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2 years ago

9

I NEED HELP ASAP PLEASE LOOK AT THE PICTURE

1 answer:

saveliy_v [14]2 years ago

5 0

Answer:

385.6 m²

Step-by-step explanation:

The surface area of a prism is the sum of the surface areas of each of the faces. A triangular prism has two triangular faces and three rectangular faces. The areas of the rectangular faces will have a total equal to the perimeter of the triangle times the height of the prism.

__

Area = 2×triangle area + lateral area

= 2(1/2)(bh) +PH

= (16 m)(5.6 m) + (6 +15 +16 m)(8 m)

= 89.6 m² +296 m² = 385.6 m²

The surface area of the triangular prism is 385.6 square meters.

_____

<em>Additional comment</em>

In the above formula, we have used ...

b = triangle base (16 m)
h = triangle height (5.6 m)
P = triangle perimeter (6+15+16) m
H = prism height (8 m)

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Which polynomial represents twice the sum of -5x^2-x+6 and 7x^2+x-1?

elena-14-01-66 [18.8K]

The polynomial that represent twice the sum of $-5x^{2}$ - x +6 and 7 $x^{2}$ + x -1 is : 4 $x^{2}$ +10

<h3>What is a polynomial?</h3>

A polynomial is any algebraic expression that has the least value of the power of its variable as 2.

When the highest value of the polynomial is 2, it is a called a quadratic expression.

Analysis:

2( -5 $x^{2}$ -x +6 + 7 $x^{2}$ +x -1)

2( 2 $x^{2}$ + 5) =

4 $x^{2}$ + 10

In conclusion, the polynomial that represents the above expressions is 4 $x^{2}$ + 10

Learn more about polynomials: brainly.com/question/2833285

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7 0

2 years ago

Find the first term of the arithmetic sequence in which a38= -5 and the common difference is -2.9

mestny [16]

Answer:

102.3

Step-by-step explanation:

a_38 = -5

difference d= -2.9

We use general formula

$a_n = a_1 + (n-1)d$

WE make the formula for a_38 th term

Plug in 38 for n

$a_{38} = a_1 + (38-1)d$

Now plug in -2.9 for d and -5 for a_38

$-5 = a_1 + (38-1)(-2.9)$

$-5 = a_1 - 107.3$

Now add 107.3 on both sides

102.3 = a_1

option A is correct

3 0

3 years ago

Read 2 more answers

5.) what is the number symbol of four is to eight

zalisa [80]

Answer:

4:8

Step-by-step explanation:

I think

7 0

3 years ago

What is the range of the function shown in the graph below? answer type: interval, all real values except one, all real values e

Sever21 [200]

Answer:

Hey there!

The range is the possible y values, so the range of this graph would be all real numbers less than or equal to -6.

Let me know if this helps :)

6 0

3 years ago

Read 2 more answers

Nalia worked 3.5 hours more than lisa together they worked a total of 18 hours lisa worked h hours

andre [41]

Answer:

7.25 and 10.75 Hours

Step-by-step explanation:

Total hours Nalia and Lisa worked = 18 Hours

Nalia worked 3.5 hours then Lisa which is $h$ hours

⇒ $h + (h + 3.5) = 18$

$2h + 3.5 = 18\\2h = 18 - 3.5\\2h = 14.5\\h = \frac{14.5}{2} \\h = 7.25$

Lisa has worked for 7.25 hours

Nalia has worked for = 7.25 + 3.5 = 10.75 hours

3 0

4 years ago