Mathematics Middle School

50 points because this one is difficult! Please help me!!! I don't understand! I will give brainliest and 5 stars. :) Please no links or random answers. I really need help. Thanks to anyone who gives me an answer. :D - Luna

Mr. Martin is giving a math test next period. The test, which is worth 100 points, has 35 problems. Each problem is worth either 5 points or 2 points. How can you set up a system of equations to find how many problems of each point value are on the test?

Let x = the number of questions worth 5 points.

Let y = the number of questions worth 2 points.

Answers

Answer 1

Answer:

Step-by-step explanation:

5x+2y=100

x+y=35

x=10

y=25

Answer 2

x - the number of 5 points worth problems
y - the number of 2 points worth problems

The test has 29 problems.
x+y=29

The test is worth 100 points.
5x+2y=100

The system of equations:
x+y=29
5x+2y=100

The solution:
-2x-2y=-58. | x (-2)
5x+2y=100
divided by
3x=42. (divided by 3)
x=14
14+y=29
y=15

Related Questions

Find the area of a circle with a diameter of 6 feet. Find both the exact area and the area rounded to the nearest

Answers

Answer is =28.27433ft²

Step-by-step explanation:

A≈28.27ft²(Answer)

Diameter

Using the formulas:

A=πr2

d=2r

Solving for A

A=1

4πd2=1

4·π·62≈28.27433ft²

To answer this question we need to use a basic formula to find the area of a circle which is:
pii*radius*radius

Steps:
1. Find the radius

Divide 6 (diameter) by 2 since 2 radius makes up a diameter, so you would get 3 has the radius.

2. Substitute the values

3.14 * 3*3
Which equals 28.26.

Answer:
Exact area—28.26 ft (squared)

Rounded to the nearest tenth—28.3 ft (squared)

Hope this helps!!

A rectangle has an area of 72 in². The length and the width of the rectangle are changed by a scale factor of 3.5.

What is the area of the new rectangle?

Enter your answer in the box.

Answers

Answer:

the area of the new rectangle is 882 in^2

Step-by-step explanation:

Area of new rectangle = (3.5l)(3.5w) = 12.25

12.25 x 72 = 882

Help please I’ll give brianlest if it’s right

Answers

the top right “double sided” i’m pretty sure

please help with this thank youu

Answers

Answer:

D = 106

e = 54

f = 20

Step-by-step explanation:

its ur answer

the answer is f=20 e=54 and d=106

17. If the radius of a circle equals 1.6 cm, find its circumference correct to three decimal places.

Answers

Answer:

10.04cm

Step-by-step explanation:

The radius is 1.6cm . We know that circumference is 2π r ,

[tex]=> C = 2\pi r \\\\ => C = 2\times \dfrac{22}{7}\times 1.6cm \\\\ => \red{ C = 10.04 cm }[/tex]

Solve the given equation.

8x = 168

what is x

Answers

Answer:

The Answer is gonna be 21

EXPLANATION :

8x = 168

x=168/8

x=21

This is the right Answer :3

I hope you are having a great day ❤️

The answer to the equation you have asked is x=21. This is because you divide by 8 on both sides

Sumo-Sumo Gas Company has a tanker-truck for hauling gasoline. The cylindrical tank has a
diameter of 5.4 meters. The tank is 16 meters long. How many cubic meters of gas can the truck
haul?

Answers

Answer: 366.2 cubic meters

Step-by-step explanation:

The cylinder is just a circle but extruded in the 3rd dimension.

The Volume of a cylinder = Area of Circle * Height

V of Cylinder = [tex]\pi[/tex][tex]r^{2}[/tex] * height

r = radius

The radius is half of diameter

Diameter = 5.4 meters

Radius = 5.4 / 2 meters = 2.7 meters

V = 3.14 * [tex]2.7^{2}[/tex] * 16

V = 3.14 * 7.29 * 16

V = 366.2 Meters Cubed

Hope I helped!

