Answers
Answer:
x = - 8/23
y = 40/23
Step-by-step explanation:
-5x- y = 0
and
-8x+3y = 8
The first step to solve this would be to get what one of the two variables equal. The easiest in this case is y from the first equation.
-5x-y = 0
-y = 5x
y = - 5x
Now you can take this y value and plug it into the section equation.
-8x + 3(-5x) = 8
-8x - 15x = 8
-23x = 8
x = - (8/23)
Once you get the x value you can plug it back into equation one to get y's value
-5*-(8/23) - y = 0
40/23 - y = 0
y = 40/23
Related Questions
solve by substitute. 9y+8=x. -2x+8y=-36
Answers
Answer:
Let's solve for x.
9y+8=x
Step 1: Flip the equation.
x=9y+8
Answer:
x=9y+8
Let's solve for x.
−2x+8y=−36
Step 1: Add -8y to both sides.
−2x + 8y + −8y = −36 + −8y
−2x = −8y − 36
Step 2: Divide both sides by -2.
−2x / −2 = −8y − 36 / −2
x=4y + 18
Answer:
x=4y + 18
Hope it helps
Please mark me as the brainliest
Thank you
Answer:
(26, 2)
x = 26
y = 2
Step-by-step explanation:
Given:
9y + 8 = x
-2x + 8y = -36
Substitute (9y + 8) for x in the second equation.
-2(9y + 8) + 8y = -36
Then distribute and solve.
-18y + (-16) + 8y = -36
Combine like terms.
-10y - 16 = -36
-10y = -20
y = 2
Solve for x by substituting the y value (2) into 9y + 8 = x.
9(2) + 8 = x
18 + 8 = x
x = 26
Therefore, the solution is (26, 2) in terms of (x, y).
What is the value of -2 1/6 -1 1/4 + 1 3/4
a. -1 2/3
b. -1 1/3
c. 2 1/3
d. 2 2/3
Answers
explanation: -2 1/6 - 1 1/4= -13/6 - 5/4= -41/12 ; 1 3/4= 7/4 ; -41/12 + 7/4= -5/3 ; -5/3= -1 2/3
mickel and 4 friend bought a total of 95 raffle tickets if the ticket were dived equaly among themselves how many tickets did each person get?
Answers
Answer:
19
Step-by-step explanation:
5 people in total, divide equally from 95
Answer:
Step-by-step explanation:
95/4=23.75
Round 23.75 --> 24.00 raffle tickets each.
PLEASE HELP ASAP I can’t fail this
Answers
Answer:
-5,5
5,5
Step-by-step explanation:
Solve the equation.
1.5x + 6 = 18
Answers
Hope this helps!!!
Subtract 6
1.5x=12
Divided by 1.5
X=8
I buy a T.V for 10,000 and sell it at profit of 20%. how much do I get
Answers
Answer:
12,000
Step-by-step explanation:
Cost Price of T.V. = Rs. 10000
Profit percent = 20%
Profit = Profit% of C.P.
= 20 divided by 100 multiply by 1000
= Rs 2000
Selling price = C.P. + Profit
= 10000 + 2000 = 12000
Hence, the answer is Rs. 12,000 on selling the T.V.
Hope this helps you!
Which set of ordered pairs represents a function
1) {(0,4)(2,4)(2,5)}
2){(6,0)(5,0)(4,0)}
3){(4,1)(6,2)(6,3)(5,0)}
4){(0,4)(1,4)(0,5)(1,5)}
And the other one I put a picture of but I don’t know if it worked lol
Answers
In both examples, the “x’s” are never repeated!! Each x is unique. As soon as you have two x values with DIFFERENT y values, it is no longer a function
_____% of 145 = 75
48.3%
193.3%
76.5%
51.7%
Answers
Answer:
51.7%
Step-by-step explanation:
P x 145 = 75
P = 75 / 145
P = .5172
P = 51.7%
Have a nice day! <3
Determine whether the graphs of the given equations are parallel, perpendicular, or neither.
Y= -2x+3
2x+y=7
A. Parallel
B. Perpendicular
C. Neither
Answers
Answer:
A
Step-by-step explanation:
Because the have the same slope.
