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otez555 [7]
3 years ago
12

PLZ HELP! MATH >__<

Mathematics
2 answers:
harkovskaia [24]3 years ago
7 0
My answer would be 276m2 
k12
Sunny_sXe [5.5K]3 years ago
3 0
Lateral area = surface area <em>not including</em> the bases.

To find this area we just need to add up the area of all of those sides.

The 2 bases are the same area and defined by the length and width.

That leaves the 2 sides defined by length and height,
plus the 2 defined by width and height.

Of course, to find the area of a rectangle, we just multiply together its two dimensions.
length × height = 14 × 6 = 84
width × height = 9 × 6 = 54

2 × 84 + 2 × 54 = 276 m²
You might be interested in
25% of 614 is what number. Round your answer to the nearest tenth
mihalych1998 [28]

Answer:

153.5

Step-by-step explanation:

Given 25% of 614

That’s 25% /100% x 614

0.25 x 614

153.5

3 0
3 years ago
The sides of a triangle are x,x+1,2x-1 and its area is x root 10. Find the value of x
Marianna [84]
<span>You can use Heron's formula to solve this problem.

</span>A= \sqrt{s(s-a)(s-b)(s-c)} , where A is the area; a,b,с are the sides;  s<span> is the </span>semiperimeter<span> of the triangle
</span>s= \frac{a+b+c}{2}

<span>According to conditions:
</span>a = x
b = x+1
с = 2x-1

<span>Calculate the semiperimeter:
</span>s= \frac{x+x+1+2x-1}{2} = \frac{4x}{2}=2x

<span>Now we can compose and solve the equation according to Heron's formula:
</span>\sqrt{2x(2x-x)(2x-(x+1))(2x-(2x-1))}=x \sqrt{10}   \\  \sqrt{2x(x)(2x-x-1)(2x-2x+1)}=x \sqrt{10} \\  \sqrt{2x^2(x-1)(1)}=x \sqrt{10} \\  \sqrt{2x^3-2x^2}=x \sqrt{10}  \  \  \ |()^2 \\ 2x^3-2x^2=10x^2 \\ 2x^3-2x^2-10x^2=0 \\ 2x^3-12x^2=0 \ \ |:2 \\ x^3-6x^2=0 \\ x^2(x-6)=0 \\  \\ x^2=0 \\ x=0 \ \ \ \O \\ or \\ x-6=0 \\ x=6

<span>As a result, x = 6 is your answer.
 
I hope this helped.</span>
7 0
2 years ago
I need 1 and 2 please :)
Andru [333]
Number 1 might be A and number 2 might be B. I'm not sure though.
7 0
3 years ago
Find the mean of this set of numbers.
ikadub [295]
You would add them all together and then divide the answer by how many numbers are there in this case there are 6 so you would all all 6 numbers then divide by 6

So all the numbers added together is 12 so then divide 12 and 6

the mean would be 6
7 0
3 years ago
ANSWER THIS THX 60 POINTS
Alchen [17]

Answer:

B. -7 + 8n

Step-by-step explanation:

-3.5(2 + -3n) + -2.5n = 0

(2 * -3.5 + -3n * -3.5) + -2.5n = 0

(-7 + 10.5n) + -2.5n = 0

0.5n + -2.5n = 8n

-7 + 8n

6 0
3 years ago
Read 2 more answers
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