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3 years ago

Multiply by 4,subtract 5, find the input when the output is 29

Mathematics

1 answer:

Alborosie3 years ago

8 0

Answer:

17/2

Step-by-step explanation:

4x-5=29

4x=34

x=17/2

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HELP ME WITH THIS QUICK PLEASE

Vadim26 [7]

Hello how’s your day.

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4 years ago

Ms. Hawkinson is planning to take more pictures of her students. She bought 8 rolls of film and 2 camera batteries for $23.00. T

charle [14.2K]

Answer:

1 Roll = $2.50

1 Battery = $1.50

Step-by-step explanation:

From the question we know that,

8 Rolls + 2 Batteries = $23, and

6 Rolls + 2 Batteries = $18

We can subtract the two equations to obtain a third equation,

(8 Rolls + 2 Batteries) - (6 Rolls + 2 Batteries) = $23 - $18

(8 - 6) Rolls + (2 - 2) Batteries = $23 - $18

2 Rolls = $5

Divide RHS and LHS by 2, to obtain the cost of a roll,

2 Rolls / 2 = $5 / 2

1 Roll = $2.50

If one roll costs $2.50 then 6 rolls cost $15,

6 x $2.50 = $15

We plug in this value into the second equation,

$15 + 2 Batteries = $18

Subtract both sides by $15,

$15 + 2 Batteries - $15 = $18 - $15

2 Batteries = $3

Divide RHS and LHS by 2 to obtain the final answer,

2 Batteries / 2 = $3 / 2

1 Battery = $1.50

7 0

3 years ago

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Ainat [17]

Answer:

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3 years ago

Roberto Anaya and his wife plan to rent a condominium for $725 per month. They pay a $125 monthly fee for all of the maintenance

zheka24 [161]

Answer:

$1,149.75

Step-by-step explanation:

We can start this problem off by organizing the monthly and the annual expenses.

Monthly:

$725 - Condominium

$125 - Maintenance Work

Annual:

$468 - Insurance

$129 - Lost Interest

$3,000 - Utility Bills

Since we are solving for the average monthly expense, we should deal with the annual expenses first by dividing them all by 12 since there are 12 months.

$x=\frac{(468+129+3000)}{12}$

$x=\frac{3,597}{12}$

$x=299.75$

Now, we simply add 299.75 to the monthly expenses to get our answer.

$x=299.75+725+125$

$x=1,149.75$

The average monthly expense is $1,149.75.

3 0

3 years ago

David is building a rectangular fence around his garden. The short side is 15 meters and the long side is double that amount. Wh

Elenna [48]

Solution:

Note that:

Side₁ (Short side) = 15 meters
Side₂ (Longer side) = 2(15) = 30 meters
Perimeter = 2L + 2B

Substituting the values into the expression:

2L + 2B
=> 2(15) + 2(30)
=> 30 + 60
=> 90 m

The perimeter of the garden fence is 90 meters.

8 0

3 years ago