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prisoha [69]
3 years ago
7

PLEASE HELP EMERGENCY !! PLS PLS

Mathematics
2 answers:
Elena-2011 [213]3 years ago
6 0

Answer:

4

Step-by-step explanation:

tatyana61 [14]3 years ago
4 0
Call 911 then but the answer is $4 because 12/3 is 4
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What is 95% of 800?​
Komok [63]

Answer:

760

Step-by-step explanation:

95 x 800 / 100 = 760

6 0
3 years ago
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I need to a paint a spherical storage tank in the pool. it has a radius of 8 feet and the paint cans i brought will cover 75 squ
Alexxandr [17]
<h3>Answer:   11 cans</h3>

======================================================

Explanation:

SA = surface area of the sphere

SA = 4*pi*r^2

SA = 4*pi*8^2

SA = 804.247719

The surface area is roughly 804.247719 sq ft.

I used the calculator's stored version of pi to get the most accuracy possible.

Since 1 paint can covers 75 sq ft, divide that surface area over 75 to find out how many cans you need.

804.247719/75 = 10.72330292

Round up to the nearest integer to get 11

You'll have leftover paint, but it's better to go over the goal than come up short.

8 0
2 years ago
HELP ASAP PLZZZ!!!! (Check in the picture for the question and the answers to choose from)
Tom [10]

Answer:


Step-by-step explanation:

-18 i think


4 0
3 years ago
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Suppose that an airplane is currently flying at an altitude
dsp73

Answer:

i just want points

Step-by-step explanation:

7 0
3 years ago
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Sodium-24 has a half-life of 15 hours. how many grams of a 900 g sample will remain after 90 hours
raketka [301]

Answer: Option 'B' is correct.

Step-by-step explanation:

Let the initial concentration be

N_0=900\ g

Let concentration after t= 90 hours be N

Since we have given that Sodium-24 has a half life of 15 hours i.e.

t_{\frac{1}{2}}=15

So, According to question,

\text{ Number of half lives }=\frac{t}{t_{\frac{1}{2}}}\\\\\text{ Number of half lives }=\frac{90}{15}\\\\\text{ Number of half lives }=6

As we know that

\frac{N}{N_0}=(\frac{1}{2})^n\\\\N=N_0\times (\frac{1}{2})^n\\\\N=900\times (\frac{1}{2})^6\\\\N=\frac{900}{64}\\\\N=14.0625\ g

Hence, Option 'B' is correct.

4 0
3 years ago
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