Mathematics College

the model below is shaded to represent an expression. which expression represents the model? PLS HELPPPPP

Answers

Answer 1

Answer:C

Step-by-step explanation:

Answer 2

The expression that most adequately expresses the model would be:

C). 3 × 2/5

What is a fraction?

A fraction is described as an expression employed to denote a segment or section belonging to a larger whole.

In the given question, it can be observed that the model contains 10 parts in total with a division of 5 each into 2 parts.

Since the division of 2 is made thrice, it gives 3 × 2/5 which makes the third option the correct one.

Thus, option C is the correct answer.

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Related Questions

Multiply the polynomials (y −5)(2y+ 3)

Answers

Answer:

(-3 + -2y)(5 + -1y) = 0

Step-by-step explanation:

Simplifying

(y + -5)(2y + 3) = 0

Reorder the terms:

(-5 + y)(2y + 3) = 0

Reorder the terms:

(-5 + y)(3 + 2y) = 0

Multiply (-5 + y) * (3 + 2y)

(-5(3 + 2y) + y(3 + 2y)) = 0

((3 * -5 + 2y * -5) + y(3 + 2y)) = 0

((-15 + -10y) + y(3 + 2y)) = 0

(-15 + -10y + (3 * y + 2y * y)) = 0

(-15 + -10y + (3y + 2y2)) = 0

Combine like terms: -10y + 3y = -7y

(-15 + -7y + 2y2) = 0

Solving

-15 + -7y + 2y2 = 0

Solving for variable 'y'.

Factor a trinomial.

(-3 + -2y)(5 + -1y) = 0

Answer: 2y^2−7y−15

Hope this helps :)

middle school math problem.....

Answers

Answer:

hi bro how are yuo join this meeting i will say you ans

Step-by-step explanation:

Answer:

Part A: 27.32

Part B: 4.92

Step-by-step explanation:

25.30*.08(or 8%) is equal to 2.024

25.30+2.024=27.324=27.32

32.24-27.32=4.92

Pls help! And I will mark you as brainlist im not joking!

Answers

Answer:

[tex]third \: answer \\ if \: f(x) < 0 \\ - 6 < x < 2[/tex]

Rewrite the expression by combining like terms.
3x^2 + y + 2y^2 + 4y^2

Answers

Answer:

3x^2 + 7y^2

Step-by-step explanation:

3x^2 + y + 2y^2 + 4y^2 = 3x^2 + 7y^2

Simplify the expression Z^0⋅(Z^2⋅Z^−5)^4 using positive exponents
possible answers:
a.)Z^81
b.) 0
c.) 1/Z^12
d.) 1/Z^40

Answers

Jajabhsuababahaisiajnq

Could someone verify this answer if you don’t know the answer don’t say anything I don’t want to download the answer if you can’t tell me don’t say anything the question says find the area of the compound figure

Answers

Answer:

288

Step-by-step explanation:

8 x 3 x 3 x 6 = 288

Answer:40
The rectangle can be sectioned into two, with one of the areas being 3x8=24 and the other 3x6=18, add those together 24+18= 40cm

what is tariffwhat is tariff

Answers

Answer:

Step-by-step explanation:

A tariff is a tax imposed by a government of a country or of a supranational union on imports or exports of goods. Besides being a source of revenue for the government, import duties can also be a form of regulation of foreign trade and policy that taxes foreign products to encourage or safeguard domestic industry

A school librarian ordered new books

Answers

Answer:

Step-by-step explanation:

Answer:

8232

Step-by-step explanation:

A random sample of students was surveyed on what they eat for lunch at school. The results are shown in the table
below.
Lunch Item
Number of Students
Pizza
52
Salad
26
Burger
30
Chicken Sandwich
48
Brought lunch from home
44
If the school has 1,000 students, about how many students can the cafeteria expect to buy pizza?
208
1,000
260
52

Answers

Answer:

260

Step-by-step explanation:

you would divide 52/200 because all the numbers added up is 200 and it comes out to 0.26 and the original number of students they wanted is 1,000 so look at those zeros and move the decimal 3 times and add the zero in the empty space to get 260.

A ratio shows us the number of times a number contains another number. The number of students the cafeteria should expect to buy pizza is 260.

What is a Ratio?

A ratio shows us the number of times a number contains another number.

The ratio of the number of students to the number of total students can be written as,

Ratio = (Number of students)/(Number of total students)

Ratio = 52/(52+26+30+48+44) = 52/200

Now, the same ratio is applicable to 1000 students, therefore, the ratio will be,

Number of students who prefer pizza = 1000 × (52/200) = 260

Hence, the number of students the cafeteria should expect to buy pizza is 260.

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WILL GIBE BRAINLIEST ASAP

Answers

Answer:

A and D have whole grid squares that are the same size and aren't over lapping

C has overlapping grid squares making it hard to count

B can't be used to find area because some of the grid squares are different sizes

You still could use B because four of the smaller squares seems to be equivalent to one of the larger squares

Step-by-step explanation:

Answer:

the guy up there is right

Step-by-step explanation:

Pleaseee helppp which one is and whyy!!!!

Answers

Answer:

c = 17(83)-17(16)=1139

Step-by-step explanation:

What is the solution to the equation?

Answers

Answer:

r = 29.82

Step-by-step explanation:

r/7.1 = 4.2

r = 7.1 x 4.2

r = 29.82

Answer:

29.82

Step-by-step explanation:

First, we multiply all terms by the same number to get rid of the denominators.

