Mathematics Middle School

Help please with these solutions

Help Please With These Solutions
Help Please With These Solutions

Answers

Answer 1

Answer:

a

Step-by-step explanation:

just needed the points, sorry

Answer 2
Answer:
1.a
2.b
3.c
4.d

Related Questions

HELP ASAP PLSPLSPLSPLSPLSPLSPLSPLSPLSPLSPLSPLSPLSPLSPLS


A special machine is used at a construction site to dig holes. A hole is dug to a depth of 4.75 feet when the machine hits rock. The progress slows to 3/5 feet per hour of digging. The depth of the hole must be at least 12 1/2 feet by the end of the day to stay on schedule. What is the minimum amount of time the machine must continue at its present rate to complete the hole on schedule? Select from the drop-down menus to correctly complete the statement.

Answers

Answer: 12 h ; 45 m

Step-by-step explanation:

*Important: From what I can see in this image, this appears to be a test. If this is the case, please do not cheat. In any case, here is the explanation.

What we know:

Progress has been made to 4.75Rate of digging is 3/5 mphDepth must be at least 12 1/2We need to find the minimum amount of time the machine works

How to solve:

By setting up an algebraic equation, we can solve this.

Process:

Set up equation                            4.75 + 3/5x = 12 1/2Convert                                          19/4 + 3/5x = 12 1/2

                                                                95/20 + 12/20x = 250/20

Subtract                                           -95/20                 -95/20

                                                                               12/20x= 155/20

Isolate x via division                                       /(12/20) /(12/20)+Simplify                                                          

                                                                                         x= 12 11/20

Convert                                                                    12 h 33 m

Solution: 12 ; 45

The minimum amount of time taken by the machine will be 12 hours and 55 minutes.

What is the solution to the equation?

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

An exceptional machine is utilized at a building site to dig openings. An opening is dug to a profundity of 4.75 feet when the machine hits the rock. The advancement eases back to 3/5 feet each hour of digging. The profundity of the opening should be no less than 12 ¹/₂ feet before the day's over to remain on time.

Convert the mixed fraction number into a decimal number.

12 ¹/₂ feet = 12.5 feet

Let 'x' be the time. Then the equation is given as,

(3/5)x = 12.5 - 4.75

Simplify the equation, then we have

(3/5)x = 12.5 - 4.75

(3/5)x = 7.75

x = 12.9167

x = 12 + 0.9167 x 60

x = 12 hours and 55 minutes

The base measure of time taken by the machine will be 12 hours and 55 minutes.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ2

Sam’s discount shoes is have a 40 percent off sale. A — use the percent ruler at right to find how much Lorna will save on her purchase of 80 dollar professional basketball shoes. B What will she pay for the shoes?

Answers

Answer:

A, 32

B, 48

Step-by-step explanation:

Since the discount is 40% off, she will save 40% of the 80 dollar shoes, which is 40% of 80 dollars. 40 * 80 = 3200, and 3200/100 = 32 dollars worth of savings. She will pay a total of 80 dollars minus the 32 dollar discount to get a total of 48 dollar payment.

Answer:

40% off that means her shoes will be 60% of the value so 80* 0.6 or 60% = $48 she will pay and 32 she will save

Given: x + 5 ≥ 10. Choose the graph of the solution set.

Answers

Answer:

We'll want to end this one with x ≥ another value.

Step-by-step explanation:

So, subtract 5 from both sides.

x+5≥10

-5    -5

x≥5

So, x must be greater than or equal to 5.

Select all the fractions that are equivalent to 4.05¯¯¯¯¯.
405/99
401/99
81/33
802/198
405/100 (can only give 2 answers, so yea...)

Answers

It is 401/99 and 405/100

But if you only want one answer, then do 405/100

Hope this helps! :)
401/99 and 802/198. this can be proven by dividing 401 by 99, and dividing 802 by 198. you also know these are equivalent fractions since 401/99 times 2 is equal to 802/198 (recognizing this is not necessary, but it could help). hope this helps :)

Solve 3(x−13)=y−2 for y. Then tell whether x and y show direct variation. Please help me with this. 60 points!

Answers

Answer: if you put 60 points onto the question it divides it by 2 for 2 different question get half of what it is so if you want each person to get 60 you need to add 120 points

Step-by-stepStep-by-step explanation:

Answer:

y=3x+13

Step-by-step explanation:

The manager of a local automobile store wants to conduct a customer satisfaction survey. Who should the manager survey to best find out what he wants to know?

