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OlgaM077 [116]
2 years ago
15

PLEASE HELP ME(NO FAKE ANSWERS) PLEASE 15 points! All my points

Mathematics
1 answer:
Tanya [424]2 years ago
6 0

Answer:

1. (2.75) , (\sqrt{8}), (2.8) , (\sqrt{10})

2. \sqrt{13}, 3.5, -\sqrt{12}, -3.5

Step-by-step explanation:

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What is the volume?<br> 9 cm<br> 8cm<br> 6 cm
vova2212 [387]

Answer:

432cm^3

Step-by-step explanation:

Volume=l×b×h

=9×8×6

432cm^3

6 0
3 years ago
Read 2 more answers
7
elixir [45]

The area of the track will be 78501 m². The area of the track is equal to the area of the circle.

<h3>What is the area?</h3>

The space filled by a flat form or the surface of an item is known as the area.

The number of unit squares that cover the surface of a closed-form is the figure's area. Square meters and other similar units are used to measure area.

The area of the track is found as;

\rm A=\frac{\pi}{4} d^2 \\\\ \rm A=\frac{3.14}{4} (100)^2 \\\\ A=7850 \ m^2

Hence, the area of the track will be 78501 m².

To learn more about the area, refer to the link;

brainly.com/question/11952845

#SPJ1

8 0
2 years ago
12. Currently, there are 350 students in the seventh grade at Winchester
sweet [91]

Answer:

Winchester Heights Middle School plan to have 385 students in the  upcoming school year.

Step-by-step explanation:

Total number of students in the seventh grade at Winchester  Heights Middle School = 350

For the upcoming school year, they are planning to  increase the number of seventh graders by 10%.

Rate of increase = r = 10% = 0.1

Formula :N(t)=N_0(1+r)^t

Where N_0= initial population = 350

r = rate of increase =0.1

N(t)=Population after t years

t = time in years

So, Population after 1 year = 350(1+0.1)^1 =385

Hence  Winchester Heights Middle School plan to have 385 students in the  upcoming school year.

5 0
3 years ago
Find the number of permutations of the first 9 letters of the alphabet, taking 4 letters at a time.
Vinil7 [7]

Solution-

First 9 letters of alphabet are- A,B,C,D,E,F,G,H,I

Total number of ways of selection of 4 letters from 9 alphabets = 9C4

=9!÷((4!).(9-4)!) = 9!÷(4!×5!) = (9×8×7×6)÷(24) = 126

The number of ways of arranging these 4 numbers = 4! = 24

∴ Total number of possible permutations = 9C4×4! = 126×24 = 3024

∴ option number 2 is correct.

8 0
3 years ago
Read 2 more answers
The ratio of teachers to students on a field trip to New York City is 2 to 9. If there are 243 students on the trip,
Veseljchak [2.6K]

Answer:

54 teachers

Step-by-step explanation:

Step one:

given data

The ratio of teachers to students on a field trip to New York City is 2 to 9.

That is the ratio is 2:9

We are told that there are 243 students

Required

We want to find the number of teachers

Step two:

Applying the part to part method we have

let the number of teachers be x

2/9= x/243

cross multiply we have

9x= 243*2

9x= 486

divide both sides by 9

x= 54

Hence there are 54 teachers

4 0
3 years ago
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