Answer:
(6, -1)
Step-by-step explanation:
Solve the System of Equations
2x + 3y = 9 and x − 2y = 8
Add 2y to both sides of the equation.
x = 8 + 2y 2x + 3y = 9
Replace all occurrences of x with 8 + 2y in each e quation.
Replace all occurrences of x in 2x + 3y = 9 with 8 + 2y. 2 (8 + 2y) + 3y = 9
x = 8 + 2y
Simplify 2 (8 + 2y) + 3y.
16 + 7y = 9
x = 8 + 2y
Solve for y in the first equation.
Move all terms not containing y to the right side of the equation.
7y = −7
x = 8 + 2y
Divide each term by 7 and simplify.
y = −1
x = 8 + 2y
Replace all occurrences of y with −1 in each equation.
Replace all occurrences of y in x = 8 + 2y with −1. x = 8 + 2 (−1)
y = −1
Simplify 8 + 2 (−1).
x = 6
y = −1
The solution to the system is the complete set of ordered pairs that are valid solutions.
(6, −1)
The result can be shown in multiple forms.
Point Form:
(6, −1)
Equation Form:
x = 6, y = −1
Answer:
(6, -1)
Step-by-step explanation:
Find the slope with (7, 4) and (8, 2)
Answer:
slope is -2
Step-by-step explanation:
2-4= -2
8-7=1
-2/1= -2
branliest plzzx
HELP PLEASE
Which number sentence is true
O A) 12 < |-12|
OB) |-121 <|-48|
C) |-48|< |48|
OD) |12| > |-48|
Answer:
A
Step-by-step explanation:
Write the equation of the line that passes through the points (-6,8) and (8,8), Put
your answer in fully reduced point-slope form, unless it is a vertical or horizontal line,
Write a power that has a value greater than 140 and less than 145.
Answer:
[tex]12^{2}[/tex]
Step-by-step explanation:
To find: a power that has a value greater than 140 and less than 145
Solution:
Take [tex]x=12^{2}[/tex]
Here,
[tex]12^{2}=144[/tex] and [tex]140<144<145[/tex]
That is [tex]140<x<145[/tex]
Therefore,
[tex]12^{2}[/tex] has a value greater than 140 and less than 145.
simplify the expression. -1/4 -(1 1/2)
Answer:
- 7/4
Step-by-step explanation:
Ming wrote the table of points below.
x
y
5
10
10
20
15
30
Which explains whether or not Ming has described a proportional relationship, and why?
Ming has described a proportional relationship because the ordered pairs are linear and the line passes through the origin.
Ming has not described a proportional relationship. Although it is a linear relationship, it does not pass through the origin.
Ming has not described a proportional relationship. Although it passes through the origin, it is not a linear relationship.
Ming has described a proportional relationship because the line does not pass through the origin.
Answer:
I am 99.99% sure it is the first one
Would you rather pay for 3 gifts and get 1 free or use a coupon for 20% off and why?
Answer:
Pay for 3 and get one off
Step-by-step explanation:
Because you would get more for your bargain. A 20% coupon would be for one. but to buy 3 and get one free, that's a better deal.
(Pls give brainliest)
write 640000 in standard form
Answer:
6.4×10⁵
Step-by-step explanation:
Answer:
640000 in a standard form is 6.4 ×10^5
What is the Answer to -14.5 + (-1.24)
Function A is represented by the equation y = 2x+5.
Function B is a linear function that goes through the points shown in the
table.
X 1 3 4 6
y -1 3 5 9
Which statement correctly compares the rates of change of the two
functions?
A. The rate of change of function A is 5.
The rate of change of function B is 4.
B. The rate of change of function A is 2.
The rate of change of function B is 2.
C. The rate of change of function A is 2.
The rate of change of function B is 4.
D. The rate of change of function A is 5.
The rate of change of function B is 2.
Answer:
i think its A or D but idrk, it has been 3 days so what did you choose and did you get it right or wrong?
