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2 years ago

Is the difference of 18 and 3 a rational number? Explain

Mathematics

2 answers:

Zinaida [17]2 years ago

7 0

Answer:

Yes

Step-by-step explanation:

The difference of 18 and 3 is 15 which can be expressed as fraction, so its a rational number.

joja [24]2 years ago

5 0

Answer:

Yes, it is a rational number.

Step-by-step explanation:

A rational number is <u>a number that can be expressed in fractional form</u>. A rational number consists of:

Integers - they can be expressed in form of $\displaystyle{\dfrac{a}{1}}$ where a is an integer.

Fractions - obviously that they are in fractional form.
Repeating Decimals - they can be expressed in form of fractions as well.

Since the difference of 18 and 3 is 15 and the number 15 can be expressed as 15/1. Therefore, 15 or the difference of 18 and 3 is a rational number.

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6-2x=y 14+3x=y plzzz helllllllllllllllp

pashok25 [27]

Answer:

(- $\frac{8}{5}$ , $\frac{46}{5}$ )

Step-by-step explanation:

Given the2 equations

6 - 2x = y → (1)

14 + 3x = y → (2)

Substitute y = 14 + 3x into (1)

6 - 2x = 14 + 3x ( subtract 3x from both sides )

6 - 5x = 14 ( subtract 6 from both sides )

- 5x = 8 ( divide both sides by - 5 )

x = - $\frac{8}{5}$

Substitute x = - $\frac{8}{5}$ into either of the 2 equations for the corresponding value of y

Substituting into (1)

y = 6 - 2(- $\frac{8}{5}$ ) = $\frac{30}{5}$ + $\frac{16}{5}$ = $\frac{46}{5}$

solution is ( - $\frac{8}{5}$ , $\frac{46}{5}$ )

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3 years ago

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NemiM [27]

The answer is true. It does increase

6 0

3 years ago

For the function f(x)=x2-4, fins the value of f(x) when x=6

Snowcat [4.5K]

Answer:

Step-by-step explanation:

Substitute x = 6 into f(x), that is

f(6) = 6² - 4 = 36 - 4 = 32

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4 years ago

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saul85 [17]

Answer:

Step-by-step explanation:

7 0

3 years ago

In △ABC , m∠A=53°,m∠B=17°, and a=27. Find the perimeter of the triangle.

sdas [7]

Using the Law of Sines (sinA/a=sinB/b=sinC/c) and the fact that all triangles have a sum of 180° for their angles.

The third angle is C is 180-53-17=110°

27/sin53=b/sin17=c/sin110

b=27sin17/sin53, c=27sin110/sin53

And the perimeter is a+b+c so

p=27+27sin17/sin53+27sin110/sin53 units

p≈68.65 units (to nearest hundredth of a unit)

6 0

3 years ago