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3 years ago

Which shows a rational number plotted correctly on a number line?

Mathematics

2 answers:

mr Goodwill [35]3 years ago

5 0

Answer:

Step-by-step explanation:

Trust me on this, also can I have brainiest please?

Hope you do well! :D

viva [34]3 years ago

4 0

Answer:

A number line going from negative 20 to negative 10 in increments of 2. There are 4 equal spaces between each number. Negative StartFraction 21 Over 2 EndFraction is plotted on the mark 1 space to the left of negative 10.

Step-by-step explanation:

A number line going from negative 8 to positive 4 in increments of 2. There are 4 equal spaces between each number. Negative 3.5 is plotted on the mark 1 space to the left of 4.

Incorrect. - 3.5>-4 and should be to the right of -4

A number line going from negative 20 to negative 10 in increments of 2. There are 4 equal spaces between each number. Negative StartFraction 21 Over 2 EndFraction is plotted on the mark 1 space to the left of negative 10.

Correct. -21/2 = -10.5 < -10 is one space to the left of -10

A number line going from negative 10 to positive 4 in increments of 2. There are 4 equal spaces between each number. Negative StartFraction 7 Over 2 EndFraction is plotted on the mark labeled negative 6.

Incorrect. -7/2 =-3.5 > -4 should be to the left of -4.

A number line going from negative 2 to positive 8 in increments of 2. StartFraction 9 Over 2 EndFraction is plotted on the mark 1 space to the left of 4.

Incorrect. 9/2 = 4.5 > 4 should be to the right of 4.

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Write an equation based on the table below

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Y= 15(x) should be your equation based on the table below

7 0

3 years ago

the formula F=9/5C + 32 changes a temperature reading from the Celsius scale C to the Fahrenheit scale F. What is the temperatur

Free_Kalibri [48]

$F=\dfrac{9}{5}C+32\\\\C=10\\\\subtitute\\\\F=\dfrac{9}{5}\cdot10+32=9\cdot2+32=18+32=50\\\\Answer:\boxed{10^oC=50^oF}$

8 0

3 years ago

Flying against the wind, an airplane travels 4000 kilometers in 5 hours. Flying with the wind, the same plane travels 5040 kilom

andriy [413]

Answer:the plane in still air is 904 km/h

the rate of the wind is 104 km/h

Step-by-step explanation:

Let x represent the rate or speed of the plane in still air.

Let y represent the rate or speed of the wind.

Flying against the wind, an airplane travels 4000 kilometers in 5 hours. This means that the total speed of the airplane would be (x - y) km/h

Distance = speed × time

Therefore

4000 = 5(x - y)

4000 = 5x - 5y - - - - - - - - -1

Flying with the wind, the same plane travels 5040 kilometers in 4 hours. This means that the total speed of the airplane would be (x + y) km/h. Therefore,

5040 = 4(x + y)

5040 = 4x + 4y - - - - - - - - - 2

Multiplying equation 1 by 4 and equation 2 by 5, it becomes

16000 = 20x - 20y

20160 = 20x + 20y

Subtracting, it becomes

- 4160 = - 40y

y = - 4160/-40

y = 104

Substituting y = 104 into equation 1, it becomes

4000 = 5x - 5 × 104

4000 = 5x - 520

5x = 4000 + 520

5x = 4520

x = 4520/5 = 904

7 0

3 years ago

5|2x - 3| + 4 = 9 How do you solve this

agasfer [191]

Answer:

x = 2, or x = -1

Step-by-step explanation:

If 2x - 3 is inside the parenthesis (), then the value of x is 2.

If 2x - 3 is inside the absolute value sign, then the value of x will probably be -1.

Solution 1

(10x-15) + 4 = 9

10x -11 = 9

10x = 20 -> x = 2

Solution 2 (Not 100% sure)

|10x -15| +4 = 9

10x + 15 +4 = 9

10x + 19 = 9

10x = -10 -> x = -1

Please correct me if I'm wrong.

3 0

3 years ago

A number with one or more digits to the right of the point

Vikki [24]

When you say right of the point do you mean the positive side? If you are it can be 1,2,3,4,5,6,7,8,9,10.........

6 0

3 years ago