Mathematics Middle School

Somebody help me with this question, please!
Two lines, A and B, are represented by the following equations: Line A: 3x + 3y = 12 Line B: x + y = 4 Which statement is true about the solution to the set of equations? (4 points)
Select one:
A. It is (12, 4).
B. There are infinitely many solutions.
C. It is (4, 12).
D. There is no solution.

Answers

Answer 1

Answer:

it is definitely the option of C

Answer 2

Answer:

b infinite solutions

Step-by-step explanation:

3x+3y= 12

when divided by three you get

x+y=4

This can have many solutions such as

x=1 y=3

x=1.5 y=2.5

x=3.99

y=0.01

etc

Related Questions

(SHOW UR WORK) What is the result of 90.425 subtracted from 48.4?


20 points

Answers

90.425-48.4 is 42.025

Answer:

-42.025 hope this helps

Step-by-step explanation:

7b - 15 = 5b - 3




5c + 16.5 = 13.5 + 10c




20 + 3y = 10 - 2y




17 + 4h + 2 = 1 - 5h

Answers

1. 7b-15=5b-3

move 5b and 15

7b - 5b = -3 + 15

2b=12

b=6

2. 5c + 16.5 = 13.5 + 10c

5c=3

c=3/5

3. 20 + 3y = 10 - 2y

-5y=10

y=-2

4. 17 + 4h + 2 = 1 - 5h

19 + 4h = 1 - 5h

-9h=18

h=-2

1. b=6
2. c=3/5
3. y=-2
4.h=2

Determine the area and outer perimeter of the L O V E

Answers

Answer:

L is 75,  O is 114, V is 76, E is 90

Step-by-step explanation:

I did it with Multiplication from the widths, and lengths

Which set of steps can be used to evaluate the expression shown? (1 point)

the expression with the fractions seven eighths times three fifths

Group of answer choices

A. the equation with the fractions seven eighths times three fifths is equal to seven times five over eight times three is equal to the fraction thirty five twenty fourths

B. the equation with the fractions seven eighths times three fifths is equal to seven plus three over eight times five is equal to the fraction ten fortieths

C. the equation with the fractions seven eighths times three fifths is equal to seven plus three over eight plus five is equal to the fraction ten thirteenths

D. the equation with the fractions seven eighths times three fifths is equal to seven times three over eight times five is equal to the fraction twenty one fortieths

Answers

Answer: D

Step-by-step explanation:

[tex]7/8 x 3/5=\\\frac{7}{8} x \frac{3}{5} \\7x3=21\\8x5=40\\\frac{21}{40} \\[/tex]

So the expression is 21 for ? And b and A so its 93

How can this model be used to verify the Pythagorean Theorem?

PLEASE HELP!!!!!!!!

A - Show that perimeters are the same.



B - Show that 16+9=25.



C - Show that 3+4=5.



D - Take the square root of 16.

Answers

Step-by-step explanation:

i think the answer is D but as i said . the base of so many right triangles sides are 3 ,4,5 so if you divide the biggest of them by 5 and divide the medium one by 4 and divide lowest one by 3 you should see a same number i think . but here you cant see

Part F
Find the circumference of the wheel using the formula you found in part E.
--
Activity
A vintage wheel needs to be banded with an iron strip. If the wheel’s radius is 11 inches, how long must the iron strip be to go all the way around the wheel? Complete the steps below to answer the question.

Answers

Answer:

Step-by-step explanation:

first lets find the circumference of the wheel:

[tex]C=\pi *d[/tex]

we have to find the diameter out of the radius:

[tex]d=r*2[/tex]

because the radius is half of the diameter, intrhis case i have to findf the diameter so i do multiply it with 2:

[tex]r=11\\d=??\\d=11*2\\d=22[/tex]

we found the diameter now we are going to find the circumference :

[tex]C=\pi *d\\C=\ 3.14*22\\C= 69.08[/tex]

Another way (easier)to find the circumference is:

[tex]C=2\pi *r\\C=2(3.14)*11\\C=69.08[/tex]

At the end it will hav ethe same answer.

Answer:

69.08 inches

Step-by-step explanation:

substitute the values of r (11 inches) and pi (3.14) in the formula c = 2πr to find c:

c =  2 × 3.14 × 11 inches

c = 69.08 inches.

the circumference of the wheel is about 69.08 inches.

