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Anastaziya [24]
2 years ago
5

What is 85% of 21? I need to know for school because we're doing this project.

Mathematics
2 answers:
mylen [45]2 years ago
5 0

Answer:

85% of 21 is 17.85.

ivanzaharov [21]2 years ago
5 0

Answer: 17.85

Step-by-step explanation:

If rounded needed- 18

Hope this helped

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FOR BRAINLIST ANSWER AND 10 POINTS ANSWER ALL PLZ !!!!!
igor_vitrenko [27]
<h2>Greetings!</h2>

A)

<h3>If you can see, every 4 minutes the amount of water is increasing at a constant rate. </h3>

197 - 153 = 44

285 - 241 = 44

<h3>This means that at 8 minutes, because there is 153 gallons already in, we can divide 8 by 4 to see how many groups of 4 minutes there were. </h3>

8 ÷ 4 = 2

So then we can subtract two lots of 44 from 153:

153 - (44 x 2) = 65

<h3>So the starting amount was 65.</h3>

B)

<h3>The answer to B is the second option, because it is true that the amount of water is increasing. This is by 44 gallons per 4 minutes.</h3>

The amount of gallons per minute can be found out by dividing the amount by 4:

44 ÷ 4 = 11

<h3>So it is 11 gallons per minute.</h3>
<h2>Hope this helps!</h2>
3 0
3 years ago
What is the measure of b if a=20 and c=29. using the pythagorean theorem ​
kicyunya [14]

Since a^2+b^2=c^2 becomes 20^2+b^2=29^2, we solve for b:

400+b^2=841

b^2=441

b=21

So the length of b is 21 units.

Hope this helped!

5 0
3 years ago
Read 2 more answers
Write the next three terms of the arithmetic sequence.
Inga [223]

Answer:

36, 44, 52

Step-by-step explanation:

Just add 8 to 28 = 36

Add 8 to 36 = 44

Add 8 to 44 = 52

8 0
3 years ago
Read 2 more answers
The elevation E, in meters, above sea level at which the boiling point of a certain liquid is t degrees Celsius is given by the
Anna007 [38]

Answer:

E(119.5)= 730m

Step-by-step explanation:

Given

E(t)= 1200(120-t)+520(120-t)^2

Required

Determine E(119.5)

E(t)= 1200(120-t)+520(120-t)^2

Simply substitute 119.5 for t

E(119.5)= 1200(120-119.5)+520(120-119.5)^2

Evaluate the expressions in bracket

E(119.5)= 1200(0.5)+520(0.5)^2

Solve 0.5²

E(119.5)= 1200 * 0.5+520*0.25

E(119.5)= 600+130

E(119.5)= 730

Hence;

E(119.5)= 730m

5 0
3 years ago
A merchant bought 30 dozen pairs of gloves. How many individual gloves did the merchant buy?
gtnhenbr [62]
In this question there are several information's of immense importance already given.
The number of pair of gloves that the merchant bought = 30 dozens
1 dozen = 12 gloves
Also
1 pair = 2 gloves
Then
The total numberof individual gloves bought
by the merchant = 30 * 12 * 2
                             = 720
The correct option among all the options given in the question is option "C" and it can be checked via the above solution.
3 0
3 years ago
Read 2 more answers
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