Answers
Answer:
x = 2.2, y = 5.3
Step-by-step explanation:
This question is asking us to solve a system (find x and y). Because they give us that y = 1.5x + 2, then we can use this to substitute into the second equation.
9x + 4y = 41
9x + 4(1.5x + 2) = 41
Simplify.
9x + 6x + 8 = 41
15x + 8 = 41
Subtract 8 from both sides.
15x = 33
Divide both sides by 15.
x = 11/5 = 2.2
To find y, substitute x = 2.2
y = 1.5x + 2
y = 1.5 * 2.2 + 2
y = 3.3 + 2
y = 5.3
Now, we can double check to see if these two answers are right. Plug these numbers into the other equation (because to find y, we already used the first equation, so there is no need to check it, as it would just give us 5.3 = 5.3)
9x + 4y = 41
9 * 2.2 + 4 * 5.3 = 41
19.8 + 21.2 = 41
41 = 41
Thus, the answer is correct.
I hope this helps! Feel free to ask any questions!
Related Questions
Please help with these math questions I really need it ! Don't just do it for points pls
Answers
Answer:
wouldn't that be 81 but i dont know
Answer:
1. d 2. 43.5 3. 817.5
Step-by-step explanation:
The mode score on the 6th grade math quiz was 94! Which of these interpretations must be correct?
A: 99 was the highest score on the test.
B: More students received a 94 than any other score
C: A score of 91 was slightly below average.
D: No student scored below a 50.
Answers
Answer: B
Step-by-step explanation: because there were more students with score of 94 than any number.
The interpretations that must be correct is option B.
Given that,
The mode score on the 6th grade math quiz was 94.Based on the above information, the information is as follows:
More and more students should received 94 as compared to other source.It can't be say that 99 was the highest score on the test.And all other statement should not be considered.Learn more: brainly.com/question/16911495
How many solutions are there to this nonlinear system?
Answers
Answer:
none
Step-by-step explanation:
the lines never meet
Subtract 5 x 2 − 2 x − 5 5x 2 −2x−5 from − 2 x 2 − 5 x − 7 −2x 2 −5x−7.
Answers
Answer:
[tex]Result = -7x^2 - 3x- 2[/tex]
Step-by-step explanation:
Given
[tex]5x^2-2x -5[/tex] subtracted from [tex]-2x^2 - 5x - 7[/tex]
Required
Solve
The result is as follows:
[tex]Result = (-2x^2 - 5x - 7) - (5x^2-2x -5)[/tex]
Open bracket
[tex]Result = -2x^2 - 5x - 7 - 5x^2+2x +5[/tex]
Collect Like Terms
[tex]Result = - 5x^2-2x^2 - 5x +2x - 7+5[/tex]
[tex]Result = -7x^2 - 3x- 2[/tex]
Solve the right triangle below. Round all your answers to the nearest tenth. Measure of angle Z = ______
Answers
Answer:
[tex]Measure \: of \: angle \: z = \boxed{ \tt{ 19.5\degree}}[/tex]
Using ax^2 + bx + c = 0 factor 25x^2 = 49 into two linear factors
Answers
[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{25x^2=49}[/tex]
[tex]\textsf{DIVIDE by 25 to BOTH SIDES}[/tex]
[tex]\mathsf{\dfrac{25x^2}{25}=\dfrac{49}{25}}[/tex]
[tex]\textsf{Cancel out: }\mathsf{\dfrac{25}{25}}\textsf{ because it gives you 1}[/tex]
[tex]\textsf{Keep: }\mathsf{\dfrac{49}{25}}\textsf{ because it helps us solve for x}[/tex]
[tex]\textsf{New equation: }\mathsf{x^2 = \dfrac{49}{25}}[/tex]
[tex]\textsf{TAKE the SQUARE ROOT}[/tex]
[tex]\mathsf{x\pm \sqrt{\dfrac{49}{25}}}[/tex]
[tex]\mathsf{\sqrt{\dfrac{49}{25}}= 1.4}[/tex]
[tex]\mathsf{- \sqrt{\dfrac{49}{25}}= -1.4}[/tex]
[tex]\boxed{\boxed{\large\text{Answer: \huge \bf x = 1.4 or x = -1.4}}}\huge\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
Kenneth's Tea Shop has caffeinated tea and decaffeinated tea. The tea shop served 63 caffeinated
teas and 7 decaffeinated teas. What percentage of the teas served were caffeinated?
Answers
Answer:
90%
90% of the teas were caffeinated.
Step-by-step explanation:
Total teas: 63+7= 70
63/70 x 100/1= 90%
90% of the teas were caffeinated.
Answer:
90%
Step-by-step explanation:
Thando bought 24 marbles and lost 4/6 of his marbles how many did he lose?
Answers
Answer:
he lost 16, he has 8 left
Step-by-step explanation:
24 divided by 6 =4
4 x 4 = 16
24 - 16 = 8
What is the result of adding these two equations?
5x - y = 6
- 2x + y = 8
Answers
Answer:
x=14/3
Step-by-step explanation:
5x-y=6
+ -2x+y=8
----------------
5x+(-2x)-y+y=6+8
5x-2x-y+y=6+8
3x=14
x=14/3
I apologize if something is incorrect, please me know how to fix it. Thank you!
Answer:
3x=14
Step-by-step explanation:
i did it on khan lol
Please help! which ones are Standard form and which one are Vertex form?