The class is filling boxes that each hold 10 pieces of candy. Maria filled
6

4
5
boxes, Lucas filled
5

1
2
boxes, and Mateo filled
3

7
10
boxes. If they combine their candy and completely fill each box, how many full boxes will there be?

Answers

Answer:

16 boxes

Step-by-step explanation:

6 4/5+ 5 1/2+ 3 7/10

make all fractions with common denominators

6 8/10 + 5 5/10 + 3 7/10

combine like terms

6+5+3= 14

8+5+7 = 20/10 = 2

14+2 = 16

Answer:

550 pieces of candy (total), 150 pieces of candy for Maria, 200 pieces of candy for Lucas, 200 pieces of candy for Mateo.

Step-by-step explanation:

Maria filled

6 + 4 + 5 = 15 boxes of candy.

Lucas filled

3 + 7 + 10 = 20 boxes of candy.

Mateo filled

3 + 7 + 10 = 20 boxes of candy.

x = 10 pieces of candy.

15x = 150 pieces of candy (Maria).

20x = 200 pieces of candy (Lucas).

20x = 200 pieces of candy (Mateo).

150 + 200 + 200 = 550 pieces of candy in total.

Which data set could be represented by the box plot shown below?
A horizontal boxplot is plotted along a horizontal axis marked from 20 to 36, in increments of 1. A left whisker extends from 24 to 27. The box extends from 27 to 33 and is divided into 2 parts by a vertical line segment at 31. The right whisker extends from 33 to 34. All values estimated.
Choose 1 answer:
Choose 1 answer:

(Choice A)
A
242424, 272727, 292929, 303030, 303030, 313131, 323232, 343434, 343434

(Choice B)
B
242424, 252525, 292929, 303030, 303030, 313131, 343434, 343434, 343434

(Choice C)
C
242424, 252525, 292929, 313131, 313131, 313131, 323232, 343434, 353535

(Choice D)
D
242424, 252525, 292929, 303030, 313131, 313131, 323232, 343434, 3434

Answers

B)1,3,6,8,10,12,13,13,16,18,19

Tim and Sasha are making a model sailboat. They want the sail to be in the shape of a right triangle. If the legs of the sail measure 8 and 15 inches, what would be the length of the hypotenuse?

Answers

Around 16 squared is the answer
8^2 + 15^2 = 289
square root of 289 = 17
hypotenuse = 17 inches

(a) 34 is 85% of what number?
(b) What is 15% of 80?

Answers

Answer:

A. 40.          B.12

Step-by-step explanation:

40/34=.85

80*.15=12

Answer:

Part A: 40
Part B: 12

Step-by-step explanation:

Given the following question:

Part A:
34 is 85% of what number?
[tex]\frac{85\times40}{100} =85\times40=3400\div100=34[/tex]
85% of 40 is 34.

Part B:
15% of 80
[tex]\frac{15\times80}{100} =15\times80=1200\div100=12[/tex]
15% of 80 is 12.

Hope this helps.

help ill give brainlest pls

Answers

Answer:

B and C

Step-by-step explanation:

This is because while C is smaller, it has the same angles as B.

I mean I would go with b and c it just seems that those are the only actual reasonable answers there

evaluate 36 / x + 9 when x equals 3

Answers

Answer:

3.

Step-by-step explanation:

Given equation:

36 ÷ x + 9

Given variables:

x = 3.

Solve:

36 ÷ x + 9= 36 ÷ 3 + 9= 36 ÷ 12= 3.
36/x+9 = 3

Multiply all terms by x and cancel:

36+9x=3x

9x+36=3x
(Simplify both sides of the equation)

9x+36−3x = 3x−3x

(Subtract 3x from both sides)

6x+36 = 0
6x+36−36 = 0−36

(Subtract 36 from both sides)

6x = −36

6x/6 = −36/6

(Divide both sides by 6)

x = −6

Check answers. (Plug them in to make sure they work.)

x = −6


(Works in original equation)

Answer: x = −6

What is 2/5 over 3/7?

I need answer pls

Answers

The answer to the equation is 14/15

Answer:

14/15

Step-by-step explanation:

2/5 /3/7  so you do 2/5 *7/3 = 14/15

Please help and hurry!

