y=x-3
y+3x=1 solve by substitution
Answer:
x = 1
Step-by-step explanation:
x - 3 + 3x = 1
4x - 3 = 1
4x = 4
x = 1
Answer:
x=1, y=-2
Step-by-step explanation:
According to the substitution property, if x = y, then x can be substituted for y in any equation, and y can be substituted for x in any equation.
We are already given the values:
y=x-3
y+3x=1
We can substitute y into the equation.
As so-
[tex]x-3+3x=1[/tex]
Combine common terms:
[tex]4x-3=1[/tex]
Now solve for x. To solve for a variable, we must isolate it:
Add 3 to both sides:
[tex]4x=4[/tex]
The last thing, 4 is being multiplied to x, so we must divide it to both sides to isolate the variable.
[tex]x=1[/tex]
Now we can just substitute the x value into the y equation:
[tex]y=x-3\\y=1-3\\y=-2[/tex]
It is always better to check our answers, we can substitute our x and y into the equation:
[tex]-2+3(1)=1\\-2+3=1\\1=1[/tex]
We are right! :)) Hope it helps!
x=1, y=-2
(1,-2)
Multi-Step Equations - PracticeCheck your SolutionCheck your SolutionCheck your SolutionCheck your SolutionCheck your Solution123456-3m - 5 = 5m - 136(y + 7) = 2(y - 3)3x + 2(x - 5) = 2510q + 3q + 5 = 2(q - 3)(x + 6) = 1323(x - 9)
Answer:
i don't get what i should do its all messed up
Step-by-step explanation:
WILL SOMEONE PLEASE ANSWER THE MATH QUESTIONS I HAVE POSTED IF I GET ONE MORE FILE IM GONNA OFF MYSELF
Dan wants to buy carpet. To cover his hole living room, except for the tiled floor. The tiled floor is 4 5/6 ft by 2 1/3. Find the area the carpet needs to cover
Answer:
11.2777778 feet (11 feet 321⁄64 inches)
Step-by-step explanation:
Answer:
11 27/100
Step-by-step explanation:
L (length) times W (width) = A (area)
11.1.21 A survey asked, "How many tattoos do you currently have on your body?" Of the males surveyed, responded that they had at least one tattoo. Of the females surveyed, responded that they had at least one tattoo. Construct a % confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. Let represent the proportion of males with tattoos and represent the proportion of females with tattoos. Find the % confidence interval for . The lower bound is nothing. The upper bound is nothing. (Round to three decimal places as needed.)
Complete question :
The Harris Poll conducted a survey in which they asked, "How many tattoos do you currently have on your body?" Of the 1205 males surveyed, 181 responded that they had at least one tattoo. Of the 1097 females surveyed, 143 responded that they had at least one tattoo. Construct a 95% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval.
Answer:
(−0.0085 ; 0.0481)
Step-by-step explanation:
Given that :
n1 = 1205 ; x1 = 181 ; n2 = 1097 ; x2 = 143 ; α = 95%
Zα/2 = 1.96 ( Z table)
Confidence interval : (p1 - p2) ± E
E =Zα/2 * √[(p1q1/n1) + (p2q2/n2)]
p1 = x1 /n1 =181/1205 = 0.1502
q1 = 1 - p1 = 1 -0.1502 = 0.8498
p2 = x2/n2 = 143/1097 = 0.1304
q2 = 1 - p2 = 1 -0.1304 = 0.8696
E = 1.96 * √(0.0001059 + 0.0001033)
E = 0.0283
p1 - p2 = 0.1502 - 0.1304 = 0.0198
Lower boundary = 0.0198 - 0.0283 = −0.0085
Upper boundary = 0.0198 + 0.0283 = 0.0481
(−0.0085 ; 0.0481)
Can someone seriously help me!!!!!
Answer:
Step-by-step explanation:
This should help I hope
What is 11 3/6 rounded to the nearest
Answer:
12
Step-by-step explanation:
Can someone help me with this one?