I need help so I’m so confused

Answers

Answer:

The 4th one.

Step-by-step explanation:

As you know, the length in cm for each is 4, 6, 4, 3, 5, 6, 5, 4, 3, and 6. So, you must now count how many times 4 is listed, which is 3. Now, you will look at each chart for 3 x's above the number 4. You have now eliminated the middle two. Next, count how many 3's there are, which is 2. Both have those, so eliminating other choices is a no-go. Now, look at how many 5's you have, which is 2. Look at your charts... again, no choice ca be marked-off. Finally, look at how many 6's there are, which is 3. So, look at your last options and find which one has 3 total x's above the 6. And there you go, D.

Hope this helps! :)

If you bought a pizza that is 12 inches in diameter, you get twice as much pizza as you would if you bought a pizza that is 6 inches in diameter. Is this true? Explain your thinking.

Answers

Yes

In general, if the dimensions of any two similar shapes are in the ratio m:n , then their areas are in the ratio m2:n2 .

In your case, two similar pizzas (whether circular, rectangular, or what have you) whose dimensions are in the ratio 1:1 have their areas in the ratio 2:1 . Thus, one 12 inch pizza has the same amount of pizza as two 6 inch pizzas.

I think this answer might help you

Nick went canoeing on the river. He traveled 1 mile in 17 minutes. At this rate, how far
will he travel in an hour and 25 minutes? Show your work.

Answers

Answer:

5 miles

Step-by-step explanation:

1 mile per 17 minutes, the number of miles in 1 hour 25 minutes is the total time/the time it takes to walk a mile, 1 hour 25 minutes/17 minutes = 85/17 = 5 miles

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

When finding the radius or diameter, you divide or multiply by 2 to find the radius (half length of the circle) you divide by 2 and to find diameter (full length of the circle) you multiply by 2
Hope this helps!!

8. Find the volume of the cone pictured. (Give your answer correct to 2 decimal places.)

Answers

This is super easy here is the steps to find the answer:

1. First the base of the cone
Pii*radius*radius

3.14*10*10 which equals 314

2. Now multiply 314 and 14 and you should get 4396

3. Now divide by 3 and you should get 1465.33

Note: the answer is 1465.33333333333 but I just moved it to 2 decimal places.

Hope this helps if so mark me the brainiest!!

I got 1361.36 using the cone formula

Find the area.

5

5
4

4
1

1

square units

Answers

Answer:

4.5 square units

Step-by-step explanation:

A = a + b/2 = 4 + 5/2 times 1 = 4.5

Geometry and Operations help please:)

Answers

1. is A

2. is D (i think, i’m not sure tho)

3. is D

plz help i only need help with 11 12 and 13 and that's it will give brainliest NO LINKS OR I WILL REPORT YOU

Answers

11: Refrain from taking life.
-Refrain from taking what is not given. Not stealing from anyone.
-Refrain from the misuse of the senses.
-Refrain from wrong speech. Not lying or gossiping about other people.
-Refrain from intoxicants that cloud the mind.
12: By converting to Buddhism, members of the lower caste could escape the discrimination they have suffered under the caste system and be treated as equals by other Buddhists.
13: Theravada Buddhism and Mahayana Buddhism.
I hope that helps!!

help me please and thank you (:

Answers

Answer:

Step-by-step explanation:

the rest of the tables have two of the same numbers and it is not a function if it does that.

The answer is B!

In a function, the x input cannot be repeated.

In A, you see that 4 has an arrow pointing to 2 y inputs. That means that 4 is repeated and cannot be a function.

In C, 2 and 5 are both repeated x inputs, so they cannot be functions either.

In D, 0 and -1 both have arrows pointing to 2 y inputs. As stated before, if an arrow points to more than one number, it cannot be a function.

In B, all the arrows point to only ONE y input and none of the x inputs are repeated. Thus, the correct answer is B!

Help?? PLS??ASAP??YES?? TY?

