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
Damm [24]
2 years ago
7

A toy is in the form of a cone mounted on a hemisphere of common base radius 7cm. The total height of the toy is 31cm. What's th

e total surface area of the toy?
1  465
2  769
3  835
4  912​
Mathematics
1 answer:
Rudiy272 years ago
8 0

\huge\tt\pink{Answer}

A≈852.83cm²

<em>Radius</em>

7cm

<em>Height</em>

31cm

You might be interested in
. A random sample of 100 children with working mothers showed that they were absent from school an average of 6 days per term wi
erica [24]

Answer:

a) The equation is:

Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples

b) The 98% confidence interval = (5.62784, 6.37216)

Step-by-step explanation:

a. Write down the equation you should use to construct the confidence interval for the average number of days absent per term for all the children. (10 points)

Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples

b. Determine a 98% confidence interval estimate for the average number of days absent per term for all the children. (10 points)

Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples

Mean = 6 days

Standard deviation = 1.6 days

Number of samples = 100

Z score of 98% confidence interval = 2.326

Confidence interval = 6 ± 2.326 × 1.6/√100

= 6 ± 2.326 × 1.6/10

= 6 ± 0.37216

= 6 - 0.37216

= 5.62784

6 + 0.37216

= 6.37216

Therefore, the 98% confidence interval = (5.62784, 6.37216)

6 0
3 years ago
Mrs. Alvarez has a piece of ribbon that is 2.65 feet long. She cuts the ribbon into 5 equal parts. Which is the best estimate of
yulyashka [42]

Answer:

.53

Step-by-step explanation:

Well all you gotta do is basically just divide so it will be 2.65 divide by 5 which would equal the answer which is .53 for all sides

5 0
2 years ago
Need help please thank you if you help
Alexus [3.1K]

Answer:

1) 3\f\frac{2}{3}=2\\2) x\frac{x}{18} =18\\3)12\frac{12}{y}=y \\4)x\frac{x}{6} =6

7 0
2 years ago
1
Papessa [141]

Answer:

d = 10/72

Step-by-step explanation:

c and d vary inversely

c = k/d

Where,

k = constant of proportionality

d = 2/9 when c = 5

c = k/d

5 = k ÷ 2/9

5 = k × 9/2

5 = 9k/2

Cross product

5*2 = 9k

10 = 9k

k = 10/9

c = k/d

c = 10/9 ÷ d

c = 10/9 × 1/d

c = 10/9d

find d when c = 8

c = 10/9d

8 = 10/9d

Cross product

8*9d = 10

72d = 10

d = 10/72

8 0
3 years ago
Write the verbal phrase as an algebraic expression/equation: a number m cubed
hram777 [196]
Ttps://www.palmbeachstate.edu/prepmathlw/Documents/translatingkeywords.pdf

Try seeing if this link works it should help

5 0
3 years ago
Other questions:
  • Please respond fast! Joey has a chart at his house where he records his height on his birthday each year. In a separate column,
    8·1 answer
  • O eliminate the y-terms and solve for x in the fewest steps, by which constants should the equations be multiplied? First Equati
    6·1 answer
  • Find the distance of 2 cities that are 2 inches apart on a scale of 1/4inch=50miles
    15·1 answer
  • The diagonals of a rhombus are _____.
    15·2 answers
  • What is the sum of 8 and 7 doubled in a numerical expression
    8·1 answer
  • Can you guys help me with number 13 pls.
    13·1 answer
  • Help asap I will give you points ​
    5·2 answers
  • LAST ONE OK BUT HELP PLZ​
    15·1 answer
  • Find the area.<br> The area of the trapezoid is<br><br> square centimeters.fill in the blank
    7·1 answer
  • Andre says that 3 \div÷ 2/3 = because there are 4 groups of 2/3 and 1/3 left. Do you agree with Andre?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!