The second equation solving for y is:
Y= -2x+7.
Both equations have the same slope of -2
Answer:
Parallel
Step-by-step explanation:
If lines have the same slope, then they are parallel. If lines have slopes that are opposite reciprocals of each other, then they are perpendicular. If neither one of those statements are true, then the answer is neither.
1) First, find the slope of the first equation. [tex]y = -2x + 3[/tex] is already in [tex]y = mx + b[/tex] format, or slope-intercept form. The [tex]m[/tex], or the coefficient of the x term, represents the slope. Thus, by looking at the equation, -2 is the slope of [tex]y = -2x + 3[/tex].
2) Second, find the slope of the second equation. [tex]2x + y = 7[/tex] is in standard format, but we can change it to slope-intercept format by isolating the y like so (just subtract both sides by 2x):
[tex]2x + y = 7 \\y = -2x + 7[/tex]
Now that it is in slope-intercept form, we can look at the coefficient of the x term, or [tex]m[/tex], to find the slope. That number is -2, thus the slope of [tex]2x + y = 7[/tex] is -2.
3) We found out that the slopes of both equations are -2. Thus, since they share the same slope, the lines are parallel.
The school that Mary goes to is selling tickets to a fall musical. On the first day of ticket sales
the school sold 14 adult tickets and 12 child tickets for a total of $260. The school took in $210
on the second day by selling 7 adult tickets and 14 child tickets. What is the price each of one
adult ticket and one child ticket?
A) adult ticket: $9, child ticket: $14 B) adult ticket: S10, child ticket: $10
C) adult ticket: $14, child ticket: $12 D) adult ticket: $7, child ticket: $13
Answers
Answer:
c would be the answer
Step-by-step explanation:
12. The tomb of Gunbad-Kabud in Maragheh, Iran is the shape of a decagonal tower and has a side length of approximately 8 feet. Determine the distance from the center of the tomb to the outside wall.
Answers
Answer:
The distance would be 12.31073415. Rounded, 12.31
Step-by-step explanation:
First off, we know a decagon has 10 sides. Secondly, it is given that the total side length is 8 feet- split in half it's 4 and 4 (this will come into play in the formula). Next, we want to find the angle measure of one of the isosceles triangles. Thus, do 360/10 which gives 36. Then do 36/2 which equals 18. This is the angle measure we need. Now that we have the necessary information, we can set up the formula. Following SOHCAHTOA, we can see that we need to use the tangent to find the apothem since our opposite side length of 4 is given. Set up the equation like so: tan18 = 4/a. When plugged in and solved, the answer of 12.31073415 is received.
I hope that helped!
what is the definition of the word PER?
Answers
Answer:
for each, by means of.
Step-by-step explanation:
For each
Or
By means of
The Empire State Building in New York City is 1,454 feet tall. The observatory on the 86th floor is 404 feet from the top of the building. How high is the observatory above the ground?
Answers
Answer:
1,050 ft
Step-by-step explanation:
PLEASE HELP, I need this test done and something not failed. I dont understand.
Answers
Answer:
XVW and WVT
Step-by-step explanation:
Two angles are supplementary angles when the sum of their measures is equaled to 180 degrees.
180 degrees = a line.
YVZ and WVU are Vertical Angles
YVZ and ZVT are not straight lines together.
XVW and WVU are on the same straight line but you have to add UVT in order to get 180.
XVW and WVT are the only ones that look like they can add up to 180 degrees.
XVW and WVT should be the answer, I really hope this helps!
Assume that lines that appear to be tangent are tangent. O is the center of the circle. What is the value of x?
Answers
9514 1404 393
Answer:
x = 20, or 125
Step-by-step explanation:
We cannot tell the angle x is intended to refer to. So, here are two answers. Choose the one you think applies.