Answers

Answer:

Step-by-step explanation:

Answer:

120 ft

Step-by-step explanation:

12 in. = 1 ft

6 in. = 0.5 ft

-6 in./sec = -0.5 ft/sec

4 min * 60 sec/min = 240 sec

240 sec * (-0.5 ft/sec) = -120 ft

Answer: 120 ft

Jordyn got 15 out of 20 questions correct on her quiz. What percent did she get correct? (Provide the % symbol in your answer)

Answers

Answer:

75%

Step-by-step explanation:

Hello!

I'd love to help.

An easy method to finding a percentage is converting it into a decimal.

First though, we must simplify 15/20, which would be 3/4, (please let me know if you need the process of simplification)

Then we find the decimal.

We divide the numerator by the denominator.

3 ÷ 4 = .75

Which means that our final answer is:

75%

waffletowne

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each equation of the piecewise function represented in the graph to its corresponding piece of the domain.

Answers

Answer:

0 < x ≤ 1 would be f(x) = 1

1 ≤ x ≤ 2 would be f(x) = x

2 < x ≤ 3 would be f(x) = 3

3 < x ≤ 4 would be f(x) = 4

step-by-step explanation:

0 < x ≤ 1 is over the line 1

1 ≤ x ≤ 2 x is the slope of 1

2 < x ≤ 3 is over the line 3

3 < x ≤ 4 is over the line 4

Not mine just copied the answer from the comment of the person who gave no help all the credit goes to the person who commented the correct answer

Step-by-step explanation:

Answer:

Answers above are correct for Plato/Edmentum users

1 ≤ x ≤ 2 = f(x) = x

0 < x ≤ 1 = f(x) = 1

3 < x ≤ 4 = f(x) = 4

2 < x ≤ 3 = f (x) = 3

Step-by-step explanation:

Correct on the test

i chose the lion (50 mph) and the elephant, (25 mph), i need help writing a system of two linear equations showing the distance each animal can
travel to model the fair race. for better look at what im asking help with look at the image! ill give brainlyest!

Answers

So basically sense the lion is 50 and the elephant is 25 that’s half of 50 so if you find the lion’s distance you divide it by to and that’s the answer

How do you know if a graph is exponential???

Answers

When is standing up right with a line

Answer:

The graph passes through the point (0,1)

The domain is all real numbers.

The range is y>0.

The graph is increasing.

The graph is asymptotic to the x-axis as x approaches negative infinity.

The graph increases without bound as x approaches positive infinity.

The graph is continuous.

can u give me the brainliest ?

Will mark brainliest pls answer

Answers

Y =0.5x +2 The y-intercept is found by the coordinates (0,2) and the change is 0.5

plz help frewnds!!!!!!!!

Answers

Answer:

The answer is 18.

Step-by-step explanation:

I did that math and that was what I got.

18 is correct on Edg. 2021

Mark if correct!

2. A triangle has two angles measuring 44 and 47. Determine the measure of the third angle.

Answers

Answer: M{x°}=89

A triangle has 3 sides, and the total degree is 180°. So make a equation to find the third degree (x).

44+47=91
180-91=89
so the measure of the 3rd angle is 89

Set up and solve appropriate equations for m and n .

Answers

Answer:

m=47*; n=52*

Step-By-Step:

One line is 180*degrees

90-38=52*

52+38+43=133*

180-133=47*

Now you know m=47* your left with n.

38+43+47=128*

180-128=52*

n=52*

plz help will give brainliest what is tan 330

Answers

−0.5773. i believe that it’s

Which correctly list the three gases that each make up less than 1 percent of Earth’s atmosphere?

argon, water vapor, carbon dioxide
oxygen, argon, water vapor
nitrogen, oxygen, carbon dioxide
carbon dioxide, oxygen, argon

Please quick!!!! I'll mark brainliest if right!!!

Answers

Answer: hewo, there! your answer is Below

A. argon, water vapor ,and carbon dioxide

Step-by-step explanation:

Hope this helps you!!

