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3 years ago

Simplify.If x=2, then what is 3x^2 - 2x + 1?

Mathematics

2 answers:

shtirl [24]3 years ago

5 0

Step-by-step explanation:

3(2)^2 - 2x + 1

=3x4 - 2x + 1

=12 - 2x + 1

= 13 - 2x

Answer: 13 - 2x

dybincka [34]3 years ago

4 0

Step-by-step explanation:

3x^2-2x+1

3(2)^2-2(2)+1

3(4)-4+1

12-4+1

8+1=9 Answer

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Express 6^1/4 b^3/4 c^1/4 using a radical

hodyreva [135]

Answer:

Step-by-step explanation:

$6^{\frac{1}{4} } b^{\frac{3}{4} }c^{\frac{1}{4} }\\\\=(6^1b^3c^1)^{\frac{1}{4} }\\\\=(6b^3c)^\frac{1}{4} \\\\=\sqrt[4]{6b^3c}$

so answer is B

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2 years ago

For a direct variation describe how the constant of variation affects whether y increases or decreases as x increases

Goryan [66]

Direct variation is of the form: y=kx (inverse variation is of the form y=k/x)

Assuming that k is positive :)

y increases as x increases and y decreases as x decreases. There is a direct ratio that is described by k. k=y/x.

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3 years ago

Find the x- and y-intercepts of the equation below. Write your answers as ordered pairs.

Airida [17]

Answer:

x intercept: none

y intercept=: (0,-12)

5 0

3 years ago

If you answered 37 problems correctly on a 42 question test, what percent would you recieve

OleMash [197]

The fraction would be 37 out of 42. You basically divide the two and get something around 88%.

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3 years ago

Is is square root of 1.6875 a rational number

mamaluj [8]

Question:

Is square root of 1.6875 a rational number ?

Answer:

Square root of 1.6875 a rational number is not a rational number

Solution:

Given that we have to find square root of 1.6875 and determine if it is rational number or not

Let us first find square root of 1.6875

$\sqrt{1.6875} = 1.29903810568$

Let us understand about rational number

A rational number is a number that can be expressed as a fraction (ratio) in the form $\frac{p}{q}$ where p and q are integers and q is not zero.

When a rational number fraction is divided to form a decimal value, it becomes a terminating or repeating decimal.

So the number 1.29903810568 is not a rational number

In other words we can say,

Only the square roots of square numbers are rational. Here 1.6875 is not a perfect square. So it is not rational number

4 0

3 years ago