MATHEMATICS HIGH SCHOOL

if the sum of a number and two is doubled, the result is six less than three times the number. find the number. help me solve this, not great at math especially word problems thank you.

Answers

Answer 1
Answer: Let's call your number N.
The sum of a number and two is doubled: 2(N+2)
Six less than 3 times the number : 3N-6
The result is : =
Let's put it all together.

The answer is d)10.
Check your answer. 
The sum of a number and two is doubled: 2(10+2)=24
Six less than 3 times the number : 3(10)-6=24
Good answer.
Answer 2
Answer:

Final answer:

To solve the problem, create the equation 2(x + 2) = 3x - 6. Simplify the equation and solve for x to find the number.

Explanation:

To solve this problem, we can create an equation based on the given information. Let's call the number we're trying to find 'x'. The sum of the number and two can be written as (x + 2). Doubling this expression gives us 2(x + 2). 'Six less than three times the number' can be written as 3x - 6. So, we have the equation 2(x + 2) = 3x - 6. Solving this equation will give us the value of the number 'x'.

Expanding the equation, we get 2x + 4 = 3x - 6. Simplifying it further, we can subtract 2x from both sides to get 4 = x - 6. Adding 6 to both sides gives us 10 = x. Therefore, the number we're looking for is 10.

Learn more about Solving equations here:

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Sunday: 1 1 2 Monday: 1 Tuesday: 2 1 2 Wednesday: 1 3 4 Thursday: 2 Friday: 1 1 2 Saturday: 2 Jenna is a swimmer and trains every day. The schedule shown outlines the number of hours she trains each day. If she misses the Wednesday practice, what is the total number of hours that she trains? A) 10 1 2 hours B) 10 C) 11 3 4 hours D) 12 hours

A bowl contains 4 red marbles and 3 yellow marbles. Tim randomly draws 3 red marbles from the bowl. He replaces each marble after it is drawn. What is the probability that he draws 2 yellow and 1 red?

Answers

So,

The probability of drawing a yellow marble is (3)/(7).
Since he replaces the marble after it is drawn out, the probability of drawing another yellow is the same: (3)/(7).

The probability of drawing a red marble is (4)/(7).

In order to get the probability of drawing 2 yellow marbles and 1 red marble, given that each marble is replaced after it is drawn out, we must multiply the fractions together.

( (3)/(7) )( (3)/(7) )( (4)/(7) ) = (36)/(343)

Because the order of the marbles doesn't matter, we will multiply the probability by 3.
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Evaluate the expression for the given value of the variable(s). 5a+5b;a=-6b=-5




A. 19 B. 17 C. -11 D. 21

Answers

The given expression is 5a+5b The given values of a and b are a=-6 ,b=-5

Substituting the values of a and b in the expression we have :

5a+5b= 5(-6)+5(-5)

          = -30 -25 ( when a positive and a negative number is  multiplied the                            result is a negative number)

-30-25=-55 (same signs are added)

The answer to the expression 5a+5b when a=-6 anf b=5 is -55.

[The given options are not correct.]
The answer to what you have there is -55 using order of operations. 5 times -6 is -30. 5 times -5 is -25. add. You get -55.

In year 1, nominal GDP for the United States was $2,250 billion and in year 2 it was $2,508 billion. The GDP deflator was 72 in year 1 and 79 in year 2. Between year 1 and year 2, real GDP rose by:

Answers

Answer:

1.6%

Step-by-step explanation:

The real GDP is given by the nominal GDP divided by the GDP deflator, the real GDP for year 1 and year 2, respectively, were:

GDP_1=(2250)/(0.72)\nGDP_1=\$3,125\ billion\n\nGDP_2=(2,508)/(0.79)\nGDP_2=\$3,174.68\ billion

The percentage change in GDP is:

P=(3,174.68-3,125)/(3,125)\n P=0.016=1.6\%

Between year 1 and year 2, real GDP rose by 1.6%.

The table shows the height of a ball, ​h(t)​, after t seconds. The data can be modeled using a quadratic regression equation.Time (s) 1 2 3 4
Height (ft.) 88.7 139.9 158.9 146.1
Approximately when will the ball hit the ground?


0 s

5.2 s

6.3 s

7.5 s

Answers

Answer:

6.3 seconds

Step-by-step explanation:

Make a table

At a school supply store, binders cost $5 and pencil pouches cost $2. In one day, 42 of these items are sold for total sales of $144. Which system represents this (b represents binders and p represents pencil pouches), and how many binders were sold?

Answers

Answer:

Part 1) The system of equations that represent this situation is equal to

b+p=42  and 5b+2p=144

Part 2) 20 binders were sold

Step-by-step explanation:

Let

b -----> the number of binders sold

p -----> the number of pencil pouches sold

Part 1)

we know that

The system of equations that represent this situation is equal to

b+p=42

5b+2p=144

Part 2) How many binders were sold?

we have

b+p=42

p=42-b ------> equation A

5b+2p=144 -----> equation B

substitute equation A in equation B

5b+2(42-b)=144

5b+84-2b=144

3b=144-84

3b=60

b=20 binders

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Answers

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Answer: Control Group

This group does not get any treatment, but rather they get a placebo instead. For instance, in a medical experiment testing a new drug, the control group would get a sugar pill (the people in this group think they are getting the actual drug itself, and not a fake pill).

In contrast, the experimental group is the group that receives the actual treatment.

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