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den301095 [7]
4 years ago
9

Will mark bianleast 10 ponits

Mathematics
1 answer:
Marrrta [24]4 years ago
7 0

Answer:

24 in

Step-by-step explanation:

12 sides times 2in = 24in

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Please help!! Will give brainliest! Giving lots of points!
olga nikolaevna [1]

Answer:

d) (9*3/4)+y

Step-by-step explanation:

b) 9+y*(3/4)

This expression is not equivalent, as the original expression, y+9*\frac{3}{4} , has 9 multiplied to \frac{3}{4} instead of y. You can interchange values like this when it comes to addition, but not multiplication.

c) (y+9)(3/4)

This expression is also not equivalent. After opening up the parentheses, it would again result in y being multiplied to \frac{3}{4}.

(y+9)(3/4)\\= y(3/4)+9(3/4)

d) (9*3/4)+y

This expression is equivalent, as 9 and \frac{3}{4} are still being multiplied together and y is added to the product. We can actually rearrange this to look like the original expression:

(9*3/4)+y\\=y+(9*3/4)\\=y+(9*\frac{3}{4} )\\=y+9*\frac{3}{4}

I hope this helps!

3 0
4 years ago
Pythagorean Theorem with Known Legs
solniwko [45]

Answer:

\sqrt{97

Step-by-step explanation:

The Pythagorean Theorem states that if you square the two legs and take the square root of the two legs, then you get the hypotenuse.

9^2+4^2

=81+16

=97

=    \sqrt{97}

Hope it helped!

6 0
2 years ago
Read 2 more answers
Each of the three oldest children sleeps in a twin bed. They all need bed sheets. A brand of sheets is on sale for “Buy one get
kow [346]

Answer:

Step-by-step explanation:

Two sheets will cost: $27

The value of the first sheet will be $18, and since the other sheet is half off it will be half of the original value: 18 * 0.5 = 9.

Then you add the values together: 18 + 9 = 27.

Six sheets will cost: $81

For every sheet that is the original value there is a sheet that is half off. So since there are six sheets, 3 of the sheets will be $18 and three of them will be $9. We already know that 18+9=27, so just multiply that value by 3.

27*3= 81

Better deal: The second example

In the second example sheets are 30% off. 30% of 18 is $6. Subtract that value from 18 and you will get $12. In the second example one sheet is $12.

If we multiply that value by 2, we will get $24.

In the first example, two sheets costs $27, while in the second example two sheets cost $24. Since the cost is less for the second example, the second example is the better deal.

7 0
4 years ago
A square pyramid has a base with side lengths each measuring 40 inches. The pyramid is 21 inches tall, with a slant height of 29
yulyashka [42]
For solving of the area of a square pyramid, we can use the formula below:
A=a²+2a sqrt (a²/4 +h²)
where s for the slant height, r for the a/2, where a is the side length and h for the height
Substitute the values, 
A=40²+(2*40) SQRT (40²/4 +21²)
A=3920
The answer is 3920 for the area of the square pyramid.
8 0
4 years ago
Read 2 more answers
Find the percent decrease. Round to the nearest percent.
shutvik [7]

Answer:

decrease 3%

Step-by-step explanation:

sana makatulongggg

4 0
3 years ago
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