1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rina8888 [55]
3 years ago
13

Please answer before Monday 9 a.m.I have to go to school that day at that time.

Mathematics
1 answer:
xeze [42]3 years ago
6 0

Answer:

  • <u>First choice, 984 cm²</u>

Explanation:

The plastic pencil case has form of a triangular prism.

This triangular prism has five faces:

  • Top and bottom faces: two congruent triangles with a 10 cm base and 12 cm height.

  • Lateral faces: two congruent rectangles with a 24 cm length and 13 cm widht, and one rectangle with 24 cm length and 10 cm widht.

<u>Surface area:</u>

  • <u>Top and bottom triangles</u>:

        area = (1/2) base × height

         area of one triangle = 10 cm × 12 cm × (1/2) = 60 cm²

          area of the two triangles = 2 × 60 cm² = 120 cm²

  • <u>Lateral rectangles:</u>

        area of a rectangle = length × width

         area of the trhee triangles = 24 cm × 10 cm + 2 × 24 cm × 13 cm = 240 cm² + 624 cm² = 864 cm².

  • <u>Total area: </u>120 cm² + 864 cm² = 984 cm²

Answer: first choice, 984 cm²

You might be interested in
343 divided by 7 in long division
gayaneshka [121]
343 divided by 7 is 49

There are 49 groups of 7 in 343

The answer is 49
6 0
3 years ago
use 3.14 n for to estimate the area of a circle if the diameter is given on your answer to the nearest hundredth if necessary​
s2008m [1.1K]

Answer: The Answer is pie

Step-by-step explanation:

8 0
3 years ago
Four subtracted from the reciprocal of a number
seropon [69]
The reciprocal of a number is the opposite of any known/unknown number
-x
four subtracted from this
-x-4
8 0
3 years ago
The accompanying data represent the miles per gallon of a random sample of cars with a​ three-cylinder, 1.0 liter engine.a. Comp
Kobotan [32]

Answer:

1). Z score = 1.464733

Mean = 38.87917

Standard deviation = 3.609405

2). Quartiles:

Q1 = 37.025

Q2 = 38.450

Q3 = 40.800

3). IQR = 3.775

4).

CI (lower fence) = 37.4351

CI (upper fence) =  40.32323

5). There is outlier in the data set. Please see attached box plot for evidence.

Step-by-step explanation:

1). By Z score, we mean:

Z = \frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}}},

where:

x-bar ==> mean(g) = 38.87917

\mu = 37.80

standard deviation = 3.609405

sample size (n) = 24.

2). By quantile, we mean:

Q = L + (i*(n/4) - Cf)*c

Where L is the lower class limit of the quartile class

Cf is the cumulative frequency before the quartile class

c  is the class size.

3) . IQR = Q3 - Q1

4). CI = \mu \pm *Z_{\alpha/2} \frac{\sigma}{\sqrt{n}},

Where Z_{\alpha/2}  ==> 1.96

In order to replicate and obtain the result, please use the R code below:

g = c(31.5, 36.0, 37.8, 38.5, 40.1, 42.2,34.2, 36.2, 38.1, 38.7, 40.6, 42.5,34.7, 37.3, 38.2, 39.5,  

41.4, 43.4,35.6, 37.6, 38.4, 39.6, 41.7, 49.3)

boxplot(g)

Z = (mean(g) - 37.8)/(sd(g)/sqrt(length(g)))

mean(g)

quantile(g)

IQR(g)

CIl = mean(g) - 1.96*(sd(g)/sqrt(length(g)))

CIU = mean(g) + 1.96*(sd(g)/sqrt(length(g)))

4 0
3 years ago
Laina ordered six pizzas for her slumber party. This picture shows how much was left of each pizza the next morning. What
tensa zangetsu [6.8K]

Answer:

theres no picture therefore there is no answer to the question

8 0
2 years ago
Other questions:
  • A manufacturing firm wants to package its product in a cylindrical container
    12·1 answer
  • Show Work and explain but quickly, please.
    10·1 answer
  • PLEASE HELP! 40 POINTS!
    14·1 answer
  • terri planned a fence for her pool.she asked bess fences to fence the largest area possible using 40 feet of fencing. what was t
    7·1 answer
  • A Ferris wheel has a diameter of 140 ft. There are 40 cars for riders, and they are placed at even intervals around the Ferris w
    9·1 answer
  • |6m−2|=0 please help
    11·2 answers
  • Consider the graph below:<br><br><br> What is the equation of the line in slope-intercept form?
    14·1 answer
  • -3 (3c + 5) = 2 (10 - c)
    13·1 answer
  • 1 point
    12·1 answer
  • -y/6=<br> -52 <br> Simplify your answer as much as possible.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!