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3 years ago

PLEASE HELP

Mathematics

1 answer:

grin007 [14]3 years ago

6 0

The answer should be 8 feet

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2x)(x2) + (2x)(x) + (2x)(-2) + (3)(x2) + (3)(x) + (3)(-2)

Valentin [98]

Answer:

6x^2+2x-6

Step-by-step explanation:

In the expression (2x)(x2)+(2x)(x)+(2x)(-2)+(3)(x2)+(3)(-2) take each set of two and solve those individually. The expression then becomes 4x^2+2x^2-4x+6x-6 the combining like terms you get 6x^2+2x-6.

6 0

3 years ago

What is the solution to the system of equations?

Mekhanik [1.2K]

Answer:

(-6, -2)

Step-by-step explanation:

When trying to find the solution to a system of equations on a graph, the solution is where the lines intersect.

The lines intersect at (-6, -2). This is the solution.

7 0

3 years ago

Read 2 more answers

I think this may be 29.8

Ronch [10]

Note that 1000 ml = 1 liter.

Thus,

0.298 ml 1 liter

--------------- * ------------------ = 0.000298 liter

1 1000 ml

3 0

4 years ago

Read 2 more answers

Solve the radical equation. square root 6n-11= n – 3 Which solution is extraneous? A.)2

Anvisha [2.4K]

ANSWER

D) 10

EXPLANATION

We want to solve the radical equation,

$\sqrt{6n - 11} = n - 3$

Square both sides,

$6n - 11 = (n - 3) ^{2}$

Expand brackets on right hand side,

$6n - 11 = {n}^{2} - 6n + 9$

Rewrite in general quadratic equation form,

${n}^{2} - 12n + 20 = 0$

Factor to obtain,

$(n - 2)(n - 10) = 0$

Apply the zero product principle to get,

$n = 2 \: or \: n = 10$

We put n=2 into the equation to get,

$\sqrt{6(2) - 11} = 2 - 3$

$1 = - 1$

This statement is false, hence 2 is an extraneous solution

We put n=10, to get

$\sqrt{6(10) - 11} = 10 - 3$

$\sqrt{49} = 7$

$7 = 7$

This is true, hence the only solution is
$n = 10$

3 0

4 years ago

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A group of friends spent 1, 0, 2, 3, 4, 3, 6, 1, 0, 1, 2, and 2 hours online last night. What are the 1st and 3rd quartiles for

charle [14.2K]

1 and 3 i just did the math tell me if i’m wrong

8 0

3 years ago