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german
3 years ago
15

Larry looked at the clock. It was 9:45 p.m. The bus for his class trip leaves at 8:30 am. How many hours and minutes are there u

ntil the bus leaves? ​
Mathematics
2 answers:
slavikrds [6]3 years ago
8 0

Answer:

In between the 10pm to 8 am =10 hours

In between the gap of 9:45 to 10 pm =15 min left

In between 8 and 8:30 am =30 min left

So 10hr and 45 min is the answer

Mademuasel [1]3 years ago
7 0

Answer:

There are 10 hours and 45 minutes until the bus leaves.

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Resuelve el siguiente sistemas de ecuaciones por el método
marishachu [46]

Answer:

x=10 and y=12

Step-by-step explanation:

To solve this quadratic equation we will use two method

1. Elimination method

2. substitution method

first of we use elimination method

we either eliminate x or y

we will be eliminating y

83x-20y=590..........(eq1)

60x+18y=816...........(eq2)

y will be eliminated by multiplying

(eq1) by 9

(eq2) by 10

which will give

747x-180y=5310.........(eq3)

600x-180y=8160.........(eq4)

see that y has the same value that is (-180y and +180y)

so to eliminate y completely you have to add eq1 and eq2 because if you don't add them together you wont eliminate y

747x-180y=5310

+

600x+180y=8160

=

1347x+0=13470

1347x=13470

x=13470/1347

x=10

Now to find y we use substitution method ie put x=10 in any of the equation above(eq1,eq2,eq3, eq4) you will get the same answer

eq1

83x-20y=590..... where (x=10)

83(10)-20y =590

830-20y=590

like terms

-20y=590-830

-20y= -240

divide both sides with -20

y= -240/-20

y=12

OR

eq2

60x+18y=816..... where x=10

60(10)+18y=816

600+18y=816

like term

18y=816-600

18y=216

y=216/18

y= 12

or eq3 or eq4 you will still get the same answer......

7 0
3 years ago
Pls help i only have 4 pls and ty
solniwko [45]

Answer:

y= -1x+1

Step-by-step explanation:

8 0
2 years ago
I don’t understand please help
kow [346]
The anwser to this is 6.1
7 0
2 years ago
Hi! Just need help with the problem below, tysm!
Fynjy0 [20]

"Definition of direct variation. 1 : mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other."

The answer is D

All of the other relationships are consistent.

A is x × 3

B is x × 4

C is x × 2

D is x × 2 then 3 then 4.

D is not a direct variation.

Let me know if you have questions about my answer! :)

5 0
3 years ago
1. find the surface area of the cylinder to the nearest tenth of a square unit.
Tamiku [17]
1. 395.8

2. 52

I’m not 100 percent sure but I’m sure it’s right
7 0
3 years ago
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