Substitution algebra
Please answer fast :) Don't answer this with troll stuff plz, I don't have much points
Answers
We will use substitution to solve the system. Step 1 is partially complete.
[tex]y = -2x - 9\\6x - 5y = -19\\\\6x - 5(-2x - 9) = -19\\\\6x + 10x + 45 = -19\\\\16x + 45 = -19\\\\16x = -64\\\\x = -4[/tex]
We will now use what we got for x to solve for y in one of the original equations.
[tex]6(-4) - 5y = -19\\\\-24 - 5y = -19\\\\-5y = 5\\\\y = -1[/tex]
The solution is (-4, -1).
Related Questions
What is the value of s ?
Answers
Answer:
The value is 17
Step-by-step explanation:
This is because to find the hypotenuse you use the equation [tex]a^{2} + b^{2} =c^{2}[/tex].
So you would square 15 and 8 then add them up to get [tex]c^{2}[/tex]. After this you just need to find the square root of [tex]c^{2}[/tex] to get "c" by itself or in this case "s".
Clare is 5 years older than her cousin. cousin How old would Clare be if her cousin is: A. 10 years old? B. 2 years old? C. X years old? Clare is 12 years old. How old is Clare's cousin?
Answers
Answer:
if her cousin is 10 clare will be 15, cousin=2 clare=7, cousin=x clare= x+5. if clare= 12 then 12-5=7
The age of cousin when Clare is 12 years old is computed as 7 years.
What is meant by mathematical operations ?Mathematical operations are defined as the operations used for calculating or computing various solutions of two or more values.
Here,
Given that, Clare is 5 years older than her cousin.
Age of Clare at different ages of her cousin is calculated.
A) 10 years old
Age of Clare = 10 + 5 = 15 years old
B) 2 years old
Age of Clare = 2 + 5 = 7 years old
C) X years old
Age of Clare = X + 5 years old
Cousin's age when Clare is 12 years old can be calculated as,
Age of cousin = 12 - 5 = 7 years old
Hence,
The age of cousin when Clare is 12 years old is computed as 7 years.
To learn more about mathematical operations, click:
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If $1=Rs. 102.50 and £ 1=Rs, 140, how many dollars equals to £5?
Answers
Answer:
$6.83= £5
Step-by-step explanation:
As £ 1=Rs 140
So, £5 = Rs 140 x 5
£5 = Rs 700 ...(i)
Now, Rs. 102.50 = $ 1
So, Rs. 1 = $ (1/102.5)
Therefore, Rs. 700 = $ (1/102.5)x 700 = $6.83
By using equation (i)
£5 = $6.83
Hence, there are $6.83= £5
Paula is a banker who earns $15 per hour. If Paula worked 63 hours at her job, how much money did she earned? Please answer this is for my sister
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Danielle’s retirement income is $90,000. Assuming it is 70% of his final salary, what was her final salary?
$63,000
$90,000
$128,571
$140,595
Answers
Answer:
Correct ✅ answer ✅ - Danielle's retirement income is $90000. Assuming it is 70 % of his final salary, what was her final salary $63000 $90000 $128571 $14.
For the month of march, Kasey plans to vacuum her floor every fourth day and clean her bathroom every seventh day if she begins this march 1, on what day of the month will she do both jobs?
Answers
Answer: March 28
Step-by-step explanation:
Solve for this by checking for the lowest common multiple of 7 and 4.
Multiples of 7: 7, 14, 21, 28, 35
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32
Lowest is 28 so on March 28th she both will vacuum her floor and clean her bathroom.
If one diagonal is 12 inches long and the other is 32 inches long, how many inches long, to the nearest hundredth of an inch, is a side of the rhombus
Answers
Answer:
17.09 inch
Step-by-step explanation:
Given that:
A rhombus with diagonals of length 12 inches and 32 inches.
To find:
The length of rhombus to the nearest hundredth of an inch.
Solution:
First of all, we need to learn about the property of a rhombus, its sides and its diagonals.
The diagonals of a rhombus intersect each other by bisecting each other and are perpendicular to each other.
And all the sides
Kindly refer to the attached image for the given dimensions.
Now, there are four right angled triangles in which we can use Pythagorean theorem to find hypotenuse which is nothing but the side of rhombus.
