how do i solve this step by step??

1. Simplify by multiplying 5 * 4.

20n

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Done by NeighborhoodDealer.

Answer:

(d-2) <-1

Step-by-step explanation:

The number be d. d minus 2 means (d-2).

(d-2) is less than -1.

It means,

(d-2) <-1

It is the required inequality.

So,

Adding 1 both sides.

d-2+1 <-1+1

d-1<0

or

d<1

Hence, this is the required solution.

The question is incomplete. Here is the complete question.

The Maryland State Department of Education reports that 12% of the high school students in that state attend private high schools. The University of Maryland wonders if the percentage is the same in their applicant pool. Admissions officers plan to check a random sample of the over 10,000 application on file to estimate the percentage of students applying for admission who attend private schools. They select a random sample of 450 applications, and find that 46 of those students attend private schools. Create and interpret a 95% confidence interval.

Answer and Step-by-step explanation: Th proportion of students that attend private schools in the sample is

[tex]p=\frac{46}{450}[/tex]

p = 0.102

At 95% confidence, z-score is 1.96.

Standard deviation for sample proportion is calculated as

[tex]\sigma = \sqrt{\frac{p(1-p)}{n} }[/tex]

For this sample, it will be

[tex]\sigma = \sqrt{\frac{0.10(1-0.1)}{450} }[/tex]

[tex]\sigma=\sqrt{0.0002}[/tex]

[tex]\sigma=0.01414[/tex]

Interval is calculated as

p ± zσ

Then

0.102 ± 1.96(0.01414)

0.102 ± 0.028

Interval is 0.074 < p < 0.13

What confidence interval means is that with a certainty of 95%, we are confident that  the true population proportion of students who attend private schools are between 0.074 and 0.13.

Answer:

9/25 or .36

Step-by-step explanation:

Answer:

Its b,c,d

Step-by-step explanation:

Answer:

[tex]2x+\frac{5x^2}{2}+\frac{x^4}{8}+C[/tex]

Step-by-step explanation:

I notice you have a dx at the end of the equation, this leads me to believe this is an integral. With no bounds of integration, I will solve for the indefinite integral. I will also interpret your equation as follows:

[tex]\int \:2+5x+\frac{1}{2}x^3dx[/tex]

Sum rule tells us:

[tex]\int \:2dx+\int \:5xdx+\int \frac{1}{2}x^3dx[/tex]

From this we get:

[tex]2x+\frac{5x^2}{2}+\frac{x^4}{8}[/tex]

Don't forget to add the constant!

[tex]2x+\frac{5x^2}{2}+\frac{x^4}{8}+C[/tex]

Answer:

36

Step-by-step explanation:

36/4 = 9 wish this helps!

Answer:

Step-by-step explanation

$3.75x5=18.75

18.75+10=$28.75

Step-by-step explanation:

So he starts with 10. That would be our y-intercept. That means that 3.75 is the slope because he saves that amount of money each week. So the equation would be y = 3.75x + 10.

The x represents the number of weeks (5), so we will plug that into the equation (y = 3.75(5) + 10).

Multiply 5 and 3.75 to get 18.75

Add 10 to get 28.75

Answer:

-2

Step-by-step explanation:

[tex](-3)^2+3(-3)-2\\=9-9-2\\=-2[/tex]

Answer:

first one is A second on is C third is B fourth is B HOPE THIS HELPS

Answer:

1. A

2.C

3.B

4.B

Step-by-step explanation:toke test

Answer:

Step-by-step explanation:

Here are your workings

4.87 x 7.23  simplify

Step 2

(4.87)(7.23)  Add brackets(Optional)

Then you multiply the two exponents to get 35.2101

Your answer would be 35.2101

Answer:

the sum of the numbers on Ella's five cards is -5

Step-by-step explanation:

Answer:

240$

Step-by-step explanation:

we know that

The simple interest formula is equal to

I=P(rt)

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

Sandra

t = 1 year

I= $75

P= $2,500

r= ?

substitute in the formula above

75=2,500 (r(1))

solve for r

r=75/2,500)

r= 0.03

Convert to percentage form

r= 0.03 * 100 = 3%

Ron

t=1 year

I = ?

P= 8,000

r= 0.03

substitute in the formula of interest

I = 8,000(0.03 *1)

I = $240

Complete question :

Which inequality is true if p = 2.8?

3p < 10.2

13.6 ≤ 3.9p

5p > 17.1

8.5 ≥ 2.5p

Answer:

3p < 10.2

8.5 ≥ 2.5p

Step-by-step explanation:

To obtain the true expression, put p = 2.8 in all the options and choose the true inequality expression :

3(2.8) < 10.2

8.4 < 10.2 ( true)

13.6 ≤ 3.9p

13.6 ≤ 3.9(2.8)

13.6 ≤ 10.92 ( False)

5p > 17.1

5(2.8) > 17.1

14 > 17.1 ( False)

8.5 ≥ 2.5p

8.5 ≥ 2.5(2.8)

8.5 ≥ 7 (True)

Answer:

.........................................................................................................................................................................

Step-by-step explanation:

Given:

Base area of cone =20 m²

Volume of the cone = 160 m³

To find:

The height of the cone.

