Mathematics Middle School

42 pointssssss!!! There are two unknowns you are trying to find, and you cannot express one in terms of the other. Describe how you could use algebra to solve for the unknowns.

Answers

Answer 1
you can use a formula like y=mx+b

Related Questions

Find the area of the region bounded by the line y=3x-6 and line y=-2x+8.

A: the x-axis.
B: the y-axis.
C: the line y=6
D: the line x=5.

Please provide the answer and the explanation pls, the explanation is what matters the most. Thank you and have a great day!

Answers

Answer:

A = 12/5 units

Step-by-step explanation:

USING ALGEBRA:

We can find the intersection point between these two lines;

y = 3x - 6

y = -2x + 8

Set these two equations equal to each other.

3x - 6 = -2x + 8

Add 2x to both sides of the equation.

5x - 6 = 8

Add 6 to both sides of the equation.

5x = 14

Divide both sides of the equation by 5.

x = 14/5  

Find the y-value where these points intersect by plugging this x-value back into either equation.

y = 3(14/5) - 6

Multiply and simplify.

y = 42/5 - 6

Multiply 6 by (5/5) to get common denominators.

y = 42/5 - 30/5  

Subtract and simplify.

y = 12/5

These two lines intersect at the point 12/5. This is the height of the triangle formed by these two lines and the x-axis.

Now let's find the roots of these equations (where they touch the x-axis) so we can determine the base of the triangle.

Set both equations equal to 0.

(I) 0 = 3x - 6  

Add 6 both sides of the equation.

6 = 3x

Divide both sides of the equation by 3.

x = 2  

Set the second equation equal to 0.

(II) 0 = -2x + 8

Add 2x to both sides of the equation.

2x = 8

Divide both sides of the equation by 2.

x = 4

The base of the triangle is from (2,0) to (4,0), making it a length of 2 units.

The height of the triangle is 12/5 units.

Formula for the Area of a Triangle:

A = 1/2bh

Substitute 2 for b and 14/5 for h.

A = (1/2) · (2) · (12/5)

Multiply and simplify.

A = 12/5

The area of the region bounded by the lines y = 3x - 6 and y = -2x + 8 between the x-axis is 12/5 units.

There are 90 total days in winter. If it snowed 30% of the days, on how many days did it snow?
Please add an explanation I will mark you as Branliest, please help

Answers

Answer:

o your questions about snow: Is it ever too cold to snow? ... No, it can snow even at incredibly cold temperatures as long as there is some source ... area of the United States, see the average snowfall total table for hundreds of ... Seven days? ... Finally, a Winter Weather Advisory is issued for accumulations of snow

Step-by-step explanation:

You answer is pretty easy it is 60

A TV has listed a price of $723.98 before tax. If the sales tax rate is 9.25%, find the total cost of the TV with sale tax included. Round your answer to the nearest cent, as necessary

Answers

Answer:

Step-by-step explanation:

$723.98 x 0.0925= $66.96815

$723.98+$66.97= $790.95

Round up to $791

your total would be 791$

[(23 × 2.5) , 1 2] + 120
Please solve

Answers

The answer is 810
23*2.5=57.5
57.5*12=690
690+120=810
23 x 2.5 = 57.5 x 12= 690 + 120 = 810

Please answer right!

Answers

Answer:

10

Step-by-step explanation:

The answer is 10 because the fact that each question is worth 10 points does not change at all.

10 is your answer———————

PLZZ HELPPPP MEE WITH THIS GIVING 10 POINTSS!!!

Answers

Uhh d might be 4 because 7 times 4 is 28 and 28+8 is 36
it’s 4 because 36-8= 28. 28/7 is 4.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

I would have to say J.

Step-by-step explanation: Now a square has 4 sides, all equal as well. (I am on PC so I cant do the little 2 on J.) so 2 times little 2 is 4, because with these for example, 2 times little 3 would be 2 times 2 times 2. So 2 times little2 -9 is the most reasonable answer!

