Ask question

Ask question

All categories

2 years ago

14

What is the approximate value of x in the diagram below? (Hint: You will need to use one of the trigonometric ratios given in th

e table.) sin 40° cos 40° 50° 0.643 0.766 0.839 tan 40° 90°

1 answer:

laila [671]2 years ago

6 0

Answer:

x is approximately 20.89

Step-by-step explanation:

cos(40°) = 16/x

x cos(40°) = 16

x = 16 / cos(40°) = 16/.766 = 20.89

You might be interested in

Marie can find the volume of a cube by using the formula V = 53, where s represents the side length of the cube. If Marie's

dimulka [17.4K]

Answer:

The volume of her cube is 15.625cm^3

Step-by-step explanation:

The formula V = s³, where s represents the side length of the cube.

6 0

3 years ago

Determine for each number whether it is a rational or irrational number.

zalisa [80]

1. Rational
2. Irrational
3. Rational
4. Rational

3 0

3 years ago

What number should be added to the expression x^2 + 14x to change it into a perfect square trinomial? Can you help me with this?

Troyanec [42]

X^2+14x

To make it as perfect square binomial first divide the numerical coefficient of 14 by 2 which is 7. Then square the result[7] which is 49 and add it to the equation
x^2+14x+49
After that think of a number that has a square root of 49 then when u multiply the second term in the perfect square by the first and 2 it results to 14. So the answer is
[x+7]^2

6 0

4 years ago

suppose 60% of kids who visit a doctor have a fever, and 20% of kids with a fever have sore throats. what's the probability that

kkurt [141]

Answer:

0.12

Step-by-step explanation:

Suppose there are 100 kids

60% have fever, so <em><u>what is 60% of 100?</u></em>

We convert percentage to decimal and multiply:

60/100 = 0.6

0.6 * 100 = 60 have fever

20% of the people having fever (60 of them) have sore throats, so,

<u><em>What is 20% of 60?</em></u>

We convert percentage to decimal and multiply:

20/100 = 0.2

0.2 * 60 = 12 have sore throat

So, how many people are there with fever AND sore throat, that is 12. We took initially there to be 100 people. Hence, the probability is:

$\frac{12}{100}=0.12$

3 0

3 years ago

7over10 subtract 5over12 in simplest form

Andrews [41]

Answer: $=\frac{17}{60}\quad \left(\mathrm{Decimal:\quad }\:0.28333\dots \right)$

Step-by-step explanation:

$\left(\frac{7}{10}\right)-\left(\frac{5}{12}\right)$

$=\frac{7}{10}-\frac{5}{12}$

$=\frac{42}{60}-\frac{25}{60}$

$=\frac{42-25}{60}$

$=\frac{17}{60}$

4 0

3 years ago