Solution:

We know that, the volume of a cone is

[tex]V=\dfrac{1}{3}Bh[/tex]

Where, B is the base area and h is the height of the cone.

Putting V=160 and B=20, we get

[tex]160=\dfrac{1}{3}(20)h[/tex]

[tex]480=20h[/tex]

[tex]\dfrac{480}{20}=h[/tex]

[tex]24=h[/tex]

Therefore, the height of the cone is 24 m.

Answer:

A) (0,2)

Step-by-step explanation:

The Y-Intercept is where the line on the coordinate plane meets the y axis which in this case is 2

Answer:

A. (0, 2)

Step-by-step explanation:

So first things first, you will want to either put the line on a graph by hand or, in a graphing calculator, I recommend DESMOS

the table is a set of coordinates so

(-4, -18) (-2.5, -10.5) (-.4, 0) (0, 2) (2, 12)

Then you'll put these coordinates into a graph and the point you see touching the y-line is your answer, (0, 2)

hope this helps!!

Answer:

B. 4:1

Step-by-step explanation:

Since its 2 hours:30 minutes, in hours that is 2:1/2. So then if you want it in whole numbers you just multiply 2:1/2× 2 which would be 4:1.

Answer: x intercept = 6

This is the location (6,0)

===============================================================

Explanation:

I assume you're talking about the boundary line of the inequality. The boundary line equation is 2x + 3y = 12

To find the x intercept, plug in y = 0 and solve for x

2x + 3y = 12

2x + 3(0) = 12

2x = 12

x = 12/2

x = 6

The boundary line 2x+3y = 12 crosses the x axis at x = 6.

We can say the x intercept is x = 6. This is the location (6,0).

Side note: the y intercept is y = 4, which is found by plugging in x = 0 and solving for y.

Answer:

Step-by-step explanation:

It is not a function. (1,1) and (1,-4) are both points on the graph.

What phrases describes the expression of 16-y​

Answer: -9

Hope this helps~

Answer:

Taylor charges $5 more than Lucy for 2.5 hours.

Step-by-step explanation:

You need to find how much Taylor charges for 2.5 hours and how much Lucy charges for 2.5 hours.

Taylor:

$15 for first hour and then $10 for each hour r fraction of an hour.

Taylor charges $15 for the first hour.

Then the time remaining is 2.5 hours - 1 hour = 1.5 hours.

The charge for an hour or fraction of an hour after the first hour is $10 per hour.

1.5 hours * $10/hour = $15

Total charge for Taylor: $15 + $15 = $30

Lucy:

Lucy charges according to the function that we are shown.

According to the function, we need the middle equation since that is the one that includes 2.5 hours which is between 2 and 4 hours.

Th function that includes x = 2.5 hours is

f(x) = 10x

Since the number of hours is 2.5, then x = 2.5, and we evaluate the function for x = 2.5.

f(x) = 10x

f(2.5) = 10(2.5)

f(2.5) = 25

Lucy charges $25 for 2.5 hours.

Taylor charges $30. Lucy charges $25.

The difference is $30 - $25 = $5.

Answer: Taylor charges $5 more than Lucy for 2.5 hours.

Answer:

A, C, and D.

Step-by-step explanation:

The situations that represent linear growth are:

a) Martin's savings account increases because he deposits $25 each week.

d) Mei-Lin earns $9 an hour at her job.

Given are conditions, we need to check which of them shows a linear growth,

Linear growth refers to a constant increase in a variable over time or with respect to another factor.

In both situations (a) and (d), the variables involved change at a constant rate.

In situation (a), Martin's savings account increases by $25 each week. This represents linear growth because the savings account balance is increasing by a fixed amount ($25) on a regular basis (each week).

In situation (d), Mei-Lin earns $9 an hour at her job. This also represents linear growth as the amount Mei-Lin earns increases at a fixed rate ($9) per unit of time (hour).

On the other hand, situations (b) and (c) do not represent linear growth:

In situation (b), Cali's pay increases by 3% per year. This represents exponential growth, not linear growth, because the percentage increase is applied to the current value each year, resulting in a compounding effect.

In situation (c), an athlete getting into shape loses 2 pounds each week. This represents a constant rate of change, but it is not linear growth because the weight loss is decreasing over time.

As the athlete loses weight, the rate of loss may decrease due to factors like metabolism or diminishing returns.

Hence the correct options are a) and d).

Learn more about linear growth, click;

https://brainly.com/question/17143060

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Answer:

Step-by-step explanation:

p/s=5/16

x/4=5/16

x=4(5)/16

x=20/16

x=5/4

x=1.25 pints

Answer: Rachel recieved 45 votes.

Step-by-step explanation: Any easy way to solve this is to has the demonimator equal the total amount of votes. So in the questions, 8 is the denominator and 72 is the total amount of votes. To get from 8 to 72, you need to multiple 8 by 9. And whatever you do to the denominator, you must do to the numerator. So, 5 times 9 equal 45 which is the number of votes Rachel recieved.

Answer:

its always the third one

Step-by-step explanation:

Have a good day

Answer:

I would say 32 but I'm not sure

Step-by-step explanation: