Solve the system of equations-5x-7y=23and 3x+4y=12 by combining the equations
Answers
Answer:
Step-by-step explanation:
32
Answer:
x=8 and y= -9
Step-by-step explanation:
(-5x-7y=23)x3
(3x+4y=-12)x5
-15x-21y=69
15x+20y=-60
-y=9
y=-9
x=8
Related Questions
divide the polynomial 3x^4-6x^2-x/x=
Answers
Answer: 3x^3-6x-1
Step-by-step explanation:
Take out an x from everything. Numbers that have powers will just go down a power (ex- 3x^4 would go to 3x^3) and if you have just an x then it turns into one.
The polynomial by the division is equal to [tex]3x^3-6x-1[/tex]
What is a polynomial?They are mathematical expressions involving variables raised with non negative integers and coefficients(constants who are in multiplication with those variables) and constants with only operations of addition, subtraction, multiplication and non negative exponentiation of variables involved.
We are given the polynomial
[tex]3x^4-6x^2-x/x[/tex]
We need to divide the polynomial by x.
[tex]3x^4-6x^2-x/x[/tex]
Then we need to factor out x
[tex]x(3x^3-6x- 1)/x[/tex]
The answer is [tex]3x^3-6x-1[/tex]
Learn more about polynomials here:
https://brainly.com/question/27343162
#SPJ2
Quadrilateral A has side lengths 3, 4, 5, and 6. Quadrilateral B is a scaled copy of
Quadrilateral A with a scale factor of 2. Select all of the following that are side lengths of
Quadrilateral B. [choose 2]
05
06
07
8
9
Answers
Answer:
best bet is a im not 100 percent sure though
Which value is the solution to the equation 42 ÷ j = 6?
Answers
Answer:
[tex]j = 7[/tex]hope that helps!
The value which is the solution to the equation 42 ÷ j = 6 is; j =7
One variable equation:
According to the question;
The equation given is; 42 ÷ j = 6.To solve the equation; we can do Cross-product as follows;
42 = 6jj = 42/6
j = 7.
Read more on one variable equation:
https://brainly.com/question/21528555
Please can you help me
Answers
9514 1404 393
Answer:
x = 5
Step-by-step explanation:
In a parallelogram, the diagonals bisect each other. This means ...
PQ = PS
2x +15 = 5x
15 = 3x . . . . . . subtract 2x
5 = x . . . . . . . divide by 3
An online company offers a package that includes 2 games for $11.98 they also offer a package that includes 5 games for $24.95 Which package is a better deal?
FIND UNIT RATES!!!!!
Answers
Answer:
the package that has five games
Step-by-step explanation:
divide both
4.99
and 5.99 4.99 is btter
Convert the following point-slope form equation to slope-intercept form: y-2 = 3(x-2)
Answers
Answer:
y = 3x - 4
Step-by-step explanation:
Uhh........ I got to go walk my fish
A dog kennel boards dogs for $8 a day. The kennel will also groom a dog for $12. The DeVilles have $52 budgeted for caring for the dog while they are on vacation. How many days, d, can they put the dog in the kennel if they are going to have the dog groomed? Write an equation to model this situation and solve
Answers
Answer: See explanation
Step-by-step explanation:
From the question, we are informed that a dog kennel boards dogs for $8 a day, the kennel will also groom a dog for $12 and that DeVilles have $52 budgeted for caring for the dog while they are on vacation.
Let the number of days that they can put the dog in the kennel if they are going to have the dog groomed be represented by d.
Therefore,
8d + 12d ≥ 52
20d ≥ 52
d ≥ 52/20
d ≥ 2.6
Since DeVilles have $52 budgeted for caring for the dog, the number of days they can put the dog in the kernel will be 2 days.
What is the slope of the line through ( 3.3) and ( 1.1)?
Answers
Answer:
slope = -2
Step-by-step explanation:
slope = m = y2-y1/x2-x1
given points (-3,3) and (-1,-1)
plug in to slope formula
m = -1 - 3 / -1 - (-3)
m = -4 / 2
m = - 2
What is the value of 3 - 14?
