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Kitty [74]
3 years ago
8

Let a be an irrational number. Is 1/a rational or irrational

Mathematics
2 answers:
S_A_V [24]3 years ago
8 0

An irrational number multiplied, divided, added, or subtracted with a rational number, (or the other way around) is always irrational.

Since a is irrational, 1/a is 1/ a rational number, which will be irrational.

Marianna [84]3 years ago
7 0

<u>1 is a rational number</u> because 1 can go into 1 when dividing. <u>Irrational numbers are mostly decimals. </u>

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Write the equation of the line in slope-intercept form that goes through the points: (2,4) and (7,-1)
IgorC [24]

Answer:

y= -x+8

Step-by-step explanation:

slope int. form: y=mx+b

first, we need to find the slope (m)

the two points are (2,4) and (7,-1).

to find the slope we do (y2-y1)/(x2-x1)

doing this we get -5/5=-1

now we can plug in point (2,4) and the slope into y=mx+b

doing this we get:

4=-1(2)+b

4=-2+b

b=8

now we have the equation:

y= -x+8

7 0
2 years ago
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Find the equation of the line containing the points (0,3) and (1,8)
Tema [17]

Answer:

y = 5x + 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

To calculate m use the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 3) and (x₂, y₂ ) = (1, 8)

m = \frac{8-3}{1-0} = 5

Note the line crosses the y- axis at (0, 3) ⇒ c = 3

y = 5x + 3 ← equation in slope- intercept form

5 0
3 years ago
Which of these might describe expenses for a student? Select all that apply.
lubasha [3.4K]

Answer:

Foods and shoes thats it

Step-by-step explanation:

8 0
2 years ago
Which expression represents "6 more than x"?
zysi [14]

Answer:

x+6

Step-by-step explanation:

6 0
3 years ago
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Identifiy the initial amount a and the decay factor b in the exponential function y=5×0.5^×
xenn [34]

Answer:

a=5\\ \\b=0.5

Step-by-step explanation:

Given the exponential decay function y=5\cdot (0.5)^x

When x=0, then

y=5\cdot (0.5)^0=5\cdot 1=5,

so the initial amount is a=5

The exponential decay function y=a\cdot b^x has the decay factor b.

In your case, the eexponential decay factor is b=0.5

6 0
3 years ago
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