Answers

Answer:

the customers

Step-by-step explanation:

because they are the main target of this survey

Answer: The customer

include explanation pls

Answers

Answer:

less than mean subtraction

twice means 2 times

Step-by-step explanation:

if the amount raman collects is x, and kusa collects 5 less than 2 times the amount raman collects, that would mean 2x-5.

8 2/9 - 2 2/3

NO LINKS OR ABSURD, OUT OF CONTEXT ANSWERS, THANK YOU.

Answers

Answer: 5 5/9

Step-by-step explanation:

try it

Change them into improper so 74/9 then 2 2/3 improper is 8/3 so 74/9 minus 8/3 so 5 5/9 hope this helps!

Solve for b.

b - 7 = -20
A. b = -27
B. b = -13
C. b = 13
D. b = 27

Answers

Answer:

B. b = -13

Step-by-step explanation:

b - 7 = -20

move variables and numbers to different sides of the equal sign by adding 7 to both sides

b - 7 + 7 = -20 + 7

b = -13

your answer would be -13 :) have a good day

Because of demand, concert tickets that normally sell for 89.99 each are marked up 20%, If Mark wishes to purchase 8 tickets, how much will he pay in total?

20 points will be given

Answers

Answer:$863.92

Step-by-step explanation:20% of 89.99 is 18

89.99x8=719.92

18×8=144

719.92+144=

863.92

Answer:

he will pay 864 dollars in total

Step-by-step explanation:

first we have to find 20% of 90 (i just rounded 89.99 to 90).

20% = 1/5, and 1/5 in decimal form is 0.20.   (you can find the decimal value by multiplying the numerator and denominator by 10/10 and then simplifying it)

0.20 * 90 is 18, so we then add that to 90 making 108.

next, since Mark is buying 8 tickets, we multiply 108 by 8, giving us 864

therefore, 864 is our final answer

Sergio claims that StartFraction 20 Over 20 EndFraction = 1 percent. Which statement is true regarding his claim?

Answers

Answer: You dont give the statement. But 20/20 is 100% if that helps!

Step-by-step explanation:

PLS ANSWER, ALL THE QUESTIONS IN THE PICTURE. ITS DUE SOON PLS HELP, SHOW WHO U SET UP EACH PROBLEM .

Answers

Answer:

3. It's b and c   4. total number of participants in marathon=99+121=220 percentage of female = 121/220×100 =55%   5. the answer is 7

Step-by-step explanation:

A. Are the expressions 3(m−2) + 2(m−2) and 5(m−2) equivalent expressions?

B. In two or more complete sentences, justify your answer to A.

Answers

The answer is yes. If you solve both expressions it would be 5m-10.

Answer: yes, this is because when you solve the first equation then your answer will be 5(m-2). You do this by distributing 3 to m & 2 (multiply), then you will distribute 2 to m & 2 (also multiply).

Step-by-step explanation:

Evaluate 6 m plus 1 for m equals negative 2. NO LINKS

Answers

Answer:

-11

Step-by-step explanation:

first substitute m for -2. now the equation is 6(-2)+1. next multiply 6 by -2 and you get -12. now add 1 to -12 and you get -11

6 (-2) + 1= -11 would be the answer

(PLEASE HELP) To feed 7 horses for 4 days, Mark needs 420 kg of grass. How many kilograms of grass does Mark need to feed 9 horses for 6 days?

Answers

Answer:

810kg is the answer

Step-by-step explanation:

Hope this helps:)

420 divided by 4 is 105 so each day 7 horses eat 105 kg of grass,
105 divided by 7 = 15 so each horse intakes 15 kg of grass per day

9x15=135
135x6 =810

Bruce walks 3/4 mile in 1/5 hour. What is his speed in miles per hour? (label your answer mph) * worth 25 points and brainlyiest pls no links or deleting this Ty

Answers

The answer to this question is 3.75

PLEASE ANSWER BOTH QUESTIONS. Use Graph to help answer them. NO LINKS.

Answers

A- 12 seconds 1/5 minutes
B- 5

Maria has already written Two-fifths of her 1,000-word essay. If she continues writing at the same pace of 6 1/2 words per minute, which expression shows the amount of time it will take her to write the rest of the essay?

1000 times two-fifths times 13/2
1000 times two-fifths divided by 13/2
1000 times three-fifths times 13/2
1000 times three-fifths divided by 13/2

Answers

Answer:

I think it's C

Step-by-step explanation:

if you multiply 1000 by 2/5 you would get 400 and if you divide 400 by 13/2 which is also equivalent to 6 and 1/2 you would get 15.38 which i assume is the time itll take her to finish her essay.... plus if u multiply 400 by 13/2 u get 2600 which i doubt it takes her like 43 hours to finish an essay of 1000 words

PLS HELP URGENT WILL GIVE 25 POINTS AND Brainliest

Answers

Answer:

Ok

Step-by-step explanation:

D.