3. Julie uses 4 green beads and 6 blue beads in each bracelet she makes. What is the total number of green beads Julie will use when she uses 24 blue beads? Show or explain how you got your answer.

Answers

The answer is 16

exsplain:
24 divided by 6= 4
4x4=16
For every 6 blue beads Julie used she used 4 green and she made 4 brackets so times 4x4 getting you to 16! Hope this helps

The solution is 16 green beads Julie will use when she uses 24 blue beads.

What is division?

Division is the process of splitting a number or an amount into equal parts. Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication.

here, we have,

given that,

Julie uses 4 green beads and 6 blue beads in each bracelet she makes.

Julie will use when she uses 24 blue beads

we have to find the total number of green beads Julie will use when she uses 24 blue beads

so, we have,

4 green beads and 6 blue beads in each bracelet

i.e. green beads : blue beads = 4 : 6

now. let, x green beads Julie will use when she uses 24 blue beads

i.e. green beads : blue beads = x: 24

we get,

4 : 6  = x: 24

so. x = 4 * 24 / 6

24 divided by 6= 4

4x4=16

we get,

For every 6 blue beads Julie used she used 4 green and she made 4 brackets so times 4x4 getting you to 16

Hence. 16 green beads Julie will use when she uses 24 blue beads.

To learn more on division click:

brainly.com/question/21416852

#SPJ2

can you please help me with these three questions please thx !!

Answers

Answer:

A,D,A

Step-by-step explanation:

i know bc i am doing the same exact test lol

nope i’m a dum so maybe a. l. i

Please answer!! What's the slope?

Answers

Zero because it is a straight line so it can be anything without a number so it would be zero
It is zero because it is a straight line

Can someone please help me

Answers

Answer:

80=2x2x2x2x5

Step-by-step explanation:

2 just goes all the way down

80-2/40

40-2/20

20-2/10

10-2/5

80=2x2x2x2x5

80=2x2x2x2x5 is the answer

Marshall charges $22.00 per hour to cut yards in his neighborhood. Use the ratio of Marshall’s hours worked to the amount earned to create and complete a table to show the amount of money he will make if he works a 7-hour day.

Answers

if there are $22 made per hour for 7 hours, you’d add 22 per hour in your table. 1 hour=$22, 2 hours=$44, 3 hours=$66, and so forth. make a table of these numbers up to 7 hours.

Answer:

$$$                   hours

_________________

[    22        '        1        ]

[      44        '          2       ]

[      66        '        3         ]

[       88        '       4         ]

[        110      '         5        ]

[      132       '         6         ]

[_      154___'____7___ ]

Step-by-step explanation:

Give an example of an equation with an infinite number of solutions. Then make one change to the equation so that it has no solution.

An example of an equation with infinitely many solutions: 4x + 3 = 4x +_____
The equation with one change and no solutions: 4x + 3 = ______

Answers

Answer:

I)3   II)4x

Step-by-step explanation:

for the infinite number of solutions you need to make both equations on both sides equal

but in the one for no solution you need to make one number is equal to another number, which is wrong in Math, that's why there's no solution in it

Help i give the crown also!

Answers

Step-by-step explanation:

perimeter = the sum of length of total sides

Pretty sure that this is the correct answer:

10 + 6x mm

Can you help me please?

Answers

Make sure that you are looking at the right boxes

Answer:

Step-by-step explanation:

P1(0, -4)

m=1/2(1 up and 2 right)  

What is the value of x?
11 (9 - 2x) = -(12x + 11)

Answers

The value of x = 11.


