How do I solve y= -3x + 21 -2x +3y = 8 by substitution?
Answer:
x = 5
Step-by-step explanation:
substitute the y equation into -2x +3y =8 and you will get 5 as the solution :)
5−a+4a=
please show work :)
Answer:
5 + 3a
Step-by-step explanation:
5 - a + 4a =
5 + ( -a + 4a ) =
5 + ( 4a - a ) =
5 + ( 3a )
Which point would be the image of (-3,-9) after a reflection over the y-axis?
(3,-9)
(-3,9)
(3,9)
(-3,-9)
Answer:
(-3,9)
Step-by-step explanation:
The x value isnt changingThe y value becomes is additional inverseWhich describes the slope of the line that passes through the points (2,5) and (-4,5)?
1:negative
2:positive
3:undefined
4:zero
Can someone help I will mark as Brainliest
Answer:
4: zero
Step-by-step explanation:
It's a zero slope because it's just a straight line. There is no x, so it's a zero slope. Take a look at my work! :)
a triangle has the side 7+x and a side of 15 find the other side
Answer:
x = 8
Step-by-step explanation:
Well, you didn't specify if it was an isosceles triangle or if it was equal or anything so we're going to assume it is.
So since both sides are equal 7+x=15
7(-7)+x=15(-7)
x=8
Plug in 8 as x to check
7 + 8
15
Which would equal the other side.
Pleaseeeee I’ll give first correct answer brainliest
Answer:
the bottom left one is right
Step-by-step explanation:
Lashonda has bought 18 pounds of dog food. She feeds her dog 2/3 pounds for each meal. For how many meals will the food last? Write your answer in simplest form.
Answer:
she have feed 26 or 27
Step-by-step explanation:
I am confused it's 26 or27
Pls help me
I need help guys,and I’m going to give the branliest
Answer: It is .............. A or C but I can't see the question you're trying to answer
Step-by-step explanation:
PLS HELP ASAP! DUE IN 2 HOURS!!!!
If not educationally answered, I will REPORT you.
Solve the given system of equations by using an algebraic method that eliminates one of the variables. (SHOW ALL WORK.) :
Question 5:
2x + 3y = -4
5x + 2y = 1
Question 6:
5c + 7d = 39
6c - 5d = 20
REMEMBER TO SHOW ALL WORK!
Answer:
I have done it I hope it's the right answer
Standard to Slope Intercept Form.
8x + 10y = 70
Please answer!
ANSWER:
y=-4/5x+7
Subtract 8x from both sides of the equation.
10=70y −8x
Divide each term by 10 and simplify
cancel the comman factor to Cancel the common factor.
which is 10
Divide y by 1
Simplify
70 -8x
y= --- + --------
10 10
write in y=mx+b form
so it y=-4/5x+7
88 x 88/22 x 11 x 11
Answer:
42592
Step-by-step explanation:
Answer:42592
Step-by-step explanation: So what you do is do 88 times 88/22 and so on :)
Hurry please (ignore this part hdhdjsfjenejfixhebrfisj)
Answer:
(-3/8) (-5/7) (-1/4) is the answer
Step-by-step explanation:
please mark me as brainliest please
In ΔWXY, the measure of ∠Y=90°, XW = 85, WY = 77, and YX = 36. What is the value of the cosine of ∠W to the nearest hundredth?
Answer:
0.91
Step-by-step explanation:
Identify the variable in the following situation. Mr. Gopal goes to the store and has 25 dollars. He has to buy some candy bars for 10 dollars total. How water bottles can he buy with his remaining money if each water bottle costs 5 dollars
Answer:
3 water bottles
Step-by-step explanation:
25-10=15
15/5=3
PLEASE HELP ME SOON pleaseeeeeee
How is an inequality different from an equation? Give a real-world scenario in which you would write an inequality rather than an equation.
HELPPPPPPPPPPPPPPPP PLEASEEEEEEEEE
Answer: An equation is a mathematical statement that shows the equal value of two expressions while an inequality is a mathematical statement that shows that an expression is lesser than or more than the other. An equation shows the equality of two variables while an inequality shows the inequality of two variables.
Step-by-step explanation: Hope this helps! :D
one scenario can be that if you have less than or equal amount of money only then you can buy a certain thing......e.g : if price of a game is 40....then i should have money equal to or more than fourty to buy the game......
money>=40
What does each variable in the Slope-Intercept Form equation represent?
pleeaseeeeeeeeeee hellpppppp
solve 6x + 2 = 2(x + 4) - 2.
A. x= -1
B. there are infinitely many solutions
C. x= 1
D. x = -7/13
answer for brainliest pls
Answer:
The answer is C. 18 units
Step-by-step explanation:
Please mark brainliest
Hope this helps!
Answer:
C) 18 square units
Step-by-step explanation:
There are many ways to go about solving this. You could divide it into two triangles with a middle section. But it might be easier just to count the squares:
whole squares = 12
half squares = 4 (which equals 2)
3/4 square = 4
1/4 squares = 4
(add the 3/4 and 1/4 squares to equal 4)
12+2+4=18
make sure to write the (#,#)
Answer:
Oh, it's (-1,-1)
Once you graph both lines, you find the point of intersection and they both intersect at point (-1,-1)
If you have any more questions let me know! :)
Step-by-step explanation:
The answer is in the image.
Graham graphs the following system of equations to determine its solution.
