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nasty-shy [4]
3 years ago
6

you are in a room with other students and are asked to get in groups of 3. when finished, there are 21 groups of 3. how many stu

dents are in the room?
Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
5 0
63 because you multiply the numbers
Nataliya [291]3 years ago
4 0

Answer:

63

Step-by-step explanation:

Total groups: 21

number of students in each group: 3

total = 21 *3 =63

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PLZ HURRY ITS TIMEDDD
Dafna11 [192]

Answer:

Option C. 4(20-16y): Each side measures 20-16y units.

Step-by-step explanation:

we know that

The perimeter of a square is equal to

P=4b

where

b is the length side of the square

we have

P=(80-64y)\ units

substitute the given value in the formula

(80-64y)=4b

solve for b

Divide by 4 both sides

(20-16y)=b

Rewrite the expression

b=(20-16y)\ units

<em>Alternative Method</em>

we have

P=(80-64y)\ units

Factor 4

P=4(20-16y)\ units

so

Each side measures (20-16y) units.

7 0
3 years ago
What is slope of the line that passes through the point (0,7)and(8,7)
lana66690 [7]

Answer:

0

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(7-7)/(8-0)

m=0/8=0

5 0
3 years ago
Please help with this!!! Im so confused, I will mark brainliest if right!! Explain
devlian [24]

Answer: Yes these triangles are similar

Step-by-step explanation:

First lets write down what we know just to make life easier

x=9

TL should be similar to CH

LY should be similar to KH

The angles should be equal due to SAS

So the first thing we know is true is the fact that they have equal angles. Now we have to find out if the sides are similar or if they change by the same ratio to the other. If TL is similar to CH and TL=25  and CH=10 what is the change in size or dilation. Division should do the trick so 25/10=2.5 so TY is greater than CH by a factor of 10. Which means that LY should also be greater than KH by a factor of 2.5. If we are told that x=9 than side LY or 4(9)-1=35 and KH 9+5=14

So side KH is 14 and LY is 35. Now to check if they are similar then KH should be greater by a factor of 2.5. If this is not true than the sides are not similar.  35/2.5=14

Since 35 divided by 2.5 is 14 we can tell both sides TL and LY are greater than KH and CH by a factor of 2.5

Hope this helps.

8 0
3 years ago
A cylindrical swimming pool has a diameter of 16 feet and a height of 3 feet. How many gallons of water can the pool contain? Ro
Sever21 [200]

Answer:

<em>4,524 gallons</em>

Step-by-step explanation:

The volume of any cylinder is 

 π (radius)² (height) .

The pool's radius is 1/2 its diameter = 8 ft.  So its volume is

 π (8 ft)² (3 ft)

= π · (64 ft²) · (3 ft)

= π · 192 ft³

= 603.2 ft³ .

(603 ft³) · (7.5 gal / 1 ft³) = 4,524 gallons

Hope this helps :D

8 0
3 years ago
Read 2 more answers
The sum of nine-tenths and g is two-thirds solve for g
Naya [18.7K]

Answer:

- 7/30

Step-by-step explanation:

9/10 + g = 2/3

So subtract 9/10 from both sides of the equation to get g = -7/30

Thank me later :D

4 0
3 years ago
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