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tangare [24]
3 years ago
15

Determine the x for x^2=81

Mathematics
1 answer:
andrezito [222]3 years ago
8 0

Answer:

X=9

Step-by-step explanation:

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This is correct? I need help please :(
Leto [7]

Answer:

well, we only no that

2l + 2w is 80

(lengths and widths on all 4 sides

and that w * l is A

so the function should be w times what's left for l, but also expressed by something with w

2l + 2w = 80 | -2w

2l = 80 -2w | devide by 2

l = 80 - w

now we can substitute l in

A = w * l

so that we only need w's

A(w) = w * (80-w)

for any w it will give us the area, makes only sense for 0<w<80

8 0
2 years ago
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In the figure, a∥e , m∥n , and m∠2 = 112°.
MatroZZZ [7]

Answer

Find out the  m∠6  .

To prove

As given

a∥e , m∥n , and m∠2 = 112°.

As  m∥n

a is the transversal (A line that cuts across two or more (usually parallel) lines is called transverasl.)

Thus

∠ 2 = ∠3 ( Corresponding angle property )

∠3 = 112°

Also

a∥e and m is transversal .

∠ 3 = ∠6 = 112 ° ( Corresponding angle property )

Therefore

∠6 = 112°

3 0
3 years ago
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A man buys a jacket birr 300 before VAT what is the VAT and the total cost?​
Novosadov [1.4K]
  • Base price=300
  • Let VAT be x%

Now

  • Total VAT=0.x(300)

Total cost:-

  • 300+300(0.x)
7 0
2 years ago
34. Find the surface area for the following rectangular prism ​
Taya2010 [7]

\huge\fbox\green{ANSWER}

Surface Area = 2×(8.25×1.5 + 8.25×3 + 1.5×3) = 83.25 centimeters^2

\mathsf \blue{83.25 {cm}^{2} }

4 0
2 years ago
What is the sales tax on a suit priced at $180 if the sales tax rate is 6.9%?
Jet001 [13]

The sales tax would be $12.42

6 0
3 years ago
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