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4 years ago

I don't understand this one.

Mathematics

1 answer:

Artemon [7]4 years ago

7 0

Answer:

C. 27 feet to the nearest foot.

Step-by-step explanation:

In a 45-45-90 triangle the 2 legs ( the base and the height) are equal in length.

So the area = 1/2 * base * height

= 1/2 h^2 = 32

h^2 = 32 / 1/2 = 64

h = 8 feet.

That is both legs are 8 feet long.

So the amount of fencing needed = the perimeter

= 2*8 + H where H is the hypotenuse.

As it is a 45-45-90 triangle H = √ * 8 = 11.3 feet.

The perimeter = 16 + 11.3

= 27 feet to the nearest foot.

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Alex787 [66]

a=6, b=2

Step-by-step explanation:

Use simplification into substitution
$\frac{a}{3} =1+\frac{2}{b}$

$a=3(1+\frac{2}{b})$

$a=3+\frac{6}{b}$

We can now plug this value of a into the second equation.

$\frac{3+\frac{6}{b} }{4} +\frac{3}{b} =3$

Get rid of fractions in the numerators and/or denominators

$\frac{3b+6}{4b} +\frac{3}{b} =3$

Then we can match the denominators

$\frac{3b+6}{4b} +\frac{12}{4b} =3$

Combine

$\frac{3b+18}{4b} =3$

Divide both sides by three

$\frac{b+6}{4b} =1$

Get rid of fractions

$b+6=4b$

Single out b

$6=3b$

$b=2$

Now we can plug it into the equation

$\frac{a}{3} -\frac{2}{2} =1$

$\frac{a}{3} =2$

$a=6$

Now we can check it;

$\frac{6}{3} -\frac{2}{2} =1$

↑CORRECT

$\frac{6}{4} +\frac{3}{2} =3$

↑CORRECT

4 0

2 years ago

Please hurry attachment below will Brainly if answer correctly 30 POINTS

Rzqust [24]

Put everything into a calculator to change to decimal form to make things easier:
27/5=5.4
5.36=5.36
5 3/5=5.6
33/6=5.5
So now in order to least to greatest it would be:
5.36, 27/5, 33/6, 5 3/5

6 0

3 years ago

The converse of the following statement is true: “If two angles are corresponding angles, then they are congruent.”

Inga [223]

I say it would be true

4 0

4 years ago

Ahmad lost 50 dollars from his pocket. Write a signed number to represent this change.

IRINA_888 [86]

Answer:

-50

Step-by-step explanation:

it could be X-50=?

8 0

3 years ago

Find the value of y?

spin [16.1K]

Answer:

value of y = 95°

Step-by-step explanation:

=》128° + 72° + 65° + y = 360°

( because sum of all angles

of a triangle = 360° )

=》265° + y = 360°

=》y = 360° - 265°

=》y = 95°

i hope you got it.

3 0

3 years ago