Explanation: 99-22x=- 12x - 11


Collect like terms: -22x + 12x = -11 - 99



Divide both sides: -10x = -110 by -10

Answer:

x=11

Step-by-step explanation:

First Distribute 11 to 9 and -2x

Then distribute the negative to 12x and 11

Then calculate like terms

-22x + 12x = -11 -99 which comes out to -10x=-110

Then divide each side by -10

Your answer will then be x=11

The model below represents an equation. Write the equation that is modeled then find what value of x makes the equation true. HELP PLZ PLZ PLZ PLZ

Answers

Equation: 6x-5=4x+5
Answer: x=5

may someone please help me understand something in class? its theoretical and experimental probability basically just probability in a whole and I can’t understand. I don’t need the definition I just want someone to make me understand in a simple way like a tutor, but anyways please help me understand this. Examples would work, anything. Just help me understand. Thanks anyways.

Answers

Experimental probability is the results of an experiment, let's say for the sake of an example marbles in a bag. Experimental probability would be drawing marbles out of the bag and recording the results. Theoretical probability is calculating the probability of it happening, not actually going out and experimenting.

hope this helped.

Okay i know im dum but im 12 in the 4th grade and everyone thinks im 10 but i have a hard question. Does anyone know what 1.5+2.5 is?

Answers

Answer:4 I think could be wrong though

Step-by-step explanation:

Which algebraic expression represents “the quotient of 7 and a number”?
StartFraction 7 Over n EndFraction
7 + n
7 n
7 minus n

Answers

7 over n is the answer

Answer:

7/n or    StartFraction 7 Over n EndFraction

Step-by-step explanation:

quotient means you are dividing

A fraction is also a division problem

Please help

How many points of intersection does this system have?
Y= 3x-4
-3x+y=4
A. Zero points of intersection
B. One point of intersection
C. Two points of intersection
D. An infinite number of points of intersection

Answers

A. Zero points of intersection

the lines are parallel

Answer:

A

Step-by-step explanation:

Plz help me hurry plz
Direct variation

Answers

Answer:

sorry I need some point

Step-by-step explanation:

Answer:

hello apiga how are you? it's been a while xd

Step-by-step explanation:

please help with them all i will give you brainliest

Answers

I don't want to tell you all the answers but, question 7 is 30 and question 8 is 47.

!!!(URGENT)!!! What is the surface area of this figure

Answers

Answer:

36 inches

Step-by-step explanation:

if you unfold the triangular prism and find the area of each individual shape, all you have to do is add them up:

Area Of Rectangle = WL

Area Of Triangle = 1/2(HB)

5x2=10

4x2=8

3x2=6

(4x3)1/2=6x2=12

10+8=18+6=24+12=36

What is the perimeter of the figure on the coordinate plane below?


Answers

Answer:

26 units

Step-by-step explanation:

im not sure if this will help but i counted the spaces and added the halves

The perimeter of the given figure on the coordinate plane is 56 units.

What is perimeter?

A perimeter is the closed path that encompasses surrounds, or outlines either a two dimensional shape or a one-dimensional length.

Now from given figure, the following length of the sides is given,

9 units

4 units

4 units

8 units

11 units

3 units

2 units

15 units

Now since we know that,

Perimeter = Sum of lengths of all the sides

⇒ Perimeter = 9+4+4+8+11+3+2+15

⇒ Perimeter = 56 units

Thus, the perimeter of the given figure on the coordinate plane is 56 units.

To learn more about Perimeter:

https://brainly.com/question/22470354

#SPJ2

What is the slope. Please answer, this is worth 20 points!

Answers

Answer:

2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

The slope is equal to the rise/run of the line, or in other words, the number of units it travels up over the number of units it travels right. We can see on the graph that for every time it travels right 1 unit it travels up 2 units, so the rise/run is 2/1. 2/1 is equal to 2, so therefore, the slope of the line is 2.

I hope this helps!

Jayne bought between 2 and 3 pounds of granola. If the amount of granola she bought was closer to 2 pounds, what is a possible mixed number that could represent the amount she bought?

Answers

Answer:

2 1/4 pound of granola.

