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4 years ago

Select the best answer for the question. 1. Simplify 4 + (−3) − 2 × (−6) A. −11 B. 12 C. −10 D. 13

Mathematics

1 answer:

LiRa [457]4 years ago

4 0

<span>The answer for:
4 + (−3) − 2 × (−6), once simplified is:
D.13

Hope this helps :)

</span>

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25. Bill bought a shirt for $35.80 plus he paid an additional 7% in sales tax. What was the final cost.

Vaselesa [24]

Answer: $38.66

You find the amount that is taxed by multiplying 0.08 by $35.80 which is $2.86 and adding that to the original amount.

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4 years ago

A facilities manager at a university reads in a research report that the mean amount of time spent in the shower by an adult is

Zolol [24]

Answer:

A) Null Hypothesis;H0: μ = 5

Alternative Hypothesis;Ha: μ ≠ 5

B) test statistic = -2.1226

C) p-value = 0.0598

D) Option A is correct

Step-by-step explanation:

We are given;

x = 4.52 minutes

s = 0.75 minutes

μ = 5 minutes

n = 11

degree of freedom = n - 1 = 11 - 1 = 10

A) The hypotheses are;

Null Hypothesis;H0: μ = 5

Alternative Hypothesis;Ha: μ ≠ 5

B) t-statistic = (x - μ)/(s/√n)

(4.52 - 5)/(0.75/√11) = -2.1226

C) From the t-score calculator results attached, the p-value is approximately 0.0598.

D) The P-value of 0.0598 is is greater than the significance level of 0.01, thus we fail to reject the null hypothesis, and we say that the result is statistically nonsignificant. So option A is correct.

3 0

4 years ago

FIND THE GCF, THEN FACTOR THE EXPRESSIONS

RSB [31]

Answer:

For number 1, it's 3(x^2+1)

Step-by-step explanation:

Step 1: Identify the GCF of the polynomial.

Step 2: Divide the GCF out of every term of the polynomial.

4 0

3 years ago

for p(x)= 192 + 21x^3 + 54x^2 - 3x^4 - 264x, use synthetic substitution to evaluate p(1), p(-2), and p(8)

RSB [31]

The value of p(1), p(-2), and p(8) is 0, 744 and 0 respectively

<h3>What is polynomial function?</h3>

Given the function $p(x)= 192 + 21x^3 + 54x^2 - 3x^4 - 264x$

We are to get the following parameters:

$p(1)= 192 + 21(1)^3 + 54(1)^2 - 3(1)^4 - 264(1)\\p(1)=192+21+54-3-264\\p(1)=0$

For p(-2)

$p(-2)= 192 + 21(-2)^3 + 54(-2)^2 - 3(-2)^4 - 264(-2)\\p(-2)=192-168+216-24+528\\p(-2)=744$

For p(8)

$p(8)=192 + 21(8)^3 + 54(8)^2 - 3(8)^4 - 264(8)\\p(8)=192+10,752+3,456-12,288-2,112\\p(-2)=0$

Hence the value of p(1), p(-2), and p(8) is 0, 744 and 0 respectively

Learn more on polynomials here: brainly.com/question/4142886

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3 years ago

What is "twenty-six thousandths" in decimal form?

aniked [119]

Answer:

twenty-six thousandths in decimal form is "0.0026"

Hope this helped

Step-by-step explanation:

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4 years ago