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Ne4ueva [31]
3 years ago
15

18x + 13y where x = 14 and y = 12

Mathematics
2 answers:
gulaghasi [49]3 years ago
8 0

Answer:

Substitute

18(14) + 13(12)

252 + 156

409

IRINA_888 [86]3 years ago
3 0

Answer:

252 + 156 = 408

Step-by-step explanation:

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Hadley paddled a canoe 2/3 mile in 1/4 hour. How fast did Hadley paddle, in miles per hour?
irina [24]

Answer:

d

Step-by-step explanation:

Hadley paddled a canoe 2/3 mile in 1/4 hour. it will be 4 times more in an hour because 1/4*4=4/4=1. 2/3*4=8/3=2 2/3

8 0
3 years ago
A and b are positive integers and a–b = 3. Evaluate the following:
yulyashka [42]

1/27

1/27

125

Step-by-step explanation:

Given that,

a - b = 3

9^(1/2b) /3^a = 3^(2/2b) /3^a

= 3^b/3^a

= 3^(b-a)

= 3^(-3)

= 27^(-1)

= 1/27

27^(1/3b) /9^(1/2a) = 3^(3/3b) /3^(2/2a)

= 3^b/3^a

= 3^(b-a)

= 3^(-3)

= 27^(-1)

= 1/27

125^(1/3a) /25^(1/2b) = 5^(3/3a) /5^(2/2b)

= 5^a/5^b

= 5^(a- b)

= 5^3

= 125

6 0
3 years ago
You decide to take your car on a drive through Canada, where gas is sold in liters and distances are measured in kilometers. Sup
12345 [234]

Answer:

the no of liters required is 50.55 liters

Step-by-step explanation:

Given that

The car gas efficiency is 23.0 mi/gal

distance is 495 km

1 gal = 3.78 L

1 km = 0.6214 mi

We need to find out the no of liters of gas that would needed to complete a trip

So,

= (495 × 3.78 × 0.6214) ÷ (23)

= 50.55 Liters

hence, the no of liters required is 50.55 liters

7 0
3 years ago
Bryan paid $136.00 for an item at the store that was 20% off the original price. What was the original price?
Dennis_Churaev [7]
The original price was $270.00
4 0
3 years ago
How can you be sure that 9.9 ÷ 1,000 = 0.0099?
Nastasia [14]

Answer:

When dividing by 1000, move the decimal point three places to the left (the last one)

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
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