Step-by-step explanation:
can you please quick solve this, thank you:))
3x+2y=5
2x+2y=4
Answer:
(x,y)=(1,1)
Step-by-step explanation:
got it right on a test
Answer:
X=+4
y=-2
Step-by-step explanation:
this is simultaneous equations
hence,
using elimination method
3x+2y=5
2x+2y=4
2y eliminates 2y
3x+2x=5x=5*4
5x=20
X=20/5
X=+4
(2)
to find "y"
take any of the equation above
using equ(2)
2x+2y=4
2(4)+2y=4
+2y=+4-8
+2y=-4
y=-4/2
y=-2
hope it useful!
unit 5 lesson 4.3 quiz answers
Answer:
There is nothing here to answer
Step-by-step explanation:
20% of the total candy in a basket is Reese's chocolate. There are 8 Reese's in the basket. What is the total number of pieces of candy in the basket?
Answer:
I believe it is 40. I'm not 100% sure though
Step-by-step explanation:
If 20% of the candy is reese's and there are 8 reese's in the basket, to find the answer you must multiply 8 by 5. You multiply 8 by 5 because to get 100% you have to multiply 20% by 5 to get 100%.
Solve by using substitution -5x-y=12 y=-4x-9
Answer:
(-3, 3)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesAlgebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define systems
-5x - y = 12
y = -4x - 9
Step 2: Solve for x
Substitution
Substitute in y: -5x - (-4x - 9) = 12Distribute negative: -5x + 4x + 9 = 12Combine like terms: -x + 9 = 12Subtract 9 on both sides: -x = 3Divide -1 on both sides: x = -3Step 3: Solve for y
Define original equation: y = -4x - 9Substitute in x: y = -4(-3) - 9Multiply: y = 12 - 9Subtract: y = 3Please help! ( WIll mark Brianliest )
Help
Answer:y= (3/4)x -7/4
Step-by-step explanation:
[y -(-1)]/[x - 1] = [2 -(-1)]/[5 - 1]
[y + 1]/[x - 1] = 3/4
y + 1 = (3/4)x - 3/4
y = (3/4)x - 7/4.
Factor completely x3 – 3x2 - 9x + 27
Answer:
x³ - 3x² - 9x + 27
= x²(x - 3) - 9(x - 3)
= (x² - 9)(x - 3)
= (x -3)(x + 3)(x - 3)
= (x + 3)(x - 3)²
Step-by-step explanation:
Divide 2x4- 4x3 - 11x2 + 3x - 6 by x + 2.
Now, evaluate f (x) = 2x4 – 4x3 – 11x2 + 3x – 6 for x = –2.
f (–2) =
Need asap
Answer:
8
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
11. A large pine tree was struck by lightning and fell as
shown by the diagram below. Which equation
could be used to find the length of the fallen part of
the tree?
8 ft
13 ft —
A. 82 +132 - X
B. N82+132 -
C. 132 - 82 = X
D. V132 - 82 - *
It forms a right triangle.
To find X you can use the Pythagorean theorem which would be written as x^2 = a^2 + b^2
This can be rewritten as x = sqrt(a^2 + b^2)
Using the dimensions of the tree the answer would be :
B. x = sqrt(8^2 + 13^2)
The equation to find the length of the fallen part of the tree is
[tex]x=\sqrt{8^2+13^2}[/tex]
Right Triangle.
Right triangles is a triangle with one angle is 90 degree.
The side opposite to 90 degree is the hypotenuse.
Pythagorean Theoremthe sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse .
The length of the fallen part of the tree is the hypotenuse
Hypotenuse is 'x'
Base of the triangle is 13 feet and height is 8 ft
Apply Pythagorean theorem to find out the hypotenuse 'x'
[tex]hypotenuse^2= base^2 + height ^2\\x^2=\sqrt{13^2+8^2} \\x=\sqrt{13^2+8^2}[/tex]
the equation to find the length of the fallen part is
[tex]x=\sqrt{8^2+13^2}[/tex]
Learn more information about 'Pythagorean theorem ' here
brainly.com/question/22605943
Gerald and his dog Spike get on the scale together. Their combined weight is 128 pounds. If the ratio of Gerald's weight to Spike's weight is 3:1, how much does Gerald weigh?
Answer:
96lbs
Step-by-step explanation:
g + s = 128
g = 3s
3s + s = 4s = 128
s = 128/4 = 32
g = 3s = 96
A recipe calls for 2 cups of milk. The recipe makes 10 servings. How many cups of milk are needed to make 8 servings?
Answer:
1.6 Cups of Milk
Step-by-step explanation:
1 serving = 0.2 cups of milk
8 servings= 0.2*8 which equals 1.6
I hope i helped you :)
Which equation represents this number sentence? Fourteen more than the quotient of a number and 5 is 23.
