Pls I need help this assignment is done before 11:59pm.
Solving systems of equations using substitution.
Can you also explain cause I didn’t understood that much.
Thanks.
Answers
Answers:
Blank 1 = 3Blank 2 = 3In other words, x = 3 and y = 3
===========================================================
Explanation:
Let's solve the first equation for x. I'm picking on this equation variable because the coefficient is 1.
Solving for x leads to
x-2y = -3
x = -3+2y
I added 2y to both sides
Now we'll plug this into the other equation. This means we replace every copy of x with -3+2y since they are the same thing.
3x + 5y = 24
3( x ) + 5y = 24
3( -3+2y ) + 5y = 24 .... replace x with -3+2y
3(-3) + 3(2y) + 5y = 24 .... distribute
-9 + 6y + 5y = 24
11y-9 = 24
11y-9+9 = 24+9 ...... adding 9 to both sides
11y = 33
11y/11 = 33/11 .... dividing both sides by 11
y = 3
We'll use this y value to find x. We can pick on any equation with x & y in it, but I find it's easiest to use the equation where x is isolated
x = -3+2y
x = -3+2(3) .... replace y with 3
x = -3+6
x = 3
So both x and y are equal to 3
-------------------------------
Let's check the answer
Plug (x,y) = (3,3) into the first equation. We should get the same number on both sides after simplifying fully
x-2y = -3
3 - 2(3) = -3
3 - 6 = -3
-3 = -3
So far, so good. Let's try the other equation
3x + 5y = 24
3(3) + 5(3) = 24
9 + 15 = 24
24 = 24
The other equation is true as well. This fully confirms that (x,y) = (3,3) is the solution to this system of equations. If you graphed each original equation, you should find they cross at the location (3,3).
Side note: it won't always be the case that x and y are the same value.
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Step-by-step explanation:
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Answers
4y = 24 + 12x
y = 6 + 3y
PLEASE HELP! I WILL MARK BRAINLIEST IF CORRECT!
The chart below displays information regarding the number of picture frames sold by a store in a given month.
According to the chart, what fraction of the frames sold during the four-month period were sold in march? Hint: Determine the total number of frames sold and then write a fraction with March/total and simplify.
a. 3/10
b. 1/4
c. 1/5
d. 1/6
e. 1/10
Answers
Answer:
1/4
Step-by-step explanation:
Calculate the frames of each month:
January = 350
February = 100
March = 250
April = 300
Solve
[tex]\frac{March}{Total} = \frac{250}{350 + 100 + 250 + 300} = \frac{250}{1000}[/tex]
Simplify
[tex]\frac{250}{1000} = \frac{25}{100}= \frac{1}{4}[/tex]
I’m very confused please help!
Answers
Answer:
x=2, y=-2
Step-by-step explanation:
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Jada's sister earns a commission. she makes 3.5% of the amount she sells. Last week she sold 9,000$ worth of furniture. How much was her commission?
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Please Help Me With This Problem (Math)
Zack delivers mail for the post office. Every day he walks a 7-mile route. How many miles does Zack walk in one month if he works 22 days that month?
Answers
Answer:
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Step-by-step explanation:
Answer:
154 miles.
Step-by-step explanation:
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Answer:
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What are the coordinates of point S'?
(2, 1)
(1, -2)
(-1, -2)
(2, -1)
Answers
Answer:
(2,-1)...........
Step-by-step explanation:
................
42+24n
The factored form is
Answers
GCF = 6
Factor out the GCF. (Write the GCF first. Then, in parentheses, divide each term by the GCF):
6(42/6 + 24n/6)
Simplify each term in parentheses:
6(7 + 4n)
DONE !!
The expression 42+24n in factor form is 6(7+4n).
What is Expression?An expression is combination of variables, numbers and operators.
The given expression is 42+24n
Forty two plus twenty four n.
We need to factor out the expression.
TO do this we have to find the greatest common factor of 42 and 24
The factor of 42 are 1, 2, 3, 6, 7, 14, 21 and 42
The factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24.
The common factors are 1,2,3, and 6.
The greatest common factor is 6.
S0 the expression in factor form is 6(7+4n)
Hence, the expression 42+24n in factor form is 6(7+4n).
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Y=91 if x is 4 what is y
Answers
Answer:
y=91
.........???????
what is the diameter of a pond with a area of 4069.44
Answers
Answer:
72
Step-by-step explanation:
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4069.44^2 = 3.14r^2
(divide both sides by 3.14)
1296=r^2
(find sqr root of 1296)
36=r
to find the diameter with the radius, multiply radius by 2... 36*2= 72
The diameter of a pond with an area of 4069.44^2 is 72!
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Sergio tiene p pinturas en su colección de arte.
Él y otros coleccionistas de pintura locales
acordaron donar 48 pinturas al museo local.
Cada uno de los 12 coleccionistas donarán la
misma cantidad de pinturas.
¿Cuántas pinturas tendrá Sergio en su colección
de arte después de su donación?