Answer:
well I can see not see the graph so for this the + whatever is the y intercept which means when the line goes through the y axis and with the X find a point that is at the tip of a square then count up or down and if you count up and over it is positive and down and over it negative if i cann the graph I would love to help you.
A plataform is made of two rectangular prisms
Answer:
12 cubic meters
Step-by-step explanation:
Large - 4x3x2=24
Small - 2x3x2=12
24-12=12
Will give brainliest if anyone answers this one
LOCKER NUMBERS What is the probability that a 6-digit locker combination with the digits 3, 5, 7, 3, 5, and 2 is the number 53-27-35?
A.1/90
B.1/180
C.1/720
D.1/360
An employee put $10,000 in a retirement
account that offers 4% interest
compounded annually.
The employee makes no additional deposits or
withdrawals. Which amount is closest to the interest
the employee will have earned at the end of 12 years?
A) $4,520.14
B) $5,200.36
C) $6,010.32
D) $7,340.18
PLS ANSWER ASSP WILL GIVE BRAINLIEST ANSWER
C. $6010, I plugged the information into a simple compound interest calculator.
. Suppose that the average score in a statistics test is 84 with a standard deviation
of 4. According to Tchebysheff’s theorem, what percentage of the students have
a grade of at least 72 and at most 96?
Answer:
96
Step-by-step explanation:
What shape are the faces, other than the base,
of a pyramid?
Answer:
A triangle
Step-by-step explanation:
I need help and if I can I will give brainilest
Answer:
8000
Step-by-step explanation:
Total number of homes in given data is 7+33+56+42+12 = 150
Now out of 150 there is 12 homes who have 4 or more phones
Let's set up proportions
150 / 12 = 100,000 / X
x=100000×12 /150
X=8000
I’ll give points + brainalist for the correct answer (:
Answer:
x=18
Step-by-step explanation:
since they are vertical angle they are the same so since its 2x divide 36/2=18
Answer:
x=18
Step-by-step explanation:
[tex]2x = 36 \\ x = \frac{36}{2} \\ x = 18[/tex]
Does the equation below represent a
direct proportion? If yes, identify
the constant of proportionality.
х = 6у
A. No
B. Yes, 36
C. Yes, -6
D. Yes, 1/6
Step-by-step explanation:
The given equation is :
x = 6y ...(1)
Here,
x and y are variables and 6 is a constant number
It means,
x and y are related directly to each other i.e.
x ∝ y
or
x = ky .....(2)
Comparing equation (1) and (2)
k = 6
Hence, yes they are in direct proportion and the value of constant of proportionality is 6.
Answer:
yes / 1/6
Step-by-step explanation:
HELP WILL GIVE BRANLIEST
What is the balance for B?
DEPOSITS WITHDRAWALS
BALANCE
$565.00
$50,00
А
DATE DESCRIPTION OF TRANSACTION
7/1
7/5
Babyutting
717
Birthday money
7/12
Cell phone bi
7/15
Car Insurance
$95.00
В
$39.20
С
$45.20
D
Lunch with friends
$15.70
E
7/18
7/19
Babysitting
$60.00
F
O 609.90
O 615.00
O 625.60
Ооооо
O 669.90
670,80
O 710.00
1 point
What is the balance for C?
Which side lengths form a right triangle?
Answer:
Answer:[tex] \huge\mathfrak\pink{S} \huge\mathfrak\purple{o} \huge\mathfrak\blue{l} \huge\mathfrak\red{u} \huge\mathfrak\green{t} \huge\mathfrak\pink{i}\huge\mathfrak\purple{o}\huge\mathfrak\red{n}\huge\mathfrak\orange{➔}\ [/tex] Pythagoras law:h²=p²+b²
needed to apply
4²+8²=12²
80≠144 not a right angled triangle
again
2²+√5²=3²
9=9/
side are a right angled triangle
again
2²+2²=(√8)²
4+4=8
8=8
side are a right angled triangle
please help me In exponents we have to write
Answer:
1. -3/13
2. (simplified) 8 / (exponential form) 2^3
3. 1265625/16384
4. 5
Step-by-step explanation:
no need for explanation just try the app Photo math (no space in the photo and math)
graph x + 4= -8(y-2)^2
Answer:
It should be B!
