Answer:
x = 7/13, y = 8/26
Step-by-step explanation:
3x-2y=1 ...Equation 1 -2x+3y=2 ...Equation 2 Solve this equation.
3x - 2y =>1.....Equation 1
2x + 3y => 2......Equation 2
We solve using Elimination
We multiply Equation 1 by 3 and Equation 2 by 2 to Eliminate y
9x - 6y => 3.....Equation 4
4x + 6y => 4.......Equation 5
We Add Equation 4 and 5
13x = 7
x = 7/13
We substitute 7/13 for x in Equation 1
3x - 2y =>1.....Equation 1
3(7/13) - 2y => 1
21/13 - 2y = 1
21/13 - 1 = 2y
y =>21/13 - 1/2
y => 8/13 ÷ 2
y = 8/13 × 1/2
y = 8/26
Ben is going to rotate a figure in Quadrant IV 90 counterclockwise. In which Quadrant should be image be
A rectangular garden has a length of 5a + 17 feet and a width of 4a feet. Which expression represents the area of the garden in square feet?
Answer:
(5a + 17) x 4a
Step-by-step explanation:
46% of what is 13?
A)6
B)28.3
C)598
D)25
Answer:
5.98
Step-by-step explanation:
Part A: Determine the average rate of change over the interval [B, C] .
O 6
O 24
O 96
O 384
Part B: Determine the average rate of change over the interval [D, E] .
O 6
O 24
O 96
O 384
Part C: The average rate of change is
O larger over the interval [D,E] than [B,C].
O smaller over the interval [D,E] than [B,C].
O the same over the interval [D,E] than [B,C].
Answer:
Part A: 24
Part b: 384
Part c: larger over the interval
Step-by-step explanation:
which expression has the same value as -5 - (-9)?
Answer: the answer is 4 your welcome
Step-by-step explanation:
In a fish tank there are 5 star fish for every 4 piranhas. Write 3 equivalent ratios.
Thank you
Answer:
10:8 (starfish:piranhas)
20:16 (starfish:piranhas)
15:12 (starfish:piranhas)
Step-by-step explanation:
I NEED HELP ASAP, WILL GIVE BRAINLIEST
Which shows the series 0 + 2 + 6 + 12 written in sigma notation? Which shows the series 0+2+6+ 12 written in sigma notation? a. 4 (2n - 2) n=1 b. 4 (n-1) (n − 2) n=1 C. 4 (n2 - 1) n=1 d. 4 An(n-1) n=1
Answer:
d
Step-by-step explanation:
Use POE to eliminate answers that are not correct. Plug 1,2,3,4 into n for each of the sums, and see if they give you 0+2+6+12. Only D does this.
what does this mean? Could I be lectured on this? will give 50 points and brainliest to the fastest responder
Answer:
Nonproportional
Step-by-step explanation:
A line that is proportional will always pass through the origin (0, 0). If it does pass through the origin, then x and y have a proportional relationship.
Best of Luck!
Answer:
60
Step-by-step explanation:
if you look at the graph you see that
i don't know how to do it so
I think the answer is 60.
PLEASE HELP MY SOULLLLL
please answer these (please show a little work not alot is needed just some but, feel free to put more) plz put the question number next to the answer if you put it as text if you just edit the pictures then ignore then don't mind it
Answer:
I will help ur soul
Step-by-step explanation:
Do u need the work as well?
What is the solution to the equation 1/4x - 1/8 = 7/8 + 1/2
the answer is
[tex]x = - 4[/tex]
PLEASE HELP
Let f(x) = 4x + 3 and g(x) = -2x + 5. Find.(f.g)(5)
a. 23
b. -17
c. -41
d. -5
Answer:
After solving we get (f.g)(5)=-115
But the correct option is not given in the question.
Step-by-step explanation:
We are given:
[tex]f(x) = 4x+3\\g(x)=-2x+5[/tex]
We need to find (f.g)(5)
First we will multiply f and g to find (f.g) i.e
[tex](f.g)(x)= f(x) \times g(x)\\(f.g)(x) = (4x + 3)(-2x + 5)\\(f.g)(x)=4x(-2x+5)+3(-2x+5)\\(f.g)(x)=-8x^2+20x-6x+15\\(f.g)(x)=-8x^2+14x+15\\[/tex]
Now putting x=5
[tex](f.g)(x)=-8x^2+14x+15\\Put \ x=5\\(f.g)(5)=-8(5)^2+14(5)+15\\(f.g)(5)=-8(25)+70+15\\(f.g)(5)=-200+70+15\\(f.g)(5)=-115[/tex]
So, after solving we get (f.g)(5)=-115
But the correct option is not given in the question.
Can you please find the missing angle? Thanks!
Which expression(s) have a value that is greater than 6?
Select all the correct answers.
A. 6×23
B. 6×218
C. 6÷34
D. 6−15
F. 6−120
Answer:
A B F
Step-by-step explanation:
juussssstttttt trrrruuuassttt meeee
Last month, Jess received $13,087, of which $7,594 were one-time donations. If she earns $3 for each monthly subscription, which equation represents this situation, where x represents the number of monthly subscriptions to her channel?
Answer:
13,087 = 3x + 7,594
Step-by-step explanation:
have a good day
14. A family travels to Bryce Canyon for three days. On the first day they drove 150 miles. On the second day
they drove 190 miles. If their average number of miles per day was at least 180 miles, what is the number of
miles they will have to drive on the third day?
Write an inequality to show this problem.
Answer:
I'm guessing 170 miles.
Sry if i'm wrong, I tried my best.
It'll also make me happy if you would subscribe to my channel Yaya Playz 23, and my friends BonheurPlaysGames!!! and Sagesse Games, there small YTers as well. Thank you!