Answers
Answer:
The answer is -11 .
What is f(x)=2x^2-8 ?
Answers
Joey Road his new bike around his block he traveled a total of 375 m it took him a total of 97 seconds what was his average speed
Answers
Answer:
I think his average speed is approximately 3.87 for every 1 second. I just divided 375 divided by 97 to see his average speed per second. I could be wrong tho
Solve x to the power of 2 = 4 where x is a real number. Please help fast
Answers
Answer:
It's 2
Step-by-step explanation:
X is 2 because if you multiply two by two you get 4
When Sarah passes a ball on a sidewalk to her friend, the ball bounces off at the same angle that it was thrown. Use the figure below to find the angle at which the ball hits the sidewalk
and bounces to her friend.
1000
Answers
a. 40 if you dont believe me just look at a 40 degree triangle then the pic
5x^2+3x-3=0 using equation method
Answers
9514 1404 393
Answer:
x = (-3±√69)/10
Step-by-step explanation:
Perhaps you want to find the solutions using the quadratic formula.
For the equation ...
ax² +bx +c = 0
The solution is given by the formula ...
[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
Here, we have a=5, b=3, c=-3, so the values of x are ...
[tex]x=\dfrac{-3\pm\sqrt{3^3-4(5)(-3)}}{2(5)}\\\\\boxed{x=\dfrac{-3\pm\sqrt{69}}{10}}[/tex]
X + 2x + 12y + x Apply the properties of operations by combining like terms to produce an equivalent expression. Prove your answer by showing your work.
Answers
Answer:
4(x+3y)
Step-by-step explanation:
Given the expression X + 2x + 12y + x
First thing to do is combine the like terms;
X + 2x + 12y + x
= x+x+2x+12y
Add the like terms(Addition property)
= 4x + 12y
Then factor out the like terms
= 4(x+3y)
Hence the equivalent expression is 4(x+3y)
Is there no help at all?
Answers
Answer:
Wait what do you mean
Step-by-step explanation:
What is the greatest common factors or 45 and 100
Answers
Answer:
5
Step-by-step explanation:
5 is the gcf of 45 and 100
the answer is 5,,,,,,,,,,,,
What's your favorite color and why?
have to create graph for math class
Answers
Answer:
blue
Step-by-step explanation:
love the sky
Answer:
Pink
Step-by-step explanation:
Because it’s pretty and makes me feel at ease
The perimeter of a kite is 50 mm. The length of one of its sides is 1 mm more than twice the length of another. Find the length of the LONGEST side of the kite. Only write the value of the longest side.
Answers
Answer:
The length of the longest side is 13mm
Step-by-step explanation:
Represent the two sides with a and b, where a is the longest
[tex]Perimeter = 50[/tex]
[tex]a=b + 1[/tex]
Required
Determine the length of the longest side
Perimeter of a kite is calculated as thus:
[tex]Perimeter = 2(a + b)[/tex]
Make b the subject in [tex]a=b + 1[/tex]
[tex]b = a -1[/tex]
Substitute a - 1 for b and 50 for Perimeter in [tex]Perimeter = 2(a + b)[/tex]
[tex]50 = 2(a + a - 1)[/tex]
Divide through by 2
[tex]25 = a + a - 1[/tex]
[tex]25 = 2a- 1[/tex]
Add 1 to both sides
[tex]25 + 1 = 2a - 1 +1[/tex]
[tex]25 + 1 = 2a[/tex]
[tex]26 = 2a[/tex]
Solve for a
[tex]a = 26/2[/tex]
[tex]a = 13[/tex]
Hence, the length of the longest side is 13mm
Find the discriminant of
Answers
Answer:
76
Step-by-step explanation:
Substitute in the values of a, b, and c.
[tex](-10)^2-4(3*2)[/tex]
Evaluate the result to find the discriminant.
