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3 years ago

Please I need help of this one :)

Mathematics

1 answer:

Harlamova29_29 [7]3 years ago

5 0

Answer:

128.605 m²

Step-by-step explanation:

Find the areas of the top triangle, and the bottom triangle and add them together.

The top triangle consists of 2 smaller triangles. Look at the larger one, the height is 4.93 and the base is 17. The area is...

A = (1/2)(17)(4.93)

A = 41.905 m²

The bottom triangle consists of 2 smaller triangles. Look at the larger one, the height is 10.2 and the base is 17. The area is...

A = (1/2)(17)(10.2)

A = 86.7 m²

The total area is 41.905 m² + 86.7 m² = 128.605 m²

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Factor completely and then place the factor. in the proper location on the grid (4x-+3)(-2x-5)

Ivahew [28]

Yay, love these ones.

First of all, (4x-+3)(-2x-5) is the same as (4x-3)(-2x-5)
So the method for solving these can be remembered by FOIL.
F= Firsts O= Outsides I= Insides L= Lasts

In other words everything is multiplied by everything, for example:
4x * -2x and -3 * -5 is the firsts of the brackets multiplied and last of the brackets mulitplied

4x * -5 and 3 * -2x is the outsides of the brackets multiplied and the insides of the brackets multiplied

The SUM of FOIL is then added:
4x*-2x = -8x^2
-3*-5= 15
4x*-5=-20x
3*-2x=-6x
-8x^2 -20x -6x + 15 = 0
-8x^2 -26x + 15 = 0

So the factored of (4x-3)(-2x-5) = -8x^2 -26x + 15 = 0

So then you graph that equation on your given grid

8 0

3 years ago

Complete the table using the rule y=x-1/4

IgorLugansk [536]

If y=X-1/4 then this is what your chart will look like:

Y = X
1 = 0.75
2 = 1.75
3 = 2.75
4 = 3.75
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3 years ago

La respuesta del ejercicio numero 7

andriy [413]

In a math book??? Need more explanation

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3 years ago

Second to last question, Find I 50 points

ahrayia [7]

Since this is a right triangle, we can use one of the three main trigonometric functions: sine, cosine, or tangent.

Remember: SOH-CAH-TOA

Looking from angle I, we know the opposite side and the hypotenuse. Therefore, we should use sine.

sin(I) = $\frac{\sqrt{39}}{\sqrt{51}}$

To solve, you can use your calculator and the inverse sine function (sin^-1).

I = sin^-1( $\frac{\sqrt{39}}{\sqrt{51}}$ )

I = 61 degrees

Hope this helps!

5 0

3 years ago

Read 2 more answers

Simplest form of ratio 24:36:60

kumpel [21]

Answer:

2:3:5

Step-by-step explanation:

24:36:60

1) Find the greatest common factor

24 ⇒ 1, 2, 3, 4, 6, 8, 12, 24

36 ⇒ 1, 2, 3, 4, 6, 9, 12, 18, 36

60 ⇒ 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

Therefore, the greatest common factor is 12.

2) Divide all values by 12

24 ÷ 12 = 2

36 ÷ 12 = 3

60 ÷ 12 = 5

Therefore, the simplified form of the ratio is 2:3:5.

I hope this helps!

7 0

3 years ago