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tigry1 [53]
2 years ago
6

What is the answer of this question

Mathematics
1 answer:
shepuryov [24]2 years ago
6 0

Answer:

If you need to simplify this equation, you will get 2x-2, if you are solving for the value of x, your answer will be x=6

Step-by-step explanation:

always work through your equations following the order of operations.

The first thing you will do is the multiplication of 3 and (x+4):

3 x (x+4)= 3x+12

once you have multiplied the 3 into the brackets, your equation will be:

5x-(3x+12)

Your next step will be to remove the brackets by carrying the subtraction sign over to each of the terms in the brackets, you will then have the equation:

5x-3x-12

Group your like terms (so simplify the 5x-3x) to get:

2x-12

This is the last step if the question is only asking you to simplify the expression, if you are solving for the variable then you will move one of the terms to the opposite side of the equals sign and will get:

2x=12 (since to swap the side you add 12 to both sides which cancels out the -12)

Simplify the expression by dividing both sides by 2 and you will be left with:

x=6

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5 | 79

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3 0
2 years ago
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Chloe and tino have a combined age of 48. three years ago chloe was double the age tino is now. find tinos age
jeka94

As  given Chole and Tinos age , the present age of Tino is equal to 15 years.

As given,

Let x and y be the present age of Chole and Tino. respectively.

Combined age = 48

Given condition,

x + y = 48 _______(1)

Three years ago

x - 3 = 2y

⇒x =2y +3 _______(2)

Substitute the value of x in (1),

2y+3 +y =48

⇒ 3y = 45

⇒ y = 15years

Therefore , as given Chole and Tinos age , the present age of Tino is equal to 15 years.

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5 0
1 year ago
Please help which system of inequalities is represented by the graph
lapo4ka [179]
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3 0
3 years ago
What was the approximate number of mobile cellular subscriptions per 100 people in zimbabwe in 2003?
Leona [35]
In this case, i think you just need to divide the amount of telephone subscription and divide it among 100 people

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5 0
3 years ago
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Which of the following represents a Type I error for the null and alternative hypotheses H0:μ≤$3,200 and Ha:μ>$3,200, where μ
Nuetrik [128]

Answer:

Option a) Type I error would occur if we reject null hypothesis and conclude that the average amount is greater than $3,200 when in fact the average amount is $3,200 or less.        

Step-by-step explanation:

We are given the following information in the question:

H_{0}: \mu \leq \$3,200\\H_A: \mu > \$3,200

where μ is the average amount of money in a savings account for a person aged 30 to 40.

Type I error:

  • Type I error is also known as a “false positive” and is the error of rejecting a null  hypothesis when it is actually true.
  • In other words, this is the error of accepting an  alternative hypothesis when the results can be  attributed by null hypothesis.
  • A type I error occurs during the hypothesis testing process when a null hypothesis is rejected, even though it is correct and should not be rejected.

Thus, in the above hypothesis type  error will occur when we reject the null hypothesis even when it is true.

Option a) Type I error would occur if we reject null hypothesis and conclude that the average amount is greater than $3,200 when in fact the average amount is $3,200 or less.

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3 years ago
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