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Ronch [10]
3 years ago
6

How to solve this polynomial 4=2(x+3)​

Mathematics
2 answers:
liubo4ka [24]3 years ago
6 0

Answer: x = -1

Step-by-step explanation:

You are trying to figure out what the missing number is that will make 4

so we know that only 2 plus or multiplied by 2 can =  4

and because 2 is outside the parentheses it has to be multiplication meaning that x + 3 has to equal 2

4 = 2(x+3)​

4 = 2 ( -1 + 3)

4 = 2 (2)

2 * 2 =4

4 = 4

valentina_108 [34]3 years ago
3 0

Answer:

-1

Step-by-step explanation:

First you have to multiply 2 by the term 'x+3'. You will get 2x+6. Then you have to bring the variables and constants to opposite sides. Moving 6 to the other side makes it -6+4. That is -2. You have to divide -2 by 2 to get x. Doing that you get that x is -1.

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Jim, Carla and Tomy are members of the same family. Carla is 5 years older than Jim. Tomy is 6 years older than Carla. The sum o
Blizzard [7]

We are given these three people age below:

  • Jim's age
  • Carla's age
  • Tomy's age

We define the age of Jim as any variable, because the problem doesn't give any specific age. I will define Jim's age as x.

  • Jim's age = x

Next, Carla is 5 years older than Jim. That means if Carla is 5 years older, her age would be x+5.

  • Carla's age = x+5

Then Tomy is 6 years older than Carla. That means the age would be 6+(x+5).

  • Tomy's age = 6+(x+5)

The sum of their three ages is 31 years old. That means we add all these ages and equal to 31.

\large{x + x + 5 + 6 + x + 5 = 31}

Combine like terms and solve for x.

\large{3x + 16 = 31}  \\  \large{3x = 31 - 16} \\  \large{3x = 15} \\  \large{x = 5}

Then we substitute the value of x in ages to find these three people ages.

  • Jim's age = x = 5
  • Carla's age = x+5 = 5+5 = 10
  • Tomy's age = 6+(x+5) = 6+(5+5) = 6+10 = 16.

Answer

  • Jim's age = 5
  • Carla's age = 10
  • Tomy's age = 16
4 0
3 years ago
When using a debit card: A:There are always fees. B:Identification is always required. C:You still need to record transactions i
Komok [63]

Answer:

D.

Step-by-step explanation:

Since this isn't a credit card, there are no interests or fees on a debit card, so A is incorrect. B is also incorrect. You only need identification when you are withdrawing or depositing at a bank, but purchases made in stores or online do not need your identification. You also don't need to record transactions in your checkbook (but it is recommend to keep track of purchases). Modern day technology already records transaction history and all you need to do is access it online.

D is correct because if someone steals your PIN for your debit card, they could go to stores and use that money. You can dispute charges and report to the bank if that happens.

7 0
3 years ago
The amount Diego charges to detail an SUV is proportional to the time it takes him to detail the vehicle. Diego charges $37.50 t
prisoha [69]

Answer:

d = 15h

Step-by-step explanation:

Given

Charges\ \alpha\ Time

Represent charges with d and time with h

So:

d = \$37.50 when t = 2.50\ hours

Required

Determine the formula

Charges\ \alpha\ Time

In other words,

d\ \alpha\ h

Convert to an equation

d = k * h

Where

k = constant of proportion

Substitute values for Charges and Time

37.50 = k * 2.5

Solve for k

k = 37.50/2.50

k = 15

Substitute 15 for k in d = k * h

d = 15 * h

d = 15h

<em>The above formula models the situation</em>

8 0
3 years ago
Simplify 2x 2 - y for x = 3 and y = -2.<br><br> I got 20. Is this correct?
mina [271]

Answer: No it is in correct the answer is actually -x3 + 2x + y

Step-by-step explanation:

3 0
3 years ago
A dentist selected 16 patients at random from a population of more than 1000 patients and asked them how many times the patient
Snezhnost [94]
Well, mode is the number that occurs most, so the answer would be 7, since that is the most appearing number.
5 0
3 years ago
Read 2 more answers
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