Mathematics Middle School

Explain the impact of planes and pulleys on work and force. Select the facts that are accurate.
o planes and pulleys can decrease the level of force required to move an object
O planes and pulleys can decrease the level of work to move an object
o planes and pulleys can increase the speed of completed work
o planes and pulleys can change the direction of applied force

Answers

Answer 1

Answer:

a b

Step-by-step explanation:

Related Questions

0.3 divided by 2.51 plz ansewer

Answers

0.753 should be your answer

Answer:

0.11

Step-by-step explanation:

:3 have a nice day !!

Can someone round this to the nearest tenth
3.14 x 4 x 4 x 7
or
3.14 x 7 x 7 x 4
A- 124.6
B- 87.9
C- 97.5
D- 78.9

Answers

Answer:

I think its A

Step-by-step explanation:

I did the math and thats what i got even rounded up

The value of the expression 3.14 x 4 x 4 x 7 is  351.4 and for expression 3.14 x 7 x 7 x 4  is 615.4.

To round the expression to the nearest tenth, we need to evaluate it first. Let's calculate each expression:

3.14 x 4 x 4 x 7 = 351.36

3.14 x 7 x 7 x 4 = 615.44

Now, let's round each result to the nearest tenth:

Rounding 351.36 to the nearest tenth gives us 351.4

Rounding 615.44 to the nearest tenth gives us 615.4

Based on the given options, neither result matches exactly.

However, option A (124.6) is the closest rounded value to 351.4.

To learn more on Expressions click:

https://brainly.com/question/14083225

#SPJ6

pls help with 22 and 23

Answers

Hey Samia Mansuri i perrty sure the answer is a if not it has to be b

question 22 is B and 23 is 100 because 40x2= 80 and 40/2= 20 and 80+20=100

Melanie can run around the track 9 times in 28 minutes. At this rate, how many laps can she run in 1 hour and 15 minutes?

Answers

Step-by-step explanation:

First step is to identify what the problem is asking for and what is given.

9 laps in 28 minutes

Searching for number of laps in 1 hour and 15 min.

1 hour + 15 min. = 75 minutes convert to minutes

9 laps / 28 minutes = x laps / 75 minutes create an equation

9/28 = x/75

9*75 = 28x cross multiply

675 = 28x

x = 675/28 = 24.12 simplify

Melanie can run 24 complete laps in 1 hour and 15 minutes.

2(x+5)=3x+1
x=?
please solve

Answers

Answer:

x=9

Step-by-step explanation:

expand 2(x+5) : 2x+10

2x+10=3x+1

subtract 10 from both sides

2x+10-10=3x+1-10

simplify

2x=3x-9

subtract 3x from both sides

2x-3x=3x-9-3x

simplify

-x=-9

divide both sides by -1 (-1 is equal to -x or -1x)

-x/-1=-9/-1

simplify

x=9

hope this helps :) have a nice day !!

2(x+5)=3x+1
2x+10=3x+1
2x-3x= 1-10
-x=1-10
-x=-9
x=9

What is the side lengths, in inches, of a cube with a volume of 1 1 cubic inch? Branliest

Answers

Answer:

34

Step-by-step explanation:

the order of pairs below follow a pattern

(0,2) , (1,3) , (2,4) , (3,5) , (4,6)

Answers

Answer:

i think it is the first one that is correct

i hope this helped

Step-by-step explanation:

The pattern is 1,1 is added each time

Pls help with the number 23

Answers

Answer:

90 miles.

Step-by-step explanation:

Knowing that an inch is equal to 40 miles you can take 40 and multiply it by 2 1/4, thus getting 90. Or, you can break it down. 2 times 40 equals 80. This leaves 1/4 inch left to figure out. If you divide 40 by 4 (figuring out a fourth) you would get 10. Add 80 and 10 and you would have 90 miles.

Answer:

I think it will be 90

Step-by-step explanation:

Write the decimal equivalent of 35/99

Question 6 options:

A. There is no decimal equivalent


B. 0.3535


C. 0.3535....


D. 0.35

Answers


0.3535
Sorry if I’m wrong

The students in Ms. Hill’s class are reading a 325-page book. There are about 90,000 words in the book.
Ms. Hill said the students should try for a reading rate of 200 words per minute for greatest comprehension.

The students in Ms. Hill’s class are reading a 325-page book. There are about 90,000 words in the book.
Ms. Hill said the students should try for a reading rate of 200 words per minute for greatest comprehension.

Jamie read 81 pages of the book in 2 hours.



The students in Ms. Hill’s class are reading a 325-page book. There are about 90,000 words in the book.
Ms. Hill said the students should try for a reading rate of 200 words per minute for the greatest comprehension.

Molly read 65 pages of the book in 80 minutes.



The students in Ms. Hill’s class are reading a 325-page book. There are about 90,000 words in the book.
Ms. Hill said the students should try for a reading rate of 200 words per minute for greatest comprehension.

Edgar read 72 pages of the book in 95 minutes.



The students in Ms. Hill’s class are reading a 325-page book. There are about 90,000 words in the book.
Ms. Hill said the students should try for a reading rate of 200 words per minute for greatest comprehension.

Tyrone read 89 pages of the book in 2 hours and 10 minutes.

Answers

Answer:

Whats the question tho

Step-by-step explanation:

:)

PLZ PLZ ANSWER THIS !!!!!!!!!!!!!!!

Answers

Answer:

7 units horizontal

Step-by-step explanation:

plz mark me as brainliest

Plssss helppppp and thanks you if answers are actually true then I give brain:)

Answers

the 3rd one and the last one.