5/n+14=23
n+14/5=23
5/n+14=23
n/5+14=23
Answer:
D) n/5+14=23
Step-by-step explanation:
A) cannot be the right answer because the question states "quotient of a number and 5", which means that it has to be "n/5"B) cannot be the right answer because the question states "fourteen more than the quotient", which means that it has to be "n/5 + 14"C) cannot be the right answer because it's the same as A), it has to be "n/5"D) is the correct answer- this is because the question states "fourteen more than...", which means that "14" has to be added to the quotient; the question also says the "quotient of a number and 5", which means it should be "n/5"Is PRB congruent to QSB? Justify your answer.
This problem requires you to show your work and explain your reasoning.
Be sure to -
• Mark given information on the diagram
• Answer the question
• Provide justification statements that are mathematically correct
Answer:
When looking at this model, and asking yourself the question, is PRB congruent to QSB? PRB is in fact congruent to QSB. Congruent means that two figures have the same shape/size, no matter if it's mirrioring or not it is congruent. In this image, PRB is one shape, and QSB is another. They have the exact same points and they're also the same shape, but one is flipped the right side up. It was also stated PQ and RS bisect eachother at point B, <p is congruent to <Q, and <R is congruent to <S proving all these connections make this figure conguent.
Step-by-step explanation:
HELP PLEASE I DONT UNDERSTAND AND NEED TO PASS
Answer:
1: 80 degrees
Step-by-step explanation:
1:
Angle R is 130
Angle S is 60
Quadrilatural's angles add up to 360
360 - 130 - 60 = 170
In my opinion angle U looks like a right angle so 90 degrees.
170 - 90 = 80
so 80 degrees
Jaylen has a pet grooming business. In 2018, he groomed 200 dogs. In 2019, he groomed 450 dogs. What was the percent increase in the number of dogs groomed? Don't forget your % sign.
Answer:
Percentage increase= 125%
Step-by-step explanation:
Giving the following information:
2018= 200 dogs
2019= 450 dogs
To calculate the percentage increase, we need to use the following formula:
Percentage increase= [(2019 - 2018)/2018]*100
Percentage increase= [(450 - 200)/200]*100
Percentage increase= 125%
A factory produces 40 cars per week. What is the percentage in the production rate if it changes from 40 cars per week to 100 cars per week?
how many squares would have to be shaded to that 1/6 of the shape is shaded
Answer:
3 squares
Step-by-step explanation:
Firstly, you have to count the number of squares in the shape. As it can been seen from the diagram, there are a total 18 squares (i.e 6 squares on each row × 3 squares on each column).
Secondly you have to find 1/6 of the total number of the squares in the shape. 1/6 of the total number of the square in the shape = 1/6 × 18 = 3 squares
Therefore 3 squares would have to be shaded so that 1/6 of the shape is shaded
Answer:
1
Step-by-step explanation:
1 part
i m sorry my small brother wrote it
Please help me with this, i just need to solve "b". Ty!
Answer:
15
Step-by-step explanation:
To find the rate of change, find the slope
Slope= [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
[tex]=\frac{35-20}{2-1}\\\\=\frac{15}{1}\\\\=15[/tex]
10
Tim has $7.14 to spend on candy that costs $3 per pound.
Moby has $6.96 to spend on candy that costs $2.90 per
pound. Which of the following is true?
Answer:
Step-by-step explanation:
Tim has $7.14 to spend on candy that costs $3 per pound. Moby has $6.96 to spend on candy that costs $2.90 per pound. Which of the following is true?
A) Tim can't buy more than two pounds of candy
B) Moby can buy more candy than Tim
C) Tim can afford more candy than Moby
D) They can buy the exact same amount of candy
Correct Answer: Moby can buy more candy than Tim
Write 0.25x+1y=12 in slope-intercept form.
Answer:
y = -.25x + 12
Step-by-step explanation:
Subtract x on both sides.
y = -.25x + 12
There is your answer. The "1" before the y doesn't need to be written, as a rule in algebra, ones do need to be written and are assumed to be there if there is no number at all.
-.25 is the slope and 12 is the y-intercept.
Simplify -1.5(-3.6+2)
Pleaseee people
Answer:
Your answer is 2.4
Step-by-step explanation: