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3 years ago

The system y = 2x + 3 and y = 2x − 1 has how many solutions

Mathematics

2 answers:

Vlada [557]3 years ago

5 0

It has no solutions. Two parallel lines never intersect.

julia-pushkina [17]3 years ago

5 0

Answer:

No solution.

Step-by-step explanation:

Because they both equal y, we can make them equal to each other.

2x + 3 = 2x - 1

If we were to subtract 2x on both sides, then we would be left with this.

3 ≠ -1

As you probably know, 3 is not the same as -1.

This means these systems have no solutions.

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julsineya [31]

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3 years ago

3x+10=43 what is x to the what are the steps to equal X to the math equation

juin [17]

Answer:

x = 11

Step-by-step explanation:

When solving for x, you want to get the variable by itself on one side of the equation. The first step is to subtract 10 from both sides. 43-10=33. So, it should look like:

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3 years ago

What is the expression obtained when the sum of 2a−16abc−45 and 2a+7abc+11 is subtracted from 6a+6abc−30?

kow [346]

Answer:

$2a+15abc+4$

Step-by-step explanation:

$(2a-16abc-45)+(2a+7abc+11)$

$\implies 2a-16abc-45+2a+7abc+11$

collect and combine like terms:

$\implies 4a-9abc-34$

$(6a+6abc-30)-(4a-9abc-34)$

Apply the distributive law $-\left(a-b\right)=-a+b$ :

$\implies 6a+6abc-30-4a+9abc+34$

collect and combine like terms:

$\implies 2a+15abc+4$

7 0

2 years ago

Please help, what is the measurement of BC?

notsponge [240]

Step-by-step explanation:

Sin(angle) = Opp/Hyp

Sin44 = 10/BC

0.6947 = 10/BC

Cross multiply

BC 0.6947 = 10

Divide both side by 0.6947

BC = 14.39

5 0

3 years ago