According to Pythagorean theorem:
[tex]\text{Hypotenuse}^{2} = \text{Base}^{2} + \text{Perpendicular}^{2}\\\Rightarrow Side^{2} = 6^{2} + 16^{2}\\\Rightarrow Side^{2} = 292\\\Rightarrow Side \approx \bold{17.09\ inch}[/tex]
help ya girl is failing math
Answers
Answer:
choose the third choice
Does anyone know what the range of function is for this graph ?
Answers
Answer:
That's a nonlinear line
Step-by-step explanation:
Brainiest plz
Answer:
Step-by-step explanation:
at the book fair 26 books were sold in the first 2.5 hours at this rate how many books will be sold in the 10 hours of the book fair
A. 78
B. 26
C. 104
D. 52
Answers
Answer:
Step-by-step explanation:
if 26 books were sold in 2.5 hours
26 books.......................................2.5 hours
? books............................................10 hours
the books sold in 10 h
=(26*10)/2.5=104
Hey,
Answer ;
C
2,5→26
10→x
2,5.x=26.10
2,5x=260
25x=2600
x=104
Good luck^-^
ratio 7:5 end them
Page :
Date:
6) I
If a
pair
F
the
supplementary
are
Answers
Answer:
7:6
Step-by-step explanation:
yan ng sagot dont forget to heart
NEED HELP ASAP!!!!!!!!
Answers
Answer:
with what
Step-by-step explanation:
Answer:
WHAT?!?!?!?!!?!
Step-by-step explanation:
Fill in the blank with the correct response.
What is the scale factor?
Answers
Answer:
3/5
Step-by-step explanation:
Answer:
3/5
Step-by-step explanation:
i have had this question too lol
Find the measure of angle a
Answers
The ratio of boys to girls in the freshman class is 2 : 3. If there are 120 boys in the class, how many are girls? *
40
120
80
180
Answers
What is compound interest?
What is simple interest?
Answers
Answer: Is below
Step-by-step explanation:
Compound interest is the addition of interest to the principal sum of a loan or deposit, or in other words, interest on interest. It is the result of reinvesting interest, rather than paying it out, so that interest in the next period is then earned on the principal sum plus previously accumulated interest.
Simple interest is a quick and easy method of calculating the interest charge on a loan. Simple interest is determined by multiplying the daily interest rate by the principal by the number of days that elapse between payments.
Answer:
See below.
Step-by-step explanation:
[tex]\boxed{\underline{\text{Compound Interest}}}[/tex]
Compound interest is earned on an investment when the interest earned for each period is added to the previous principal.
Compound interest formula:
[tex]\Longrightarrow: \sf{A=P(1+\dfrac{r}{n})^n^t}}[/tex]
A: represents the current balance or compound amount in the account.P: represents the principal (the original amount deposited).R: annual interest rate (in decimal form).N: the number of times per year that interest is compounded.T: time in years the money has been invested.[tex]\boxed{\underline{\text{Simple interest}}}[/tex]
A simple interest investment is one that earns interest only during the first period but does not earn interest thereafter.
Simple interest formula:
[tex]\Longrightarrow: \sf{I=PRT}[/tex]
I= InterestP= PrincipalR= RateT= TimeI hope this helps, let me know if you have any questions.
Learn more about how to solve with compound interest and simple interest at:
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What is the slope of the equation y-5=-3x?
5
3
-3
-8
Answers
SOMEONE PLZ HELP
Luke was out of cereal for breakfast. He walked to the grocery store to buy his favorite, Honey Nut Cheerios. While looking at the cereal, he noticed all the different box sizes and different prices. A giant "Family Size" box contained 14.7 oz and cost $5.99. A small, individual size contained 1.5 oz and cost $1.89. He wanted to get the most "bang for his buck." Which choice is the better buy? In other words, which choice is cheaper per ounce? Which one should he buy and why?
Answers
Answer:
das tough luke 2r892093427-4t70534688-3579049730957
Step-by-step explanation:
853047017=+3r408703471q8udiow
4(1-x) +2 x = - 3( x + 1 )
Answers
X=-7
Explanation
Tell me and I will give u it
Answer:
X = 7
Step-by-step explanation:
Clare is running around the track and her coach recorded her times at the end of laps 2, 4, 6, 8 and 10. Is Clare running at a constant pace and if so, what is the constant of proportionality (unit rate) Clare is running?
A.
Yes, Clare is running at 5 minutes per lap.
B.
No, Clare is not running at a constant rate because she gets slower as she runs more laps.
C.
Yes, Clare is running at a constant rate of 2.5 minutes per lap.
D.
