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2 years ago

If n > 2 then n^2 > 4. Is this true or false, if false then give a counterexample?

Mathematics

1 answer:

aalyn [17]2 years ago

5 0

Answer:

True. No matter if n is a negative or positive, it will always be less than 4.

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Y = x ^3 - 5x² +16x-80

Leokris [45]

Answer:

(x-5)(x^2+16)

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2 years ago

A pair of shoes is on sale for $66.00. This is 75% of the original price. What was the original price?

sergejj [24]

Answer:

$88.00

Step-by-step explanation:

66=3/4x

66/.75=66*4/3=88

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2 years ago

Find the area each sector. Do Not round. Part 1. NO LINKS!!<br><br>

sladkih [1.3K]

Answer:

$\textsf{Area of a sector (angle in degrees)}=\dfrac{\theta}{360 \textdegree}\pi r^2$

$\textsf{Area of a sector (angle in radians)}=\dfrac12r^2\theta$

17) Given:

$\theta$ = 240°
r = 16 ft

$\textsf{Area of a sector}=\dfrac{240}{360}\pi \cdot 16^2=\dfrac{512}{3}\pi \textsf{ ft}^2$

19) Given:

$\theta=\dfrac{3 \pi}{2}$
r = 14 cm

$\textsf{Area of a sector}=\dfrac12\cdot14^2 \cdot \dfrac{3\pi}{2}=147 \pi \textsf{ cm}^2$

21) Given:

$\theta=\dfrac{ \pi}{2}$
r = 10 mi

$\textsf{Area of a sector}=\dfrac12\cdot10^2 \cdot \dfrac{\pi}{2}=25 \pi \textsf{ mi}^2$

23) Given:

$\theta$ = 60°
r = 7 km

$\textsf{Area of a sector}=\dfrac{60}{360}\pi \cdot 7^2=\dfrac{49}{6}\pi \textsf{ km}^2$

3 0

1 year ago

How many whole weeks are in a year

SOVA2 [1]

Answer:

52 weeks are there in a year

Step-by-step explanation:

365/7

8 0

1 year ago

Jerry randomly selects 20 boxes of crayons from the shelf and finds 2 boxes with at least one broken crayon. If the shelf holds

Artist 52 [7]

If you have one per box you got 20 broken in all.

3 0

2 years ago