Answer:
x = 18/25, y = -198/25
Step-by-step explanation:
Given the system of equations:
2x – y = 13x
-3x + 2y= -18
You can combine these two equations effectively by multiplying the first equation by 2, and adding because -2y and 2y will cancel out when added. So you will be left with only x terms
( 2x - y = 13x ) × 2
+ -3x + 2y = -18
________________
2(2x) - 3x + 2(-y) + 2y = 2(13x) - 18
4x - 3x - 2y + 2y = 26x - 18
x + 0 = 26x - 18
x = 26x - 18
________________
[Then use the properties of equality to simplify the expressions in the equation to derive the value of x]
x - x = 26x - 18 - x (subtraction property of equality)
0 = 25x - 18
0 + 18 = 25x - 18 + 18 (addition property of equality)
18 = 25x
18 / 25 = 25x / 25 (division property of equality)
18 / 25 = x
x = 18 / 25 (symmetric property of equality)
_______________
Now with the value of x, we can find the value of y by substituting the value of x into the variables of the top equation {2x – y = 13x} because this involves the simpliest steps.
Given x = 18 / 25.
2x – y = 13x → 2x – y + y = 13x + y → 2x = 13x + y → 2x – 13x = 13x + y – 13x → -11x = y → y = -11x.
Now that we know y = -11x, y = -11(18/25) which is - (11 × 18) / 25 = -198/25
Someone plz help me with this
Answer:
2.20 y axis 2years T x axis is the answer
Ala has 24 dollars, Barb has 66 dollars, and Sophia has as many dollars more than Ala as she has less
than Barb.
How many dollars does Sophia have?
A) $35
B) $42
C) $45
D) $48
Answer:42
Step-by-step explanation:
It is recommended that a certain medicine be stored in temperatures above 34°F and below 71°F. Enter a
compound inequality to show the acceptable storage temperatures for this medicine. Use t as your
variable.
Answer:
The inequality is;
34°F < t < 71°F
Step-by-step explanation:
Here, using t as the variable, we want to write an inequality
We want to write an inequality above 34 but below 71
The inequality will be;
34°F < t < 71°F
two times x divide five
Answer:
2x/5
Step-by-step explanation:
Please help! :)
Will give brainliest, thank you
Answer:
y=-3/5x+2
Step-by-step explanation:
slope is -3/5
starting point is 2
14 fish out of 100,000 are blue, what would this be as a percentage?
Answer:
0.014%
Step-by-step explanation:
We need to write 14 out of 100,000 as a fraction. Which makes 14/100,000. Now 14/100,000 as a percent is 0.014%
9. Marika Perez's gross biweekly pay is $2,768.00 How much does she earn annually.
$66,432.00
$71,968.00
O $33,216.00
$143,936.00
Answer:
$66,432.00
Step-by-step explanation:
I believe its this sorry if I'm wrong
Twice Sam's age added to half her mother's age is 48. Three times her age less one third of her
mother's age is 33. How old are Sam and her mother?
Answer:
Sam is 15 and her mother is 36
Step-by-step explanation:
Let Sam's age be x and her mother's age by y
We can figure out Sam and her mother's age by representing these scenarios using equations with variables and solving the system using elimination
2x+y/2=48
3x-1/3y=33
You start by making all the numbers in both the equations whole
2(2x+y/2=48)
3(3x-1/3y=33)
Becomes:
4x+y=96
9x-y=99
Add together to eliminate y
13x/13=195/13
x=15
Now that we have x we can plug the value into the x in the equations to give us the y-value
2x15+y/2=48
30+y/2=48
30+y/2-30=48-30
y/2=18
2 X y/2=18 X 2
y=36
Therefore x=15 and y=36
HELP MY PARENTS ARGUING ABOUT THIS ASSIGNMENT PLEASE DO THIS HURRY!!!
(-6)(-2)(-1) =
Brainliest 5 stars thanks!
Answer:
B
Step-by-step explanation:got 100%
Answer:
B
Step-by-step explanation:
There are 60 students in the school band. 30% of them are sixth graders, 50% are seventh graders, and the rest are eighth graders. a. How many band members are sixth graders? b. How many band members are seventh graders? c. What percentage of the band members are eighth graders? Explain your reasoning.
Answer:
there is 12 6th graders 30 7th graders and 12 8th graders and 20% is 8th graders please mark brainlyist
Help please im very lost
Answer:
pretty sure it is zero
Step-by-step explanation:
There are two x's of the same value so presumably the line is vertical which would mean it has no slope and could only be described as zero
Answer:
Step-by-step explanation:
Find the slope. Use m = y2-y1/x2-x1 form
So, -4-(-17)/-6-(-6)
This = 13/0
Which = undefined.
