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kondaur [170]
4 years ago
7

What is the perimeter of the triangle?

Mathematics
1 answer:
Anvisha [2.4K]4 years ago
6 0

Answer:

P = 36 units

Step-by-step explanation:

<u>Pythagoras</u>

ip = √(12² + 9²)

= √(144 + 81)

= √225

= √15²

= 15 units

P = 9units + 12units + 15units = 36 units

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Robert and Chris can skate 4 miles in 18 minutes. How far can they ride in 45 minutes?​
adell [148]

Answer: Robert and Chris can skate 10 miles in 45 minutes.

Step-by-step explanation:

Let's start by finding the unit rate.

\frac{4}{18} =\frac{2}{9} \\\frac{18}{18} =1

Robert and Chris can skate \frac{2}{9} of a mile in 1 minute. Now we can multiply both by 45 to see how far the can go in 45 minutes.

(\frac{2}{9}) (\frac{45}{1} )\\\frac{(2)(45)}{(9)(1)} \\\frac{90}{9} \\10

45x1=45

The can skate 10 miles in 45 minutes.

6 0
3 years ago
I need help!!!!!!<br> Help Needed!!!!
tatiyna

help with what? be sure to put everything you need to say into a question

5 0
3 years ago
URGENT PLS HELP&lt;3 Each person needs to rent a helmet for $5. Write the expression for the total cost for the helmets.
SpyIntel [72]

Answer:

5n

Step-by-step explanation:

cost of one helmet = $5

let 'n' be the number of person that is n=1,2,3,4........

note that the value of n is always a natural number

therefore the expression = 5n

where 5 is the cost one helmet

n is the number of persons

4 0
3 years ago
Read 2 more answers
A ribbon is 30cm long and it is cut into three pieces such that each piece is 2cm longer than the next. Represent this as an equ
Alisiya [41]

Answer:

Step-by-step explanation:

3 pieces such that each piece is 2 cm longer then the next...

x , x + 2, x + 4

x + x + 2 + x + 4 = 30

3x + 6 = 30

3x = 30 - 6

3x = 24

x = 24/3

x = 8

x + 2 = 8 + 2 = 10

x + 4 = 8 + 4 = 12

check...

8 + 10 + 12 = 30

18 + 12 = 30

30 = 30 (correct)...it checks out

the ribbon lengths are : 8 cm, 10 cm, and 12 cm

3 0
3 years ago
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Alyssa buys a carton of 12 eggs for $1.80. Which is the cost per egg?
sesenic [268]

Answer:

B is the answer

Cost of each egg= 1.80/12=$0.15

Step-by-step explanation:

7 0
3 years ago
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