Have a great day!!!

The first one argon,water vapor and carbon dioxide

Please help. Need answers

Answers

Answer:

question one: x will eliminate

question 2: x=6

Step-by-step explanation:

question one: -2x+2x=0

question two: 2x+x+3y-3y=18

the y eliminates each other, leaving us with:

3x=18

Divide both by 3

x=6

Your welcome :)

Answer:

Step-by-step explanation:

BRAINLIEST WILL BE GIVEN TO CORRECT ANSWER (stu.pid answers or links will result in DE4TH)
A rectangular bulletin board is 12 inches tall and 27 inches wide. Elena plans to cover it with squares of colored paper that are all the same size. The paper squares come in different sizes; all of them have whole-number inches for their side lengths.

1. What is the side length of the largest square that Elena could use to cover the bulletin board completely without gaps and overlaps? Explain or show your reasoning.

2. How is the solution to this problem related to greatest common factor?

Answers

Answer:

2.=3

Step-by-step explanation:

Answer:

3 inches

Step-by-step explanation:

The dimension of interest is the greatest common factor of 12 and 27.

3 · 4 = 12

3 · 9 = 27

The greatest common factor is 3.

Elena needs squares that are 3 inches on each side.

We need to find the common factor of 12 and 27 since they ask to find a square of the same sides. This plays a key part in making sure it fits in the shape correctly with no overlaps and gaps :)

HAVE A GREAT DAY!!

Help the question is in the pick below

Answers

Answer:

all you have to do is 30% of 27 which is 8.1 so it is 8.1

Step-by-step explanation:

