All categories

3 years ago

Two lengths of a triangle are shown.

Mathematics

2 answers:

ruslelena [56]3 years ago

8 0

Answer:

b) 9

Step-by-step explanation:i got it right in my edg test hope it helps

valina [46]3 years ago

5 0

Answer:

9 in.?

Step-by-step explanation:

pythagoras theorem

if jl is the hypotenuse you do the square root of 10² - 5²

You might be interested in

Eric throws a biased coin 10 times. He gets 3 tails. Sue throw the same coin 50 times. She gets 20 tails. Aadi is going to throw

iren2701 [21]

Answer:

(1) The correct option is (A).

(2) The probability that Aadi will get Tails is $\frac{2}{5}$ .

Step-by-step explanation:

It is provided that:

Eric throws a biased coin 10 times. He gets 3 tails.
Sue throw the same coin 50 times. She gets 20 tails.

The probability of tail in both cases is:

$P(\text{Tail})=\frac{3}{10}$
$P(\text{Tail})=\frac{20}{50}=\frac{2}{5}$

(1)

According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

In this case we need to compute the proportion of tails.

Then according to the Central limit theorem, Sue's estimate is best because she throws it <em>n = </em>50 > 30 times.

Thus, the correct option is (A).

(2)

As explained in the first part that Sue's estimate is best for getting a tail, the probability that Aadi will get Tails when he tosses the coin once is:

$P(\text{Tail})=\frac{20}{50}=\frac{2}{5}$

Thus, the probability that Aadi will get Tails is $\frac{2}{5}$ .

7 0

4 years ago

Read 2 more answers

Ow is the product of 3 and –2 shown using integer tiles?

PIT_PIT [208]

The correct answer is option C which is 3 sets of 2 negative tiles.

<h3>What is multiplication?</h3>

Multiplication is the process of determining the product of two or more numbers in mathematics.

We have the product of 3 and -2. We can represent this as 3 is equivalent to -2 negative tiles.

When we add -2 three times -2 - 2 -2 = -6 we will get -6 that is 3 sets of 2 negative tiles.

So when we multiply it by 3, we end with 3 sets of 2 negative tiles. This is because the order of the factors does not change the product.

Therefore the correct answer is option C which is 3 sets of 2 negative tiles.

To know more about multiplication follow

brainly.com/question/10873737

#SPJ1

5 0

2 years ago

… Please help I don’t understand

kondor19780726 [428]

9514 1404 393

Answer:

18. x = {0, π/3, π, 5π/3, 2π}

19. x = {0, 2π}

Step-by-step explanation:

You're supposed to use what you know about equation solving and trig functions to find the values of x that make these equations true. When the equation has a degree other than 1, you may need to use what you know about factoring and/or solving quadratic equations.

Inverse trig functions are helpful, but they don't always tell the whole story. You need to understand the behavior of each function over its whole period.

18. This equation is easily factored.

-2sin(x)(1 -2cos(x)) = 0

The zero product rule tells you the product of these factors is zero only when one or more of the factors is zero. In other words, this resolves into the equations ...

sin(x) = 0
1 -2cos(x) = 0

Your knowledge of the sine function tells you the solutions to the first of these equations is x = 0, π, 2π. (in the range 0 ≤ x ≤ 2π)

The second equation can be rewritten as ...

1 = 2cos(x)

1/2 = cos(x)

Your knowledge of the cosine function tells you this is true for ...

x = π/3, 5π/3

So, all of the solutions to the given equation are ...

x = {0, π/3, π, 5π/3, 2π}

19. Here, it is convenient to use a trig identity to make all of the variable terms be functions of the cosine.

sin(x)² = 1 - cos(x)² . . . . the trig identity we need

2 -(1 -cos(x)²) = 2cos(x) . . . . substitute for sin(x)²

1 + cos(x)² = 2cos(x) . . . . . . . simplify

cos(x)² -2cos(x) +1 = 0 . . . . . subtract 2cos(x), write as a quadratic in cos(x)

(cos(x) -1)² = 0 . . . . . . . . . . . factor (recognize the perfect square trinomial)

cos(x) = 1 . . . . . . . . . . . . . . take the square root, add 1

x = 0, 2π . . . . . . . . values of x for which this is true

_____

The attachments show the solutions found using a graphing calculator. When solving these by graphing, it is generally most convenient to rewrite the equation to the form f(x) = 0. This can be done by subtracting the right-side expression, for example, as we did in the second attachment. That way, the solutions are the x-intercepts, which most graphing calculators can find easily.