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2 years ago

Is -2/3 rational or irrational

Mathematics

2 answers:

yan [13]2 years ago

7 0

Answer: I think its Rational -_-

Step-by-step explanation: Chili Dogs

weqwewe [10]2 years ago

3 0

Answer:

rational, this fraction is not continuous, like pi

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2. If ¡2x+3 = i, where i = V-1, then which of the

Alexus [3.1K]

I assume you mean the equation

$i^{2x+3} = i$

Since i = √(-1), we have i⁴ = 1 and so i⁵ = i. Then 2x + 3 must be some multiple of 5.

Now just check for which of the given choices that this holds:

x = 16 ⇒ 2x + 3 = 35 (yes)

x = 11 ⇒ 2x + 3 = 25 (yes)

x = 10 ⇒ 2x + 3 = 23 (no)

x = 14 ⇒ 2x + 3 = 31 (no)

6 0

2 years ago

A figure is composed of a semicircle and a right triangle. Determine the area of the shaded region. Use 3.14 for π and round to

Aliun [14]

Answer:

$A=9.5\ ft^2$

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of triangle plus the area of semicircle

$A=\frac{1}{2}bh+\frac{1}{2}\pi r^{2}$

we have

$b=4\ ft$

Find the height of the right triangle applying the Pythagorean Theorem

$5^2=h^2+4^2$

$h^2=9\\h=3\ ft$

The radius of the semicircle is half the height of triangle

$r=3/2=1.5\ ft$

substitute in the formula

$A=\frac{1}{2}(4)(3)+\frac{1}{2}(3.14)(1.5)^{2}$

$A=6+3.5=9.5\ ft^2$

5 0

2 years ago

Read 2 more answers

Kira owes Mark $5, and Mark owes Kira $7. Which statement means the same thing?

Mice21 [21]

Answer:

mark owes Kira $2

I think

5 0

2 years ago

24 POINTS PLEASE

Alenkasestr [34]

Answer:

2.5X=1.0 try this i think

Step-by-step explanation:

tRY THAT

4 0

3 years ago

9 + 10 = 21 PLSSSSSSSSSSSSS

stellarik [79]

Answer:

9 + 10 +x= 21

x=21-19

x=2

add 2 in left hand side to get 21

6 0

3 years ago

Read 2 more answers