Which of the following shows the correct order for -1 2/5 , (-1)2 , -1.4 , and (1/2)2?

1 answer:

5 0

The order of these numbers from smallest to largest is:

(-1)2, -1 2/5, -1.4, (1/2)2

-1 2/5 and -1.4 are technically the same, though.

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Find the circumference and the area Of the circle with diameter 4yd

denis23 [38]

Answer:

circumference: 12.56 yd
area: 12.56 yd²

Step-by-step explanation:

The formula for circumference is ...

C = πd

C = (3.14)(4 yd) = 12.56 yd . . . . . . . . fill in the numbers; do the arithmetic

The circumference is 12.56 yd.

Since the diameter is 4 yd, the radius is half that, or 2 yd. The formula for the area is ...

A = πr²

Fill in the numbers and do the arithmetic.

A = (3.14)(2 yd)² = 12.56 yd²

The area is 12.56 yd².

_____

<em>Comment on units</em>

In problems such as these, I find it is often useful to keep the units with the numbers. The units can be treated like any variable: multiplied, divided, measures combined by addition or subtraction of "like units".

Just as (2a)² = 2²·a² = 4a², so does (2 yd)² = 2²·yd² = 4 yd². You can be sure that if the units of the problem don't make sense, there is an error somewhere.

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3 years ago

WILL GIVE BRAINLIEST

GalinKa [24]

Answer:

Step-by-step explanation:

A p e x :3

5 0

3 years ago

Read 2 more answers

Please help!

Nitella [24]

$x = r cos \theta \\ \\ y = r sin \theta$

$x = (-2) cos (\pi/3) = (-2)(\frac{1}{2}) =-1 \\ \\ y=(-2) sin (\pi/3) = (-2)(\frac{\sqrt{3}}{2})=-\sqrt{3}$

The rectangular coordinates are:
$(-1,-\sqrt{3})$

4 0

4 years ago

Which polynomial expression represents a sum of cubes? (6 – s)(s2 + 6s + 36) (6 + s)(s2 – 6s – 36) (6 + s)(s2 – 6s + 36) (6 + s)

Nadusha1986 [10]

Answer:

Option 3 is correct that is $(6+s)(s^2-6s+36)$