Step-by-step explanation:
option D is correct according to my understanding
hope this answer helps you dear! take care
I don't understand this question, can someone help please?
Devon wants to write an equation for a line that passes through 2 of the data points he has collected. The points are (8, 5) and (–12, –9). He writes the equation
7x – 10y = 3. Is this a good model? Explain your reasoning.
Answer:
No. Correct is 7x - 10y = 6.
Step-by-step explanation:
The slope of the line is (-9-5)/(-12-8) = 7/10
y - 5 = 7/10(x - 8)
10y - 50 = 7(x - 8)
10y - 50 = 7x - 56
7x - 10y = -50 + 56
7x - 10y = 6.
Explanation:
Let's plug in x = 8 and y = 5. This is directly from the ordered pair (8,5).
7x - 10y = 3
7*8 - 10*5 = 3
56 - 50 = 3
6 = 3
We get a false equation at the end, which means the original equation is false when (x,y) = (8,5). Therefore, the point (8,5) is not on the line 7x-10y = 3. Furthermore it means that 7x-10y = 3 is not a good model since Devon wanted the line to pass through both given points.
If you were to plug in (x,y) = (-12,-9), then you would find the same thing happens. For each ordered pair, the left side results in 6. So if Devon were to change that "3" to "6", then it would be a good model as both points would be on the line. In other words, the standard form equation Devon should use is 7x-10y = 6. When solving for y, Devon would get y = (-7/10)x - 3/5
Below is visual confirmation that 7x-10y = 3 is not a good model. Both points are not on the line. The graph was made using GeoGebra.
A rectangle has an area of 140m2.
One of the sides is 10m in length.
Work out the perimeter of the rectangle.
5x -3 (3x - 3 + 2x) >2( 3x - 20 + 4x)
Here is ur answer
- BRAINLIEST answerer
5x -3 (3x - 3 + 2x) >2( 3x - 20 + 4x)5x -3 (3x - 3 + 2x) >2( 3x - 20 + 4x)know i need points
Step-by-step explanation:
hi
16 divided by 5 as a decimal
Answer:
3.2 brainliets
Step-by-step explanation:
x4+x2+1? Also please explain that?
Answer:
x4 + x2 + 1 = 6x + 1
Follow me and hope it helpsAnswer:
Solution
Given,
x4+x2+1
Step-by-step explanation:
Adding and subtracting x2 to the given equation /
=x4+ x2+ 1+ x2- x2
=x4+2x2+1-x2
=(x2+1)2 -x2 {.:a2+2ab+b2=(a+b)2}
=(x2+1+x) (x2+1-x) { .:a2-b2=(a+b) (a-b) }
hope it helps
Ty good day
#urJ.r...~
A polygon on a coordinate grid was transformed using (x,y) (x-4,y-3 whats the transformation
Answer:
A. A translation 4 units to the left and 3 units down.
Step-by-step explanation:
For which values of x is this function constant?
Answer:
- 2 ≤ x ≤ 0
Step-by-step explanation:
The constant part of the graph is the section between (- 2, 1 ) and (0, 1 )
where the graph is horizontal and parallel to the x- axis, that is the y value is constant at 1
what’s the slope for this
Answer:
-2
Step-by-step explanation:
Find the exact circumference.
Answer:
25π
Step-by-step explanation:
C= πd
d=√(24²+7²)=√(576+49)=√625=25
C=25π
Answer:
Step-by-step explanation:
First off, divide 24 by 2 as that would give you the radius of the circle
24cm / 2cm = 12cm
Next, use the formula to calculate the circumference of a circle and plug in radius:
C = 2 x π x r
= 2 x π x 12cm
= 75.40cm is the circumference
55.99 dollars gift with 18% coupon and 7.25% sales tax. What is the final cost?
Answer:
I think it is $91.89.
Step-by-step explanation:
1. Take the number and add sales tax by multiplying 0.0725 ( since that is what the percentage is in a decimal form). Then add that to the original and you have what it would be plus sales tax: $60.05.
2. Then you would need to multiply by 0.18. You would get 10.809
3. Next, subtract the 10.809 from $60.05 and the answer is $49.24.
I hope this helps! :)
The cost of admission to a festival was $112 for 9 children and 3 adults. The admission was $108 for 8 children and 3 adults in another festival. How much was the admission for each child and adult?
Answer:
cost of admission for each child was $4.00, and each adult was $25.33
Step-by-step explanation:
When solving questions like these , I like to break down the problem so I understand it better.
Let x ---> cost of the admission for each child
Y ---------> cost of the admission for each adult
9x+3y = 112 ---> equation A
8x + 3y = 108 ---> equation B
Subtract B from A
9x+3y=112
-8x+3y = 108
x = 112-108
x = 4
Find value of y by substituting value of x into equation
9(4)+3y=112
Solve for y
36+3y = 112
3y = 112=36
3y = 76
y = 25.33
Can someone help me !!!
