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tiny-mole [99]
3 years ago
10

Let a and b be irrational numbers. Is a•b rational or irrational

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
6 0

Answer:

irrational

Step-by-step explanation:

when you multiply a irrational number by a rational number you dont lose the properties of an irrational number

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2 brothers are 1m 60 cm and 1m 44cm tall. What is their ratio of their height​
miss Akunina [59]

Answer: 10:9

Step-by-step explanation:

brother 1-   1m 60cm

brother 2-  1m 44cm

_________________________________________________________

the ratio would be brother 1 : brother 2 => 1m 60cm : 1m 44cm

_________________________________________________________

convert both the values to cm

1m = 100cm

brother 1 would be 100cm + 60cm or 160cm

brother 2 would be 100cm + 44cm or 144cm

_________________________________________________________

\frac{160}{144} = \frac{10}{9} when simplified

the ratio of brother 1 to brother 2 would be 10:9

5 0
3 years ago
The average fine for entering a national Forest wilderness without a permit increased from $65 to $78. What rate of increase is
andrezito [222]

20%

A change from 65 to 78 represents a positive change (increase) of 20%

Use the formula found below to find the percent change by replacing the given values:

Percent change = [(New - Old ) / |Old|] x 100%


3 0
3 years ago
Read 2 more answers
Michelle kicks a soccer ball up into the air from the ground. The graph represents the height of the ball, in feet, as a functio
marusya05 [52]

Answer: domain: 0 ≤ x ≤ 8

Step-by-step explanation:

Domain is an independent variable with a minimum and a maximum value. Or the starting point (value) to the end point (value)

The time taken by the ball is from 0 to 8 seconds

The domain of the function represented by the graph will be from the starting time of the ball to the end time. Therefore, In this case, domain will be

0 ≤ x ≤ 8

7 0
3 years ago
Read 2 more answers
Rewrite the fraction in simplest form. 62/70
Ostrovityanka [42]
The answer is 31/35
Hope it helps!
8 0
3 years ago
Complete the description of the piecewise function graphed below. Use interval notation to indicate intervals.
Gemiola [76]

Answer:

{ -2 if x ∈ -4 < x < -3

{ -5 if x ∈ -3 ≤ x < 2

[ 5 if x ∈ 2 ≤ x < 5    

Step-by-step explanation:

From the graph, we have;

{ -2 if x ∈ -4 < x < -3

For the next inequality line at y = -5, we have;

1) The inequality line, starts with an open circle on the left at x = -3, which is equivalent to less than or equal to symbol, ≤ as -3 ≤ x because the point x =-3 is the left boundary.  The inequality line extends to the point x = 2, where we have a closed circle (on the right), which is equivalent to a x ≤ 2 with the 2 on the right hand side because, the 2 is the right boundary of the inequality

2) The inequality can be summarized as starting from x = -3 extends to x = 2

3) As stated in point 1) the point x = 3, we have -3 ≤ x and at point x = 2, we have x ≤ 3 which can be combined as  -3 ≤ x < 2, to give;

{ -5 if x ∈ -3 ≤ x < 2

For the next inequality line at y = 5, we have;

1) The inequality line, starts with an open circle on the left at x = 2, which is equivalent to less than or equal to symbol, ≤ as 2 ≤ x because the point x =2 is the left boundary.  The inequality line extends to the right to reach point x = 5, where we have a closed circle (on the right), which is equivalent to a x ≤ 5 inequality, with the 5 on the right hand side because, the 5 is the right boundary of the inequality

2) The inequality can be summarized as starting from x = 2 extends to x = 5

3) As stated in point 1) the point x = 2, we have 2 ≤ x and at point x = 5, we have x ≤ 5 which can be combined as  2 ≤ x < 5, to give;

[ 5 if x ∈ 2 ≤ x < 5.

7 0
3 years ago
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