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3 years ago

Simplify the expression: 52 – [30 – 2(7 – x)].

1 answer:

6 0

Let's simplify step-by-step.52−(30−2(7−x))

Distribute the Negative Sign:=52+−1(30−2(7−x))=52+(−1)(30)+−1(−2(7−x))=52+−30+−2x+14

Distribute:=52+−30+−2x+14

Combine Like Terms:=52+−30+−2x+14=(−2x)+(52+−30+14)=−2x+36

Answer:=−2x+36

Good luck mate :P

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The sum of the interior angles of a polygon is (n-2)180

aleksandrvk [35]

Answer:

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Step-by-step explanation:

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3 years ago

I need an answer to 2. a and b and 3. a

Katen [24]

The square of an odd number:

We're to conjecture, not do algebra, apparently. 1²=1, 3²=9, 5²=25, 7²=49, ...

We conjecture the square of an odd number is odd.

The product of two evens and an odd:

Again, we'll run some examples.

(2)(2)(1)=4

(2)(4)(3)=24

(4)(6)(5) =120

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How about

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4 years ago

Given a soda can with a volume of 36 and a diameter of 4, what is the volume of a cone that fits perfectly inside the soda can?

Tomtit [17]

First we need to find the heigh of the soda can be rearanging the volume formula, $V = pi * r^2* h$ . We can make that $h = \frac{V}{pi * r^2}$ We know that V is 36 and radius is half of the diameter, so radius is 2. $h = \frac{36}{pi * 2^2}$
$h = \frac{36}{pi * 4}$
h = 2.87

Now, we can use the height to figure out the volume of a cone. The volume of a cone is $V = pi * r^2 * \frac{h}{3}$
R is 2 again and h is 2.87
$V = pi * 2^2 * \frac{2.87}{3}$
$pi * 4 * .96$
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4 years ago

Read 2 more answers

A cube measures 3.0 CM on each side and has a mass of 25g. What is the density?

Oxana [17]

Answer:

D ≈ 0.925926 g/cm³

Step-by-step explanation:

Density = Mass / Volume

Step 1: Define

M = 25 g

V = (3 cm)³ = 27 cm³

D = ?

Step 2: Substitute and Evaluate for Density

D = 25g / 27 cm³

D = 25/27 g/cm³

D ≈ 0.925926 g/cm³

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