Answer:look close because that is the question
Step-by-step explanation:
What is the surface area of this square pyramid? ft^2 on ft
2 ft^2
.
4 ft^2
2 ft² .
2 ft^2
2 ft²
What is the justification for each step in the solution of the equation?
5x−42=2x−1
Answer:
39.6Step-by-step explanation:
collecting like terms we have:
5x-2x=-1+42
equating the terms..we have:
3x=41
divide both sides by the Co-efficient of x:
3x\3=42\3
x=39.6
Answer:
What is the justification for each step in the solution of the equation? 5x−4/2=2x−1 Select from the drop-down menus to correctly justify each step. 5x−42=2x−1 Given 5x−4=2(2x−1) Choose. 5x−4=4x−2 Choose. 5x=4x+2 Addition or Subtraction Property of Equality x=2 Choose. Options Addition or subtraction property of equality Multiplication or division property of equality Distributive property of.
__________________________________________________________
5x−4/2=2x−1
Select from the drop-down menus to correctly justify each step.
5x−42=2x−1 Given
5x−4=2(2x−1) Choose.
5x−4=4x−2 Choose.
5x=4x+2 Addition or Subtraction Property of Equality
x=2 Choose.
Options
Addition or subtraction property of equality
Multiplication or division property of equality
Distributive property of equality
Combine like terms
The “/” Is for a fraction
at a party 6 out of 8 people what pepperoni pizza what percent of people don’t want pepperoni pizza
Answer:
sorry I don't know the answer to this question
this is the screenshot bc i cant write it
Answer: 8[tex]x^{6}[/tex] , A
Step-by-step explanation:
1) 2 x 4 = 8
2) Add the exponents: (X^3)x^3) = x^6
Add the exponents (with the same base) when multiplying.
Pls help.......
[tex]100 - j = j - 40[/tex]
100 - j = j - 40
100 + 40 = j + j
140 = 2j
140/2 = j
70 = j
_____
RainbowSalt2222 ☔
Solve for u
24 =y6
u-
Answer:
4
Step-by-step explanation:
=> 24 = y(6)
=> y = 24/6 = 4
Today everything at a store is on sale the store offers a 20
% discount the regualr price of a t shirt is 18 what is the discount price
Answer:
$14.40 is the discount price.
Step-by-step explanation:
0.2 x 18 = 3.6
18 - 3.6 = 14.4
Solve the equation (5x3)(5x4)=55
pretty please i need it asap
Answer:
5x3 is 15 and 5x4 is 20. 15x 20 is 300…. Soo..
Step-by-step explanation:
I got an questions for y'all, see if y'all can what do can an cow with no legs
Answer:
eat it can only eat the things around it
Step-by-step explanation:
a cow with no legs has a hard life due to their lack of legs they cant walk or run meaning the cant get water and they can't run away from Predator's
HURRY PLEASE! Do questions 4,5,6 on paper
This should be right , if any doubt please comment
what must be added to a^2+3/5a
Find the Area of each triangle. Round intermediate values to the nearest tenth. Use the rounded values to calculate the next value. Round your final answer to the nearest tenth.
Answer: 15!
Step-by-step explanation:
You do 1/2 x (5=base) x (6= height)
One batch of pink paint uses `2` cups of red paint and `7` cups of white paint. Mai made a large amount of the same color pink paint using `14` cups of red paint. .
Please help ASAP !!!
THANKS!!
Answer:
rotation
Step-by-step explanation:
Answer:
Reflection
Step-by-step explanation:
I think its reflection because if you reflect them across the y axis then the x axis I believe they will be in those positions.
Divide.
−4 1/3÷−2 3/5
1 2/3
1 4/5
2 1/5
2 3/5
Answer: 1 2/3
Step-by-step explanation:
how do you translate nine equals the quotient of a number and 54
Answer:
9 = [tex]\frac{n}{54}[/tex] or n ÷ 54
Step-by-step explanation:
nine equals the quotient of a number and 54
/\
9 = the quotient of a number and 54
/\
9 = will be division of a number and 54
/\
9 = [tex]\frac{n}{54}[/tex] or n ÷ 54
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
x=5 and y=7
9y+x= ?
i need help );
Answer:
Step-by-step explanation:
All we need to do is substitute the y and x. This would then look like:
9y + x =
9 × 7 + x =
9 × 7 + 5.
Can you solve it from here?
evaluate the expression using the order of operations. show each step of work
Answer:
-73
Step-by-step explanation:
Here's the solving step
