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Ann [662]
3 years ago
8

Cómo resuelvo estás ecuaciones6×-5y=-33×+2y=12​

Mathematics
1 answer:
jeka57 [31]3 years ago
5 0

Answer:

Y vale 3 x vale 2 ponme

Step-by-step explanation:

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Find the number that is 2/3 of the way from 3/4 to 3 5/12
IRINA_888 [86]

Answer:

I got 2.527. And the 7 repeats I’m wasn’t sure if you wanted it in a fraction but it shouldn’t be difficult to convert if you have a calculator with that function

Step-by-step explanation:

3 0
2 years ago
A radio controlled car travels 27 km and 28.5 minutes what is the speed of the car​
olya-2409 [2.1K]

Answer:

56.842 km/hr

0.947 km / min

15.789 m/s

Step-by-step explanation:

speed = distance / time

let's assume your teacher wants it in km/ hr

28.5 minutes = ? hours

60 minutes = 1 hour

we can multiply both sides of 60 minutes = 1 hour by 28.5/60 to get 28.5 minutes = 28.5/60 hours

distance = 27 km

27 km / (28.5/60) hours = 56.842 km/hr

in km / minute

27 km / 28.5 minutes = 0.947 km / min

in meters/second:

1 minute = 60 seconds

28.5 minutes = ? seconds

we can multiply both sides of the first equation by 28.5 to get

28.5 minutes = 1710 seconds

27 km = ? meters

1 km = 1000 meters

we can multiply both sides of the second equation by 27 to get

27km = 27000 meters

27000 meters / 1710 seconds = 15.789 m/s

3 0
2 years ago
Solve the inequality 3x^2 + 10x - 8 < 0​
Ksivusya [100]

Step-by-step explanation:

Given, 3x−2<2x+1

⇒3x−2x<1+2

⇒x<3orx∈(−∞,3)

The lines y=3x−2 and y=2x+1 both will intersect at x=3

Clearly, the dark line shows the solution of 3x−2<2x+1.

8 0
2 years ago
The expression [(-7) ³ - (-7³)] - [(-7) ² + 7²] results in
Reil [10]
[(-7)(-7)(-7) + (-7)(-7)(-7)] - [(-7)(-7) + (7)(7)] 
(-343 + -343) - (49 + 49)
-686 - 98 = -784
The answer is a) -784 :)
4 0
3 years ago
Read 2 more answers
A scooter is priced between $1,000 and $ 2,000. Its price is a multiple of 10. All of the digits in the price, except for the th
snow_tiger [21]

Let us first break down the question given the information stated.

The question tells us that all of the digits in the price, except for the thousand digit, are even numbers, and that the scooter is priced between $1, 000 and $2, 000.

Effectively, this means that:

a) it must cost more than $1, 000 but less than $2, 000

b) the second, third and fourth digits are even (0, 2, 4, 6 or 8)

We also know that the price is a multiple of 10, thus we can modify b) from above and say that:

b) the second and third digits are even (0, 2, 4, 6 or 8)

c) the fourth digit is 0 (since the price must be divisible by 10)

Furthermore, we are told that the value of the hundreds digit is 30 times the value of the tens digit.

Now, this is where we need to remember that the second (ie. hundreds) and third (ie. tens) digits must be even and multiples of 10. Thus, we must do a little trial and error to find two values that fit these constraints, with x representing the tens value and y representing the hundreds value. We will start with x = 20 (we cannot start with x = 0 since the price would then be $1, 000, and we cannot start with x = 10, since the digit in the tens place would be a 1, which is odd, not even):

(1) if x = 20: y = 30*20 = 600

6 is an even number, which fits the constraint of the problem.

Thus, the tens digit is 2 and the hundreds digit is 6.

Given this information and that which we defined at the very beginning, we can now see that the price of the scooter is $1, 620.

I hope this does help you, however if you have any further questions or feel that I may have misinterpreted something (I personally found 'The value of the hundreds digit is 30 times the value of the tens digit' to be a little poorly defined), please feel free to comment below :)

4 0
3 years ago
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