A train, initially moving at 12 m/s, speeds up to
36 m/s in 120 s. What is its acceleration?​

Answers

Answer 1

Answer:

Acceleration is 35,9. I think so

Step-by-step explanation:

v0=12m/s

v=36m/s

t=120s

a=?

a=v–v0/t,

a=36 - [tex]\frac{12}{120}[/tex]

a=36-0,1

a=35,9


Related Questions

pls hurry!! im being timed

Answers

Answer: $539

Step-by-step explanation:

Solve the equation to determine that the highest y value you can get is 539 with an x value of 18

PLS HELP ME IM AWARDING BRAINLIEST!

Answers

Answer:

First option: 336

Step-by-step explanation:

To find the answer, separately solve for each of the shapes.

1. The base is the square so length times width is the formula:

12 x 12 = 144

144 is the area of the square

Next, find the 4 triangles which are congruent(the same).

Triangle area formula: Base x Height divided by 2.

So, the area of 1 triangle is 12 x 8 =96

96/2 = 48

Area =48

Because there are 4 triangles, do 48 x 4=192.

Finally, add the area together and you should get 192+144 =336 ft^2

Surface area = 336 ft^2

Ughhhhh Its Mondayyyyyyyy soooooo free point question whats 3x+-7=93

Answers

Answer:

3X-7=93,=3x=86=x=28.67

Step-by-step explanation:

Answer:

100000000000

Step-by-step explanation:

i need your guys help i don’t know nun abt this at all

Answers

Answer:

1) 2² + 5² = ?²

2) 6² + ?² = 9²

3) 8² + 16² = ?²

4) 8² + ?² = 10²

Step-by-step explanation:

Because these are all right triangles, we can use the Pythagorean Theorem:

a² + b² = c²

Where c is the hypotenuse, the longest side of the triangle. It can be identified as being across from the right angle of the right triangle.

The legs are the two other sides of the triangle and they are interchangeable when placed in the Pythagorean Theorem.

PLEASE HELP IM BEGGING YOU!!! Team Integrity kids were supposed to go on a field trip to an ice rink. The cost was $12 per student for tickets, and $10 per student for food. The team paid $50 for buses. Write an expression to represent the total cost of this field trip for the entire team. Identify what your variable represents. *

Answers

(12+10)s+50= t
S=students
T= total

By solving the inequality 4.5a < 18, the answer will be
A. a<10

B. a<8

C. a<11

D. a<4

Answers

Answer: D plz mark me brainliest (tap the crown on the bottom right of an answer)

Step-by-step explanation: it has to be D because it can't be larger then 4

The inequality by solving the given equation of 4.5a < 18 will be a<4 . Then the correct option will be (D).

What is inequality?

A difference between two values indicates whether one is smaller, larger, or otherwise not identical to the other.

Equations are not always balanced on both sides by using equal symbols in mathematics. Sometimes it can be about something like a not equal relationship, meaning that something is preferable to or lower than the next.

In another word, inequality is mean that if a number is not equal to the other number then it will be unequal and the constraint of this will make an inequality.

Given that

⇒ 4.5a < 18

⇒ a < 18/4.5

⇒ a<4  hence, the correct option is a <4.

For more information about the inequality

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4. The length of a rectangle is represented by 8x-3. The width of the
rectangle is represented by 2x. The perimeter is 34 centimeters. Which
equations represent the perimeter? Choose all the correct answers.
A. 4(2x+8x-3)=34
B. 2(2x)+2(8x-3)=34
C. 2x+8X-3+2x+8x-3=34
D. 20x-6=34
E. 2x(8x-3)=34

I NEED THIS ASAP!!!!!

Answers

Answer:

B, C, & D

Step-by-step explanation:

Claire's backyard is in the shape of a rectangle and has a length of 19.5 feet. It cost her $945 to fence in the yard. If fencing costs $15 per foot, what is the width of Claire's backyard?

Answers

Answer:

Step-by-step explanation:

You need to know the formula for the perimeter of a rectangle. We won't use it right away, but it is pertinent information.

P = 2 ( l + w )

Now, we know that the fencing costs $15.00 per foot, and that the length is 19.50 feet.

We first need to find the price of one "length" side of the fence.

To do this, multiply 19.50 by 15.00

19.50 x 15.00 = 292.5

Next, we look at the perimeter equation to see what we can plug in where.

P = 2 ( l + w )

We can put in the total price of the fencing for the yard as P, and the amount of one length side of the fence as l.

945.00 = 2 ( 292.5 + w )

And now, we simply solve for w.

945.00 ÷ 2 = ( 2 ( 292.5 + w ) ) ÷ 2

472.5 = 292.5 + w

472.5 - 292.5 = 292.5 + w - 292.5

w = 180

It costs $180 for one "width" side of the fence.

To find out how many feet that is, we do the opposite of what we did with the length. Instead of multiplying by $15.00, we divide by $15.00

$180.00 ÷ $15.00 = 12

The width of Claire's backyard is 12 feet.

Fill in the missing spot with the correct fraction.

