Answers
Answer:
(x, y) = (-3, -6)
Step-by-step explanation:
You want the solution to the system of equations 6 = -4x +y, -5x -y = -21 using the substitution method.
Expression for yAdding 4x to the first equation gives an expression for y:
6 +4x = y
SubstitutionThis can be substituted into the second equation:
-5x -(6 +4x) = 21
-9x -6 = 21 . . . . . simplify
-9x = 27 . . . . . . . add 6
x = -3 . . . . . . . . . divide by -9
6 +4(-3) = y . . . . . . . find y using the expression for y
6 -12 = -6 = y
The solution is (x, y) = (-3, -6).
Related Questions
HELP ME THIS IS URGENT!!!!!!!!!!!!!!
Are 9/12 and 21/24 equivalent ratios? Explain.
Answers
1st divide
9/12= 0.75
21/24=0.875
therefore 21/24 is a greater fraction
If a loan is taken out for $40.54 at 0.9% and costs $1.09, how long was the loan for?
Answers
Answer:
2 YEAR AND 9 MONTHS
Step-by-step explanation:
solution,
given,
principle [p]=40.54
rate [r]=0.9
interest=1.09
time[t]=?
now,
t=I*100/P*R
109/40.54*0.9
109/36.48
=2.9
Question is in picture, thank you
Answers
1=0
2=206
3=348
4= -16
5=56
6=14
7=12
8=5
Answer:
1=0
2=206
3=348
4= -16
5=56
6=14
7=12
8=5
and Tyler wrote -8-3=?
Answers
Answer:
theres no problem
Step-by-step explanation:
in 2022 joey chestnut won nathans hot dog eating contest by eating 63 hotdogs in 10 minutes how many hotdogs did he eat per minuete? type your anwser as a mixed anwser
Answers
Answer: 6 and 3/10 because 60 divided by 10 is 6 and 3 will be 3/10 since it says he ate it in 10 minutes.
How much interest is earned on $2,078.24 at 0.6% for eight years?
Answers
Hey, 50 points!
Harrison and Alex are putting a fence around a field that has a perimeter of 384ft. The length is 6ft greater than 2 times the width. Find the width of the field.
Answers
a perimeter is made up of a length and width, obviously, so you can write that out algebraically as 2L+2W=P. Now, since the length is 6ft greater than 2 times the width, it can be written as 2W+6. If we plug our new L value in now, we would make the equation 2(2W+6)+2W=P. From here on out, you just gotta plug and chug.
2(2W+6)+2W=P
2(2W+6)+2W=384
4W+12+2W=384
6W+12=384
6W=372
W=62
A farmer owns a total of 10 5/6 acres of land. The land is separated into 5 equally sized sections. How many acres are in each section? Write your answer as a mixed number in simplest form.
Answers
Answer: 2 1/6
Step-by-step explanation: First, convert 10 5/6 into a mixed number: 65/6, then divide by 5/1.
65/5=13
6/1=6
You then have 13/6.
Convert it to a mixed number: 2 1/6
Answer:
Step-by-step explanation:
1=2 so 12
Hey! I have a assignment due soon about transversals of parallel line: solve for x. If someone can help it would be great. Thank you!
Answers
Answer:
x = 20
Step-by-step explanation:
I will give brainliest to whoever answers first and gives me the answer for every question and it must be understandable.
Answers
Answer:B
Step-by-step explanation:You have to multiply the fractions.
Angle B and angle C are supplementary. If the measure of angle B is 14 times the measure of angle C, what is the difference between the angles' measures?
Enter your answer as the correct number of degrees, like this: 42
explain why
Answers
Answer:
156
Step-by-step explanation:
Let measure of angle C = x.
Then, the measure of angle B is 14x.
14x + x = 180
15x = 180
x = 12
14x = 14(12) = 168
168 - 12 = 156
Can you please help me????