The slope is undefined.
8th POING GIVEAWAY (lol my hands r tired so srry for the typo)
Answer:
ooo~ yass ʕ·ᴥ·ʔ
(lil person ty)
ヾ(＠⌒▽⌒＠)ﾉ
(virtual hug (∪ ◡ ∪)
Thank you so much, I got it UvU
Select the slope-intercept form of an equation for a line with y-intercept –5 and slope 2. A. x = 2x + 5 B. y = 2x – 5 C. y = 5x – 2 D. y = –5x + 2
Answer:
y=2x-5
Step-by-step explanation:
slope intercept form is y=mx+b
m=slope
b=y-intercept
Answer: y = 2x - 5
slope-intercept form ⇒ y = mx + b
⇒ where mx is the slope,
⇒ b is the y-intercept
⇒According to the question;
mx which is the slope = 2
b the y-intercept = -5
∴ the equation is
Find the solution of the system of equations.
First equation,
- 2x - 5y = -15
Second equation,
-9x + 15y = -30
Will mark brainliest
Answer:
the answer to your equation is (5,1) in point form or x=5,y=1 in equation form.
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation. hope this helps. :)
Find the midpoint of a line with endpoints of (2, 6) and (10, 18)
Answer:
6, 12
Step-by-step explanation:
10-2=8 8/2= 4 2+4= 6
18- 6= 12 12/2= 6 6+6=12
Help me plz answer the both of them
Answer:
23.Use RHS
24.Use axiom and make 2angle equal then triangle will be equal and it becomes congruent
Answer:
23) +) JL ≅ MO (given)
+) KL ≅ NO (given)
+) ∠K = ∠N = 90° (given)
=> ΔJKL ≅ ΔMNO (HL)
24) +) AC ≅ EC (given)
+) BC ≅ DC (given)
+) ∠ECD = ∠ ACB (2 opposing angles)
=> ΔABC ≅ ΔEDC (SAS)
Step-by-step explanation:
A number with three digits will open up this lock. These clues will help you find it before the turkey burns hard as a rock. Drawing a number line might help you too, Enter the number below when you are through! My number has ones, tenths, and hundredths Rounding to the nearest whole number, you get 4 Rounding it to the nearest tenth, you get 3.5 The number of hundredths is greater than 3 7
Answer:
7.77
Step-by-step explanation:
nearest one = 4
nearest ten = 0.35
nearest hundreth = more than 37
--4
-3.5
<.37-
+__
7.77
i think thats it. pls dont let turkey roast alive D:
Analyze the table showing the number of days and cost of the trip.
Answer:
The answer is 25
Step-by-step explanation:
Marcus can rap about 42 words per minute. If he raps at this rate for 30 minutes without stopping, about how many words will he rap?
A) 1260
B) 2100
C) 2520
D) 4200
PLEASE ANSWER FAST!! WIIL GIVE BRAINLIEST
Which equation correctly shows how to determine the distance between the points (9,-2) and (6,3) on a coordinate
grid?
Od-V(6-3)?+ (9-(-2))?
Od-V(6+3)²+(9+(-2))?
)9
O ơ= 6 – 9) + (3-(-2)
d-/6+9)2+(3+(-2)2
List all 3-digit numbers which are 19 times the sum of their digits.
Answer:
114, 133, 152, 171, 190, 209, 228, 247, 266, 285, 399
Step-by-step explanation:
These are all the three-digit numbers that are a multiple of 19.
Answer:
114, 133, 152, 171, 190, 209, 228, 247, 266, 285, 399
PLS GIVE BRAINLIEST
If Tai Reed's average monthly expenditure for 4 months is $2,303.50, what is the total of his expenditures for that period? *
685.75
575.85
9,214.00
12,545.50
TIMEDD TEST!!
Help pls!
U don’t need to explain
help asap i don't understand
x+4/12=-5/3
3(x+4)=12-5
3x=7
x=7/3
x=2.3
What is 50% of.......55
Can sum1 help me plz
A square garden has an area of 53.29 square meters. What is the length of each side of the garden?
1) 3.8m
2) 7.3m
3) 13.3m
4) 26.6m
Answer:
7.3m
Step-by-step explanation:
Area is l * w
The length and width of a square are the same, so that means we can use square root for this problem.
The square root of 53.29 is 7.3
7.3*7.3 = 53.29 (<- to double check)
the lenght of the floor is 32 m longer than its width and there is greater than 200 square meters. you will cover the floor completely with tiles. what will be the possible dimension of the floor?
What is Fourteen minus four times y is equal to y increased by 4