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Arte-miy333 [17]
2 years ago
8

Evaluate. {3+ [-5 (2 – 4) : 2]} •3

Mathematics
2 answers:
nata0808 [166]2 years ago
8 0

Answer:

24 so 4th answer

Step-by-step explanation:

Hope this helps

bagirrra123 [75]2 years ago
7 0

<u>Given</u><u> </u><u>info</u><u>:</u>

Evaluate,

[3 + {-5 (2 - 4) ÷ 2}].3

⇛[3 + {-5(-2) ÷ 3}].3

⇛[3 + {-5 × -2) ÷ 3}].3

Now, see in equation both minus (-) sign will cancel out. Because there is multiplication (×) sign.

Suppose -a × -b = a × b = ab. So that is reason. why minus (-) will cancel out in equation.

⇛[3 + { (5 × 2)÷3}].3

⇛[3 + {10 ÷ 3}].3

⇛[3 + {10 × 1/3}].3

⇛[3 + {10/3}]. 3

⇛3 + {10/3}×3

⇛3 + {10×3}/3

⇛3 + 30/3

⇛3 + 10

⇛13. Ans.

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Answer:

d = 14

43.96/3.14 = 14

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2 years ago
It's from the chapter : "exponents and powers"<br>i need the workings too<br>please help​
labwork [276]

Answer:

505/19

Step-by-step explanation:

Easy

so [3^3-(1/2)^(-3)*(1/19)]

simplify

3^3-8/19

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convert element to fraction

(27*19)/19-8/19

combine

(27*19-8)/19

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3 years ago
Please help me with #7
Dominik [7]

Step-by-step answer:

This is a regular heptagon, means it has 7 <em>congruent</em> sides and 7 <em>congruent </em>vertex angles.

To work with polygons, there is a very important piece of information that you must know to solve the majority of related problems.

This is:

sum of exterior angles of polygons = 360 degrees.

If you don't remember the 360 degrees, think of the sum of exterior angles of an equilateral triangle, which is 3*(180-60)=3*120=360!  It works!

For a regular heptagon, c = 360/7=51.43 degrees approx.

This means that each vertex angle measures

vertex angle = 180-c

So since 2d+the vertex angle = 360, we have

2d+(180-c)=360

solve for d:

2d=360-(180-c)=180+c

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8 0
3 years ago
What is the angular size of Mars, as seen from the Earth, when it was closest to the Earth?
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The angular size of Mars, as seen from the Earth, when it was closest to the Earth is 25 arcseconds.

<h3>What is angular size?</h3>

It should be noted that angular size is the object's apparent size as seen from an observer on Earth.

At its closest approach, the angular size of Mars is 25 arcseconds. This was known through the use of a telescope.

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1 year ago
Question
ANTONII [103]

The approximate area of the park on the grid is: E. about 40 km² to 50 km².

<h3>How to Find the Approximate Area on a Coordinate Grid?</h3>

The number of square on a coordinate grid that is covered determines the area covered. We can make an estimate by counting how many of this square on the coordinate grid that is covered, then find out the area depending on how much square area each grid represents.

In the coordinate plane given, which shows a park, we are told that each of the square on the grid equals 1 k = square kilometer.

The number of each of these squares we can find that is covered by the park on the grid is: 48 squares.

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