C.

B.

:)

ok

can u pls brainlyest me

Answered up there .. d c b ^^

Someone help me with this please, I really need help and its due tmrw...PLEASE

Answers

Answer:

The number of hours a student should spend on their homework to expect a 94 on the quiz.

It’s 94 because it’s says

If anyone can figure the answer, please tell me. Anything would be helpful :)

I have to master 20 lessons for khan all 100% and it's very difficult for some of them.

Answers

4/2 I believe srry if it’s wrong, hope that helps
The simplified version is 2

3. Given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solution. Show why this is true by solving the system of equations given. Justify the reason for each step. HINT: Use the addition property of equality and multiplication property of equality in your answers. (8 points: 1 point for each question)

5x + 2y = 7
3x – y = 2

To solve the system using elimination, first multiply the bottom equation by 2. Write the new system of equations. (1 point)

Why is this multiplication allowed? (1 point)

What variable will be eliminated when the equations are combined after

the multiplication? (1 point)

Next, add the equations together. Your answer should be a single equation with one variable. (1 point)

Why can you add the equations? (1 point)

Solve the equation for x. (1 point)

Substitute x back into one of the equations to solve for y. (1 point)

What is the solution to the system of equations? (1 point)

Answers

Answer:

Step-by-step explanation:

To solve the system using elimination, first multiply the bottom equation by 2. Write the new system of equations. (1 point)

5x + 2y = 7

6x –2y = 4

Why is this multiplication allowed? (1 point)

Because the entire equation was multiplied by the same number, the equation remains the same.

What variable will be eliminated when the equations are combined after  the multiplication? (1 point)

The Y variable

Next, add the equations together. Your answer should be a single equation with one variable. (1 point)

11x = 11

Solve the equation for x. (1 point)

X = 1

What is the solution to the system of equations? (1 point)

X = 1 and Y = 1 so the answer is (1, 1)

(If you solve this again, but eliminate the X variable, you will still receive that answer 1, so Y = 1)

Sorry my first answer was wrong

Which term best describes the relationship between the two events described below?

When a bowler gets 12 consecutive strikes in a game, he bowls a perfect game.

A. causation

B. The events are not related.

C. correlation

D. implication

Answers

maybe C? sorry i’m not the best at this

Answer:b

Step-by-step explanation:

5(20 + ) = 100 + 95 im tryna watch anime but i gotta do another test

Answers

I think it would be 195 or it might be 195 or it might be 195 or it might be 195

Answer:

100=195

Step-by-step explanation:

Im sorry it sort of makes no sense since because of the +.

The table shows four transactions and the resulting account balance in a bank account, except some numbers are missing. Fill in the missing numbers.

Answers

For transaction 3 it should be -155.15 and for transaction 4 it would be -223.75

The camp has an elevation of 2700m. It is 1500m east of the origin. What are the camp's x and y coordinates?

Please help!! will give brainliest. Will be helpful

Answers

(1500,2700) hope this helps

It wasn't all that bad. The snowmobile only needed towing out. From that incident, she owes them $42. How much is her total debt to her parents?

Answers

42 dollars
dnsbsjanshsbaushsgs
I got you!
Answer is: 42$ to her parents!

Michael consumes a 16-ounce bag of potato chips and 12-ounce bag of pretzels every day after school. How many more ounces of potato chips than pretzels will Michael have eaten at the end of a 5 day school week?
A.
20 ounces
B.
80 ounces
C.
60 ounces
D.
28 ounces

Answers

Every day, Michael consumes 4 more ounces than the pretzels. Multiply 5 by 4 to recieve the answer:

4 x 5 = 20

So the answer is A.

The awnser is d 28 ounces

I don't get this I need help

Answers

Answer:

6 dollars per person a

then 20 then and the party host and the helpers b

c that is asking what is the total cost in all if it was a profit or no

Mr. DaCosta and his workers are tiling a bathroom wall using square-inch tiles. The area of the wall is 6,048 square inches. There are 72 rows of tiles.


How many tiles are in each row?
A.
85
B.
84
C.
840
D.
805

Answers

I would try to X out the lower numbers

Answer: B.84

Step-by-step explanation:

1) Substitute the given information into the equation Area= length * width

2) 6,048 = 72 * x

3) Divide by 72 to find x

6,048/72 = 84

4) The answer is 84 tiles in each row

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