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Pavel [41]
3 years ago
7

Evaluate the expression for the given value of the variable 3x + 5 when x = 5

Mathematics
2 answers:
lesya [120]3 years ago
6 0
Answer :
3(5) + 5
15 + 5
20
Amiraneli [1.4K]3 years ago
5 0

Answer:

Step-by-step explanation:

Putting value of x in the equation

3(5) + 5

= 15 + 5

= 20

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A container has 130 gallons of water and is being filled at a rate of 1/4 gallon each second. Another container has 200 gallons
jasenka [17]

Answer:

120 seconds

Step-by-step explanation:

To solve this question you have to make equation of both gallon.

Gallon 1 have 130 gallons of water at the start and filled by 1/4 gallon each second. If x equal to the time in seconds, the equation of gallon 1 volume will be:

g1= 130+ 1/4x

Gallon 1 have 200 gallons of water at the start and drained by 1/ 3  gallon each second,  the equation of gallon 2 volume  :  

g2= 200- 1/3x

When gallon 1 volume equal to gallon 2, it mean g1=g2

g1= g2

130+ 1/4x  =  200- 1/3x  

130- 200= -1/3x -1/4x

-70= - 4/12x - 3/12x

-7/12x= -70

7/12x= 70

x= 70*12/7

x= 120

6 0
3 years ago
A marathon is 26.2 miles long. There is a water station every 1 1/4 miles along the race route. How many water stations are need
BigorU [14]

Answer:

21

Step-by-step explanation:

Divide 26.2 by 1 1/4

6 0
4 years ago
What is a number between 364 and 384 that is a multiple of both 3 and 7
masya89 [10]

Answer:

378

Step-by-step explanation:

It will also be a multiple of 21 .

As it is divisible by 3  the first possibility is 366 so:-

364 + n = 21m

where n = 2,5,8,11,14...

Trying each number in turn we get:-

364 + 14 = 21m

21m = 378

m =  18

so the answer is 378



7 0
4 years ago
The price of a Delta airline ticket from Los Angeles to Boston increased to $440. This is a 15% increase. What was the old fare?
Elena L [17]
Answer: 374 is the old fare of the ticket form Los Angeles To Boston!!

Explanation: you would have to divide the $440 which is your right now price with the 15% increase that was put so then you would find out the actual number of how much was added which comes out to be( $66)!!

Hope this helps!!^^^^
8 0
3 years ago
A box of cereal advertised that the new box contained 30% more cereal than the previous box. If the new box contains 26 ounces o
rodikova [14]
20 ounces overall ;))))) hope this helped aye
7 0
4 years ago
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