[tex]76[/tex]
Answer:
76
Step-by-step explanation:
im shmaht
find the slope of a line parallel to each given line y = -2x - 5
Answers
Answer:If we have a line given by the equation y=5x−1, what would be the equation of a line parallel to it? A line parallel to this will have the same slope and a different intercept. Since, the slope in the equation is m=5 the slope for the parallel line will be m=5.
Step-by-step explanation:
Answer:
m= -2
Step-by-step explanation:
1
A bag contains 100 marbles. Some are red and the rest are black. There
are 3 red marbles for every 1 black marble. How many red marbles are in
the bag?
Answers
Answer:
there are 33 marbles
Step-by-step explanation:
100÷3
A ball is thrown from the top row of seats in a stadium. The function h(t)=-16t^2+64t+80 gives the height, in feet, of the ball t seconds after it is thrown. How long will it be before the ball hits the ground?
I already found the maximum height, it's at 144 feet
A. 5
B. 16
C. 2
D. 9
Answers
Answer:
5 seccsStep-by-step explanation:
Given the modeled function of the height expressed as;
h(t)=-16t^2+64t+80
The ball hits the ground when h(t) = 0 (when the height is zero)
Substitute into the function and find t;
0 =-16t^2+64t+80
divide through by -16
0 = t²-4t-5
Factorize;
t²-4t-5 = 0
t²-5t+t-5 = 0
t(t-5)+1(t-5) = 0
(t+1)(t-5) = 0
t + 1 = 0 and t-5 = 0
t = -1 and t = 5
Time can't be negative
Hence it will take the ball 5secs before it hits the ground
Your Benz Wagon has (f) gallons of gas. Your Benz Wagon uses (g) gallons of gas
for every mile traveled. Enter an equation for the amount of gas remaining, (r), in
the tank after (m) miles.
4) Use ONLY the variables (f. g, m, r) used in the situation above. DO NOT put
space in your answer.
*
Your answer
This is a required question
Back
Next
Answers
Answer:
r=f-(gm)
Step-by-step explanation:
Benz wagon has f gallons of gas
We are now told that Benz Wagon uses (g) gallons of gas for every mile traveled
Thus, amount of gas used after "m" miles is; gm
We are given r as the amount of gas remaining.
Thus;
r=f-(gm)
On Saturday, there were seven people chosen at random to fill out a survey about how much time they spend each week on the treadmill. Their survey results are shown below on the data table. Use the table to compute the average amount of time spent on the treadmill on Thursday this week. Type a numerical answer in the space provided. If there is more than one answer, use a comma to separate your answers.
Answers
Answer:
25
Step-by-step explanation:
15+24+28+34+18+26+30= 175
175/7 = 25
There are 2.54 centimeters in 1 inch. There are 100 centimeters in 1 meter.
To the nearest inch, how many inches are in 13 meters? Enter the answer in the box.
inches
Answers
Answer:
Answer: 512 inches
Step-by-step explanation:
Unit Conversion
We need to recall two basic unit conversions for length:
1 inch = 2.54 cm
1 meter = 100 cm
We are given a length of 13 meters. Converting to centimeters:
13 * 100 = 1300 cm
Now convert to inches dividing by 2.54:
[tex]1300 / 2.54 \approx 512[/tex]
Answer: 512 inches
Answer:
512 inches
Step-by-step explanation:
can someone help me please :( it’s stressing me out
Answers
20x+6+9x=180
add the values of x together
29x+6=180
subtract 6 from each side
29x=174
divide each side by 29
x=6
Given h(x) = -2 – 1, find h(6).
Answers
If the turkey says gobble, gobble, gobble, and a peach says cobbler, cobbler, cobbler, what would a computer say?
Answers
Answer: error
Step-by-step explanation:
Answer:
goog le goo gle go ogle
Step-by-step explanation:
sorry but the problem is that brainly thinks Goo gle is too inappropriate of a word
What is the value of x using the CORRECT simplified equation?
34=−2+9x+16+x
A
34=8x+18; x=2
B
34=9x+18; x=2
C
34=10x+14; x=2
D
34=7x+17; x=17/7
Answers
Answer:
A SIR
Step-by-step explanation:
MAY I GET BRIANLY PLEASE SIR