Step-by-step explanation:
The graph looks small and on the left second quadrant
Answer:
Its b
Step-by-step explanation:
Just got it right on edge
Calculate the area of the following image:
A bag contains three yellow tickets numbered on to three. The bag also contains four green tickets numbered one to four. What is the probability of randomly picking a ticket that is yellow or has an even number
Answer:
6/7
Step-by-step explanation:
P(yellow or even) = 3/7 + 3/7 = 6/7
Can somebody give me the answer to this question please
Answer:
B
Step-by-step explanation:
Football has the highest number of votes in the chart.
Find the distance between -4 and 6 on the number line .
Answer:
10
Step-by-step explanation:
The formula for finding distance between 2 points on a number-line is absolute value. We need to find the absolute value of -4+6. |-4| + |6| = 10
Absolute Value negates any negatives.
Need the answer. Pic to describe.
Answer:
Step-by-step explanation:
6 - 3a=21 whats the answer to that i have a hard time thinking about it.
Answer:
[tex]a = - 5[/tex]
Step-by-step explanation:
[tex]6 - 3a = 21 \\ - 3a = 21 - 6 \\ - 3a = 15 \\ \frac{ - 3a}{ - 3} = \frac{15}{ - 3} \\ a = - 5[/tex]
Hope this helps you.
Can I have the brainliest please?
Answer:
a = -5
Step-by-step explanation:
When you're solving a question like this, your aim is to get the unknown (in this case 'a') by itself on one side of the equation. You do this by adding/subtracting/multiplying/dividing, whatever is necessary for the question. Note that if you do something to one side of the equation, you must do the same to the other.
6-3a=21
First let's get rid of the 6: subtract 6 from both sides.
6-6-3a=21-6
-3a=15
Now let's get rid of the -3: divide both sides by -3.
-3a=15
-3a/-3 = 15/-3
a= -5
. El siguiente cuadro muestra el porcentaje de votación que alcanzaron los
cuatro partidos en las últimas elecciones para alcaldes provinciales, en una
provincia en la que votaron 65 000 electores.
Partido %
Progreso posible 42%
Bienestar para todos 28%
Todos unidos 16%
Camino al éxito 12%
Votos nulos o en blanco 2%
¿Cuántos votos más debió obtener el candidato del partido “Bienestar para
todos” para igualar al candidato del partido “Progreso posible”?
a) 14
b) 9 100
c) 27 300
Answer:
Can you translate?
Step-by-step explanation:
To english..?
Helpppppppppppppppppppppppppppppppppppp
try this one method. I hope it will help a little
Please help me I'm so bad at math and doing AFDA really doesn't help..
place for the solution with quadratic equation
Answer:
4, 16, -4, 2, -1
x = 4±√(16-4(2)(-1)/4
Correct expression:
Step-by-step explanation:
Given the expression
2x² - 8x - 7 = -4x - 6
Rewrite in standard form
2x² - 8x + 4x - 7 + 6 = 0
2x² - 4x - 1 = 0
Get the coefficients
Given the standard form ax^2 + bx + c = 0
ax^2 = 2x^2
a = 2
bx = -4x
b = -4
c = -1
Use the general formula to find the factors
x = -b±√b²-4ac/2a
Substitute the coefficients
x = -(-4)±√(-4)²-4(2)(-1)/2(2)
x = 4±√(16-4(2)(-1)/4
Hence the values are 4, 16, -4, 2, -1