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Julli [10]
2 years ago
9

Write a rational number in fraction form that is equivalent to 2.5 (repeating)

Mathematics
2 answers:
dmitriy555 [2]2 years ago
5 0

Answer: 2 1/2 is the right answer

Step-by-step explanation:

Shtirlitz [24]2 years ago
3 0

Answer:

That would be 2/4 equivalent to 1/2 (2.5)

Step-by-step explanation:

Sorry if I'm wrong

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3x²+8x+4 how to solve this
Lunna [17]
3x² + 8x + 4
First, i divide the equation into two parenthesis, so that the first parts of both multiply to make the first term, 3x². 3x * x = 3x²
(3x  +    )(x +  )
Then I find two numbers that multiply to make 4, which are 1 and 4, or 2 and 2. 
Our options are: 
(3x + 1)(x + 4) 
(3x + 4)(x + 1)
(3x + 2)(3x +2)

To figure out which one to use, I'm just going to FOIL them all. 
(3x + 1)(x + 4)  = 3x² + 1x + 12x + 4 = 3x² + 13x + 4
(3x + 4)(x + 1) = 3x² + 4x + 3x + 4 = 3x² + 7x + 4
(3x + 2)(x +2) = 3x² + 2x + 6x + 4 = 3x² + 8x + 4

The factored form is: 
(3x + 2)(x + 2) 

To solve for the roots ( where the graph crosses the x axis, where y = 0) we set the equation equal to 0:

(3x + 2)(x + 2) = 0
The zero product property says that anything times 0 is 0, so we set each individual part equal to 0 and solve for the two roots. 

3x + 2 = 0
3x = -2
x = -2/3

x + 2 = 0 
x = -2


7 0
3 years ago
Read 2 more answers
The temperature outside is currently 10°F. It will fall at a constant rate of 3°F per hour. Which temperature will it be in 4 ho
Elenna [48]

Answer:

The temperature in 4 hours = -2 °F

Thus, option (D) is true.

Step-by-step explanation:

We know that the slope-intercept form of the line equation is

y = mx+b

where m is the rate of change or slope and b is the y-intercept

  • Let 'y' be the temperature
  • Let 'x' be the time of the temperature in the hour

Given that the current temperature outside = 10°F.

Thus, the y-intercept = b = 10°F

Given that as the day went on, It will fall at a constant rate of 3°F per hour.

Thus, the slope or rate of change = -3°F

(The rate of change or slope is -3 because the temperature is reducing)

Thus, the rate of change = slope = m = -3

Thus, substituting m = -3 and b = 10 in the equation

y = mx+b

y = -3x + 10

Now, substituting x = 4 to determine the temperature after 4 hours.

y = -3(4) + 10

y = -12 + 12

y = -2 °F

Therefore, the temperature in 4 hours = -2 °F

Thus, option (D) is true.

5 0
3 years ago
Jason’s budget is shown in the circle graph below. His total monthly budget is $3,000. How much does Jason spend on groceries? A
bonufazy [111]

Answer:

D.$750

Step-by-step explanation:

3000 x 0.25 = 750

8 0
3 years ago
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Please help i’ll give brainliest
Furkat [3]

Answer:

The answer is A, a total of 12 students spend 31 or more hours online per month.

Step-by-step explanation:

From the hours of 31 to 65 there are twelve students.

7 0
3 years ago
Can somebody tell me what the answer to y-13=8 is? Please and thank you.
makvit [3.9K]

Answer:

Y=21

Step-by-step explanation:

add 13 on both sides you get Y=21

4 0
2 years ago
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