Picture down there Thanksssss

Answers

im pretty sure there is 145 students
I am sure there is probably 145 students

could someone help me?​

Answers

Answer:

a) the general trend of the graph is upwards or a higher slope or whatever

b)5 because it is the center point of all data given

c)approx. 4.6 because when you add up current data and divide by amount of data you get 4.69230769231

d) the mean would be more affected because the median would still be 5 but the mean would change to 5.78571428571

Step-by-step explanation:

-the trend is hard to explain

-if you use your fingers and count to the canter you get 5

-add 1+2+3+4+4+5+5+5+6+6+6+7+7 to get 61 the divide by 13 or amount of data points

What they said I subtle checked it and they are right

What is the first step in evaluating the expression below?

12 + 6 − 4 ÷ (2 + 5)

A. Divide 4 by 2.
B. Add 2 and 5.
C. Add 12 and 6.
D. Subtract 4 from 6.

Answers

when doing expression like this u need to first do whatever is in the parenthesis, in this case u need to add 2 and 5
So you always have to use PEMDAS
PARENTHESES/EXPONENT/MULTIPLICATION/DIVISION/ ADDITION/SUBTRACTION. MAKE SURE YOU START IN ORDER

Adam has 7 cousins. The ages of all of the cousins, including Adam, are 17, 14, 18, 19, 6, 3, 6, and 12. What is the mean age of the cousins, rounded to the nearest tenth?

Answers

Answer:

11.9

Step-by-step explanation:

17+14+18+19+6+3+6+12=95

95/8=11.875

≈11.9

Please help me will mark brainliest!

Answers

When adding fractions all denominators must be the same. You multiple 2/3 by 4 so it becomes 8/12 and the same with the others. The answer is 19/12

Answer:

Leah's mistake was that she did not change the numerators

the correct value is 19/12

the Step-by-step explanation:

(2/3) + (1/2) + (5/12)

= (2*2/3*2) + (1*3/2*3) + (5/12)

= (4/6) + (3/6) + (5/12)

= (7/6) + (5/12)

= (7*2/6*2) + (5/12)

= (14/12) + (5/12)

= (19/12)

Solve for p.

5p−17=−2
help?
work is needed and steps maybe.

Answers

Answer: p = 3

Step-by-step explanation:

5p - 17 = -2

Add 17 to both sides

5p = 15

Divide both sides by 5

p = 3

Answer: p=3

Step-by-step explanation:

bc you move the -17 to the right side and it becomes +17 and 17-12 is 5

so 5p=5 and divide 5 both side so you get 3

PLEASE HELP NO TROLLS
Find the measure of angle A.

Answers

The measure of angle A is 61 degrees because every triangle is equal to 180 so you would add 80+39 and get 119. Then you would subtract that from 180 and get 61 which is the measure of angle A

Answer:°20

Step-by-step explanation:

Need help quick! Answer in picture.

Answers

Answer:

a) s1 is 4 km/h because it is given. t1 is 30 min. s2 is 8 km/h. d is 4 km because given

b) d2 is 2 km because he travels 30 min at 4 km/h which is 2 km

c) d2 is 2 km because he travels 30 min at 4 km/h which is 2 km and 4 km-2 km is 2 km

d) 2 km at 8 km/hour is 1/4 hour which is 15 minutes so t2 is 15 min.

e) 3:45+15 min is 4:00

Angie is working on a project for her history class. The first half of the project took her 7/12 of an hour. The second half of the project took her 13/18 of an hour.


What is the total amount of hours she spent working on the project?


Select one:

A. 1/18

B. 2/3

C. 1 1/9

D. 1 11/36

Answers

It would be C Because it is
The answer is D since 7+13 is and 12+18 is 36 and the least common denominator is 36 which equals 47/36 if you simplify it. The answer will be 1 11/36

The white chalk of a soccer field is 40% erased, how long is the chalk line?
a. 100m
b. 480m
c. 192m
d. 120m

Answers

Answer:

120m

Step-by-step explanation:

40% of x = 48

40/100*x= 48

x= 48*100/40

x = 120m

Rewrite 36 as a product of two square roots of perfect squares

Answers

Answer:

15.5

Step-by-step explanation:

How many days will it take a wild horse to travel 2,7002,700 miles if the horse travels 3030 miles a day? Use paper to show your work.

Answers

Answer:

8911.78217822

Step-by-step explanation:

27,002,700/3030=8911.78

can somebody please help me with number 2 and 5 its done today i will give brainliest

Answers

Answer:

2 the scale factor is 4

3 a (6,6) b (12,18) c (18,6)

4 a (1,1) b(2,3) c (3,1)

5 the scale factor is 2

Step-by-step explanation:

have a good day :)

Hep with all of them please -w-‘

Answers

The answer for 8a. is angle A!

A machine packs boxes at a constant rate of 2/3 of a box every 1/2 minute. What is the number of boxes per minute that the machine packs?
A 1/3
B 3/4
C 1 1/6
D 1 1/3

Answers

Answer:

I would say C. 1 1/6

Step-by-step explanation:

Answer: D (1 1/3

Step-by-step explanation:

if it’s 2/3 every half a minute then you do 2/3 times two, or you can just add two onto the numerator. that would give you 4/3 which simplifies to 1 1/3

Solve for x in the diagram below.

Answers

Answer:

X=157.5

Step-by-step explanation:

Not sure this is correct but, what i did was 365-45=315/2=15.7

I dearly hopes this helps you out...

X = 157.5 should be your answer

11/18 or 4/9

which is bigger

Answers

Answer:

4/9 bigger

Step-by-step explanation:

11/18 is bigger, because if you multiple both the numerator and denominator of 4/9, it equals 8/18, therefore 11/18 is bigger.

I NEED HELP ASAP!!! I CAN GIVE BRIANLIST!!!

Answers

Answer- 3
I just did a assignment with that and i got it right so it’s 3
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