Other Questions

Read this excerpt from "The Open Boat" by Stephen Crane, and then complete the paragraph that follows."If we don't all get ashore" said the captain. "If we don't all get ashore, I suppose you fellows know where to send news of my finish?"They then briefly exchanged some addresses and admonitions. As for the reflections of the men, there was a great deal of rage in them. Perchance they might be formulated thus: "If I am going to be drownedif I am going to be drownedif I am going to be drowned, why, in the name of the seven mad gods who rule the sea, was I allowed to come thus far and contemplate sand and trees? Was I brought here merely to have my nose dragged away as I was about to nibble the sacred cheese of life? It is preposterous. If this old ninny-woman, Fate, cannot do better than this, she should be deprived of the management of men's fortunes. She is an old hen who knows not her intention. If she has decided to drown me, why did she not do it in the beginning and save me all this trouble.. . .In the meantime the oiler rowed, and then the correspondent rowed, and then the oiler rowed. Gray-faced and bowed forward, they mechanically, turn by turn, plied the leaden oars. The form of the light-house had vanished from the southern horizon, but finally a pale star appeared, just lifting from the sea. The streaked saffron in the west passed before the all-merging darkness, and the sea to the east was black. The land had vanished, and was expressed only by the low and drear thunder of the surf."If I am going to be drownedif I am going to be drownedif I am going to be drowned, why, in the name of the seven mad gods, who rule the sea, was I allowed to come thus far and contemplate sand and trees? Was I brought here merely to have my nose dragged away as I was about to nibble the sacred cheese of life?"In Stephen Crane's naturalist story, the repetition of the term "sacred cheese" invokes the idea of . This idea is in keeping with the theme of the story that humans are . Help Ill give brainliest! The list shows the growth in centimeters of students in two years. 6, 7, 8, 8, 8, 8, 9, 9, 10, 11, 11, 12, 14 Which box plot best displays a summary of these data? In science class, students are mixing water and a citric acid solution. The table shows how much water and acid solution two students use. Whose mixture is more acidic? Find the area of the circle with a diameter of 12 m.a 95.64 m2b 112.27 m2C 113.04 m2d 210.36 m2 What is the solution to the equation 4w=2/3?w=2/12w=2/7w=8/3w=3 1/3 Find the function h(x) = f(x) - g(x) if f(x)=3^x and g(x) = 3^2x - 3^x What type(s) of intermolecular forces are expected between SO3 molecules? ball & stick -+labels Indicate with a Y (yes) or an N (no) which apply. dipole forces ___ induced dipole forces ___ hydrogen bonding ___ How would Lyle Britten define Americanness? A sales manager collected data on annual sales for new customer accounts and the number of years of experience for a sample of 10 salespersons. In the Microsoft Excel Online file below you will find a sample of data on years of experience of the salesperson and annual sales. Conduct a regression analysis to explore the relationship between these two variables and then answer the following questions.Open spreadsheetCompute b1 and b0 (to 1 decimal).b1 =____ fill in the blankb0 =____ fill in the blankComplete the estimated regression equation (to 1 decimal).y= ____ + ____x fill in the blank 5xAccording to this model, what is the change in annual sales ($1000s) for every year of experience (to 1 decimal)?____fill in the blankCompute the coefficient of determination (to 3 decimals). Note: report r2 between 0 and 1.r2 =____ fill in the blankWhat percentage of the variation in annual sales ($1000s) can be explained by the years of experience of the salesperson (to 1 decimal)?fill in the blank ____ %A new salesperson joins the team with 8 years of experience. What is the estimated annual sales ($1000s) for the new salesperson (to the nearest whole number)?$____ fill in the blankSalesperson Years of Experience Annual Sales ($1000s)1 2 782 4 943 4 874 4 1045 5 1076 9 1097 9 1248 10 1219 10 12210 14 131 El prximo verano 1 of 1 (ser) muy caluroso. Question 2 with 1 blank Nuevas investigaciones en China indican que los osos panda 1 of 1 (se extinguirn). Question 3 with 1 blank Los cientficos afirman que 1 of 1 (hay) muchas plantas sin descubrir. Question 4 with 1 blank Las partes ms profundas del planeta 1 of 1 (se encuentran) en el centro del Ocano Pacfico. Question 5 with 1 blank La deforestacin de los bosques 1 of 1 (puede) producir tremendas erosiones de suelos. Question 6 with 1 blank El gobierno 1 of 1 (quiere) disminuir el consumo de energa elctrica. Solve the equation 40 = -10(y+0.3). what does the y equal A basin-like formation defined by highpoints and divides that descends into lower elevation is a/an _______. A. Aquifer B. Permeable rock layer C. Watershed D. Water Table The table shows Emily's monthly budget. Emily earns $1,300 a month.Monthly BudgetExpense Amount of MoneyClothes$260Food$350Cell phone$75College savings$195Car payment$300Other$120Which statement is NOT supported by the information in the table? Joyce goes walking on a track shaped like the solid line in the diagram shown. Find the total area enclosed by the track.A. 2,956.5 square metersB. 2,250 square metersC. 3,309.75 square metersD. 2,826 square meters At a point 70 feet from a tree, a forester measures the angle of elevation to the top of the tree to be 62. How tall is the tree to the nearest foot? The Malthusian view of the world argues that Group of answer choices famine in developing countries can be explained by examining their patterns of population growth population growth is helpful to developing countries because it provides a larger rural workforce one way to solve population growth in developing countries is to reduce their foreign debt the problem of population growth is a result of economic underdevelopment the contemporary problem of famine in developing countries is a result of the colonial legacy Un movil avanza a 20 m/s y recorre una distancia de 800 km. Determinar el tiempo en horas que utiliza What does putting on the sweater, even though it isnt hers, reveal about Rachel?She sticks up for herself when she knows she is right. She will do what she is told, especially when facing conflict. She can be talked into liking something that she does not like. Item 11A 10-foot ladder leans against a wall so that it is 6 feet high at the top. The ladder is moved so that the base of the ladder travels toward the wall twice the distance that the top of the ladder moves up. How much higher is the top of the ladder now? (Hint: Let 82x be the distance from the base of the ladder to the wall.)