C=3 c2 + 5 ..............

What is the answer to 8-x=3x

Andrew [12]

Move the 8 over
-x=3x-8
Move the 3x over
-x-3x=8
-4x=8
Divide by -4
x=-2

8 0

3 years ago

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Acar can travel 25 miles per gallon. Approximately how many gallons of fuel will the car need to travel 30

FrozenT [24]

Answer:

The gallons of fuel car need to travel 30 km is 0.75 approximately .

Step-by-step explanation:

Given:

The car can travel 25 miles per gallon. (1 mile = 1.6 km)

Now, we need to convert 25 miles into km .

25 miles = 25 × 1.6 km

= 40 km

So, the car can travel 40 km per gallon.

Then, we find out in 1 km how many gallons are used:

$40 km = 1 gallons$

$1\ km = \frac{1}{40}\ gallons$

$1\ km = 0.025\ gallons$

Now, we find out how much gallons of fuel will the car need to travel 30 km:

Gallons of fuel the car need to travel 30 km = $30\times 0.025$

= $0.75 gallons$ .

Therefore, the gallons of fuel car need to travel 30 km is 0.75 approximately.

6 0

3 years ago

Can someone please answer the following questions step by step?

Juliette [100K]

I can’t really explain but this is my working step by step, hope u can understand and see if it helps you :)

4 0

3 years ago

A set of 12 windup toys costs $9. What is the cost per windup toy?

-BARSIC- [3]

Answer:

0.75

Step-by-step explanation:

9 ÷ 12 = 0.75

hope this helps...

4 0

3 years ago

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X is the sum of y consecutive integers. w is the sum of z consecutive integers. If y = 2z, and y and z are both positive integer

zlopas [31]

Answer:

The answer is C.

Step-by-step explanation:

The key to solve the problem is the equation given

y = 2z which means that y is always an even number.

For example:

let z = 1; y = 2(1) y = 2;

let z = 2; y = 2(2) y = 4;

let z = 3; y = 2(3) y = 6;

And we know that for any set of consecutive integers with an even number of terms, the sum of the integers is never a multiple of the number of terms.

For example:

Set of numbers: [1,2,3,4,5,6] ;

Sum of the set: 1+2+3+4+5+6 = 21 ;

Number of terms of the set: 6;

Therefore, 21 is not a multiple of 6.

But for any set of consecutive integers with an odd number of terms, the sum of the integers is always a multiple of the number of terms.

For example:

Set of numbers: [1,2,3,4,5,] ;

Sum of the set: 1+2+3+4+5 = 15 ;

Number of terms of the set: 5;

Therefore, 15 is a multiple of 5.

And that's why we know that if y is always an even number (y = 2z), the sum of the consecutive integers (x) is not a multiple of y, therefore x/y cannot be an integer.

8 0

4 years ago