Sylvain spent a total of 18 hours on English and math homework over the last 3 weeks. He spent twice as much time on English than on math. Let x represent the number of hours spent on English and y represent the number of hours spent on math.

x + y = 18. x = 2 y.

What is the solution of the system of equations?
(12, 6)
(6, 12)
(9, 9)
(15, 3)

Answers

Answer 1

Answer:

12, 6

Step-by-step explanation:

we have two equations

x + y = 18 .... . (i)

and x = 2y .... .(ii)

substituting the value of x from eq. (ii) in eq. (i)

2y + y = 18

3y = 18

y = 6

putting this value if y in equation (ii) to get x

x = 2 × 6

= 12

therefore,

(12, 6) is the solution to the system of equations

Answer 2
x = 2y

2y + y = 18 x + y = 18
3y =18 x + 6 = 18
y = 6 x = 12


(12,6)


Related Questions

help plz its due tomorrow​

Answers

Answer:

Go to Slader.com and select the grade lvl and click the page number

Step-by-step explanation:

hope this helps

Slader.com

Step-by-step explanation:

Which system of equations has no solution?

Answers

Answer:

B.

[tex]{ \binom{7x - 2y = 9}{7x - 2y = 13} }[/tex]

B has no solution ! Hope this helps, sorry if I’m with wrong

3. Solve for m:
-5m + 3 - 2m = -7m + 4 + m
1
m
12
m =
la
m = -1
m = 1

Answers

3-4=-7m+m+2m+5m
-1=m
Answer:
m=-1
-5m + 3 - 2m = -7m + 4 + m
-5m -2m +7m -m = -3 +4
-m = 1
m = 1

Give three equivalent rates that describe the top speed of a tuna.​

Answers

27 miles per hour 29 miles per hour and 32 miles per hour
27, 29, and 32 miles per hour

HELP ASAP PLZZZZZZZ If the side lengths of a cube are 15 feet, what is the correct way to write the expression to represent the volume of the cube in exponential form?

15 ⋅ 15 ⋅ 15
15 ⋅ 3
315
153

Answers

Answer:

D

Step-by-step explanation:

It's a guess because none of them look like the exponential form. However, I think D is probably the answer you want.

On this site it should be written as C = 15^3.

The correct anwser is D

Step by step on how to do this plz

Answers

The answer is 512!!!!!!

What is the volume of this rectangular prism?
Is it 3/2 x 1/4 x 5/3??

Answers

Volume = length x width x height

Volume = 3/2 x 1/4 x 5/3

3/2 x 1/4 = 3/8

3/8 x 5/3 = 15/24

Volume = 15/24 cm^3

Answer: 15/24

Step-by-step explanation:

3/2 x 1/4 x 5/3

Hi! So, I need help. (Look at Screenshot below)

Answers

Answer:

(2 + 3/7) + 4/7

Step-by-step explanation:

(2 + 3/7) + 4/7

Regrouping

2 +(3/7+4/7)

2 +(7/7)

2+(1)

3

The answer is 3 because 3/7 + 4/7 makes 1 whole and 2 + 1 = 3

one-half of the people at a game wore hats. two-thirds of those people also wore gloves. one-fourth of those people wearing gloves and hats also wore scarves. 25 of the people had hats and scarves but no gloves. One hundred people had only scarves. If there were 1824 people, how many had scarves
Please give answer as soon as possible

Answers

Final Answer: 277 people had scarves.

Step-by-step explanation:

1/2 people wore hats2/3 people wore also wore gloves.1/4 people wore scarves.25 people had hats and scarves. (no gloves)100 people have only scarves.1824 people total

1824 / 2 =  912 (Divide by 2 to get the people wearing hats)

912 / 3 = 304 (subtract 304 to get 2/3)

912-304 = 608

608/4 = 152. (people who wore gloves, hats, and scarves.)

152+100+25= 277

Answer:

1111

Step-by-step explanation:

1111223

ILL MARK BRAINLIEST TO FIRST CORRECT ANSWER

Dave solved a quadratic equation. His work is shown below, with Step 111 missing.
What could Dave have written as the result from Step 111?
\begin{aligned} \dfrac{1}{3}(x+4)^2&=48 \\\\ &&\text{Step }1 \\\\ x+4&=\pm 12&\text{Step }2 \\\\ x=-16&\text{ or }x=8&\text{Step }3 \end{aligned}
3
1

(x+4)
2

x+4
x=−16


=48
=±12
or x=8


Step 1
Step 2
Step 3


Choose 1 answer:
Choose 1 answer:

(Choice A)
A
\left(\dfrac{1}{3}x+\dfrac{4}{3}\right)^2=48(
3
1

x+
3
4

)
2
=48left parenthesis, start fraction, 1, divided by, 3, end fraction, x, plus, start fraction, 4, divided by, 3, end fraction, right parenthesis, squared, equals, 48

(Choice B)
B
\left(\dfrac{1}{3}x\right)^2+\left(\dfrac{4}{3}\right)^2=48(
3
1

x)
2
+(
3
4

)
2
=48left parenthesis, start fraction, 1, divided by, 3, end fraction, x, right parenthesis, squared, plus, left parenthesis, start fraction, 4, divided by, 3, end fraction, right parenthesis, squared, equals, 48