Step-by-step explanation:

Imagine a dollar. There's always 4 quarters in a dollar. One is 25 cents of 1/4 of a dollar. Two quarters is 50 cents of 1/2 of a dollar. Three quarters is 75 cents or 3/4 of a dollar and 4 quarters is a whole dollar.

PLEASE HELP ME PLEASE PLEASE...........

Answers

last  bubble one i guess ok

3rd option.
Hope this helps. Pls mark me brainliest

City Hall is planning to construct a new building. The height of each of each triangular shaped face on top of the building will be 75 feet. The diagram shows all the buildings dimensions.


Calculate the total area of the exterior faces of the building (do not include the base area) show your work

Answers

Answerthe

Step-by-step explanation:

Do 182ftx85ft to unlock thh answer

pls help due today or ill fail

Answers

Answer: Ok so I may be wrong but I got 84ft

Step-by-step explanation: The bottom looks like a rectangle so it would be 4 times 12. 4 times 12 equals 48. since the height is 4 it would be 10-4 which equals 6. 6 Times 12 divided by two equals 36. 36 plus 48 is 84.

Other Questions
Determine the mass (in g) of a substance, with a density of 2.26 g/mL, that occupies 350.0 mL. 1. Which is greater 0.045 or 0.405? One of the main things that courts do is create Melinda has 7 yards of fabric to make a banner. How many feet of fabric does she have? How many inches of fabric does she have? What is the least common multiple of 18, 36 and 45? If the current is 10 amps and the voltage source is 200 volts,what is the resistance? Find the volume of the cone.Either enter an exact answer in terms of pie or use 3.14 for pie and round your final answer to the nearest hundredth. Rylee estimated that her dog weighed 23 pounds, but the vet's scaleshowed that he was 26 pounds. What is the percent error? i need help with math problem PLZ HELP ASAP!! WITH GIVE HIGHEST POINTS IF THE ANSWER IS RIGHT!!! What is the mole ratio of water (H20) to phosphoric acid (H3PO4)?P.010 + H2O 4H3PO4BeforeAfter4(4) - 44(4) - 16O 10+1H23(4) - 121:1466:42:2 Two drawings are given below. Drawing 2 is a scale drawing and Drawings 1 is an original drawing.The length of the bottom side of Drawing 2 is ______ cm. please help What number minus one-half is equals to negative one-half Gerunds1.) By incorporating into general linguistic theory a set of linguistic universals, an insistence on naturalness, and the necessity for generalizations, linguists attempt to characterize all human languages.A. object of the prepositionB. subjectC. Subjective complementD. direct object2. I don't think the film is worth seeing?A. appositiveB. subjectC. subjective complementD. direct object3. He is the kind of man who doesn't do even a simple favor without being paid.A. subjectB. direct objectC. appositiveD. object of the preposition Can someone rewrite this plzzzz ASAPMr. Bedford, you should definitely go to the moon. It is a once in a lifetime opportunity and you could not just turn it down. I know that there are risks of failure that could end badly, but it is worth it. You have worked so hard with Mr. Cavor that you can't just give this up. Yes your business had a downfall but that shoukd not stop you. I know that you might be a little scared or unsure if this will work and I can see that. What is you say no, but it works. What if it works and everything goes right, but you missed the opportunity to go to space, to see that stars and the moon, to see our planet in a way no one has ever seen it before. Then would you be sad and angry that you said no. Then would you have wanted to go and wished you said yes. Keep up the good work and you will make it, you will succeed and it will all be worth it. Which set of scientific theories most informed to the literary movement of naturalismA. DarwinismB. PavlovianismC. SpiritualismD. Freudism If two triangles are similar what is true regrading the sides of the two triangles According to John B Gordon, what was the Northern point of view regarding the power of states under the Constitution? Contrast the structures of different governments in terms of how many political parties each one allows. The cost for an eighth-grade party is $450 for room rental, entertainment, anddecorations, plus $20 per person for food. Tickets for the party are sold for $25. What isthe break-even point?