3 h 6 min 45 sec+8h 55 mins 20 sec

Answers

Answer 1
Answer:
   3 hours . . . 6 minutes . . . 45 seconds
+ 8 hours . . 55 minutes . . . 20 seconds
  ________________________________
 11 hours . . 61 minutes . . . 65 seconds

But 65 seconds = 1 minute . . . 5 seconds

 11 hours . . 62 minutes . . . 5 seconds

But 62 minutes = 1 hour . . . 2 minutes

 12 hours . . 2 minutes . . . 5 seconds


I think this is regrouping, but with 60s instead of 10s.



Answer 2
Answer: Convert them both to minutes to get: 186 mins and 45 sec + 535 mins and 20 sec

Add to get: 772 mins and 5 sec

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Geoffrey and his babysitter spent 20 minutes preparing dinner, 2 hours and 30 minutes playing board games, and half an hour making dessert. How many minutes did they spend doing these activities?
Erica earns a rebate each month on her meals and movie tickets. She earns $3 for each movie ticket and $0.80 for each meal. Last month Erica purchased 15 meals and earned $18.Part A: Create an equation that will determine the number of movie tickets she purchased. (3 points)Part B: Solve this equation justifying each step with an algebraic property of equality. (6 points)Part C: How many movie tickets did Erica purchase last month?
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It cost $35 for one adult and two children to attend a show.it cost $60 for two adults and three children to attend the same show.How much dose it cost one adult to attend the show?

Can someone help me?

Answers

Answer:

San Fransisco

Step-by-step explanation:

If Geneva is 12°C colder than her hometown, this means that her hometown is 12°C warmer than -3°C.

Since warmer means a higher number, we find 12 + -3, which is 9°C.

The town that is 9°C is San Fransisco.

The correct answer is B.

Hope this helps.

A cube has a surface area of 294 square cm. Find the length of one side.

Answers

Surface area of cube = 6s²

Where s is the length of the side of the cube.

6s² = 294

s² = 294/6

s² = 49

√s² = √49

s = 7

Length of one side = 7 cm.

I hope this helps.
A cube has a surface area of 294cm2 (294cm squared). What are the formulas to find both dimension and volume? Thank you!
SURFACE AREA OF CUBE = A = 6*S^2.......WHERE S= SIDE OF THE CUBE
VOLUME OF CUBE = V = S^3

6S^2=294 SQ.CM.
S^2=294/6 = 49 = 7*7
S=7
V = 7^3 = 343 CU.CM.


               --hope this helps.

Show that the value of the expression: ( 10+5 3 + 10−5 3 )2 is a rational number.

Answers

Answer:

The value of the expression is 400

Given the following system of equations: 2x + 6y = 12 4x + 3y = 15 Which action creates an equivalent system that will eliminate one variable when they are combined? Multiply the second equation by −2 to get −8x − 6y = −30. Multiply the first equation by 2 to get 4x + 12y = 24. Multiply the second equation by −4 to get −16x − 12y = −60. Multiply the first equation by −4 to get −8x − 24y = −48.

Answers

Answer:

Multiply the second equation by −2 to get −8x − 6y = −30.

Step-by-step explanation:

we have

----> first equation

----> second equation

Solve by elimination

Multiply the second equation by -2 both sides

---> equivalent second equation

Adds first equation and the equivalent second equation

Find the value of y

substitute the value of x in any of the equation

the solution of the system is the point (3,1)

Please help brainliest for best

Answers

Answer:

You can do something where someone locks one of your family members up and to find them they give you clues like the equation and once you get to them you have a lock combination

Step-by-step explanation:

Hope this helps!!

Answer:

You could do a maze and your family be in the middle.. solve equations on the way or do like a mystery room.. solve problems and clues to get out of the room

Step-by-step explanation:

Maybe this helps .. hopefully :)

How many centimeters are in 4.5 meters

Answers

There are 450 centimeters in 4.5 meters, next time try moving the decimal point over 2 places and adding a zero. 
1 cm= 0.01m \n\n 4.5m \to \boxed{450 cm}