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Bad White [126]
3 years ago
10

Is the sum of 4.2 and square root of 2 rational or irrational

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
3 0
The sum of an irrational number and a rational one
is always irrational.  There's nothing you can add to
an irrational number to make it behave better.

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A pecan pie is being served for dessert. One piece of pie has an arc length of 7.85 in. It has been cut into 8 equal pieces. Wha
grin007 [14]

Answer:

The radius of the pie is 6.17 in.

Step-by-step explanation:

The formula for arc length as a function of radius is

s = r·Ф, where Ф is the central angle in radians.

Here we know that the arc length is 7.85 in.  Assuming that the whole pie has been cut into 8 equal pieces, the central angle of one such piece is

2π / 8, or π /4 (radians).

thus, s = r·Ф, solved for r, is r = s/Ф

and in this instance r = (7.85 in)/(π/4).  Evaluating this, we get:

                                 r = 6.17 in

The radius of the pie is 6.17 in.

8 0
3 years ago
What is the area of the figure? A) 18 in2 B) 24 in2 C) 30 in2 D) 36 in2
Annette [7]
Hello!

You need to separate this into two rectangles and add their areas together

first rectangle

3 * 6 = 18

rectangle 2

3 * 2 = 6

18 + 6 = 24

the answer is 24in squared


5 0
3 years ago
Read 2 more answers
Solve for x. 9x - 18 = 7x + 30
viva [34]

Answer: x = 24

Step-by-step explanation:

9x - 18 = 7x + 30

9x - 7x = 30 + 18

2x = 48

x = 48/2 = 24

3 0
3 years ago
Helppppp! what is 2+6????
yaroslaw [1]

Answer:

8...I want these points lol

Step-by-step explanation:

3 0
3 years ago
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.000000759 scientific notation
lara31 [8.8K]

Answer

7.59 x 10⁻⁷

Step-by-step explanation:

8 0
3 years ago
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