71 x /71/10 = 71 x 42

Next, we cancel the multiplied terms in denominator.

10 = 71 x 4.2

Solve!

10 = 29.82

This is for a friend-
What's the answer to this question? And please explain

Answers

Answer:

I belive it;s 4/5

Step-by-step explanation:

Answer:

Step-by-step explanation:

4 divided by 2 = 2

use the given area to find the scale factor from the small figure to the large

Answers

don’t trust the person above me

A group of students is painting the background of a set for a school play what is the area of the part that is painted in gray

Answers

144 I’m not sure tho

In a study of academic procrastination, the authors of a paper reported that for a sample of 451 undergraduate students at a midsize public university preparing for a final exam in an introductory psychology course, the mean time spent studying for the exam was 7.74 hours and the standard deviation of study times was 3.10 hours. For purposes of this exercise, assume that it is reasonable to regard this sample as representative of students taking introductory psychology at this university.

Required:
Construct a 95% confidence interval to estimate μ, the mean time spent studying for the final exam for students taking introductory psychology at this university.

Answers

Answer:

The 95% confidence interval to estimate μ is between 7.45 hours and 8.03 hours.

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.95}{2} = 0.025[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.025 = 0.975[/tex], so Z = 1.96.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

[tex]M = 1.96\frac{3.1}{\sqrt{451}} = 0.29[/tex]

The lower end of the interval is the sample mean subtracted by M. So it is 7.74 - 0.29 = 7.45 hours

The upper end of the interval is the sample mean added to M. So it is 7.74 + 0.29 = 8.03 hours

The 95% confidence interval to estimate μ is between 7.45 hours and 8.03 hours.

Preform the following calculations (+10) + (-45)

Answers

Answer:

Step 1: Find out what 10 to the 5th power is equal to. it = 100,000

Step 2: Multiply 100,000 by 10

Step 3: your answer = 1,000,000

Answer:

-35

Step-by-step explanation:

The length of a rectangular garden is 8m greater than twice the width the area of the garden is 280m^2 what is the width of the garden

Answers

Step-by-step explanation:

Given :-

The length of the garden 8m greater than 2 times the width.

Area of the garden is 280 m²

Let us consider the length as x and width as y.

Sp, we can day length as :-

x = 8 + 2y ---(1)

Now, we know that:-

Area of Rectangle = Length × Breadth

280 = x * y

We can replace the value of x now,

280 = y × ( 8 + 2y)

280 = 8y + 2y²

2y² + 8y - 280 = 0

y² + 4y - 140 = 0

Factorise it.

(y -10)(y + 14)

Cancelling -ve value, we get the width as 10 metres.

Hope it helps :)

Answer:

Step-by-step explanation:

Width = w

Length = 2w + 8

Area of rectangular garden = 280 square meter

length * width = 280

(2w + 8 ) *w = 280

2w * w + 8*w = 280

2w² + 8w = 280

2w² + 8w - 280 = 0

Divide the whole equation by 2

w² + 4w - 140 = 0

w² + 14w - 10w - 14 *10 = 0

w(w + 14) - 10(w + 14) = 0

(w + 14)(w - 10)= 0

w - 10 = 0 {Ignore w + 14, as measurements will not be -ve}

w = 10 m

l = 2*10 +8

= 20 +8

l = 28 m

Find the circumference of the circle and round to the nearest tenth

Answers

okkkkkkkkkkkkkkkkkkkk

Answer: 13.8

Step-by-step explanation: (3.14)(4.4) round to the nearest tenth

30 percent of 600 is 180

Two high schools have a similar number of students and parking lots of similar size. The safety officers at both schools want to investigate whether there is an average difference in the number of cars parked per day in the student parking lots for the school year. A random sample of 15 school days will be selected. For each selected day, the number of cars parked in the student parking lots will be counted at both schools and the difference will be recorded. Assuming all conditions for inference are met, which of the following is the appropriate test for the investigation?
a. A two-sample 2-test for a difference between proportions
b. A two-sample t-test for a difference between means
c. A matched-pairs t-test for a mean difference
d. A chi-square test of homogeneity
e. A chi-square test of independence

Answers

Answer: c. . A matched-pairs t-test for a mean difference

Step-by-step explanation:

Based on the information given in the question and assuming all conditions for inference are met, the appropriate test for the investigation will be a matched-pairs t-test for a mean difference.

Since a matched-pairs t-test can be used to determine if a significant mean difference exist between two paired data, then this will be appropriate in this case since the safety officers at both schools want to know if there's an average difference in the number of cars parked per day in the student parking lots for the school year.

The appropriate test for the investigation of the given case is done by: Option C: A matched-pairs t-test for a mean difference

When to use the matched pair t test and when to use the t test?

When there has to be done comparison between means of two sets of paired data, then we use matched pair t test.

For the given case the investigation is to know whether there is an average difference in the number of cars parked per day in the student parking lots for the school year for both the schools in consideration.

So there are two data sets and comparison of their mean is to be done.

Thus, the appropriate test for the investigation of the given case is done by: Option C: A matched pairs t-test for a mean difference.

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WORTH 20 POINTS!!

Zoe is starting her own snow plowing business. Zoey thinks she will do a better job than her competitors, so she thinks she can charge $11 per hour. If she knows she will only be able to work 40.25 hours per week, how much money will she earn each week?

Answers

Answer: 442.75

Step-by-step explanation:

40.25 * 11 = 442.75

She will earn $442.75 as u have to do 11 x 40.25 to get the total hours per week.

Hope this helps!

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