(Choice C)
C
(x+4)^2=144(x+4)
2
=144left parenthesis, x, plus, 4, right parenthesis, squared, equals, 144

(Choice D)
D
(x+4)^2=16(x+4)
2
=16

Answers

Answer:

C is the correct answer

Step-by-step explanation:

Dave solved a quadratic equation his work is shown below with step 111 missing

The real estate term lake frontage refers to the distance along the edge of a piece of property where it touches a lake. Determine the lake frontage of Lot B to the nearest tenth.

answer fast

Answers

Answer: Part a) The lake frontage  of lot A is 50.9 yd

Part b) The lake frontage  of lot B is 58.4 yd

Part c) The lake frontage  of lot C is 64.7 yd

Part d) The prices of the other lots, from least to greatest, are $286,836.94  and $317,779.96

Step-by-step explanation: Took this test in middle school and im now in 10th grade... your welcome.

Express each of the following decimals as a percentage
1.35
solution for class 7

Answers

Answer:

135%

Step-by-step explanation:

To represent a decimal to percentage, multiply by 100

1.35 x 100 = 135

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

the answer would be 135%

Help me Guess just help pleaseeeeeeee

Answers

Answer:

A, C, D, and F are the rational numbers.

A C D and F are the answers

help pls :( I only need one question to pass

Answers

Answer:

The 3rd semi-circle equals 31.

Step-by-step explanation:

Since the Pythagorean Theorem states that "The sum of the areas of the two squares on the legs (a and b) equals the area of the square on the hypotenuse (c)," we can find the answer of the 3rd semi-circle by finding the sum of each of the 2 smaller semi-circles and adding them together.

the answer to this question is 31 the area of the A3 is 31

Divide Decimals by Decimals.
Fill in the blanks:

Steps:
1. Make the outside number whole (move the decimal point to the _________.)
2. However many decimals places you moved on the outside number, you must move it over the ________ amount on the inside number.
3. Put the decimal point on the elevator and bring it up on the roof.
4. Divide as with whole numbers.

Answers

Answer:

1-Left

2-same

Answer: 1) right

              2) same

Please help thx and I will mark you as brainliest!

Answers

First one : y=1/3x+4.32

Second one: y=3x-2

Explanation:  try Desmos. its a magical machine

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (5, 6) and (x₂, y₂ ) = (- 1, 4)

m = [tex]\frac{4-6}{-1-5}[/tex] = [tex]\frac{-2}{-6}[/tex] = [tex]\frac{1}{3}[/tex] , then

y = [tex]\frac{1}{3}[/tex] x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 1, 4 ) , then

4 = - [tex]\frac{1}{3}[/tex] + c ⇒ c = [tex]\frac{12}{3}[/tex] + [tex]\frac{1}{3}[/tex] = [tex]\frac{13}{3}[/tex]

y = [tex]\frac{1}{3}[/tex] x + [tex]\frac{13}{3}[/tex] ← equation of line

-----------------------------------------------------------------------

The equation of a line in point- slope form is

y - b = m(x - a)

m is the slope and (a, b) a point on the line

Here m = 3 and (a, b) = (- 2, 0 ) , then

y - 0 = 3(x - (- 2) ) , that is

y = 3(x + 2)

y = 3x + 6 ← equation of line

Someone please help me with this :,D

Answers

Answer:

A hostel has provision for 45 students for 30 days.If 15 more students joined the hostel after 6 days,how long will provision last?

Answer:

It's the second answer

Step-by-step explanation:

It's the second question because the pattern is that the amount of food coloring is always 3 times more then the amount of frosting so it's point M because the amount of frosting is 50 so the amount of food coloring has to be 150 according to the ratio.

(06.05 LC)

The two-way table shows the number of students in a school who like music and/or dance.

Like Music

Do Not Like Music

Total

Like Dance

23

?

42

Do Not Like Dance

15

11

26

Total

38

30

68

What is the missing number in the table? (1 point)

19
31
53
65

Answers

The answer is 19
The total is 30 and if 11 like to dance you add 19 to 11 and get 30.

Answer:

the user on top is correct

Step-by-step explanation:

Help!!
I need help with my math!!

Answers

Step-by-step explanation:

[tex]thank \: you[/tex]

50+75=125
125-180=55
The answer equal to 55

pls help… I don’t understand this stuff

Answers

7 is 3. you are just flipping the equation

same thing for 8 (16)

9 do 20x18 then multiply that by five.