What are some things to be aware of that can lead to higher than expected total when making a purchase or checking out?
Answer:
Taxes and shipping if checkout is online.
Step-by-step explanation:
Alberto is heating a solution in his chemistry lab. The temperature of the solution starts at 17°C. He turns on the burner and finds that the solution's temperature increases by 5°C every minute. This graph shows the temperature change.
Answer:
B
Step-by-step explanation:
If you look closely at the graph you will see only B could be the answer.
A doesn't work
B works
C is close
D could never work
A rectangle has a width of 9 units and a length of 40 units. What is the length of a diagonal? 31 units 39 units 41 units 49 units
Answer: 41 units
Step-by-step explanation: took the quiz
The length of the diagonal is 41 units.
To find the length of a diagonal.
What is rectangle?A Rectangle is a four sided-polygon, having all the internal angles equal to 90 degrees.
Let a right triangle with legs length 9 units and 40 units and hypotenuse is the diagonal length c.
[tex]a^{2} +b^{2} =c^{2}[/tex]
[tex]9^{2} +40^{2} =c^{2}[/tex]
[tex]81+1600=c^2\\1681=c^2[/tex]
sqrt both sides
41=c
So, the length of the diagonal is 41 units.
Learn more about rectangle here:
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8x+4(4x- 3) = 4(6x +4)-4
7x – 11x = 20
(Multi- step equations)
please help
math test <3
Answer:
The answer is x= -5
Step-by-step explanation:
hope this helps
Solutions:
7x – 11x = 20
-4x=20
To find the x divide both side by -4
-4x/-4=20/-4
x= -5
Answer:
7x-11x=20
-4x=20
x=20/-4
x= -5
In 1990 Detroit, Michigan, had an estimated population of 1,027,974. By 2000 the population had decreased 7 1/2%. What was the estimated population in 2000 for Detroit, Michigan? Find the answer to the nearest whole number.
Answer:
950876
Step-by-step explanation:
- the population had gone down 7.5%, that means 92.5% of the population remained [ 100 - 7.5 = 92.5 ]
- 92.5% of the original population is
( 92.5/100 ) * 1,027,974
- calculate and you'll get = 950875.95
- rounded up, its 950876
(ANSWER ASAP) Solve the inequality.
Answer:
a>6
Step-by-step explanation:
add 2 to both sides
Answer:
a>6
Step-by-step explanation:
First, you would add 2 to each side to cancel out the -2 after the a. Now, you have a>6.
Which expression is equivalent to 9x2+24x+16?
(3x+8)(3x+8)
(3x+4)(3x+4)
(3x+4)(3x−4)
(3x+8)(3x−8)
Answer:
B. (3x + 4)(3x + 4)
The equivalent value of the expression is A = ( 3x + 4 ) ( 3x + 4 )
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
A = 9x² + 24x + 16
On factorizing the equation , we get
A = ( 3x + 4 )²
On simplifying , we get
A = ( 3x + 4 ) ( 3x + 4 )
A = 3x ( 3x + 4 ) + 4 ( 3x + 4 )
A = 9x² + 12x + 12x + 16
On further simplification , we get
A = 9x² + 24x + 16
Hence , the value of the expression is A = 9x² + 24x + 16
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solve for y -3y+12= -48
Please show work tysmmm
Answer:
y=20
Step-by-step explanation:
-3y+12=-48
-12 -12
________________
-3y=-60
÷-3 ÷-3
___________________
y=20
I hope this helps :D
Think of a real-life application where fractions and decimals could be used. Find 3 pictures related to this real-life scenario and put them on one Google Slide. Write down 5 examples of how fractions or decimals are related to this.
Answer:
1. Cooking
2. Construction
3. On a computer
Step-by-step explanation:
X - 150 = y
x - y = 50
x + y = 180
x = y + 60
what is x?
What is the best estimate of the area of the figure if each square has an area of 4 cm2? On a coordinate plane, a figure contains 30 squares. 30 cm2 46 cm2 92 cm2 118 cm2
Answer: its not 30cm2
Step-by-step explanation:
The best estimate of the area of the figure is 120 cm², which is closest to option D.
How to calculate the area?From the image, we can see that the figure contains 30 squares, and each square has an area of 4 cm².
Therefore, the total area of the figure can be estimated by multiplying the number of squares by the area of each square:
Total area = Number of squares × Area of each square
Total area = 30 squares × 4 cm²/square
Total area = 120 cm²
So, the best estimate of the area of the figure is 120 cm², which is closest to option D.
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3. Sum of digits of a two digit number is 14. When 18 is added to the original number, then the new number is obtained by exchanging the digits of the original number. Express the statements in equation.
Answer:
let the numbers be xy
general form of the number =10x+y
sum of digits of a number =14
x+y=14………[1]
if 18 is added to the number, then digits are interchanged
10x+y+18=10y +x
9x-9y=-18
X-y=-2………[2]
the linear equations are 1) x+y=14
2) X-y=-2
adding [1],[2]
2x=12
x=6
x+y=14
y=14-x
y=14-6
y=8
there fore the number =10*6+8
=68
check:-
1)6+8=14
2)68+18=86
I hope this helped!
Step-by-step explanation:
Ben earns $12,800 a year. About 15% is taken out for taxes.How much is taken out for taxes?
Answer:
10,200
Step-by-step explanation:
Subtract 15% using a calculator.
12,800-15%
a. 3x - 7+9 - 2x = x+2
Simplify equation
Answer:
No solution
Step-by-step explanation:
3x - 7+9 - 2x = x+2
3x-2x-x=2+7-9
0=0
No solution