No, Clare decided not to listen to her coach and decided to run faster each lap.
Answers
Answer:
d
Step-by-step explanation:
CONSIDER THIS SITUATION
A baker has 12 lbs of almonds. She puts them in bags, so that each
bag has the same weight. In terms of pounds and bags of almonds,
what would 12 = 6 mean?
Answers
Answer:
maybe you are splitting the 12 pounds of almonds into 2 so you have two bags of 6 pounds of almonds.
Step-by-step explanation:
This isn't for sure. Just a theory.
Answer: 12 lbs. of almonds is separated into 6 bag all of them weighing 2 lb. each
-7.5x + 0.25 = -5.75
The value of x is =
Answers
Answer:
x = 4/5
I hope this helps!
Answer:
x = .8
Step-by-step explanation:
-7.5x = -5.75 - 0.25
-7.5x = -6.0
-6.0/-7.5 = .8
Eric's father Works two part-time jobs one in the morning and one in the afternoon and works a total of 40 hours each five day workweek if your schedule is the same each day and he works 3 hours each morning how many hours does Eric's father work each afternoon
Answers
Answer:
8
Step-by-step explanation:
because 40 devided by 5 equals 8 so thats how many hours in the afternoon
40 - 15 = 25
He works 25 hours in the afternoon every week.
25 / 5 = 5
So his father works 5 hours every after noon 5 days out of the week
Which functions are increasing?
Select all correct answers
Answers
Answer:
The correct answers should be b and c
Step-by-step explanation:
|•-•|
can someone please tell me what to do in this question im so confused
Answers
input: x,independent variable ,domain
output: y, dependent variable , range
extra: f(x) , discrete, and slope
I need help with this
Answers
Answer:
y = -3x + 10
Step-by-step explanation:
Linear functions are those whose graph is a straight line. A linear function has the following form. y = f(x) = a + bx.
Answer:
D, last one
bottom right
y=-3x+10
Step-by-step explanation:
help me pls it is on a time i got 30 minutes left
Answers
Answer:
C.
Step-by-step explanation:
sorry if im wrong
Answer:
i believe that the answer would be D
Step-by-step explanation:
the slope is positive eliminating the first 2 answers. it goes over and up about one so that leaves C and D
Alice spent $131 on shoes. Flip flops cost $15 and Sneakers cost $28. If she
bought a total of 7 shoes, then how many of each kind of shoe did she
buy? Write the answer as an ordered pair...(flip flops, sneakers). Do not
include the units. *
Answers
Answer:
Flip flops = 5
Sneakers = 2
Step-by-step explanation:
Let
x = flip flops
y = sneakers
x + y = 7 (1)
15x + 28y = 131 (2)
From (1)
x = 7 -y
Substitute x = 7 - y into (2)
15x + 28y = 131
15(7 - y) + 28y = 131
105 - 15y + 28y = 131
-15y + 28y = 131 - 105
13y = 26
y = 26/13
= 2
y = 2
Substitute y = 2 into (1)
x + y = 7
x + 2 = 7
x = 7 - 2
= 5
x = 5
Flip flops = 5
Sneakers = 2
Help what does this mean?
Answers
f(-4) = (-4)^2 + 3(-4) + 7
f(-4) = 16 - 12 + 7
Solution: f(-4) = 11
Answer:
multiply every thing by 4 for where x is. so it is F(4)= $x4 + 12+7
Step-by-step explanation:
The graph of a function is shown:
Which of the following correctly identifies the set of outputs?
O {(-3,2), (-2, 1), (3, 3), (3, -1)}
O {(2, -3), (1, -2), (3, 3), (-1,3)}
O {-3, -2,3}
O {-1, 2, 3}
Answers
Answer:
C, (-3, -2, 3)
Step-by-step explanation:
I literally just had this question and i got a 100. You just find what the points are, and choose the y-axis point because it's the output, like the x-axis point is the input. So for starters, we can look at the point in the upper right square corner on the grid. You would go to the left 3 times, along the x-axis, and it would be -3. Then you would go up 2 times, along the y-axis, and it would be positive 2. So the plot for that point is (-3, 2) but we want the output which is the y-axis so it would be 2. Do the same with all of the points. [you can already rule out the first 2 choices because that's giving all of the points, not just the outputs] That leaves you with the bottom 2 and only one of the choices has the positive 2 which we already found. Hence, the answer is C. Trust me, it's not hard, i didn't have to read anything, i just figured it out. And if i can, you can. You got this!