__
The triangle that includes both marked angles is a right triangle. (The tangent meets the circle at right angles to the radius.) So, the angle x° at the external point is the complement of the marked central angle.
x° = 90° -70°
x = 20
__
If x° is referring to the exterior angle associated with the isosceles triangle within the circle, then its measure is the supplement of the interior base angle of that triangle. It is ...
x° = 180° -(180° -70°)/2 = 90° +70°/2
x = 125
Guys last question pls help
Answers
Answer:
y=-7x-9
Step-by-step explanation:
7. Determine the type and number of solutions of -4x2 – 3x+7= 0
one real solution and one imaginary solution
O one real solution
O two real solutions
two imaginary solutions
Answers
Find the total surface area of this triangular prism.
30 cm
18 cm
7 cm
24 cm
Answers
Answer:
696 cm because
is root 2 /1 is a rational number?
Answers
Answer:
yes
Step-by-step explanation:
PLEASE HELPPPPPP!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
B is the correct answer for this
Answer:
Step-by-step explanation:
it's c
21.57 x 0.12 =
Divided by a power of 10
Answers
Answer:
Answer vary :
0.25884
Step-by-step explanation:
honestly in my opinion that’s the answer.
1. 21.57 times 0.12 = 2.5884
then divide 2.5884 by the power of ten, wich is moving the decimal to left with how many zeros their are.
-0.25884
since in 10 their is only one 0 we moved the decimal only one time to the left.
and that’s how I came to that solution.
Write the decimal as a percent.
0.0046 = %
Answers
Answer:
0.46%
Step-by-step explanation:
0.0046*100%= 0.46%
A bridge is 3911.1 meters long. Which of the following best describes the length of the bridge in kilometers?
Answers
Answer:
3.9111 km
Explanation:
The length in kilometers is equal to the meters divided by 1,000. So, if you divide 3911.1 by 1,000 that equals 3.911. You move the decimal point to the left 3 times based on the number of zeros.
PLZ HELP ITS ALL MY POINTS
Answers
Answer:
30 cm
Step-by-step explanation:
Sorry if im wrong
PLEASE HELP ( I can mark if brainlest, no fake answers please)
Answers
Answer:
$80
Step-by-step explanation:
plug 40 into each equation for x
50+12(40)
simplify
50+480
simplify
530
10+15(40)
simplify
10+600
610
now subtract 530 from 610
610-530
80
Red balloons is 15 blue balloons is 10 what is the ratio of red to blue
Answers
Answer:
3:2
Step-by-step explanation:
15 to 5 in simplest form you caan multiply by 5 so in simplest form its
5x3=15
5x2=10
so anwswer is 3:2
plz mark brinliest
what is the answer?
Answers
Answer:
Step-by-step explanation:
4/5x<=2
x is less than or equal to 2.5
A sweater is on sale for 12% off. The sale price is $44.00. What is the original amount of the sweater?
Answers
==================================================
Work Shown:
x = original price
y = sale price
d = discount = amount saved
d = 12% of x = 0.12x
y = x - d = x - 0.12x = 0.88x
Note how 0.88 = 88%, and this represents the percentage you have to pay if you get 12% off.
We're told the sale price is y = 44, so this leads to...
y = 0.88x
44 = 0.88x
0.88x = 44
x = 44/0.88
x = 50
The original price was $50
---------------------
Check:
If the original price was $50, then the amount you save is 0.12*50 = 6 dollars, which is the discount.
The sale price is 50-6 = 44 dollars which matches up with what your teacher gave you. The answer is confirmed.
find the slope.make sure to reduce
Answers
5.-Exprese como fracciones ,lo siguiente: a) Los 4 meses del año b) Un día de la semana c) Las tres provincias de la región Costa ecuatoriana
Answers
Answer:
Step-by-step explanation:
Expresar lo siguiente como fracciones.
a) Los 4 meses del año
Hay 12 meses en un año. Entonces, la fracción de 4 meses de 12 meses en un año es:
= 4/12
= 1/3
b) Un día de la semana
Hay 7 días en una semana.
Así, la fracción de 1 día en una semana será:
= 1/7
c) Las tres provincias de la región Costa ecuatoriana
En la región de la Costa Ecuatoriana, hay cinco provincias presentes.
Ahora, la fracción de tres provincias del total de cinco provincias de la región de la Costa Ecuatoriana será:
= 3/5