All categories

2 years ago

2.1x-0.9y=15 simplify

1 answer:

max2010maxim [7]2 years ago

8 0

I don't understand
one way you could consider 'simplifying' is to make all numbers whole and simplest form

I will put it into stardard form which is ax+by=c

make all numbers whole
2.1x-0.9y=15
multiply everybody by 10
21x-9y=150
divide everybody by 3
7x-3y=50

You might be interested in

From a point on a river, two boats are driven in opposite directions, one at 7 miles per hour and the other at 11 miles per hour

Bogdan [553]

Answer:

Both boats will be 54 miles apart after 3 hours.

Step-by-step explanation:

Given that from a point on a river, two boats are driven in opposite directions, one at 7 miles per hour and the other at 11 miles per hour, to determine how many hours they will be 54 miles apart, the following calculation must be performed :

54 / (11 + 7) = X

54/18 = X

3 = X

Therefore, both boats will be 54 miles apart after 3 hours.

4 0

3 years ago

The length of one side of a triangular lot is 6 m less than 3 times the length of the second side. The third side is 8 m longer

Tanya [424]

second side = x

first side = 3x - 6

third side = (3x - 6) + 8

The perimeter = 80m and is equal x + (3x - 6) + [(3x - 6) + 8]

x + 3x - 6 + 3x - 6 + 8 = 80

7x - 4 = 80 |+4

7x = 84 |:7

x = 12 m

3x - 6 = 3(12) - 6 = 30 m

(3x - 6) + 8 = 3x + 2 = 3(12) + 2 = 38 m

Answer: 12m, 30m, 38m

8 0

3 years ago

If you just write whatever just for the points i will report you.

Hoochie [10]

Answer:

Below!

Step-by-step explanation:

The best way to answer this question is to read the statement carefully.

=> Five less than twice a number = 2x - 5
=> Five times the sum of two numbers = 5(x + y)
=> The difference of 5 and a number, squared = (5 - x)²

Hoped this helped.

$BrainiacUser1357$

5 0

2 years ago

Read 2 more answers

Epic math question that i cant solve

zvonat [6]

The area of the shaded region can be found by subtracting the area of the inside rectangle from the outside rectangle

area of outside: 6 X 10y —> 60y
area of inside: 3 X 5x —> 15x

so the area of the shaded region is 60y-15x

the GCF is 15, so the factored form is: 15(4y-x)

8 0

2 years ago

Solve for X and y 60° 14 3

lisov135 [29]

Answer:

X = 28

Y = 14

Step-by-step explanation:

+++++++++++++++++++++++++++++++++++++

4 0

2 years ago