Escribe tu respuesta como una expresión.
pinturas.
¿Atorado? Ve un video o usa una pista.
Answers
Answer: P-4
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help.......................
Answers
Answer:
x=7
Step-by-step explanation:
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Answer:
6 ride passes
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Step-by-step explanation:
11.
[tex]T=5.50R+10*7.25[/tex]
[tex]for T=105.50[/tex]
[tex]R=6[/tex]
While
T is total cost.
R number of ride passes.
12.
[tex]T=1.25n+4.75[/tex]
[tex]for T=9.75[/tex]
[tex]n=4[/tex]
While
T is total paid.
n is number of addition items.
Answer the following question in 3 complete sentences!
Would you rather have $1,000,000 or start with a penny and double your money every day for 30 days? Why?
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Answer:I would have the 1000,000 because i dont want to start with a penny because it takes longer
Step-by-step explanation:
Multiply (2x + y = 20) by 5 and you get
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Answer:
10x +5y = 100
Step-by-step explanation:
Ig not sure
3
8 If xty 10 and - y = 6. What is the value of x
-y² ?
(.520 d-520
a 604
b. 504
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Answer:
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Answer:
10x-20 uhhh yeah that's the answer
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PLEASE HELP!!!!!!!!Drag the number cards to create a correct sentence
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Reasoning: there are multiple possible answers, and here is an acceptable one.
The sequence that fulfills all the conditions is 4% of 250 = 10.
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From the table and a bit of thinking, we can construct a sequence that has whole value and percentage value as integers.
After trying with different sequences and by hit and trial we found a sequence that is,
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A university has 40,140 students. In a random sample of 210 students, 14 speak three or more languages. Predict the number of students at the university who speak three or more languages.
Answers
Answer:
2676 students
Step-by-step explanation:
Total number of students =. 40,140
During study:
Sample size = 210
Number of samples who speak 3 or more languages = 14
Proportion who speak 3 or more languages :
14 / 210 = 0.0666666
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0.0666666 * total number of students
0.0666666 * 40140
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2.
Find the slope of the line.
A. 0
B. -2
C. Undefined
D. 2
Answers
Answer:
A. 0
Step-by-step explanation:
2-2/4-(-5)=0/9
Answer:
Answer: Undefined
Step-by-step explanation:
Its undefined because the line is vertical. This is also why the answer isnt zero.
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Answers
Answer:
width be x
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Step-by-step explanation:
A diameter is a chord.
True or false and why?
Answers
Answer:
true.
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Step-by-step explanation:
A diameter satisfies the definition of a chord, however, a chord is not necessarily a diameter. This is because every diameter passes through the center of a circle, but some chords do not pass through the center. Thus, it can be stated, every diameter is a chord, but not every chord is a diameter.
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Answers
Answer:
2b + 2c
Step-by-step explanation:
Use distributive property: 2b + 2c
______________________________
1.) Use distributive property to multiply:[tex]2[/tex] × [tex]b=2b[/tex][tex]2[/tex] × [tex]c=2c[/tex]
So your answer is [tex]\bold{2b+2c}[/tex].
______________________________
use the image below to answer questions 8-9
rhombus JKLM
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9. find the measure of angle 2
Answers
Answer:
Angle 1=42.5
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Answers
Answer:
9, 33/14
Step-by-step explanation:
1 whole and 5/6 x 1 whole and 2/7 =
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Answer:
yes sure
Step-by-step explanation:
3/7 nd 4/5
not sure
Systems of equations by substitution
Answers
-x -5 = -x - 5
x = -2
Answer:
(-2,1)
Step-by-step explanation:
Substitute the value of y (x+3) from one equation into the second equation (2x+5)
X+3 = 2x + 5
add -2x to both sides
-x+3=5
add -3 to both sides
-x=2
x=-2
substitute -2 for x in either equation to find y.
y=-2+3
y=1
Check your answer by substituting x and y into either equat to make sure it equals.
y=x+3
1=-2+3
1=1
or
y=2x+5
1=2(-2)+5
1=-4+5
1=1
GIVING BRAINLIEST please answer: Carly and Carter are comparing bedrooms. They are each getting new carpet and are trying to figure out which room will be the most expensive to cover with carpet. (The rooms are both rectangular) Carly's bedroom is 12.3 ft. long and 6.9 ft. wide. Carter's bedroom is 10.4 ft. long and 8.2 ft. wide. Which bedroom will be the most expensive to cover with carpet? Explain your process for figuring out the area of the floor for each bedroom and determining your answer.
Answers
Answer:
Carter's bedroom
Step-by-step explanation:
Carley's bedroom :12.3 x 6.9 = 84.87 sq feet
Carter's bedroom : 10.4 x 8.2 = 85.28 sq feet
Answer:
Step-by-step explanation:
Carley's bedroom :12.3 x 6.9 = 84.87 sq feet
Carter's bedroom : 10.4 x 8.2 = 85.28 sq feet