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Mars2501 [29]
3 years ago
8

What is the answer for (3n + 5)(3n+6)​

Mathematics
2 answers:
Rzqust [24]3 years ago
6 0

Answer:

<u>9n^2+33n+30</u>

Step-by-step explanation:

I just did the math and got this answer!!

HOPE IT HELPS!!!!

:):):):)

statuscvo [17]3 years ago
5 0

Answer:

9n^2 + 33n + 30

Step-by-step explanation:

You're looking to multiply these two binomials together, and then to simplify the result, to obtain the product.

Have you used the "FOIL" method of multiplying binomials?

That's what we'll apply here.

F:  first terms.  The product of the first terms 3n and 3n is 9n^2.

O:  outer terms.  The product of the outer terms 3n and 6 is 18n.

I:  inner terms:  15n

L:  last terms:  30

Putting this all together, we get 9n^2 + 18n + 15n + 30, or

9n^2 + 33n + 30 (this is the desired answer, the product of (3n + 5) and (3n+6)​.

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Crazy boy [7]
We are given 2 sides 18.7, 16.1 and a NON-included angle.
We have to calculate the altitude of the triangle.
altitude = 18.7 * sine (35)
altitude = 18.7 * 0.57358
altitude = <span> <span> <span> 10.725946 </span> </span> </span>
In this case, side c is greater than the altitude and is less than side a so 2 two triangles will be formed.

Source:
http://www.1728.org/trigssa.htm





3 0
3 years ago
The given line passes through the points (-1,-1) and (4.1).
ira [324]

Answer:

(-1,-1) and (4.1).

                                     1+1

slope of the line: m= ------- = 2/5

                                     4+1

the slope of the perpendicular line:  -5/2  and   point  (-1,3)

(y-3) = -5/2(x+1)

6 0
3 years ago
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GaryK [48]

Answer:

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Step-by-step explanation:

6 0
2 years ago
The length of the longer leg of a right triangle is 19ft more than five times the length of the shorter leg. the length of the h
dangina [55]
Let x represent the length of the shorter leg.

Longer leg: 5x +19
Hypotenuse: 5x +20

Pythagorean theorem:
.. x^2 +(5x +19)^2 = (5x +20)^2
.. x^2 +25x^2 +190x +19^2 = 25x^2 +200x +20^2 . . . . . . eliminate parentheses
.. x^2 -10x -39 = 0
.. (x -13)(x +3) = 0
.. x = 13 . . . . . . . . . . leg lengths must be positive

The side length of the triangle are 13, 84, 85 feet.
7 0
3 years ago
Can someone help me with this ?
romanna [79]

Answer:

\large\boxed{S.A.=467\ in^2}

Step-by-step explanation:

We have two triangles and three rectangles.

The formula of an area of a triangle:

A_{triangle}=\dfrac{bh}{2}

b - base

h - height

The formula of an area of a rectangle:

A_{rectangle}=lw

l - length

w - width

TRIANGLE:

b = 11 in, h = 7 in

A_1=\dfrac{(11)(7)}{2}=\dfrac{77}{2}=37.5\ in^2

RECTANGLE 1:

l = 11 in, w = 14 in

A_2=(11)(14)=154\ in^2

RECTANGLE 2:

l = 9 in, w = 14 in

A_3=(9)(14)=126\ in^2

RECTANGLE 3:

l = 8 in, w = 14 in

A_4=(8)(14)=112\ in^2

The Surface Area:

S.A.=2A_1+A_2+A_3+A_4

Substitute:

S.A.=2(37.5)+154+126+112=467\ in^2

6 0
3 years ago
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