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prisoha [69]
3 years ago
14

The perimeter of triangle ABC is 36 cm. Its sides are proportional to the numbers 3, 4 and 5. Find the sides of the triangle.

Mathematics
1 answer:
DiKsa [7]3 years ago
5 0

Answer:

3x+4x+5x=36

12x=36

x=36/12

x=3

3x=3 into 3=9

4x=4 into 3=12

5x=5 into 3=15

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What can you say about the sum of consecutive odd numbers starting with 1? that is, evaluate 1, 1c3, 1c3c5, 1c3c5c7, and so on,
Mice21 [21]

Let us add consecutive odd numbers and try to find any relationship.

1. 1

2. 1+3 = 4 ( square of 2 i.e 2^{2} )

3. 1+3+5 = 9 ( 3^{2} )

4.  1+3+5+7 =  16 (4^{2} )

5. 1+3+5+7+9 = 25 (5^{2} )

6. 1+3+5+7+9+11 = 36 ( 6^{2} )

7. 1+3+5+7+9+11+13 = 49 (7^{2} )

If we notice, the sum of the consecutive odd integers in each case is equal to the square of the place where it lies. For example, the sum of numbers in seventh place is equal to 7^{2}. The sum of the numbers in the fifth line is equal to 5^{2}.

4 0
3 years ago
Seven more than 4 times a number is more than twenty-seven.
Rainbow [258]

Answer:

330

Step-by-step explanation:

this question wasn't as sepcific but my answer is 330 bc 7 more then 4 i suppose u to add? so that would be 11, so 11 times a number that is more then 27 so i picked 30, 11x30=330.

3 0
3 years ago
What is an equivalent expression of -1/2(-2x+4y
Mice21 [21]

Answer:

x−2y

Step-by-step explanation:

you meant to put a parenthesis at the end right?

7 0
3 years ago
I need help on this question
Irina18 [472]

To find the surface area of the figure , we need to add the surface area of all the faces

So the surface area of figure = Area of two lateral rectangular faces + Area of two triangular faces + area of base

hence

Surface Area of figure = 2(10*15) + 2( 1/2 * 8 * 12) + (12*15)

= 300 + 96 + 180

= 576 square feet

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7 0
3 years ago
Factor out the coefficient of the variable term.
aivan3 [116]

Given:

The expression is

\dfrac{1}{2}n-\dfrac{1}{2}

To find:

The factored form of given expression after factor out the coefficient of the variable term.

Solution:

We have,

\dfrac{1}{2}n-\dfrac{1}{2}

Here, the coefficient of variable n is \dfrac{1}{2}.

It can be written as

=\dfrac{1}{2}\times n-\dfrac{1}{2}\times 1

Taking out \dfrac{1}{2} as common factor, we get

=\dfrac{1}{2}(n-1)

Therefore, the factored from of given expression is \dfrac{1}{2}(n-1).

6 0
2 years ago
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