10 just add all four numbers

11 let me look up distrutive property rq bc i forgot

The person above me is right I hope
You all have a wonderful day

The number of revolutions made by a bicycle wheel of 28-inch diameter in travelling 1/2 mile is closest to:
(A) 720
(B) 180
C) 360
D) 120

Answers

Answer:

C. 360

Step-by-step explanation:

Answer:

C) 360

Step-by-step explanation:

Will Mark Brainliest If Correct Answers! Need Some Help Please

Given the expression: 4x10 − 64x2

Part A: Rewrite the expression by factoring out the greatest common factor. (4 points)

Part B: Factor the entire expression completely. Show the steps of your work. (6 points)

Answers

Answer:

Step-by-step explanation:

a) 4x¹⁰ = 2² * x¹⁰

   64x² = 2⁶ *x²

GCF = 2² * x² = 4x²

b) 4x¹⁰ - 64x² = 4x²*(x⁸ - 16)

                  =4x² *[ (x⁴)² - 4²]

                  = 4x² * (x⁴ + 4) (x⁴ - 4)

                  = 4x² * (x⁴ + 4)* [(x²)²- 2²]

                  =4x² * (x⁴ + 4) * (x² + 2)(x² - 2)

                 

Find the area of the figure in the image attached. Round to the nearest tenth if necessary.

Answers

Answer:

186 cm²

Step-by-step explanation:

*First we can move the shape around a bit to make it simpler to solve. If we take the triangle from the left side and move it over to the right, it connects with the other piece to create a rectangle. This leave two rectangles total which is much easier to solve.

*To find the length of the right rectangle, you take the 22 cm at the bottom and subtract the 12 cm (which is being used as the length for the left rectangle). This will give you a length of 10 cm long.

Left rectangle:

A = lh

A = 12 (8)

A = 96 cm²

Right rectangle:

A = lh

A = 10 (9)

A = 90 cm²

Total:

A = 90 + 96

A = 186 cm²

186cm 12 x 8 x 9 x 22

Answer yes ooh ooh ahaha

Answers

Answer:

probably first one but i might be wrong

Step-by-step explanation:

if it has line under its filled circle and the direction the point is facing is where line goes

Answer:

1

Step-by-step explanation:

Please help me! I will give brainly!

Answers

Answer:

8

Step-by-step explanation:

You multiply the candies sold, by 8 to get the money raised.

10 times 8 is 80.

20 times 8 is 160

30 times 8 is 240

And so on.

I hope this helps!

pls ❤ and give brainliest pls

Divide money raised by candles sold:

80/10 = 8

160/20 = 8

Etc.

Each candle cost $8

You would multiply the number of candles sold by $8 to find the amount of money raised.

fr33 p0ints/ umm? please help me with this question

Answers

Last choice Bc -1.5 is x value so go right and -1 is y value that goes down Bc it’s negative
A because negative means moves to the right when it comes to x axis and when it comes to y axis you move down the amount of spaces. if positive on x axis move right and positive on y axis move up

Another question pls have a explaination if you know u are correct

Answers

Answer:

11x+30

Step-by-step explanation:

The value of a number whose units digit is x and whose tens digit is three more than the units digit

The number is yx

We know y is x+3

(x+3) *10 +x

Distribute

10x+30 +x

Combine like terms

11x+30

Answer:

i need to upgrade to see the answers

Step-by-step explanation:

SOLVE OR SIMPLIFY THIS!! -6-(2x+7)=-2(x+6)-1

Answers

[tex]\\ \sf\longmapsto -6-(2x+7)=-2(x+6)-1[/tex]

[tex]\\ \sf\longmapsto -6-2x-7=-2x-12-1[/tex]

[tex]\\ \sf\longmapsto -2x-13=-2x-13[/tex]

[tex]\\ \sf\longmapsto 2x-2x=0[/tex]

[tex]\\ \sf\longmapsto 0[/tex]

Answer:

Step-by-step explanation:

(2x + 7) = - 2(x + 6) - 1

2x + 7 = - 2x + 12 - 1

2x - 2x = 12 - 7 - 1

0x = 4

= 4

1
Mrs. Johnson wants to give items to her afterschool group. She has 36 prizes and 24 ballons. What is the greatest number of children she can have in her group so that each child gets equal number of prizes, and an equal number of ballons?
2
Two radio stations are playing this week's #1 hit song. One radio station plays the song every 18 minutes. The other radio station plays the song every 24 minutes. Both stations play the song at 3pm. How many minutes will pass before they play the same song again. (Only write the minutes.)

Answers

Answer:

1) 12

2) 72

Step-by-step explanation:

1) The GCF of 36 and 24 is 12. So, each child would get 3 prizes and 2 balloons.

2) The LCM of 18 and 24 is 72. When the first radio station is playing the song for the fourth time, the second radio station will play the song for the third time. This will happen 72 minutes after they both play it for the first time.

Answer:

1. 12 children

2. 72 minutes

Step-by-step explanation:

1. Find the GCF of 36 and 24, which is 12

2. Find the LCM of 18 and 24, which is 72

Which list shows the order of the numbers from greatest to least? List 1: 2.3, 2.03, 2.5, 0.25 List 2: 0.25, 2.5, 2.03, 2.3 List 3: 2.03, 2.3, 2.5, 0.25 List 4: 2.5, 2.3, 2.03, 0.25

Answers

Answer:

4

Step-by-step explanation:

2.5, 2.3, 2.03, .25

List 4!
2.5,2.3,2.03,0.25
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