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3 years ago

PLEASE HELP TIMED

Mathematics

2 answers:

Nostrana [21]3 years ago

8 0

Answer:

D. x^6 - x + √6

Step-by-step explanation:

First let's see what a trinomial is.

A trinomial is a polynomial consists of three terms. The polynomial will not contain the fraction and negative exponents. The exponent/power of variable must be a whole number.

Now let's check out the options.

A. x^3 + x^2 - $\sqrt{x}$

It has three terms but in the last term we have √x which is x^1/2. Since the exponent is 1/2 it is not a polynomial.

B. 2x^3 - x^2, which has only two terms. This is not a trinomial.

C. 4x^3 + x^2 -1/x, this can be written as 4x^3 + x^2 - x^-1, here the last term's exponent is -1. Therefore, this is not a polynomial.

D. x^6 - x + √6

This is a trinomial.

vivado [14]3 years ago

4 0

A trinomial is a polynomial with 3 terms.

but it doen'y include terms whiich have division by a variable.
so these 2 statements disallow B and C

I don't think A is a polynomial

D is the correct choice.

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Diagram shows a cone and its axis of rotation which type of cross-section is formed when the cone is intersected by a plane cont

MAXImum [283]

Answer:

The cross section will be an isosceles triangle

Step-by-step explanation:

The picture of the question in the attached figure N 1

we know that

If a plane passes through the axis of rotation of the cone, then the resultant cross-section will be a triangle with one vertex as the vertex of the cone and the two sides of the triangle through the vertex A will be equal.

Where the base of the triangle will be equal to the diameter of the circular base of cone and the two congruent sides of triangle will be equal to the slant height of the cone

therefore

The cross section will be an isosceles triangle

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3 years ago

Simplify square root of 1008 ( V` Represents the square root sign.)

Alexus [3.1K]

So first factor it
1008=2*2*2*2*3*3*7
group them in similar pairs
1008=(2*2)(2*2)(3*3)*7
now remember we can do
$\sqrt{xy}= \sqrt{x} \sqrt{y}$ so
$\sqrt{1008}= (\sqrt{2*2}) (\sqrt{2*2}) (\sqrt{3*3}) (\sqrt{7})$ =
2*2*3* $\sqrt{7}$ =
12√7

the answer is B

5 0

3 years ago

when adding two rational numbers tell what the sign of the sum will be if one rational number is positive and one is negative

Mekhanik [1.2K]

Answer:

True

When you add two negative numbers the sum is always negative ex.

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Step-by-step explanation:

8 0

2 years ago

Ksju [112]

Answer:

We conclude that the mean contents of cola bottles is more than or equal to the advertised 300 ml.

Step-by-step explanation:

We are given that Bottles of a popular cola drink are supposed to contain 300 ml of cola. The distribution of the contents is normal with standard deviation of 3 ml.

A student who suspects that the bottler is under-filling measures the contents of six bottles. The results are: 299.4, 297.7, 301.0, 298.9, 300.2, 297.0

Let $\mu$ = mean contents of cola bottles.

SO, Null Hypothesis, $H_0$ : $\mu \geq$ 300 ml {means that the mean contents of cola bottles is more than or equal to the advertised 300 ml}

Alternate Hypothesis, $H_A$ : $\mu$ < 300 ml {means that the mean contents of cola bottles is less than the advertised 300 ml}

The test statistics that will be used here is One-sample z test statistics as we know about the population standard deviation;

T.S. = $\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

where, $\bar X$ = sample mean contents of cola bottle = $\frac{\sum X}{n}$ = 299.03 ml

$\sigma$ = population standard deviation = 3 ml

n = sample of bottles = 6

So, test statistics = $\frac{299.03-300}{\frac{3}{\sqrt{6} } }$

= -0.792

Now at 5% significance level, the z table gives critical value of -1.6449 for left-tailed test. Since our test statistics is more than the critical value of z as -0.792 > -1.6449, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which we fail to reject our null hypothesis.

Therefore, we conclude that the mean contents of cola bottles is more than or equal to the advertised 300 ml.

8 0

3 years ago

Exam Guidelines

pashok25 [27]

Answer:

Answer is B. Y=31

Step-by-step explanation:

4y + 228 = 352

(4)(y) = 352 -228

y = 124/4

y = 31

4 0

2 years ago

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