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3 years ago

-3.8x = -7.4 Is x=2 is a solution

Mathematics

1 answer:

Lana71 [14]3 years ago

6 0

No

The anser is x= -11,2

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2 years ago

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Which order pair is the solution of the system of equations shown?ITS DUE TONIGHT HELP

kap26 [50]

Answer:

Step-by-step explanation:

-x + 5 = 5x - 6

-6x + 5 = -6

-6x = -11

6x = 11

x = 11/6

-11/6 + 30/6= 19/6

(11/6, 19/6)

answer is C

6 0

3 years ago

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hjlf

4x - 3y + 20 = 0....4x - 3y = -21

4x - 3y = -21.....multiply by -2
5x - 6y = -25
----------------
-8x + 6y = 42 (result of multiplying by -2)
5x - 6y = -25
---------------add
-3x = 17
x = -17/3

this system of equations has 1 solution

4 0

3 years ago

How would you graph 2x > 6 on a number line?

elena55 [62]

Hope its understandable

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3 years ago

Kyra has a rock collection. When she puts her rocks into 2 equal plies, there are no rocks left over. When she puts her rocks in

Nat2105 [25]

Step-by-step explanation:

According to this description we need a number that can be divided by 2,3 and 4 since the amount of rocks can be described by a natural number. However if a number is divided by 4 it is divided by 2 as well since 2*2=4.

$\frac{x}{4} = \alpha \\ \frac{x}{2} = 2 \alpha$

If α is a natural number then 2*α is a natural number as well as the product of two natural numbers.

Which means that we need a number devided by 3 and 4.

The smallest number that fulfills this demand is 3*4=12.

Also any product of 12 with any natural number can be devided by 3, 4 and 2.

If the exercise asks for the numbers that are divided only by 2,3 and 4 these are:

${3}^{ \alpha } \times 12 \: and \: {4}^{ \alpha } \times 12 \: \\ where \: \alpha \: belongs \: to \: the \: set \: of \: all \: \\ natural \: numbers$

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3 years ago