Answers
Answer:
19.2
Step-by-step explanation:
[24 + 1.5(16)] / 2.5 = 19.2
Or
[24 - 1.5(16)] / 2.5 = 0
Answer:19.2
Step-by-step explanation:
For each description, write each percent increase or decrease as a percentage of the initial amount.
Then write an equation for the situation. The first one is done for you.
a) There were 22% fewer sunny days this year than last year.
1) What is the percent of the initial amount?
2) What is the equation?
(You have 2 days to do this please :) )
Answers
Hello! I need help on this assignment since it’s due soon! It is about transversals of parallel line: solve for x. Thank you!
Answers
Answer:
x=24
Step-by-step explanation:
George runs cross country. He runs 3 miles in 24 minutes. If he keeps the same pace how long will it take him to run 7 miles?
Answers
8 min x 7 miles = 56 minutes
-3.3-(-6) as an equivalent addition expression
Answers
Answer: 19.8
Step-by-step explanation: distribute -3.3 into -6 by multiplying them together
Hope this helped
You invested $45.12 and received $45.75 after two years. What was the interest rate?
Answers
Step-by-step explanation:
check for the Financial present formula
Answer:
Step-by-step explanation:
5% x $1,000 x 4 = $200 so its 200
Which pair of fractions are equivalent to 2/9?
25 points
Answers
Answer:
4/18
6/27
8/36
10/45
12/54
14/63
16/72
18/90
After buying dinner, Julia had 34$ left over. She spent 3$ on cranberry sauce, 12$ on stuffing, and 31$ on the turkey. How much money, m, did Julia start with?
Answers
So she started with 80$
so she started with $80
The little dots are the answers, which two do I choose?
Answers
Answer: (8,5) and (16,10)
Step-by-step explanation:
The number of questions per minute is 0.625. To find the points, multiply 0.625 by the x-values of each point, and if it corresponds with any of the y-values you see, that'll be the points you choose.
Answer:
Step-by-step explanation:
(8,5) (16,10)
A fly can walk around a cubical block in two minutes. How long will it take the fly to walk along the edges of the cube from one corner to the opposite corner if it walks at the same rate?
Answers
Answer: 90 seconds or 1.5 minutes
Step-by-step explanation: 2 minutes(120 seconds) divided by 4 edges equals 30 seconds per edge. To get from 1 corner to the diagonally opposed opposite corner the fly would walk on 3 edges, so it would take 90 seconds
The time taken to cross from one corner to another diagonally is 90 seconds or 1.5 minutes.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that a fly can walk around a cubical block in two minutes.
The time taken to cover all the one edge is,
T = 120 / 4
T = 30 seconds
To get from 1 corner to the diagonally opposed opposite corner the fly would walk on 3 edges, so it would take 90 seconds. Mathematically written as,
To = 3 x 30
To = 90 seconds
To = 1.5 minutes
Therefore, the time taken to cross from one corner to another diagonally is 90 seconds or 1.5 minutes.
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Shawn invites some friends over for pizza and a movie. He makes a small cheese pizza for himself and a large pepperoni pizza for his friends. Shawn uses 0.75 pounds of dough for the cheese pizza and twice as much dough for the pepperoni pizza. How much dough does Shawn use in all?
Answers
Answer:
The amount of dough used for the pepperoni will be twice that of the cheese or 2 times the amount of dough.
Step-by-step explanation:
7 1/2-6 3/10
A. 13 4/5
B. 1 1/4
C. 1 1/5
D. 1 1/10
Answers
Answer:
C. 1 1/5
Step-by-step explanation:
You first convert 7 1/2 to 7 5/10 in order to get a common denominator. You can then subtract 6 3/10 from this to get 1 2/10 or 1 1/5.
The answer is C.
Explanation:
Data set 1: Has a mean of 84 and a MAD of 6. Data set 2 Has a mean of 78 and a MAD of 8 I need to find out what the means to Mean Absolute Deviation (MAD) ratio is.
My teacher keeps telling me that it is 0.75, but I can't seem to get the right formula to it to answer right. can anyone help?
