle the length of a hypotenuse is c and the length of one leg is a, and the length of the other leg is b what is the value of b, if c=13, a=12?
Answer:
5
Step-by-step explanation:
a=12 (height)
c=13 (hypotenous)
b=? (base)
By using Pythagoras theorm
We have, hypotenous sq=base sq+height sq
Let b =base SO, base sq=hypotenous Sq-height Sq
=>base Sq =13sq-12sq
Base Sq =169-144
Base Sq =25
Base =5 (shifting the sq)....
Hope it's helpful