2x + 4y = 12
2x - y = 2
What is the correct solution?
Enter your answer by filling in the boxes.
(__,__)
ASAP plz
Answer: (2,2)
Step-by-step explanation:
I'm going to use substitution to solve this:
First, I use the second equation to solve for y in terms of x.
2x - y = 2
-y = 2 - 2x
y = 2x - 2
Then, I plug the value for y into the first equation:
2x + 4y = 12
2x + 4(2x - 2) = 12
2x + 8x - 8 = 12
10x - 8 = 12
10x = 20
x = 2
Now that we have x, we can plug it into either equation (I used the first) to get the value for y:
2x + 4y = 12
2(2) + 4y = 12
4 + 4y = 12
4y = 8
y = 2
We get the point (2,2) as a solution.
Note: This is the point where both lines intersect.
After solving the equation, the value of for the points x and y are (2, 2).
What is an equation?Equations are mathematical expressions that have two algebra on either side of an equal (=) sign. The expressions on the left and right are shown to be equal to one another, demonstrating this relationship. L.H.S. = R.H.S. (left-hand side = right side) is a fundamental simple equation.
As per the given equation in the question,
2x + 4y = 12 (i) and
2x - y = 2 (ii)
Solve the value for y,
5y = 10
y = 10/5
y = 2
Substitute y=2 in equation (i)
2x + 4(2) = 12
2x = 12 - 8
x = 4/2
x = 2
Therefore, the point is (2, 2).
To know more about Equation:
https://brainly.com/question/14686792
#SPJ5
help then you got them brains!
Answer:
its a
Step-by-step explanation:
8 divided by 1.6 is 5 , have a good day <3
what’s the difference between point A (3,4) and B (-1,4) on a coordinate plane?
Answer:
the difference between them is letter b would be on the left side in the negative and a is in the positive
Step-by-step explanation:
hoped this helped lmk if it did
Susie has a bag with 9 hair pins, 6 pencils, 2 snacks, and 5 books. What is the ratio of books to pencils?
Answer:
5:6 5books to 6 pencils
Answer:
5:6, 5 to 6 or 5/6
what sign makes this comparison true?
> OR < (less than or greater than)
-9/10 -7/10
Answer:
greater than because that is what it is your welcome
9 7/8 - ( -2 4/5 - 1/2)
Answer:
9 7/8 - ( -2 4/5 - 1/2) = 13.175
Step-by-step explanation:
Hope this is correct and helps.
Solve for x given 16 = 2x + 2( 4+ x)
Answer:
x=2
Step-by-step explanation:
16=2x+2(4+x). First distribute the 2 into the parenthesis (4+x):
16=2x+8+2x. Now combine the like terms:
16=4x+8. Now to get 4x by itself, subtract 8 to the left:
8=4x. Solve for x by dividing by 4:
2=x
PLSSSSS HELP!!
The graph below shows the price of different numbers of mats at a store: A graph is shown. The values on the x axis are 0, 2, 4, 6, 8, 10. The values on the y axis are 0, 21, 42, 63, 84, and 105. Points are shown on ordered pairs 0, 0 and 2, 21 and 4, 42 and 6, 63 and 8, 84. These points are connected by a line. The label on the x axis is Number of Mats. The title on the y axis is Price in dollars. Which equation can be used to determine p, the cost of b mats? p = 10.50 + b b = 10.50 + p b = 10.50p p = 10.50b
Answer:
p = 10.50 + b b = 10.50 + p b = 10.50p p = 10.50b
Step-by-step explanation:
The values on the x axis are 0, 2, 4, 6, 8, 10. The values on the y axis are 0, 21, 42, 63, 84, and 105. Points are shown on ordered pairs 0, 0 and ..
The graph below shows the price of different numbers of mats at a store: A graph is shown. The values on the x axis are 0, 2, 4, 6, 8, 10. The values on the y axis are 0, 21, 42, 63, 84, and 105. Po - the ... 21, 42, 63, 84, and 105. Points are shown on ordered pairs 0, 0 and 2, 21 and 4, 42 and 6, 63 and 8, 84.
Answer:
p = 10.50 + b b = 10.50 + p b = 10.50p p = 10.50b
Step-by-step explanation:
Help please!! and actually try to solve it this is a test and I wanna do good
Answer:
After doing the math, I came up with B and/or C could be the answer
HURRY PLEASE!!
Which of these could be the transformation? Choose all that are correct.
A reflection across the line x = 1
A reflection across the line y = 1
A translation 2 units to the left, and then a reflection across the y -axis
A translation 2 units to the right, and then a reflection across the y -axis
A reflection across the y -axis, and then a translation 2 units to the right
A rotation of 180° about the point (1,4)
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. In a particular region of a national park, there are currently 330 deer, and the population is increasing at an annual rate of 11% a. Write an exponential function to model the deer population in terms of the number of years from now. B. Explain what each value in the model represents . . Predict the number of deer that will be in the region after five years. Show your work.
Answer:
Formula : V = I (1 + R)^T , Deers after 5 years ≈ 556
Step-by-step explanation:
Exponential formula for final value 'v' - for initial value 'i' at growth rate 'r' for a period of time 't'
V = I (1 + R)^T
As per given deer case, I = 330 & R = 11% = 0.11
V = 330 ( 1 + 0.11 )^t
Predicted deers after 5 years, V = 330 (1.11)^5
330 x 1.685 = 556.05