Answers

Answer:

a. [tex]\frac{5}{18}[/tex] b. [tex]\frac{1}{24}[/tex]

Step-by-step explanation:

14 + w is the same as which expression?

A
14w
B
14-W
С
W + 14
D
W - 14

Answers

Answer:

I think it's w + 14? :3

AND I THOUGHT I SAW A KUNIMI PFP-

Step-by-step explanation:

:3

The Jayden family eats at a restaurant that is having a 15% discount promotion. Their meal costs $78.48 before the discount, and they leave a 20% tip. If the tip applies to the cost of the meal before the discount, what is the total cost of the meal? Round your intermediate calculations and answer to the nearest cent.
how much does the meal cost?

Answers

Answer:

Step-by-step explanation:

c=t+p

c=0.2(78.84)+(1-0.15)(78.84)

c=0.2(78.84)+0.85(78.84)

c=15.768+67.015

c=15.77+67.02

c=$82.79

Which method would be the best (quickest) for solving the system?
6x + 4y = -10
-6x + 5y = 1
Substitution
Elimination

Answers

Answer:

elimination.

Step-by-step explanation:

6x-6x eliminates and then you just have to simplify the expression. then plug whatever you got for y into one of the expressions and then you have an answer.

a sum of money was divided between two friends, karen and Natasha in the ratio 2:5. If Natasha received $120 more than karen, find the sum of money shared​

Answers

Answer:

$600

Step-by-step explanation:

Let x be the total amount divided

Karen gets (2/7) x

Natasha gets  (5/7) x

(5/7) x  = (2/7) x + 210

Multiply both sides by 7

5x = 2x + 1470

3x = 1470

x = 490

Natasha gets (5/7) (490) = 350

Karen gets (2/7)(490) = 140

The difference in ration is 5 - 3 = 2. So divide 150 by 2 to get the amount for each part of the ratio which is 75. the total ration is 3 + 5 = 8. So to get the total original sum of money, multiply 75 and 8 which is $600. for each person just multiply 75 with their respective ratios. For A: 75 X 3 = $225. For B: 75 x 5= $375. To check that it is correct add 225 and 375, and you should get 600.

according to my calculations, the starting amount will be 600

Answer:

$280

Step-by-step explanation:

Ratio = 2 : 5

Karen's Share = 2x

Natasha's share = 5x

Natasha received $120 more than karen.

5x = 2x + 120

5x - 2x = 120

      3x = 120

        x = 120/3

x = 40

Karen's share = 2*40 = $ 80

Natasha's share = 5*40 = $ 200

Sum of money = 80 +200 = $ 280

ppppppplllllzzzzzzzzzz huuuuuuurrrrrryyyyyyyyyyyy What is missing from the frequency chart below?



A. the tallies are missing
B. the title is missing
C. the total is missing
D. there is nothing missing

Answers

Answer: A

Step-by-step explanation:

A

I think, i looked it up, im sorry if im wrong. I tried.

Answer:

A

Step-by-step explanation:

PLEASE HELP ME!!
5% of the tickets were reserved seats that sold for $35 each. What was the total amount in sales for the $35 tickets?

Answers

It’s 1.75$ why because all you looking for is the 5% of 35 which is 1.75 so that means the ticket was sold for 1.75$

Out of 10 students, 6 have a dog. Based on these results, how many students would have a dog out of 90 students?

Answers

54 students have a dog

Answer:

54 students would have a dog.

Step-by-step explanation:

If 6 out of 10 students have a dog, then multiplying 10 by 9 and 6 by 9 you will get 90 students having a dog.

15. Circle all of the expressions equivalent to 9x - y.
A (3x2 - y)
B. (3x)2-0)
C 9(x2)-6)
D. (932) 2-6)
E. (3x2 + y)(3x2-y)

Answers

Answer:

I believe a is One of them

The volume of the square pyramid is ___ cubic centimeters.

Answers

Answer:

The volume of the square pyramid is 1,125 cubic centimeters

Step-by-step explanation:

From the diagram in the question, we have;

The height of the pyramid, h = 8 cm

The side length of the square base of the pyramid = 15 cm

The area of the square base of the pyramid, A = 15 cm × 15 cm = 225 cm²

The volume of a pyramid = 1/3 × A × h

Where;

A = The base area of the pyramid

h = The height of the pyramid

Therefore, the volume of the square pyramid, V = 1/3 × A × h

∴ V = 1/3 × 225 cm² × 15 cm = 1,125 cm³

The volume of the square pyramid, V = 1,125 cm³

Someone help me, for a grade.

Answers

Answer:

The answer is D

Step-by-step explanation:

When finding volume you multiply three things length, width, and height.