Answers
From left to right starting on the top row it goes standered ,standered, vertex.The bottom row goes from left to right vertex, vertex standerand.
hope this helps!
2. Joan spent half of her allowance going to the movies. She washed the family car and earned 8 dollars. What is her weekly allowance if she ended with 15 dollars?
Answers
14 dollars is her allowance
Find the area of each figure. Use 3.14 for pie.
Answers
Answer:
sorry
Step-by-step explanation:
i think hope this helps
how do you find the area of a circle?
Answers
Answer:
The formula to find the area of a circle is pi times the radius squared (A = π r²).
Step-by-step explanation:
when 3 times a number is added to it's square the total is 18
Answers
Answer:
x(the number)=3
Step-by-step explanation:
3×3+3squared = 18
Answer:
3x + x^2 = 18
x^2 + 3x - 18 = 0
(x + 6)(x - 3) = 0
x + 6 = 0
x = -6
x - 3 = 0
x = 3
3.) Use the distributive property to re write each expression. 5(2x+7)
Your answer
Answers
hope this helps .
A transformation that maps the vertex A( 3 , 4 ) to A’ ( -4 , 3 ) is :
Answers
Answer:
"A reflection over the line y = x, followed by a reflection over the y-axis"
Step-by-step explanation:
We want to find the transformation that maps the point A (3, 4) into the point A' (-4, 3).
We can see that:
first we have an interchange between the x-component and the y-component.
Then we go from (x, y) to (y, x)
And now we change the sign of the x-component.
Then we go from (y, x) to (-y, x)
This is the transformation we have, now let's find a name for it.
The first transformation is a reflection over the line y = x.
The second is a reflection over the line x = 0.
Then our transformation can be:
"A reflection over the line y = x, followed by a reflection over the y-axis"
what is half of 18 !!!
Answers
Answer:
9
Step-by-step explanation:
HELP OKEAEE HELPE PELASE
Answers
Answer:
The y-intercept is 4
Step-by-step explanation:
somebody please help quick! solve for x
Answers
Answer:
x = 8
Step-by-step explanation:
51° = 4x + 19
32° = 4x
8 = x
Answer:
x = 8
Step-by-step explanation:
well, 4 x something + 19 = 51
51-19=32
32/4=8
so your answer is 8
4 x 8 + 19 = 51
Factorise the expressions and divide them as directed.
Answers
Answer:
Here you go. Check the answer in book too.
Answer:
10m ( p - q )
Step-by-step explanation:
[tex] \frac{15lm \times 2 {cp}^{2} {q}^{2} }{3l(p + q)}[/tex]
[tex] \frac{30lm \: (p - q)(p + q)}{3l(p + q)} [/tex]
[tex] \frac{10lm(p - q)}{l} [/tex]
[tex]10m(p - q)[/tex]
Hope it is helpful....
Is 307,404 divisible by 3?
Answers
No, neither is devisible by 3
How many grams of a radioactive kind of neodymium will be left after 33 days if the half-life is 11 days and you start with
160 grams?
Answers
Answer:
20 grams will be left.
Step-by-step explanation:
Half-life is 11 days
This means that in each 11 days, you lose 50% of the amount.
33 days
33/11 = 3 half-lifes.
You start with 160 grams
After 11 days: 160/2 = 80 grams
After 22 days: 80/2 = 40 grams
After 33 days: 40/2 = 20 grams.
20 grams will be left.
Answer:10
Step-by-step explanation:
Find the greatest common factor of the following monomials 34c^5 and 26c^4 and 2c^6
Answers
Answer:
63c^5
Step-by-step explanation:
The width of a rectangle is the length minus 7 units. The area of the
rectangle is 8 units. What is the length, in units, of the rectangle?
Answers
Answer:
8 units
Step-by-step explanation:
here's your solution
=> let the length of rectangle be X
=> then width = x - 7
=> area = 8units
=>> area = length*width
=> area = x (x-7) = 8
=> x^2 - 7 = 8
=> now, x^2 - 7x - 8 = 0
=> factories the above equation by middle term split
=> x^2 - 7x - 8
=> x^2 - 8x + x - 8
=> take the common
=> x(x - 8) + 1(x - 8)
=> (x + 1) (x - 8)
neglect (x + 1) because this will in negative for X
=> x - 8 = 0
=> x = 8
=>so, x = 8
=>length = 8 units
need help geometry question central angles and arcs??
Answers
Answer:
I think the answer may be 140°
360 - 160 - 60 = 140
in a school with 400 student , 22% are sixth graders . How many students are in the sixth grade?
Answers
Answer:
88
Step-by-step explanation:
PLEASE ANSWER!!!!!!!!!
Answers
Answer:
1/15
Step-by-step explanation:
no. of students who participate in all of the three activities is 2.
So, the possibility is 2/15 = 1/15
Ans: 1/15
Pls help with these math questions. Don't just do it for points pls I really need help . 3 questions Multiple choice
Answers
Answer:
6,7,7 is your answer
6.
3x+2=2x+8
x=6
Step-by-step explanation:
7.14x+12+10x=180
24x=180-12
x=168/24=7
8.9x-3=7x+11
9x-7x=11+3
2x=14
x=14/2=7
How many times can 45 go into 7,200?
Answers
Answer:
160
Step-by-step explanation:
divided 7200 by 45 to get 160
What is the solution to the equation below? vx-5=x-11
A. X=9
B. X=15
C. X=14
D. X=6
Answers
Answer:0=−6
Step-by-step explanation: