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3 years ago

1) 2m + n; use m = 2, and n= 1 What’s the answer

Mathematics

1 answer:

Anastasy [175]3 years ago

5 0

Answer:

Step-by-step explanation:

2(2)+1

2*2 =4

4+1=5

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An item is priced at $13.75. If the sales tax is 7%, what does the item cost including sales tax?

Tems11 [23]

Answer:

divide 7/100 which is 0.07

multiply that by 13.75, and you get 0.96

13.75+0.96= $13.20

(this is including sales tax)

6 0

3 years ago

Read 2 more answers

y = c1 cos(3x) + c2 sin(3x) is a two-parameter family of solutions of the second-order DE y'' + 9y = 0. If possible, find a solu

Misha Larkins [42]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value is $y = 5sin3x$

Step-by-step explanation:

From the question we are told that

$y = c_1\ cos3x + c_2 \ sin 3x$

given that y(0) = 0

We have that

$c_1\ cos3(0) + c_2 \ sin 3(0) = 0$

=> $c_1 = 0$

This means that

$y = c_2 \ sin 3x$

We also given that

$y[\frac{\pi}{6} ] = 5$

$c_2 sin (3 * \frac{\pi}{6} ) = 5$

=> $c_2 = 5$

Hence

$y = 5sin3x$

6 0

3 years ago

A computer company has a special going in which all customers receive a free monitor and scanner with the purchase of a new comp

kipiarov [429]

Answer:

2160

Step-by-step explanation:

Given : At a computer store, a customer is considering 10 different computers, 6 different monitors, 9 different printers and 4 different scanners. We assume that each of the components is compatible with one another and that one of each is to be selected. then by Fundamental counting principle , the number of different computer systems possible is given by :-

10x6x9x4= 2160

Hence, the number of different computer systems possible= 2160The Fundamental Counting Principle is a technique in Mathematics to calculate the number of possible outcomes by multiplying the events together .

HOPE THIS HELPED ;3

7 0

3 years ago

Tutoring Services: The Community College Survey of Student Engagement reports that 46% of the students surveyed rarely or never

mina [271]

Answer:

Mean: 0.400

Standard error: 0.022

Step-by-step explanation:

We are taking samples of size n=500 out of a population with parameter p=0.40.

The expected distribution is the sampling distribution of sampled proportions. This distribution has parameters that are calculated as:

Mean: the mean of the sampling distribution is equal to the population proportion, as it is not biased.

In this case, the mean of this sampling distribution is p=0.40.

Standard error: the standard error depends on the population proportion and the sample size. It is calculated as:

$\sigma_p=\sqrt\dfrac{p(1-p)}{N}}=\sqrt\dfrac{0.4*0.6}{500}}=\sqrt{0.00048}=0.022$

being p: population proportion, N: sample size.

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3 years ago

What is the exact value of the expression √486−√24+√6? Simplify if possible.

nikitadnepr [17]

√486 - √24 + √6 =
√81*6 - √4*6 + √6 =
9√6 - 2√6 + √6 =
8√6

The correct answer is 8√6.

5 0

3 years ago