Answers

A is the best answer…

Work:

-10x-(-4y) will equal -10x+4y the minus minus will cancel out

Please like and brainiest
Answer:
-10x-(-4y)

step-by-step explanation:
-10x-(-4y) = -10x+4y
-(-4y) = positive 4y

2) Thomas wants to find the difference
1/2 (6x - 2) - (2x + 1)

He does the following:

1/2 (6x - 2) - (2x + 1)
3x - 1 - x + 1/2 =
3x + x - 1 + 1/2 =
4x - 1/2

Is this correct? If not, show the correct procedure and explain where Thomas made his mistake.​

Answers

He is not correct, his mistake was multiplying 1/2 to 2x and 1, when you should have multiplied the negative to them.

Answer:

Thomas is not correct, x-2 is the correct answer

Step-by-step explanation:

Thomas made his mistake by multiplying the 1/2 by both (6x-2) and -(2x+1). Thomas should have multiplied the 1/2 by just the (6x-2).

Correct procedure:

1/2 (6x-2)-(2x+1)

(3x-1)-(2x+1)

3x-1-2x-1

x-2

help pls. 20 pts


Match each rational number with a point on the number line.
(Be sure to use the numbers 1 through 4 to indicate which rational number goes in each answer box)

Answers

Answer:

The correct option is Option D) A=-0.7,B=-9/16,C=-0.4,D=-5/16

Step-by-step explanation:

Consider the provided number line.

From the number line we can observed that:

1) A, B, C and D lies between -1 and 0.

2) Point A and B lies between -1 and -0.5

3) Point C and D lies between -0.5 and 0

Therefore, the value of A and B must have a negative value lying between -1 and -0.5

Also, the value of C and D must have a negative value lying between -0.5 and 0.

Now consider the provided options.

Option A) A=-5/16,B=-9/16,C=-0.7,D=-0.4

This is Incorrect representation because the value of C and D should lying between -0.5 and 0.

Option B) A=-0.4,B=-0.7,C=-5/16,D=9/16

This is Incorrect representation because the value of A and B should lying between -1 and -0.5.

Option C) A=9/16,B=-5/16,C=-0.4,D=-0.7

This is Incorrect representation because the value of C and D should lying between -0.5 and 0.

Option D) A=-0.7,B=-9/16,C=-0.4,D=-5/16

Here the value of A and B lying between -1 and -0.5 also the value of C and D lying between -0.5 and 0.

Also they are in ascending order from -1 to 0.

Hence, the correct option is Option D) A=-0.7,B=-9/16,C=-0.4,D=-5/16

Step-by-step explanation:

Jack is a renting a boat to go fishing with his friends. One rental company charges a fee of $20 plus $13.50 an hour. A second rental company charges a fee of $6 plus $17 an hour.

a. Let x represent the number of hours the boat is rented and y represent the total cost of the rental. Write a system of equations to represent the problem situation.

b. Determine when the first rental company will be a better deal for Jack than the second rental company.

Answers

Answer:

The first rental deal will be better after 4 hours

What did the independence movements of Vietnam and Algeria have in common?


a

They were both American colonies.


b

They were both British colonies.


c

They were both French colonies.


d

They were both Japanese colonies.

Answers

Answer:

Its probably D.

Step-by-step explanation:

vietnam is a Japanese Colony and thats all i know

(i hope this helps)

CAN SOMEONE HELP ME HERE PLEASE I ONLY HAVE THESE LEFT AND IM CONFUSED

Answers

Answer: B pickup truck a to b is 200 in 10secs c to d is 300 in 10secs you drive 40 miles in 20 min then you stop to get gas for 10 min then drive 40 miles back for 20 min.

Step-by-step explanation: cocomelan

whoever answers correctly = brainliest

Answers

1. x = 31

2x + x - 3 = 90

3x - 3 = 90

3x - 3 + 3 = 90 + 3

3x + 93

3x / 3 = 93 / 3

x = 31

2.

NPO =

90 - (x - 3) = 2x

90 - (31 - 3) = 2 * 31

90 - (28) = 62

62 = 62

KPN =

90 - 62 = KPN

28 = KPN

Directions: Match the slope and y-intercept values to the correct boxes below.