Answers
Answer:
0.75 or 6/8
Step-by-step explanation:
This is probably a late answer but I thought I would go ahead and respond.
When you have two data sets with the same variance, the ratio of the means to MAD is a way to test for the pooled variance of the two data sets
Given Data Set 1 with mean M1 and mean absolute deviation with MAD1 and another data set 2 with mean M2 and MAD2 the means to MAD ratio is given by the ratio of the absolute difference in means to the largest of the MADs
Here M1 = 84 and M2 = 78 so the absolute difference is |84-78| = 6
The larger MAD is MAD2 = 8
So the ratio is 6/8 = 3/4 = 0.75
7. Complete the table (10 points)
Word/Phrase
Symbol
Word/Phrase
Symbol
Word/Phrase
Symbol
"is"
"times"
"quotient"
“more than”
"difference"
"sum"
“less than”
"product"
"product"
“increased by”
"decreased by"
"combined"
“minus”
"out of"
"yields"
“gives”
"of"
"percent"
(by 100)
Answers
Refer to the attachment for the answer.
What is the percentage?
It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.
What is the quotient?
When two numbers are divided by each other, the result is a quotient. For instance, when we divide 6 by 3, the result is 2, which is the quotient. An integer or a decimal number can be the quotient. We have an integer as the quotient for precise divisions, like 10 5 = 2, and a decimal for erroneous divisions, like 12 5 = 2.4.
As shown in the table, the words- is, gives, and yields will have the equal sign
Another name for subtraction is a difference. Times, product, and multiplication will have the same symbols.
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Paddling with the current, a group of kayakers traveled 9 miles in 2 hours. Paddling back, they traveled 4 miles in the same amount of time. What was the speed of the current and the speed of the kayakers in still water?
Please do not answer 3.25 and 1.25 they are incorrect.
Answers
Answer: the speed of the current is 5 miles an hour
Step-by-step explanation:
9-4=5
A gas company charges a $16 monthly service fee and $0.6924 per hundred cubic feet of natural gas used during a month. Which equation best represents Y, the gas company’s monthly charged in dollars for using X hundred cubic feet natural gas?
A. Y = 0.6924x - 16
B. Y = 16x + 0.6924
C. Y = 16x - 0.6924
D. Y = 0.6924 + 16
Answers
The correct equation that represents Y, the gas company’s monthly charge in dollars for using X hundred cubic feet of natural gas is:
Y = 0.6924X + 16
What is an equation?An equation contains one or more terms with variables connected by an equal sign.
Example:
2x + 4y = 9 is an equation.
2x = 8 is an equation.
We have,
The correct equation that represents Y, the gas company’s monthly charge in dollars for using X hundred cubic feet of natural gas is:
Y = 0.6924X + 16
Now,
Option A has the correct variable coefficients, but the constant term is negative, which is not correct as a monthly service fee is always positive.
Option B has the correct constant term but the variable coefficient is positive, which doesn't make sense as the company charges per hundred cubic feet of natural gas used.
Option C has a similar problem as option A.
Option D has incorrect variable and constant terms.
Therefore,
The correct equation is Y = 0.6924X + 16.
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Suppose you plan to spend no more than $24 on meat for a cookout. Hamburger costs $3.00/Ib and chicken wings cost $2.40/Ib. Write and graph an equation to find three possible combinations of hamburger and chicken wings you can buy.
Answers
Explanation: we have 3/lb in hamburgers and 2.4.lb in chicken wings the total would come out to 24. Plugging it into I believe ax+by=c it looks like.
Options:
A) 8 hamburgers
B)10 chicken wings
C)5 chicken wings and 4 burgers
Look on photo please!!!
Answers
Answer:
b
Step-by-step explanation:
i am really sure just count all zeros and 5
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Answer:
b
Step-by-step explanation:
just b
Stacie makes 20% profit on all of the money she collects on her paper route. If Stacie
has 58 customers and each pays $1.25 per week how much is her profit in 4 weeks?
Answers
5 x 58= 290
290 x 0.20= 58
she will make atleast $58 in profit