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
erastova [34]
3 years ago
8

Look at the image below

Mathematics
1 answer:
boyakko [2]3 years ago
4 0

Answer:

201.1 km²

Step-by-step explanation:

Surface area of the figure,

4πr²

= 4×π×4²

= 64π

= 201.1 km² (rounded to the nearest tenth)

You might be interested in
How many solutions does the equation 3(x-5)-7=-3x8 have
LenaWriter [7]

Answer:

not really good at maths. 15.33

Step-by-step explanation:

3(x-5)-7=3×8

3x-15-7=24

3x =24+15+7

3x = 46

Three will divide it's self to give you one and divide 46 to give you 15.333

(correct me if i'm wrong)

8 0
3 years ago
-2×-7y=30 <br>7×+4y=18 <br>×= <br>y=​
Sati [7]

Answer:

Answer is -7      Hope this helps :D

Step-by-step explanation:

6 0
3 years ago
Solving a word problem involving rates and time conversion
OLEGan [10]
Distance = rate x time
Distance = 221 miles
Rate = 68 mph
221 miles = 68 mph x time
221 miles/68 mph = time
3.25 hours = time
6 0
3 years ago
PLEASEE HELLLLP!!!! THE PICTURE SHOWS THE MATH PROBLEM!
Sindrei [870]

Answer:

4 x 3, 1/2 x 4, 1/2 x 3

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Suppose you are investigating the relationship between two variables, traffic flow and expected lead content, where traffic flow
prisoha [69]

Answer:

The answers is " Option B".

Step-by-step explanation:

CI=\hat{Y}\pm t_{Critical}\times S_{e}

Where,

\hat{Y}= predicted value of lead content when traffic flow is 15.

\to df=n-1=8-1=7

 95\% \ CI\  is\  (463.5, 596.3) \\\\\hat{Y}=\frac{(463.5+596.3)}{2}\\\\

     =\frac{1059.8}{2}\\\\=529.9

Calculating thet-critical valuet_{ \{\frac{\alpha}{2},\ df \}}=-2.365

The lower predicted value =529.9-2.365(Se)

463.5=529.9-2.365(Se)\\\\529.9-463.5=2.365(Se)\\\\66.4=2.365(Se)\\\\Se=\frac{66.4}{2.365} \\\\Se=28.076

When 99\% of CI use as the expected lead content: \to 529.9\pm t_{0.005,7}\times 28.076 \\\\=(529.9 \pm 3.499 \times 28.076)\\\\=(529.9 \pm 98.238)\\\\=(529.9-98.238, 529.9+98.238)\\\\=(431.662, 628.138)\\\\=(431.6, 628.1)

8 0
3 years ago
Other questions:
  • Patrick made a simple sugar solution using 3 parts of sugar and 4 parts water. Thomas made a sugar solution using 6 parts sugar
    10·1 answer
  • Helppp!!! Which factor is important to consider when buying a car for commuting long
    7·1 answer
  • A box filled with 2 red cards , 2 green cards , and 14 yellow cards. A card is chosen at random from the box. What is the probab
    6·2 answers
  • Which is equal to 1,000 millimeters<br> 70 centimeters <br> 700 decimeter<br> 7 meters
    12·1 answer
  • What is 20 divided by 2
    8·2 answers
  • Factor completely, then place the factors in the proper location on the grid. y2 - xy - 56x2​
    14·1 answer
  • A line has a slope of -5 and
    15·1 answer
  • Henry wants to join a book of the month club. The first club costs $30 to join and $10 per
    7·1 answer
  • How are angles used in daily life?
    9·2 answers
  • Which of these statements is true?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!