PLEASE HELP!!!!!!

Answers

Answer:

slope is -3

y-intercept is 3

Step-by-step explanation:

Answer:

y-intercept: 3

Slope: -3

Step-by-step explanation:

y-intercept

To find the y-intercept, see what point on the y-axis (vertical bold line on the graph) the line passes through.

Slope

To find slope, find 2 points (from left to right) on the line and and put the height difference over the width difference in a fraction (simplify if possible). At points (0,3) and (1,0) there is a height drop of 3 (so -3) and a width of 1 and [tex]\frac{-3}{1}[/tex] gives you a slope of -3.

PLs HElp duw in a few secs 50 points!!!!

Answers

Answer:

[tex]f(t)=5 \cdot 3^t[/tex]

The following statements are true:

t = independent variablef(t) = dependent variableWhen f(5) = 1215, the "5" represents "5 years" and the 1215 represents 1215000 which is "1.215 million cars sold"

d, e, and f are all correct

When you see a power raised to another power you should keep the base and multiply the exponents.

True or false​

Answers

Answer:

True hope it helps

The answer is true. Hope this helped!!

A retail shop is replacing their flooring with laminate wood. The floor plan is shown below. Determine the total square feet of laminate wood needed to complete the the job

Who ever gets this right I will give brainliest

Answers

Answer:

its 123 look at the immage

Step-by-step explanation:

Miles owes one of his friends $8. If he borrows $15 from his parents, which of the following expressions could be used to find how much money he owes?

Answers

-8 + 15 can be used as an expression to find out how much money he owes.
-8 + 15 would be the correct answer being that the outcome will show you the exact positive amount that is owed

Matthew made a scale model of the solar system for a science project. He created the planet Mercury with a diameter of 6 inches. According to the scale, what is the actual diameter of Mercury? *

Answers

Answer:

3000

Step-by-step explanation:

I'm learning this right now too!

500×6in=3000

Trying to see who would be the first to answer an easy question-
Right answers onlyyy

Answers

I think if you do 20 multiplied by 5 it would be $100
Total change = 20 times $5 = $100
Total change = quantity times unit of change

24x - 17 x ≥ 13x +15

Pls solve and add the equation if you can thank you :)

Answers

Given :-

[tex]24x - 17 x ≥ 13x +15[/tex]

Solving it,

[tex](24 - 17)x \geqslant 13x + 15[/tex]

[tex] = > 7x \geqslant 13x + 15[/tex]

[tex] = > 7x - 13x \geqslant 15[/tex]

[tex] = > (7 - 13) x \geqslant 15[/tex]

[tex] = > - 6x \geqslant 15[/tex]

[tex] = > x \leqslant - \frac{15}{6}[/tex]

By reducing to lowest terms, we get,

[tex]x \leqslant - \frac{5}{2}[/tex]

So, Value of x is [tex] - \frac{5}{2}[/tex]

Simplifying
24x + -17x = 13x + -15

Combine like terms: 24x + -17x = 7x
7x = 13x + -15

Reorder the terms:
7x = -15 + 13x

Solving
7x = -15 + 13x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-13x' to each side of the equation.
7x + -13x = -15 + 13x + -13x

Combine like terms: 7x + -13x = -6x
-6x = -15 + 13x + -13x

Combine like terms: 13x + -13x = 0
-6x = -15 + 0
-6x = -15

Divide each side by '-6'.
x = 2.5

Simplifying
x = 2.5

help!! struggling in math!!!

Answers

Answer: 22 x 4 = f f=88

Step-by-step explanation:

Multiply 22 and 4 to get 88

F means 88 flowers

Answer:

Equation: 22 * 4.Answer: 88.

Step-by-step explanation:

She picked f flowers.

She got 4 vases, which had 22 flowers in each vase.

If so,

Here is what it is:

4 * 22 = f22 * 4 = 2 * 4 = 8= 20 * 2 = 80= 80 + 8= 88f = 88.

Equation:

22 * 4

Answer:

f = 88.

HELPPPPPPPPPPPPP ME!!!

Answers

Answer:

180 squred feet

Step-by-step explanation:

We simply multiply all three different areas of surfaces by two

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