Subtract 2.2 and 41.5

Answers

Answer:

if you're doing 2.2 - 41.5 your answer is - 39.3

if you're doing 41.5 - 2.2 your answer is 39.3

Step-by-step explanation:

A 60$ purse is on sale for 10% give the sell price

Answers

Answer:$54

Step-by-step explanation:

60(0.9) = $54

answer:

$54

step-by-step explanation:

sale means a decrease from the original amountsince there is a sale of 10%, we would multiply by 90% since we are trying to find the sale price

60 X 90% - - > 60 X 0.90

you can convert 90% into 0.90 so it is easier to multiply

60 X 0.90 = 54

= $54


The answer for this question is C

Answers

Answer:

yes good job :))

Step-by-step explanation:

* please mark brainliest *

1. Ryan is washing windows on a skyscraper. He lowers himself six times,
going down an equal distance each time. In all, Ryan lowers himself 48 ft.
What integer represents the change in Ryan's position each time he lowers
himself? *

Answers

Answer:

Ryan went down a total of 8 times

Step-by-step explanation:

He goes down 6 times 48/6 = 8

peter combines 160 grams of half-and-half containing 20% fat and 50 grams of milk. He makes a creamer that is 20% fat.

Suppose the milk contains x% fat. how many grams of fat are in the 50 grams of milk?

Answers

Answer:Much like heavy cream, half-and-half is a dairy product. It's made by combining equal parts cream and whole milk, resulting in a product that's thinner and lower in fat than heavy cream.

Given that creamer is 20% fat. If he made creamer using 160 gr of half-half and 50 gr of milk and creamer turned out to be 20% fat, it would make sense that 50 gr of milk contains 0% of fat. This question one is missing some key info.

In the diagram, QR=ST=480, CU=5x, and CV=9x-56. Find the radius of circle C

Answers

Answer:

your answer will be option C. 250

Step-by-step explanation:

hope it helps you

have a great day

Find the measure of the angle indicated... please help

Answers

Answer:

Step-by-step explanation:

41). Measure of an external angle of a triangle is equal to the sum of teh opposite two angles.

140° = (13x + 9)° + (5x + 5)°

140 = 18x + 14

18x = 140 - 14

18x = 126

x = 7

m∠R = (13x + 9)

        = 13×7 + 9

        = 100°

42). m∠DCA = m∠E + m∠D

126° = (6x + 2)° + (5x + 3)°

126 = 11x + 5

11x = 126 - 5

11x = 121

x = 11

m∠D = (5x + 3)

         = 5(11) + 3

         = 58°

43). m∠DPQ = m∠Q + m∠R

11x + 3 = 70° + (x + 13)°

11x + 3 = x + 83

11x - x = 83 - 3

10x = 80

x = 8

m∠R = (x + 13)

        = 21°      

44). m∠QST = m∠T + m∠U

13 + 13x = 100 + (3x + 3)

13 + 13x = 3x + 103

13x - 3x = 103 - 13

10x = 90

x = 9

m∠U = 3x + 3

        = 3(9) + 3

        = 27 + 3

        = 30°

What are the missing terms in the equation (__+7)+(2x-6)=-4x+1

Answers

the blank is -6x because -6 + 2 equals -4 min which is on the other side of the equation.

The missing terms in the equation  (__ + 7) + (2x - 6) = - 4x + 1 is - 6x.

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, An equation (__ + 7) + (2x - 6) = - 4x + 1.

Simplifying the LHS we have,

__ + 7 + 2x - 6.

__ 2x + 1.

Now, The difference between 2x and - 4x is - 6x.

Therefore, The complete equation where LHS = RHS would be,

(- 6x + 7) + (2x - 6) = - 4x = 1.

learn more about numerical expressions here :

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Miss Lim bought some puzzles for her pupils in the Maths Club. She bought a total
of 40 Tangram puzzles and IQ puzzles. She paid a total of $128. Each Tangram
puzzle cost $4 and each IQ puzzle cost $2. How many Tangram puzzles did she buy?​

Answers

Answer:

She bought 24 Tangram puzzles

Step-by-step explanation:

Let the number of Tangram puzzles be t and the number of IQ puzzles be i

The sum of all the puzzles is 40;

i + t = 40 ••••••(i)

Cost of all Tangram puzzles at a cost of $4 per one will be;

4 * t = $4t

cost of all Iq puzzles at a cost of $2 per one is

2 * i = $2i

Sum

paid for all is $128

so;

4t + 2i = 128 •••••••(ii)

From equation i;

i = 40-t

Substitute into ii

4t + 2(40-t) = 128

4t + 80 - 2t = 128

2t = 128-80

2t = 48

t = 48/2

t = 24

(I need help ) the graph shows the relationship between the
number of cubic yards of soil ordered and the
total cost of the soil delivered.

Answers

Answer:

80/320

Step-by-step explanation:

answer is given

Someone please help me quick I've been stuck on this problem for 2 hours and my assignment is due at 10:30pm.

A writing job requires the following lengths of BX cable:

12 pieces 8 1/2 ft long
7 pieces 18 1/2 ft long
24 pieces 1 3/4 ft long
12 pieces 6 1/2 ft long
2 pieces 34 1/4 ft long

How much cable is needs to complete the job?

please answer step-by-step please, thank you​

Answers

Answer:

419.5 ft of BX cable

step-by-step explanation:

12x8.5ft= 102 ft

7x18.5 ft= 129.5ft

24x 1.75ft= 42ft

12x 6.5ft=78 ft

2x 34.25= 68.5ft

Add all the answers and you get 419.5 ft

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