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3 years ago

N JKL, mJ = 90, mK = 30, and mL = 60. Which of the following statements about JKL are true?

Mathematics

1 answer:

Leya [2.2K]3 years ago

3 0

KL=2*JL
I tried to find the rest of the question online, and I'm not sure if radicals couldn't show up or something, but attached is an image of the rules for a 30-60-90 triangle, so hopefully this helps.

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3/2 x 63 = how many?

QveST [7]

Simplify the expression.

Exact Form:

189/2

Decimal Form:

94.5

Mixed Number Form:

94 1/2

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3 years ago

Read 2 more answers

Is it true or false! I need help fast thanks!

ladessa [460]

The answer is True.

On differentiating using product rule,

$\mathsf {\frac{d}{dx}[xe^{x}] = x(e^{x})+e^{x}(1)}$

$\mathsf {\frac{d}{dx}[xe^{x}] = e^{x}(x + 1)}$

The general form of product rule :

$\boxed {\frac{d}{dx}(ab) = a(b')+b(a')}$

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2 years ago

A square has a diagonal length of 10 ft. Draw a diagram and determine the perimeter of the square.

denpristay [2]

The perimeter of the square is: $20\sqrt2$ ft

Step-by-step explanation:

The picture is attached with the answer.

the diagonal of a square divides it into two right angled-triangles.

We can use one of the triangle to find the length of side as the diagonal will be the hypotenuse of the triangle

Let a be the side of the square, then according to Pythagoras theorem

$d^2=a^2+a^2\\(10)^2 = 2a^2\\2a^2=100$

Dividing both sides by 2

$\frac{2a^2}{2}=\frac{100}{2}\\a^2=50$

Taking Square root on both sides

$\sqrt{a^2}=\sqrt{50}\\a=\sqrt{25*2}\\a=\sqrt{5^2 * 2}\\a=5\sqrt{2}\ ft$

Now,

$P = 4a\\P = 4 * 5\sqrt{2}\\=20\sqrt{2}\ ft$

Hence,

The perimeter of the square is: $20\sqrt2$ ft

Keywords: Perimeter, Pythagoras Theorem

Learn more about Square at:

#learnwithBrainly

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4 years ago

Enrique leaves his house and starts to run at an average speed of 6 miles per hour. Half an hour later, Enrique’s younger (and f

Sloan [31]

Answer:

t= 0.8 hr or 48 min.

Step-by-step explanation:

Speed of Enrique= 6 mph

Half and hour late it means that after 1/2 hr.

Speed of Enrique brother = 8 mph

Lets take Enrique cover x distance in time t hr .

x = 6 t ------------ 1

Then his brother will cover x/2 distance in time (t-1/2) hr.

x/2 = 8 (t-1/2) -----------------2

Now from equation 1 and 2

6 t = 16 (t-1/2)

6 t = 16 t - 8

So t= 0.8 hr or 48 min.

It means that his brother will take 0.8 hr to cover half of distance cover by Enrique .

6 0

3 years ago

Answer to the question

viktelen [127]

Answer:

x = 48.

Step-by-step explanation:

If AE is 921, then EC is equivalent to that. First, you subtract 9 from 921, then divide by nineteen to get your answer: x = 48.

5 0

3 years ago